CN111019397A - Modifier of modified calcium carbonate and application thereof - Google Patents
Modifier of modified calcium carbonate and application thereof Download PDFInfo
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- CN111019397A CN111019397A CN201911329608.8A CN201911329608A CN111019397A CN 111019397 A CN111019397 A CN 111019397A CN 201911329608 A CN201911329608 A CN 201911329608A CN 111019397 A CN111019397 A CN 111019397A
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- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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Abstract
The invention discloses a modifier for modified calcium carbonate, which consists of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate according to a certain weight ratio, wherein α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate are absent in the modifier, and have great influence on calcium carbonate modification, and α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate play a synergistic role in calcium carbonate modification, so that the impact strength of plastics is synergistically improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of calcium carbonate modification, and particularly relates to a modifier for modified calcium carbonate and application thereof.
[ background of the invention ]
Calcium carbonate is a common inorganic filler, and is widely used in the fields of plastics and the like due to wide sources, low price and the like. However, unmodified calcium carbonate has the problems of surface hydrophilicity and lipophobicity, high specific surface energy, easy agglomeration among particles and the like, and has poor compatibility with plastics. Therefore, when the calcium carbonate is filled into plastics, the surface of the calcium carbonate must be modified to ensure that the surface of the calcium carbonate is oleophilic and hydrophobic, the compatibility with the plastics is enhanced, the dispersibility in the plastics is improved, and the mechanical property of the plastics is improved, so that the high-performance plastics are prepared.
[ summary of the invention ]
The invention provides a modifier of modified calcium carbonate and application thereof, which are used for solving the problem of surface modification of calcium carbonate.
In order to solve the technical problems, the invention adopts the following technical scheme:
a modifier of modified calcium carbonate is composed of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide boric acid ester and polysiloxane urethane acrylate according to a certain weight ratio.
Further, the weight ratio of the α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate to polysiloxane urethane acrylate is 8-13:5-9:1-2: 2-3.
Further, the weight ratio of the α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate to polysiloxane urethane acrylate is 12:7:1.4: 2.9.
The invention also provides an application of the modifier of the modified calcium carbonate, which comprises the following specific steps: adding a modifier into the calcium carbonate powder, and then stirring to prepare a mixture; the obtained mixture is dried, ground and sieved to prepare the modified calcium carbonate.
Furthermore, the addition amount of the modifier is 2.3-3% of the weight of the calcium carbonate powder.
Further, the mixture was stirred at a speed of 2000-3000r/min for 60-90min to obtain a mixture.
Further, drying the obtained mixture at a temperature of 46-50 ℃ until the water content is less than or equal to 0.6%.
Furthermore, the mesh number of the modified calcium carbonate is 1000-1200 meshes.
The invention has the following beneficial effects:
(1) in addition, the polysiloxane urethane acrylate contains silicon oxygen bonds, amino groups and carbonyl groups, and the oleic acid diethanolamide borate contains oleic acid groups, hydroxyl groups, amides and carbonyl groups, so that each group and a plastic system form a mutually staggered mesh system, the compatibility of the modified calcium carbonate and the plastic is further enhanced, the bonding force of the plastic system interface is greatly increased, and the impact strength of the plastic is further improved.
(2) α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate are absent in the modifier, which greatly affect the modification of calcium carbonate, and α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate play a synergistic role in the modification of calcium carbonate, so that the impact strength of plastics is synergistically improved.
[ detailed description ] embodiments
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
In an embodiment, the preparation method of the modified calcium carbonate for high-performance plastics comprises the following steps:
s1: cleaning limestone transported from a material field, removing impurities, airing stone to remove surface moisture, and crushing the stone by using a crusher to prepare a calcium carbonate crushed material;
s2: conveying the calcium carbonate crushed material prepared in the step S1 into a vertical mill, and synchronously adding a grinding aid consisting of sodium lignosulfonate and triisopropanolamine, and grinding, wherein the addition amount of the grinding aid is 2.6-3.2% of the crushed weight of the calcium carbonate, and the weight ratio of the sodium lignosulfonate to the triisopropanolamine is 1:3.5-6, so as to prepare calcium carbonate fine powder;
s3: classifying the calcium carbonate fine powder prepared in the step S2 by using a classifier to prepare 100-200-mesh calcium carbonate powder;
s4, adding a modifier into the calcium carbonate powder prepared in the step S3, wherein the modifier consists of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol-polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate, the addition amount of the modifier is 2.3-3% of the weight of the calcium carbonate powder, the weight ratio of the α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol-polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate is 8-13:5-9:1-2:2-3, and stirring is carried out at the speed of 3000r/min of 2000-3000r/min for 60-90min to prepare a mixture;
s5: drying the mixture prepared in the step S4 at the temperature of 46-50 ℃ until the water content is less than or equal to 0.6%, grinding and sieving to prepare 1000-sand 1200-mesh modified calcium carbonate.
The application of the modified calcium carbonate in high-performance plastics comprises the following raw materials in percentage by mass: 48.3-53.9% of polyvinyl chloride, 38-42% of modified calcium carbonate, 3.2-4.6% of chlorinated paraffin, 0.8-1.1% of heat stabilizer, 1.8-2.1% of plasticizer and 2-2.3% of toughening agent;
the heat stabilizer is a KSR organic rare earth composite stabilizer;
the plasticizer is dioctyl phthalate;
the toughening agent is a styrene-butadiene thermoplastic elastomer.
The preparation method of the high-performance plastic comprises the following steps:
s1, weighing the raw materials according to the formula, adding the raw materials into a high-speed stirrer, heating to 107 ℃ at 100-;
and S2, conveying the uniformly mixed material prepared in the step S1 to a double-screw extruder, and performing melt blending extrusion granulation to prepare the high-performance plastic.
The present invention is illustrated by the following more specific examples.
Example 1
A preparation method of modified calcium carbonate for high-performance plastics comprises the following steps:
s1: cleaning limestone transported from a material field, removing impurities, airing stone to remove surface moisture, and crushing the stone by using a crusher to prepare a calcium carbonate crushed material;
s2: conveying the calcium carbonate crushed material prepared in the step S1 into a vertical mill, and synchronously adding a grinding aid consisting of sodium lignosulfonate and triisopropanolamine, and grinding, wherein the addition amount of the grinding aid is 3% of the crushing weight of the calcium carbonate, and the weight ratio of the sodium lignosulfonate to the triisopropanolamine is 1:5.6, so as to prepare calcium carbonate fine powder;
s3: grading the calcium carbonate fine powder prepared in the step S2 by using a grader to prepare calcium carbonate powder of 200 meshes;
s4, adding a modifier into the calcium carbonate powder prepared in the step S3, wherein the modifier consists of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate, the addition amount of the modifier is 2.8% of the weight of the calcium carbonate powder, the weight ratio of the α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate is 12:7:1.4:2.9, and stirring at the speed of 3000r/min for 62min to prepare a mixture;
s5: and (4) drying the mixture prepared in the step S4 at the temperature of 48 ℃ until the water content is 0.5%, grinding and sieving to prepare the modified calcium carbonate of 1200 meshes.
The application of the modified calcium carbonate in high-performance plastics comprises the following raw materials in percentage by mass: 50.3% of polyvinyl chloride, 40% of modified calcium carbonate, 4.6% of chlorinated paraffin, 1% of heat stabilizer, 2.1% of plasticizer and 2% of toughening agent;
the heat stabilizer is a KSR organic rare earth composite stabilizer;
the plasticizer is dioctyl phthalate;
the toughening agent is a styrene-butadiene thermoplastic elastomer.
The preparation method of the high-performance plastic comprises the following steps:
(1) weighing the raw materials according to the formula, adding the raw materials into a high-speed stirrer, heating to 105 ℃, and uniformly stirring and mixing at the speed of 1500r/min to obtain a uniformly mixed material;
(2) and (2) conveying the uniformly mixed material prepared in the step (1) to a double-screw extruder, and performing melt blending extrusion granulation to obtain the high-performance plastic. The twin-screw extruder is divided into 9 sections, the set temperature is 180 ℃, 200 ℃, 210 ℃, 230 ℃, 235 ℃, 240 ℃, 245 ℃, 250 ℃ and 240 ℃, the rotation speed of the main machine screw is 200r/min, and the head temperature is 240 ℃.
Example 2
A preparation method of modified calcium carbonate for high-performance plastics comprises the following steps:
s1: cleaning limestone transported from a material field, removing impurities, airing stone to remove surface moisture, and crushing the stone by using a crusher to prepare a calcium carbonate crushed material;
s2: conveying the calcium carbonate crushed material prepared in the step S1 into a vertical mill, and synchronously adding a grinding aid consisting of sodium lignosulfonate and triisopropanolamine, and grinding, wherein the addition amount of the grinding aid is 2.7% of the crushed weight of the calcium carbonate, and the weight ratio of the sodium lignosulfonate to the triisopropanolamine is 1:3.8, so as to prepare calcium carbonate fine powder;
s3: grading the calcium carbonate fine powder prepared in the step S2 by using a grader to prepare 100-mesh calcium carbonate powder;
s4, adding a modifier into the calcium carbonate powder prepared in the step S3, wherein the modifier consists of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate, the addition amount of the modifier is 2.3% of the weight of the calcium carbonate powder, the weight ratio of the α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate to polysiloxane urethane acrylate is 8:6:1:3, and stirring for 86min at the speed of 2000r/min to prepare a mixture;
s5: and (4) drying the mixture prepared in the step S4 at the temperature of 46 ℃ until the water content is 0.6%, grinding the mixture to 1000 meshes, and sieving the ground product to obtain the modified calcium carbonate.
The application of the modified calcium carbonate in high-performance plastics comprises the following raw materials in percentage by mass: 53.9% of polyvinyl chloride, 38% of modified calcium carbonate, 3.2% of chlorinated paraffin, 0.8% of heat stabilizer, 1.8% of plasticizer and 2.3% of toughening agent;
the heat stabilizer is a KSR organic rare earth composite stabilizer;
the plasticizer is dioctyl phthalate;
the toughening agent is a styrene-butadiene thermoplastic elastomer.
The preparation method of the high-performance plastic comprises the following steps:
(1) weighing the raw materials according to the formula, adding the raw materials into a high-speed stirrer, heating to 102 ℃, and uniformly stirring and mixing at the speed of 1000r/min to obtain a uniformly mixed material;
(2) and (2) conveying the uniformly mixed material prepared in the step (1) to a double-screw extruder, and performing melt blending extrusion granulation to obtain the high-performance plastic. The twin-screw extruder is divided into 9 sections, the set temperature is 180 ℃, 200 ℃, 210 ℃, 230 ℃, 235 ℃, 240 ℃, 245 ℃, 250 ℃ and 240 ℃, the rotation speed of the main machine screw is 200r/min, and the head temperature is 240 ℃.
Example 3
A preparation method of modified calcium carbonate for high-performance plastics comprises the following steps:
s1: cleaning limestone transported from a material field, removing impurities, airing stone to remove surface moisture, and crushing the stone by using a crusher to prepare a calcium carbonate crushed material;
s2: conveying the calcium carbonate crushed material prepared in the step S1 into a vertical mill, and synchronously adding a grinding aid consisting of sodium lignosulfonate and triisopropanolamine, and grinding, wherein the addition amount of the grinding aid is 3.2% of the crushed weight of the calcium carbonate, and the weight ratio of the sodium lignosulfonate to the triisopropanolamine is 1:5.8, so as to prepare calcium carbonate fine powder;
s3: grading the calcium carbonate fine powder prepared in the step S2 by using a grader to prepare calcium carbonate powder of 200 meshes;
s4, adding a modifier into the calcium carbonate powder prepared in the step S3, wherein the modifier consists of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate, the addition amount of the modifier is 3% of the weight of the calcium carbonate powder, the weight ratio of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate to polysiloxane urethane acrylate is 11:8:2:2.6, and stirring for 78min at the speed of 2500r/min to prepare a mixture;
s5: and (4) drying the mixture prepared in the step S4 at the temperature of 50 ℃ until the water content is 0.5%, grinding the mixture to 1000 meshes, and sieving the ground product to obtain the modified calcium carbonate.
The application of the modified calcium carbonate in high-performance plastics comprises the following raw materials in percentage by mass: 48.3% of polyvinyl chloride, 42% of modified calcium carbonate, 4.5% of chlorinated paraffin, 1.1% of heat stabilizer, 2% of plasticizer and 2.1% of toughening agent;
the heat stabilizer is a KSR organic rare earth composite stabilizer;
the plasticizer is dioctyl phthalate;
the toughening agent is a styrene-butadiene thermoplastic elastomer.
The preparation method of the high-performance plastic comprises the following steps:
(1) weighing the raw materials according to the formula, adding the raw materials into a high-speed stirrer, heating to 106 ℃, and uniformly stirring and mixing at the speed of 1200/min to obtain a uniformly mixed material;
(2) and (2) conveying the uniformly mixed material prepared in the step (1) to a double-screw extruder, and performing melt blending extrusion granulation to obtain the high-performance plastic. The twin-screw extruder is divided into 9 sections, the set temperature is 180 ℃, 200 ℃, 210 ℃, 230 ℃, 235 ℃, 240 ℃, 245 ℃, 250 ℃ and 240 ℃, the rotation speed of the main machine screw is 200r/min, and the head temperature is 240 ℃.
Comparative example 1
The process for preparing modified calcium carbonate for high-performance plastics was substantially the same as that of example 1, except that no modifier was added in step S4.
Comparative example 2
The modified calcium carbonate for high performance plastics was prepared by the same procedure as in example 1 except that the modifier source material in step S4 lacked α -isotridecyl- ω -hydroxy-poly (oxy-1, 2-ethylene).
Comparative example 3
The preparation process of the modified calcium carbonate for high-performance plastics is basically the same as that of example 1, except that the raw material of the modifier in step S4 lacks fatty alcohol-polyoxyethylene ether ammonium sulfate.
Comparative example 4
The modified calcium carbonate for high-performance plastics was prepared by the same procedure as in example 1 except that the modifier material in step S4 lacks oleic acid diethanolamide borate ester.
Comparative example 5
The modified calcium carbonate for high-performance plastics was prepared by the same procedure as in example 1 except that the raw material of the modifier in step S4 lacks the silicone urethane acrylate.
Comparative example 6
The preparation process of the modified calcium carbonate for high-performance plastics is basically the same as that of example 1, except that the raw material proportion of the modifier in step S4 is different, namely, the weight ratio of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate is 5:3:2: 3.
Comparative example 7
The preparation process of the modified calcium carbonate for high-performance plastics is basically the same as that of example 1, except that the raw material proportion of the modifier in step S4 is different, namely, the weight ratio of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate is 17:13:1: 2.
Comparative example 8
The preparation process of the modified calcium carbonate for high-performance plastics is basically the same as that of example 1, except that the raw material proportion of the modifier in step S4 is different, namely, the weight ratio of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide borate and polysiloxane urethane acrylate is 9:12:5: 2.
(I) Performance testing
The impact strengths of the plastics prepared in examples 1 to 3 and the plastics prepared in comparative examples 1 to 8 (plastics prepared by the plastic preparation process of example 1 using the modified calcium carbonates prepared in comparative examples 1 to 8) were measured, and the results are shown in Table 1 below.
The following criteria were used for testing:
GB/T1043-93 impact test method for plastic simply supported beam.
TABLE 1
| Experimental project | Impact Strength (kJ/m)2) |
| Example 1 | 48.91 |
| Example 2 | 44.64 |
| Example 3 | 47.12 |
| Comparative example 1 | 16.84 |
| Comparative example 2 | 43.16 |
| Comparative example 3 | 39.71 |
| Comparative example 4 | 41.58 |
| Comparative example 5 | 42.63 |
| Comparative example 6 | 40.78 |
| Comparative example 7 | 38.96 |
| Comparative example 8 | 42.57 |
It can be seen from table 1 that the absence of α -isotridecyl- ω -hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanolamide borate, silicone urethane acrylate, all greatly affect the modification of calcium carbonate from the data of example 1 and comparative examples 1-5, the absence of α -isotridecyl- ω -hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanolamide borate, silicone urethane acrylate, respectively, results in a decrease in impact strength of 13.32%, 23.17%, 2%, 14.73%, respectively, and the addition of α -isotridecyl- ω -hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanolamide borate, silicone urethane acrylate, respectively, results in a synergistic increase in impact strength from the surfactant-urethane acrylate, silicone urethane acrylate, silicone urethane acrylate, silicone urethane acrylate, silicone urethane acrylate, silicone urethane acrylate, silicone acrylate.
Second, the influence of different modified calcium carbonate addition amounts on the impact properties of plastics is researched
The preparation process of the high-performance plastic is basically the same as that of example 1, except that experiments are carried out according to the addition amount of the modified calcium carbonate shown in Table 2, and the influence of different addition amounts of the modified calcium carbonate on the impact performance of the plastic is researched, and the results are shown in Table 2.
TABLE 2
| Modified calcium carbonate addition amount/%) | Impact Strength (kJ/m)2) |
| 36 | 34.91 |
| 38 | 44.64 |
| 40 | 48.91 |
| 42 | 47.12 |
| 44 | 40.36 |
| 46 | 31.59 |
According to the experimental data in table 2, when the addition amount of the modified calcium carbonate is small, the probability of extrusion deformation between the particle groups existing in the plastic in an agglomerated form is small, so that the modified calcium carbonate cannot play a toughening role in the plastic; when the addition amount of the modified calcium carbonate is gradually increased, the probability of extrusion deformation of each particle group of the modified calcium carbonate is gradually increased, the modified calcium carbonate is gradually dispersed, and the impact energy can be effectively absorbed when the plastic is impacted, so that the impact strength of the plastic is improved; when the addition amount of the modified calcium carbonate is larger, the saturation of the pressure which can be borne by the plastic is exceeded, redundant modified calcium carbonate particles are accumulated into particle clusters with larger sizes, the plastic can be split when the plastic is impacted, and the impact strength of the plastic is further greatly reduced. It is also clear from the data in the table that the maximum impact strength of the plastics is 48.91kJ/m when the amount of modified calcium carbonate added is 40% by mass of the total raw materials for producing the plastics2This addition amount was found to be the optimum addition amount.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A modifier of modified calcium carbonate is characterized by consisting of α -isotridecyl-omega-hydroxyl-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanol amide boric acid ester and polysiloxane urethane acrylate according to a certain weight ratio.
2. The modifier of modified calcium carbonate according to claim 1, wherein the weight ratio of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanolamide borate to polysiloxane urethane acrylate is 8-13:5-9:1-2: 2-3.
3. The modifier of modified calcium carbonate according to claim 2, wherein the weight ratio of α -isotridecyl-omega-hydroxy-poly (oxy-1, 2-ethylene), fatty alcohol polyoxyethylene ether ammonium sulfate, oleic acid diethanolamide borate to polysiloxane urethane acrylate is 12:7:1.4: 2.9.
4. Use of a modified calcium carbonate according to any one of claims 1 to 3, characterized in that: adding a modifier into the calcium carbonate powder, and then stirring to prepare a mixture; drying, grinding and sieving the obtained mixture to obtain the modified calcium carbonate, wherein the obtained modified calcium carbonate is applied to preparing plastics.
5. Use of a modifier of modified calcium carbonate according to claim 4, characterized in that: the addition amount of the modifier is 2.3-3% of the weight of the calcium carbonate powder.
6. Use of a modifier of modified calcium carbonate according to claim 4, characterized in that: stirring at 2000-3000r/min for 60-90min to obtain the mixture.
7. Use of a modifier of modified calcium carbonate according to claim 4, characterized in that: drying the obtained mixture at 46-50 deg.C until the water content is less than or equal to 0.6%.
8. Use of a modifier of modified calcium carbonate according to claim 4, characterized in that: the mesh number of the modified calcium carbonate is 1000-1200 meshes.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010099160A1 (en) * | 2009-02-26 | 2010-09-02 | Arkema Inc. | Composite polymer modifiers |
| CN108794932A (en) * | 2018-06-29 | 2018-11-13 | 钦州市宝业坭兴陶厂 | It a kind of method of modifying of nano-calcium carbonate and its applies in PVC wood plastic plank |
| CN108892886A (en) * | 2018-05-24 | 2018-11-27 | 贺州钟山县双文碳酸钙新材料有限公司 | Modified calcium carbonate Reinforced PVC tubing and preparation method |
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2019
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010099160A1 (en) * | 2009-02-26 | 2010-09-02 | Arkema Inc. | Composite polymer modifiers |
| CN108892886A (en) * | 2018-05-24 | 2018-11-27 | 贺州钟山县双文碳酸钙新材料有限公司 | Modified calcium carbonate Reinforced PVC tubing and preparation method |
| CN108794932A (en) * | 2018-06-29 | 2018-11-13 | 钦州市宝业坭兴陶厂 | It a kind of method of modifying of nano-calcium carbonate and its applies in PVC wood plastic plank |
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Application publication date: 20200417 |