CN104530768A - Coarse whiting filler for gas-permeable membrane and preparation method of coarse whiting filler - Google Patents
Coarse whiting filler for gas-permeable membrane and preparation method of coarse whiting filler Download PDFInfo
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Abstract
The invention belongs to the field of deep processing and utilization of nonmetal minerals, composite materials and functional materials, and particularly relates to coarse whiting filler for a gas-permeable membrane and a preparation method of the coarse whiting filler. The invention aims to provide the preparation method of the coarse whiting filler for the gas-permeable membrane. The preparation method comprises the following steps: crushing marble until the diameter is 40 to 70 micrometers; uniformly mixing marble powder, water and a high-molecular surfactant at a weight ratio of 1:(0.2-1.5):(0.001-0.1); ball-milling and filtering; dehydrating until the water content is not larger than 1%; dismissing gathered powder; drying until the water content is not larger than 0.2%; adding an activating agent of which the weight is 0.5% to 3% of the total weight of the dried powder material; fully reacting at the temperature of 110 to 140 DEG C; and cooling, uniformly mixing and packaging. The coarse whiting filler prepared by the method disclosed by the invention is good in performance and can be well applied to preparation of the gas-permeable membranes and relevant products.
Description
Technical field
The invention belongs to non-metallic minerals deep processing and utilization, matrix material and field of functional materials, be specifically related to a kind of air-permeable envelope heavy calcium carbonate filling and preparation method thereof.
Background technology
Along with the raising of social progress and people's living standard, in daily life, medical treatment, special industrial protection field, usage quantity and the use range of disposable product progressively expand, and have reached 30,000,000,000 yuan in the sales volume of China's disposable product in 2013.People propose more and more higher requirement to the comfort of disposable product, and the ventilation property of disposable product directly determines goods comfort.Most disposable product all needs to use plastic film material in a large number, and traditional plastics film is air-locked, and the ventilation property how improving conventional plastic film is easily problem demanding prompt solution.Laminated film is made by adding rigid function filler in conventional plastic thin film preparation process, the laminated film obtaining having micropore through longitudinal direction or two-way stretch is again the method for current modal raising plastics film ventilation property, and this composite plastic film with micro-porous permeable is called for short air-permeable envelope.
This type of air-permeable envelope theoretical foundation is laminated film polymkeric substance and rigid function filler interface peel under suitable External Force Acting, and polymkeric substance extension forms the micropore run through.The pore texture mutually run through allows small molecules gaseous substance through (as water vapour, air etc.), but fluent meterial cannot pass this type of micropore due to surface tension effects, forms the barriers function film with permeable watertight thus.In order to meet service requirements and hygienic requirements, thin film strength and surface property can not have too large change, particularly can not introduce poisonous and hazardous chemical substance when preparing laminated film.Based on this, just propose quite high specification of quality to the filler used in laminated film preparation, filler common on the market, as water-ground limestone, talcum powder, barite etc. all can not meet the specification of quality of air-permeable envelope.
Manufacture air-permeable envelope with traditional heavy calcium carbonate filling and there is following problem:
1, because size distribution extensively makes the composite membrane intensity of preparation low, do not reach service requirements, particle has obvious corner angle, the composite membrane Diazolidinyl Urea of preparation;
2, the composite membrane of preparation can form a large amount of pinprick defect in stretching pore forming process, and pinprick causes liquid also can through film;
The air penetrability of the air-permeable envelope 3, made is unstable, forms air-locked region, local;
4, filler moves to film surface under stress, makes the tear-away powder of air-permeable envelope surface attachment one deck;
5, the grinding aid that filler uses does not consider toxic, can not reach the hygienic requirements of air-permeable envelope;
6, filler disperses uneven in composite membrane, causes the coloured dyeing spot of air-permeable envelope etc. to affect quality.
Problem during contriver produces for air-permeable envelope for the deficiency of current heavy calcium carbonate powder filler, particularly traditional coarse whiting and defect, provide a kind of brand-new water-ground limestone functional stuffing manufacture scheme.
Summary of the invention
First technical problem to be solved by this invention is to provide a kind of preparation method of air-permeable envelope heavy calcium carbonate filling.The method comprises the following steps:
A, be the marble flour of diameter 40 ~ 70 μm by the marble of calcium carbonate content >=99%;
B, manage Shi Fen ︰ Shui ︰ polymeric surface active agent=1 ︰ 0.2 ~ 1.5 ︰ 0.001 ~ 0.1 according to weight ratio great three is mixed, add again diameter be 1 ~ 20mm account in the alumina ball of three's gross weight 30 ~ 55%, corundum ball or zirconia ball any one, grinding, 60 ~ 200 orders filter and obtain calcium carbonate slurry;
C, by calcium carbonate slurry dehydration be not more than 1% to water content, obtain reunion powder;
D, dismiss reunion powder, and be dried to water content and be not more than 0.2%, add account for dry after the activator of powder gross weight 0.5 ~ 3%, 110 ~ 140 DEG C of fully reactions, cooling, mixing, packs.
Concrete, in above-mentioned preparation method step b, described polymeric surface active agent is at least one in sodium alginate, Xylo-Mucine, sodium polyphosphate, polyacrylamide, poly carboxylic acid sodium, sodium polyacrylate, sodium lignosulfonate, polyoxyethylene glycol, polypropylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, TH-904 dispersion agent or calcium lignin sulphonate.
Preferably, in above-mentioned preparation method step b, described polymeric surface active agent be by weight sodium polyphosphate and sodium polyacrylate 1 ︰ 1 mix that gained, sodium lignosulfonate and poly carboxylic acid sodium 1 ︰ 2 mix that gained, TH-904 dispersion agent and calcium lignin sulphonate 1 ︰ 2 mix that gained or poly carboxylic acid sodium and sodium polyacrylate 2 ︰ 1 mix in gained any one.
Preferably, in above-mentioned preparation method step b, described grinding adopts the mode stirred, and churning time is 1 ~ 5h, and stirring velocity is 500 ~ 6000r/min.
Concrete, in above-mentioned preparation method's steps d, described activator is stearic acid, humic acid, oleic acid, silicol, calcium stearate, Zinic stearas, sodium oleate, sodium palmitate, Palmiticacid calcium, sodium laurylsulfonate, ethylene bis stearic acid amide, stearic acid monoglycerides, quadrol, aqueous epoxy resins, epoxy soybean oil, Toluene-2,4-diisocyanate, at least one in 4-vulcabond, 6-methylene radical polyisocyanates, aluminate coupling agent, titanate coupling agent or silane coupling agent.
Preferably, in above-mentioned preparation method's steps d, described activator be by weight stearic acid and Zinic stearas 1 ︰ 1 mix gained, calcium stearate and ethylene bis stearic acid amide 1 ︰ 1 mix gained, oleic acid and stearic acid 1 ︰ 1 mix gained, quadrol and 6-methylene radical polyisocyanates 1 ︰ 1 mix gained or aluminate coupling agent and stearic acid by 1 ︰ 2 mix in gained any one.
Concrete, in above-mentioned preparation method step c, described dehydration to water content is not more than 1% employing following steps and realizes: 60 ~ 200 orders are filtered the calcium carbonate slurry that obtains and dewater and be concentrated into water content and be not more than 25%, then pass into flow velocity for 5 ~ 60m with the speed of 400 ~ 1800kg/h
3/ s temperature is that in the air-flow of 300 ~ 450 DEG C, atomization flash-evaporation is not more than 1% to water content.
Concrete, in above-mentioned preparation method step a, also comprise the additive accounting for marble weight 0.2 ~ 0.8%, described additive is at least one in glycerol or ethylene glycol.
Second technical problem to be solved by this invention is to provide the air-permeable envelope heavy calcium carbonate filling prepared by the preparation method of above-mentioned air-permeable envelope heavy calcium carbonate filling.
Concrete, above-mentioned air-permeable envelope heavy calcium carbonate filling, particle diameter: D
50=0.5 ~ 5 μm, D
97≤ 10 μm, diameter is less than 2 μm of particulate accumulation content>=45%; Whiteness>=82; Oil-absorption(number) 15 ~ 60g/100g; Sphericity 1.2 ~ 1.9; Specific surface area>=35m
2/ g; Size distribution≤1.7.
3rd technical problem to be solved by this invention is to provide the air-permeating film dedicated parent material or air-permeating film PP Pipe Compound that above-mentioned air-permeable envelope heavy calcium carbonate filling prepares.
Product of the present invention has following beneficial effect:
1, the sphericity of calcium carbonate powder of the present invention is fine, does not have corner angle, the composite membrane not Diazolidinyl Urea of preparation;
2, diameter of particle narrowly distributing of the present invention, when preparing air-permeable envelope, can not form uneven, the needle pore defect of dispersion;
3, the present invention is raw materials used harmless, and the air-permeable envelope prepared can Long Term Contact human body;
4, powder of the present invention is used in air-permeable envelope, in use can not migration precipitation, can not come off.
Embodiment
A preparation method for air-permeable envelope heavy calcium carbonate filling, comprises the following steps:
A, be 3 ~ 10mm through multiple stage crushing to diameter by the marble of selected calcium carbonate content >=99%, meticulous other impurity of easy introducing, the excessive mill efficiency that easily causes is low; Again its dry state is ground to diameter at 40 ~ 75 μm, obtains marble flour;
B, in order to improve mill efficiency and drying efficiency, add polymeric surface active agent, by weight, great manages Shi Fen ︰ Shui ︰ polymeric surface active agent=1 ︰ 0.2 ~ 1.5 ︰ 0.001 ~ 0.1 and three is mixed; In order to air-permeable envelope calcium carbonate for special use powder be ground to form required index and save milling time, add again diameter be 1 ~ 20mm account in the alumina ball of three's gross weight 30 ~ 55%, corundum ball or zirconia ball any one, stir 1 ~ 5h, stirring velocity is 500 ~ 6000r/min, and 60 ~ 200 order filtering nets carry out filtration and obtain calcium carbonate slurry; Described polymeric surface active agent is at least one in sodium alginate, Xylo-Mucine, sodium polyphosphate, polyacrylamide, poly carboxylic acid sodium, sodium polyacrylate, sodium lignosulfonate, polyoxyethylene glycol, polypropylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, TH-904 dispersion agent or calcium lignin sulphonate;
C, by concentrated for calcium carbonate slurry dehydration, make the water content of calcium carbonate slurry be not more than 25%, pass into flow velocity for 5 ~ 60m with the speed of 400 ~ 1800kg/h
3/ s temperature is that in the air-flow of 300 ~ 450 DEG C, atomization flash-evaporation is not more than 1% to water content;
D, dismission reunion powder, and be not more than 0.2% by infrared drying to water content, add the activator accounting for dry rear powder gross weight 0.5 ~ 3% and fully react in 110 ~ 140 DEG C, cool, mixing, packs; Described activator is stearic acid, humic acid, oleic acid, silicol, calcium stearate, Zinic stearas, sodium oleate, sodium palmitate, Palmiticacid calcium, sodium laurylsulfonate, ethylene bis stearic acid amide, stearic acid monoglycerides, quadrol, aqueous epoxy resins, epoxy soybean oil, Toluene-2,4-diisocyanate, at least one in 4-vulcabond, 6-methylene radical polyisocyanates, aluminate coupling agent, titanate coupling agent or silane coupling agent.
Preferably, in above-mentioned preparation method step b, described polymeric surface active agent be by weight sodium polyphosphate and sodium polyacrylate 1 ︰ 1 mix that gained, sodium lignosulfonate and poly carboxylic acid sodium 1 ︰ 2 mix that gained, TH-904 dispersion agent and calcium lignin sulphonate 1 ︰ 2 mix that gained or poly carboxylic acid sodium and sodium polyacrylate 2 ︰ 1 mix in gained any one.
Preferably, in above-mentioned preparation method's steps d, described activator be by weight stearic acid and Zinic stearas 1 ︰ 1 mix gained, calcium stearate and ethylene bis stearic acid amide 1 ︰ 1 mix gained, oleic acid and stearic acid 1 ︰ 1 mix gained, quadrol and 6-methylene radical polyisocyanates 1 ︰ 1 mix gained or aluminate coupling agent and stearic acid by 1 ︰ 2 mix in gained any one.
Preferably, in above-mentioned preparation method step a, also comprise the additive accounting for marble weight 0.2 ~ 0.8%, described additive is at least one in glycerol or ethylene glycol.
The air-permeable envelope heavy calcium carbonate filling prepared by the preparation method of above-mentioned air-permeable envelope heavy calcium carbonate filling.
Concrete, above-mentioned air-permeable envelope heavy calcium carbonate filling, particle diameter: D
50=0.5 ~ 5 μm, D
97≤ 10 μm, diameter is less than 2 μm of particulate accumulation content>=45%; Whiteness>=82; Oil-absorption(number) 15 ~ 60g/100g; Sphericity 1.2 ~ 1.9; Specific surface area>=35m
2/ g; Size distribution≤1.7.
The air-permeating film dedicated parent material that above-mentioned air-permeable envelope heavy calcium carbonate filling prepares or air-permeating film PP Pipe Compound.
D in product index of the present invention
50represent and press quantity statistics median size; D
97represent the particle size range of the powder of 97%; Oil-absorption(number) represents allows the minimum quality of the agglomerating required butyl phthalate of 100g powder; Sphericity represents the maximum diameter of single irregular particle different directions and the ratio of minimum diameter; The surface-area of whole powders of specific surface area representation unit weight; Size distribution represents the median size and the ratio by the median size of statistic of attribute of adding up by weight.
Because traditional calcium carbonate is many for air-permeable envelope problem, these reason is caused to be: the particle diameter of traditional calcium carbonate powder is large, sphericity is low, size distribution is too wide, traditional organic-treating of calcium carbonate surface does not reach the requirement of matrix material conjugation, and calcium carbonate powder secondary agglomeration is serious.
The present inventor is after great many of experiments finds to adopt polymeric surface active agent and zirconium white microballon, and namely convention stir reaches grinding effect; Employing two-step approach dehydrates, and product moisture is lower than 0.2%; After depolymerization, powder surface and activator react, and at utmost can overcome above-mentioned Problems existing to the filler prepared after powder surface organic-treating, thus reach good effect.
In order to improve follow-up drying efficiency, the lower effect of amount of water is better; But, amount of water is lower can have a strong impact on mill efficiency again, so in order to take into account drying and mill efficiency, contriver finds to add polymeric surface active agent in the feed, both drying and mill efficiency can be met, polymeric surface active agent can be attached to powder surface again, reunion degree when reducing dry, thus reaches good effect.
The generation of the reunion powder described in the inventive method is because raw material particle size is trickle, and drying process can be impelled between particle and attracts each other, and forms cluster of grains, is referred to as reunion powder; Again because reunion powder cannot embody the effect and function of powder itself, so need to dismiss, be referred to as and dismiss reunion powder.
The present invention adopt activator be with can with the organism of the functional group of powder surface generation chemical reaction, the group of these functional groups and powder surface produces chemical reaction, form chemical bond, organism is fixed on powder surface, thus the consistency improved between powder and polymkeric substance, when preparing air-permeable envelope, being conducive to dispersion and improving ventilative film strength.
Embodiment 1
1. the marble ore of selected calcium carbonate content>=99%, drops into (engine speed 1100r/min, rotation speed of fan 4000r/min) in ring barreling and obtain D in dust-precipitator after being broken for the fritter of diameter 3mm
50it is the marble flour of 50 μm;
2. get pure water 4 tons, add poly carboxylic acid sodium (commercially available ROHM AND HAAS 9400) 100kg and mix in premixing tank, add the marble flour also constantly stirring that 1. 6 tons of steps obtain gradually, make premix slurry;
3. in vertical mixing tank, be placed with diameter 1.2mm zirconia ball 800kg, diameter 2.2mm zirconia ball 1200kg, diameter 3.8mm zirconia ball 2000kg, progressively pump into premix slurry that 2. step make and simultaneously by slow to fast turn on agitator, under 1800r/min stirring velocity, stir 1.5h;
4. the mixture after stirring is filtered by 100 orders, the calcium carbonate slurry about 9.3 tons that water content is 35% is obtained after leaching agitated medium (reusable after cleaning) and coarseparticulate, take centrifuge dehydration to be concentrated into water content to this calcium carbonate slurry to be 23%, to spray into flow velocity 15m with the speed of 45° angle 650kg/h
3carry out atomization and moment evaporate to dryness in 350 DEG C of air-flows of/s, obtain the reunion powder of about 5.9 tons of water content 0.8%;
5. reunion powder by infrared radiation device steady temperature is being depolymerization 1min in the high speed depolymerizer of 135 DEG C, obtain the powder that water content is 0.16%, the silane coupling agent (commercially available KH550) simultaneously adding 50kg fully reacts, and obtains air-permeable envelope calcium carbonate for special use powder 5.8 tons;
6. air-permeable envelope calcium carbonate for special use powder is collected in homogenizing 3min in all mixing tank by air-flow, and temperature is down to room temperature and is carried out quantitative package.
The present embodiment gained air-permeable envelope calcium carbonate for special use powder characteristic is as follows: particle diameter: D
50=2.2 μm,
d97=5.8 μm, diameter is less than 2 μm of particulate accumulation content 78%; Whiteness 91; Oil-absorption(number) 32g/100g; Sphericity 1.4; Specific surface area 55m
2/ g; Size distribution 1.5.
Embodiment 2
1. the marble ore of selected calcium carbonate content>=99%, drops into (engine speed 600r/min, rotation speed of fan 2000r/min) in ball mill and obtain D in dust-precipitator after being broken for the fritter of diameter 8mm
50it is the marble flour of 40 μm;
2. get pure water 2.5 tons, add sodium polyacrylate (commercially available molecular weight is greater than 10,000) 120kg and mix in premixing tank, add the powder also constantly stirring that 1. 5.5 tons of steps obtain gradually, make premix slurry;
3. in vertical mixing tank, be placed with the zirconia ball 1200kg of diameter 2mm, the zirconia ball 800kg of diameter 4mm, the zirconia ball 700kg of diameter 6mm, progressively pump into premix slurry that 2. step make and simultaneously by slow to fast turn on agitator, under 1200r/min stirring velocity, stir 2h;
4. the mixture after agitation grinding is filtered by space 80 order, the calcium carbonate slurry 7.9 tons that water content is 30% is obtained after the agitated medium (reusable after cleaning) leached and coarseparticulate, take centrifuge dehydration to be concentrated into water content to this calcium carbonate slurry to be 23%, to spray into flow velocity 12m with the speed of hexagonal angle 1100kg/h
3carry out atomization and moment evaporate to dryness in 350 DEG C of air-flows of/s, obtain the reunion powder of about 5.4 tons of water content 0.9%;
5. reunion dry powder by infrared radiation device steady temperature is being depolymerization 1min in the high speed depolymerizer of 135 DEG C, obtain the powder that water content is 0.18%, add 23kg Zinic stearas and 23kg stearic acid fully reacts simultaneously, obtain air-permeable envelope calcium carbonate for special use powder 5.3 tons;
6. air-permeable envelope calcium carbonate for special use powder is collected in homogenizing 3min in all mixing tank by air-flow, and temperature is down to room temperature and is carried out quantitative package.
The present embodiment gained air-permeable envelope calcium carbonate for special use powder characteristic is as follows: particle diameter: D
502.8 μm, D
975.6 μm, diameter is less than 2 μm of particulate accumulation content 72%; Whiteness 92; Oil-absorption(number) 31.6g/100g; Sphericity 1.4; Specific surface area 54m
2/ g; Size distribution 1.5.
Embodiment 3
1. the marble ore of selected calcium carbonate content>=99%, drops into (engine speed 300r/min, rotation speed of fan 3000r/min) in vertical mill and obtain D in dust-precipitator after being broken for the fritter of diameter 8mm
50it is the marble flour of 40 μm;
2. get pure water 4.5 tons, add sodium lignosulfonate 40kg and poly carboxylic acid sodium 80kg mixes in premixing tank, add powder that 1. 6 tons of steps obtain gradually and constantly stir, making premix slurry;
3. in vertical mixing tank, be placed with the corundum microballoon 1200kg of diameter 1.2mm, the corundum microballoon 800kg of diameter 3.4mm, the corundum microballoon 700kg of diameter 5mm, the corundum microballoon 1000kg of diameter 8mm, progressively pump into premix slurry that 2. step make and simultaneously by slow to fast turn on agitator, under 2500r/min stirring velocity, stir 1.2h;
4. the mixture after agitation grinding is filtered by space 80 order, the calcium carbonate slurry that water content is 38% is obtained after the agitated medium (reusable after cleaning) leached and coarseparticulate, take centrifuge dehydration to be concentrated into water content to this calcium carbonate slurry to be 23%, to spray into flow velocity 18m with 90 ° of angle 850kg/h speed
3carry out atomization and moment evaporate to dryness in 350 DEG C of air-flows of/s, obtain the reunion powder of about 5.9 tons of water content 0.9%;
5. reunion powder by infrared radiation device steady temperature is being depolymerization 1min in the high speed depolymerizer of 135 DEG C, obtain the powder of water content 0.16%, add 17kg aluminate coupling agent and 34kg stearic acid fully reacts simultaneously, obtain air-permeable envelope calcium carbonate for special use powder 5.8 tons;
6. air-permeable envelope calcium carbonate for special use powder is collected in homogenizing 3min in all mixing tank by air-flow, and temperature is down to room temperature and is carried out quantitative package.
The present embodiment gained air-permeable envelope calcium carbonate for special use powder characteristic is as follows: particle diameter: D
502.4 μm, D
975.4 μm, diameter is less than 2 μm of particulate accumulation content 76%; Whiteness 92; Oil-absorption(number) 33.2g/100g; Sphericity 1.4; Specific surface area 55m
2/ g; Size distribution 1.5.
Depolymerization equipment used in above-described embodiment is the depolymerization equipment adding infrared heating device on FW/HTS many rotor-types high speed powder depolymerizer basis; High-temperature atomizing flashing apparatus used is the atomization flash-evaporation equipment of band spraying setting device customized in peak force drying complete apparatus company QGS5 type Equipment Foundations; But during actual preparation, be not limited to the equipment of this model, the type, other heat drying modes and high-speed stirring machinery are equally applicable to the physics of relevant components in functional stuffing of the present invention or/and chemically composited and finishing with the equipment such as intermittent type surface modification machine and other continous way surface modification machines.
The air-permeable envelope that the air-permeable envelope heavy calcium carbonate filling now embodiment 2 prepared is prepared for the preparation of air-permeable envelope and existing calcium carbonate powder carries out Performance comparision, sees the following form 1:
Table 1
As can be seen from Table 1, the air-permeable envelope that filler of the present invention prepares all obviously is better than the air-permeable envelope that existing calcium carbonate powder prepares in air penetrability, needle pore defect, tensile strength, glossiness etc. are several.So the air-permeable envelope heavy calcium carbonate filling prepared of the inventive method can the good air-permeable envelope of processability, provide a kind ofly better to select for preparing air-permeable envelope.
Claims (10)
1. a preparation method for air-permeable envelope heavy calcium carbonate filling, is characterized in that: comprise the following steps:
A, be the marble flour of diameter 40 ~ 70 μm by the marble of calcium carbonate content >=99%;
B, manage Shi Fen ︰ Shui ︰ polymeric surface active agent=1 ︰ 0.2 ~ 1.5 ︰ 0.001 ~ 0.1 according to weight ratio great three is mixed, add again diameter be 1 ~ 20mm account in the alumina ball of three's gross weight 30 ~ 55%, corundum ball or zirconia ball any one, grinding, 60 ~ 200 orders filter and obtain calcium carbonate slurry;
C, by calcium carbonate slurry dehydration be not more than 1% to water content, obtain reunion powder;
D, dismiss reunion powder, and be dried to water content and be not more than 0.2%, add account for dry after the activator of powder gross weight 0.5 ~ 3%, 110 ~ 140 DEG C of fully reactions, cooling, mixing, packs.
2. the preparation method of air-permeable envelope heavy calcium carbonate filling according to claim 1, it is characterized in that: in step b, described polymeric surface active agent is at least one in sodium alginate, Xylo-Mucine, sodium polyphosphate, polyacrylamide, poly carboxylic acid sodium, sodium polyacrylate, sodium lignosulfonate, polyoxyethylene glycol, polypropylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, TH-904 dispersion agent or calcium lignin sulphonate.
3. the preparation method of air-permeable envelope heavy calcium carbonate filling according to claim 2, it is characterized in that: in step b, described polymeric surface active agent be by weight sodium polyphosphate and sodium polyacrylate 1 ︰ 1 mix that gained, sodium lignosulfonate and poly carboxylic acid sodium 1 ︰ 2 mix that gained, TH-904 dispersion agent and calcium lignin sulphonate 1 ︰ 2 mix that gained or poly carboxylic acid sodium and sodium polyacrylate 2 ︰ 1 mix in gained any one.
4. the preparation method of air-permeable envelope heavy calcium carbonate filling according to claim 1, it is characterized in that: in steps d, described activator is stearic acid, humic acid, oleic acid, silicol, calcium stearate, Zinic stearas, sodium oleate, sodium palmitate, Palmiticacid calcium, sodium laurylsulfonate, ethylene bis stearic acid amide, stearic acid monoglycerides, quadrol, aqueous epoxy resins, epoxy soybean oil, Toluene-2,4-diisocyanate, at least one in 4-vulcabond, 6-methylene radical polyisocyanates, aluminate coupling agent, titanate coupling agent or silane coupling agent.
5. the preparation method of air-permeable envelope heavy calcium carbonate filling according to claim 4, is characterized in that: described activator be by weight stearic acid and Zinic stearas 1 ︰ 1 mix gained, calcium stearate and ethylene bis stearic acid amide 1 ︰ 1 mix gained, oleic acid and stearic acid 1 ︰ 1 mix gained, quadrol and 6-methylene radical polyisocyanates 1 ︰ 1 mix gained or aluminate coupling agent and stearic acid by 1 ︰ 2 mix in gained any one.
6. the preparation method of air-permeable envelope heavy calcium carbonate filling according to claim 1, is characterized in that: in step b, and described grinding adopts the mode stirred, and churning time is 1 ~ 5h, and stirring velocity is 500 ~ 6000r/min.
7. the preparation method of air-permeable envelope heavy calcium carbonate filling according to claim 1, it is characterized in that: in step c, described dehydration to water content is not more than 1% employing following steps and realizes: 60 ~ 200 orders are filtered the calcium carbonate slurry that obtains and dewater and be concentrated into water content and be not more than 25%, then pass into flow velocity for 5 ~ 60m with the speed of 400 ~ 1800kg/h
3/ s temperature is that in the air-flow of 300 ~ 450 DEG C, atomization flash-evaporation is not more than 1% to water content.
8. the preparation method of the air-permeable envelope heavy calcium carbonate filling according to any one of claim 1 ~ 7, it is characterized in that: in step a, also comprise the additive accounting for marble weight 0.2 ~ 0.8%, described additive is at least one in glycerol or ethylene glycol.
9. the air-permeable envelope heavy calcium carbonate filling prepared by the preparation method of the air-permeable envelope heavy calcium carbonate filling described in any one of claim 1 ~ 8.
10. the air-permeating film dedicated parent material prepared by air-permeable envelope heavy calcium carbonate filling according to claim 9 or air-permeating film PP Pipe Compound.
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| CN107353485A (en) * | 2016-05-10 | 2017-11-17 | 合肥杰事杰新材料股份有限公司 | A kind of antibacterial, ventilating film master batch and preparation method thereof |
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| CN106674600A (en) * | 2016-08-16 | 2017-05-17 | 四川云科微纳科技有限公司 | Preparation method of chitosan-coated heavy calcium carbonate anti-microbial filler for breathable film |
| CN107312361A (en) * | 2017-07-01 | 2017-11-03 | 江西九峰纳米钙有限公司 | A kind of preparation technology for improving nano-calcium carbonate activation rate |
| CN108102428A (en) * | 2017-12-08 | 2018-06-01 | 安徽新涛新材料科技股份有限公司 | The method that ball milling modification prepares ultra-fine powdered whiting |
| CN108047766A (en) * | 2017-12-19 | 2018-05-18 | 安徽省宣城市华纳新材料科技有限公司 | A kind of method that nano-calcium carbonate surface is modified |
| CN108546342A (en) * | 2018-04-04 | 2018-09-18 | 中国科学院宁波材料技术与工程研究所 | A kind of calcium carbonate dispersion treating agent, preparation method and a kind of composite material |
| CN108570247A (en) * | 2018-04-11 | 2018-09-25 | 湖南师范大学 | A kind of Aluminate modified heavy calcium carbonate and preparation method thereof and a kind of poly styrene composite material |
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| CN109825111A (en) * | 2019-03-29 | 2019-05-31 | 桂林理工大学 | A calcium carbonate filler that can be used to produce silane-modified polyether sealant without vacuum dehydration |
| CN110256872A (en) * | 2019-07-19 | 2019-09-20 | 良德纳米粉体创新科技(安徽)有限公司 | Super fine calcium carbonate and its processing method |
| CN110373047A (en) * | 2019-07-19 | 2019-10-25 | 良德纳米粉体创新科技(安徽)有限公司 | For the modification super fine calcium carbonate of high density polyethylene (HDPE) solid wall pipe and its application |
| CN110229542A (en) * | 2019-07-22 | 2019-09-13 | 恩平燕怡新材料有限公司 | A kind of PVC pipe nm-class active calcium carbonate and preparation method thereof, PVC pipe |
| CN110577756A (en) * | 2019-09-27 | 2019-12-17 | 广西贺州市科隆粉体有限公司 | Composite modifier for modifying surface of calcium carbonate |
| CN111073346A (en) * | 2019-11-14 | 2020-04-28 | 江西广源化工有限责任公司 | Preparation method of wet ball-milling modified calcium carbonate powder special for water-based polyurethane wood lacquer primer |
| CN111019396A (en) * | 2019-12-06 | 2020-04-17 | 佛山众塑联供应链服务有限公司 | Preparation method of modified heavy calcium carbonate for PVC foamed sheet hard plastic product and modified heavy calcium carbonate |
| CN112080067A (en) * | 2020-08-26 | 2020-12-15 | 广东工业大学 | High-filling filler modified polyolefin composite material and preparation method and application thereof |
| CN112679991A (en) * | 2020-12-29 | 2021-04-20 | 广西贺州市科隆粉体有限公司 | Preparation method of calcium carbonate powder |
| CN112812367A (en) * | 2021-02-05 | 2021-05-18 | 李领欢 | Preparation process of pore-assisting agent for breathable film |
| CN114434922A (en) * | 2022-03-01 | 2022-05-06 | 浙江盛纺纳米材料科技有限公司 | Laminating non-woven fabric and preparation method thereof |
| CN116023802A (en) * | 2022-12-27 | 2023-04-28 | 池州市贵兴非矿新材料有限公司 | A modified heavy calcium carbonate with low oil absorption value |
| CN115873423A (en) * | 2022-12-29 | 2023-03-31 | 贺州学院 | Method for preparing modified calcium carbonate powder by using tetrabutyl titanate |
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