CN104327767A - Preparation method of polypropylene adhesive for pipeline corrosion prevention - Google Patents
Preparation method of polypropylene adhesive for pipeline corrosion prevention Download PDFInfo
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- CN104327767A CN104327767A CN201410618699.8A CN201410618699A CN104327767A CN 104327767 A CN104327767 A CN 104327767A CN 201410618699 A CN201410618699 A CN 201410618699A CN 104327767 A CN104327767 A CN 104327767A
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Abstract
The invention discloses a preparation method of a polypropylene adhesive for pipeline corrosion prevention. The preparation method comprises the steps of mixing 100 parts of matrix resin, 1-2 parts of first grafting monomer, 1-3 parts of second grafting monomer and 0.1-0.2 part of initiator and extruding to obtain polypropylene grafted monomer masterbatch, and mixing 5-30 parts of polypropylene grafted monomer masterbatch with 40-70 parts of polypropylene resin, 5-10 parts of tackifier, 5-20 parts of elastomer and 0.1-1 part of antioxidizer, and extruding to obtain adhesive for pipeline corrosion prevention. The method has simplified production formula and simple process equipment and technological process, and the obtained product is environment-friendly, has good heat resisting property, high bonding strength and high stability, has other physical properties and performances, which also meet the standard requirements, and is suitable for large industrial production.
Description
Technical field
The present invention relates to macromolecule adhesive field, particularly relate to a kind of preparation method for pipeline corrosion protection polypropylene adhesive.
Background technology
Be proposed Layer polyethylene system preservative coat from the eighties in last century, three-decker is made up of bottom epoxy powder, middle level tackiness agent, outer polyolefine.Layer polyethylene system preservative coat makes it be widely used in oil and gas pipes because it has the feature such as good adhesiveproperties, electrical insulation capability, waterproof and chemistry-resistant characteristic and good intensity, shock resistance.Wherein the critical material of three layers of polyolefin coating is copolymer adhesive, and for three-layer polypropylene preservative coat, tackiness agent is propylene copolymer, adds MALEIC ANHYDRIDE grafting and forms.On painting wiring, the tackiness agent melted during epoxy gel is squeezed in outside epoxy powder layer, tackiness agent participates in curable epoxide reaction, generation chemical bond connects, the acrylic resin of fusing is squeezed in the surface of the tackiness agent of fusing, owing to belonging to same material, the two has fabulous consistency again, can not there is intermediate(coat)peeling in the three-layer composite structure of such formation, thus improve pipeline external anti-corrosion layer mechanical property and comprehensive anticorrosive index.
The defect that existing polypropylene middle layer tackiness agent exists and deficiency:
1) due to by many factors such as production unit, formula and techniques, make the percentage of grafting of graft product in existing tackiness agent unstable, thus affect the stability of product stripping strength;
2) resistance toheat of tackiness agent is poor, graft product percentage of grafting is low, causes the cohesive strength of product inadequate;
3) environment and health is affected because of the grafted monomer of residual irritating smell in product.
Summary of the invention
For above-mentioned Problems existing, the invention provides the preparation method that a kind of 3PP pipeline corrosion protection sticks with glue agent; Method production formula of the present invention simplifies, processing unit and flow process simple, product environmental protection, resistance toheat is good, bonding strength is large, stability is high, other physical property and performance also conformance with standard requirement, and is suitable for large industrialized and produces.
In order to achieve the above object, the technical solution used in the present invention is as follows: a kind of preparation method of pipeline corrosion protection polypropylene sizing agent, be matrix resin 100 parts by parts by weight, first grafted monomer 1-2 part, second grafted monomer 1-3 part and initiator 0.1-0.2 part extrudes and draw polypropylene grafted monomer masterbatch through mixing, then get the polypropylene grafted monomer masterbatch of 5-30 part, by it with acrylic resin 40-70 part, tackifier 5-10 part, elastomerics 5-20 part, oxidation inhibitor 0.1-1 part obtains anti-corrosion pipeline stick with glue agent through mixing to extrude; Its detailed preparation method is as follows:
1) preparation of polypropylene grafted monomer masterbatch: matrix resin 100 parts, first grafted monomer 1-2 part, second grafted monomer 1-3 part and initiator 0.1-0.2 part are placed in high-speed mixer, control rotating speed 200r/min, at room temperature stir 3-5 minute, again compound is passed through reactive extrursion type twin screw extruder, screw speed controls as 250-300r/min, extrusion temperature 190-210 DEG C, extruding pelletization, obtained polypropylene grafted monomer masterbatch;
Matrix resin of the present invention is high workability block copolymerization polypropylene; Described high workability block copolymerization polypropylene is made up of 90% block copolymerization polypropylene and 10% ethylene-vinyl acetate copolymer (EVA).
First grafted monomer of the present invention is the one in maleic anhydride, vinylformic acid, dibutyl maleinate; Wherein preferred scheme is maleic anhydride.
Second grafted monomer of the present invention is the one in vinylbenzene and Viscoat 295, wherein preferably vinylbenzene.
Initiator of the present invention is the one in dicumyl peroxide, benzoyl peroxide and ditert-butyl peroxide, wherein preferably ditert-butyl peroxide.
2) 3PP anti-corrosion pipeline sticks with glue the preparation of agent: by the polypropylene grafted monomer masterbatch obtained in step 1, get the polypropylene grafted monomer masterbatch of 5-30 part, then equal in high-speed mixer with the acrylic resin of 40-70 part, the tackifier of 5-10 part, the elastomerics of 5-20 part, the oxidation inhibitor of 0.1-1 part, controlling rotating speed is 500 r/min, at room temperature stir 3-5 minute, again by the material that mixes through commixed type twin screw extruder, extrusion temperature is set to 190-220 DEG C, screw speed is 150-200r/min, extruding pelletization, obtains product.
Tackifier of the present invention are the one in terpenes, coumarone, indene resin and petroleum resin, wherein preferably petroleum resin.
Elastomerics of the present invention is ethylene-octene segmented copolymer, described ethylene-octene segmented copolymer is made up of many block structures of soft section and hard section, described soft section is the amorphous segment of high octene content, described hard section is the few high crystalline segment of octene content, in described soft section, the molar fraction content of high octene is 27%-28%, and in described hard section, the molar fraction content of octene is 1.4%-1.5%.
The invention has the advantages that: the present invention, by deeply carrying out the optimization of composition and engineering condition, adopts the technical process (as shown in Figure 1) of two-step approach, being respectively crosslinking reaction modification and preparing polypropylene grafted monomer masterbatch and blending and modifying prepares polypropylene adhesive.Polyacrylic excessive degradation and strengthening devolatilization is controlled in reactive extrursion process, prepare a kind of Graft Polypropylene of the high percentage of grafting that has no irritating odor, then after forcing machine extruding pelletization, obtain the polypropylene adhesive that a kind of resistance toheat is good, cohesive strength is large, stability is high after it being mixed with auxiliary agents such as acrylic resin, tackifier, elastomerics, oxidation inhibitor.
Have the following advantages in technical scheme of the present invention:
1) add second comonomer in the preparation process of polypropylene grafted monomer masterbatch and effectively can suppress degradation of polypropylene, can also percentage of grafting be improved simultaneously, and then improve the stripping strength of the finished product; Select ditert-butyl peroxide (DTBP) to be initiator simultaneously, ensure that product has no irritating odor, thus improve production environment, embody the production theory that people-oriented.
2) in the preparation process of tackiness agent, add elastomeric ethylene-octene segmented copolymer (OBC), making tackiness agent have better low temperature impact toughness compared to adding other elastomerics, there is high heat resistance energy, and processing characteristics is excellent simultaneously.
In sum, the present invention by the various material of reasonable selection and auxiliary agent, depth optimization production formula and processing condition and flow process, thus obtain the preparation method of the polypropylene adhesive that a kind of resistance toheat is good, cohesive strength is large, stability is high.
Accompanying drawing explanation
Fig. 1 is production technological process of the present invention.
Embodiment
Illustrate that the present invention is described in further detail below in conjunction with embodiment and accompanying drawing.
embodiment 1:
The formula of the preparation of polypropylene grafted monomer masterbatch: matrix resin: by weight percentage, is made up of 90% block copolymerization polypropylene and 10% ethylene-vinyl acetate copolymer (EVA); First grafted monomer: maleic anhydride (MAH), consumption is 1.0% of matrix resin; Second grafted monomer: vinylbenzene (St), consumption is 1.0% of matrix resin; Initiator: ditert-butyl peroxide (DTBP), consumption is 0.1% of matrix resin.
The technical process of concrete production is as shown in Figure 1:
(1) preparation of polypropylene grafted monomer masterbatch: matrix resin, the first grafted monomer, the second grafted monomer and initiator are added in high-speed mixer successively, control rotating speed 200r/min, at room temperature stir 3-5 minute, by reactive extrursion type twin screw extruder (SHJ-30 type, length-to-diameter ratio L/D=52:1) each section of temperature be set as 190-210 DEG C, screw speed is 300 r/min, extrude, tie rod, water-cooled, air knife drying, pelletizing.Material grain to be set as in 105 DEG C of vacuum drying ovens dry 2 hours in temperature, to obtain polypropylene grafted monomer masterbatch.
(2) 3PP anti-corrosion pipeline sticks with glue the preparation of agent: get 70 parts of acrylic resins, 15 parts of polypropylene grafted monomer masterbatch, 5 parts of petroleum resin, 10 parts of elastomerics OBC, 0.2 part of oxidation inhibitor B225 in high-speed mixer, controlling rotating speed is 500 r/min, at room temperature stir 3-5 minute, again by the material that mixes through commixed type twin screw extruder (MT-36 type), extrusion temperature is set to 190-220 DEG C, screw speed is 200r/min, extruding pelletization, obtains target product 3PP pipeline corrosion protection and sticks with glue agent.
embodiment 2:
The preparation formula of polypropylene grafted monomer masterbatch: matrix resin: by weight percentage, is made up of 90% block copolymerization polypropylene and 10% ethylene-vinyl acetate copolymer (EVA); First grafted monomer: maleic anhydride (MAH), consumption is 1.5% of matrix resin; Second grafted monomer: vinylbenzene (St) consumption is 1.8% of matrix resin; Initiator: ditert-butyl peroxide (DTBP), consumption is 0.15% of matrix resin.
The technical process of concrete production is as shown in Figure 1:
(1) preparation of polypropylene grafted monomer masterbatch: matrix resin, the first grafted monomer, the second grafted monomer and initiator are added in high-speed mixer successively, control rotating speed 200r/min, at room temperature stir 3-5 minute, by reactive extrursion type twin screw extruder (SHJ-30 type, length-to-diameter ratio L/D=52:1) each section of temperature be set as 190-210 DEG C, screw speed is 280 r/min, extrude, tie rod, water-cooled, air knife drying, pelletizing.Material grain to be set as in 105 DEG C of vacuum drying ovens dry 2 hours in temperature, to obtain polypropylene grafted monomer masterbatch.
(2) 3PP anti-corrosion pipeline sticks with glue the preparation of agent: get 60 parts of acrylic resins, 20 parts of polypropylene grafted monomer masterbatch, 8 parts of petroleum resin, 12 parts of elastomerics OBC, 0.2 part of oxidation inhibitor B225 in high-speed mixer, controlling rotating speed is 500 r/min, at room temperature stir 3-5 minute, again by the material that mixes through commixed type twin screw extruder (MT-36 type), extrusion temperature is set to 190-220 DEG C, screw speed is 180r/min, extruding pelletization, obtains target product 3PP pipeline corrosion protection and sticks with glue agent.
embodiment 3:
The formula of the preparation of polypropylene grafted monomer masterbatch: matrix resin: by weight percentage, is made up of 90% block copolymerization polypropylene and 10% ethylene-vinyl acetate copolymer (EVA);
First grafted monomer: maleic anhydride (MAH), consumption is 2.0% of matrix resin; Second grafted monomer: vinylbenzene (St), consumption is 3.0% of matrix resin; Initiator: ditert-butyl peroxide (DTBP), consumption is 0.2% of matrix resin.
The technical process of concrete production is as shown in Figure 1:
(1) preparation of polypropylene grafted monomer masterbatch: matrix resin, the first grafted monomer, the second grafted monomer and initiator are added in high-speed mixer successively, control rotating speed 200r/min, at room temperature stir 3-5 minute, by reactive extrursion type twin screw extruder (SHJ-30 type, length-to-diameter ratio L/D=52:1) each section of temperature be set as 190-210 DEG C, screw speed is 250 r/min, extrude, tie rod, water-cooled, air knife drying, pelletizing.Material grain to be set as in 105 DEG C of vacuum drying ovens dry 2 hours in temperature, to obtain polypropylene grafted monomer masterbatch.
(2) 3PP anti-corrosion pipeline sticks with glue the preparation of agent: get 45 parts of acrylic resins, 30 parts of polypropylene grafted monomer masterbatch, 10 parts of petroleum resin, 15 parts of elastomerics OBC, 0.4 part of oxidation inhibitor B225 in high-speed mixer, controlling rotating speed is 500 r/min, at room temperature stir 3-5 minute, again by the material that mixes through commixed type twin screw extruder (MT-36 type), extrusion temperature is set to 190-220 DEG C, screw speed is 150r/min, extruding pelletization, obtains target product 3PP pipeline corrosion protection and sticks with glue agent.
embodiment 4:
The formula of the preparation of polypropylene grafted monomer masterbatch: matrix resin: by weight percentage, is made up of 90% block copolymerization polypropylene and 10% ethylene-vinyl acetate copolymer (EVA);
First grafted monomer: vinylformic acid (AA), consumption is 2.0% of matrix resin; Second grafted monomer: Viscoat 295 (TMPTA), consumption is 3.0% of matrix resin; Initiator: dicumyl peroxide (DCP), consumption is 0.2% of matrix resin.
The technical process of concrete production is as shown in Figure 1:
(1) preparation of polypropylene grafted monomer masterbatch: matrix resin, the first grafted monomer, the second grafted monomer and initiator are added in high-speed mixer successively, control rotating speed 200r/min, at room temperature stir 3-5 minute, by reactive extrursion type twin screw extruder (SHJ-30 type, length-to-diameter ratio L/D=52:1) each section of temperature be set as 190-210 DEG C, screw speed is 250 r/min, extrude, tie rod, water-cooled, air knife drying, pelletizing.Material grain to be set as in 105 DEG C of vacuum drying ovens dry 2 hours in temperature, to obtain polypropylene grafted monomer masterbatch.
(2) 3PP anti-corrosion pipeline sticks with glue the preparation of agent: get 45 parts of acrylic resins, 30 parts of polypropylene grafted monomer masterbatch, 10 parts of terpenes, 15 parts of elastomerics OBC, 0.6 part of oxidation inhibitor B225 in high-speed mixer, controlling rotating speed is 500 r/min, at room temperature stir 3-5 minute, again by the material that mixes through commixed type twin screw extruder (MT-36 type), extrusion temperature is set to 190-220 DEG C, screw speed is 150r/min, extruding pelletization, obtains target product 3PP pipeline corrosion protection and sticks with glue agent.
embodiment 5:
The formula of the preparation of polypropylene grafted monomer masterbatch: matrix resin: by weight percentage, is made up of 90% block copolymerization polypropylene and 10% ethylene-vinyl acetate copolymer (EVA);
First grafted monomer: dibutyl maleinate (DBM), consumption is 2.0% of matrix resin; Second grafted monomer: Viscoat 295 (TMPTA), consumption is 3.0% of matrix resin; Initiator: benzoyl peroxide (BPO), consumption is 0.2% of matrix resin.
The technical process of concrete production is as shown in Figure 1:
(1) preparation of polypropylene grafted monomer masterbatch: matrix resin, the first grafted monomer, the second grafted monomer and initiator are added in high-speed mixer successively, control rotating speed 200r/min, at room temperature stir 3-5 minute, by reactive extrursion type twin screw extruder (SHJ-30 type, length-to-diameter ratio L/D=52:1) each section of temperature be set as 190-210 DEG C, screw speed is 250 r/min, extrude, tie rod, water-cooled, air knife drying, pelletizing.Material grain to be set as in 105 DEG C of vacuum drying ovens dry 2 hours in temperature, to obtain polypropylene grafted monomer masterbatch.
(2) 3PP anti-corrosion pipeline sticks with glue the preparation of agent: get 45 parts of acrylic resins, 30 parts of polypropylene grafted monomer masterbatch, 10 parts of indene resins, 15 parts of elastomerics OBC, 0.8 part of oxidation inhibitor B225 in high-speed mixer, controlling rotating speed is 500 r/min, at room temperature stir 3-5 minute, again by the material that mixes through commixed type twin screw extruder (MT-36 type), extrusion temperature is set to 190-220 DEG C, screw speed is 150r/min, extruding pelletization, obtains target product 3PP pipeline corrosion protection and sticks with glue agent.
embodiment 6:the product obtained in embodiment 1-5 is carried out basic performance test with the product bought on the market contrast, the result recorded is as shown in the table:
Can draw from upper table, each embodiment of the present invention has clear superiority compared to commercial polypropylene tackiness agent, shows the aspects such as materials processing performance, mechanical property, stripping strength.Embodiment 1-3 is with preferred grafted monomer, initiator, tackifier etc., obtains the polypropylene adhesive of over-all properties the best, i.e. embodiment 3 by changing formulation ratio.Select best one group of embodiment to carry out simultaneous test again, namely in embodiment 4-5, the consumption of each auxiliary agent is identical with embodiment 3, but changes each auxiliary agent kind.Result shows, and selects the polypropylene adhesive over-all properties of preferred promoter one group (embodiment 3) to be better than other group (embodiment 4,5).Can show that the 3PP anti-corrosion pipeline obtained by the present invention sticks with glue the resistance toheat of agent, cohesive strength, stability are better than commercially available polypropylene adhesive thus comprehensively, there is very large industrial production and be worth.
It should be noted that, above-mentioned is only preferred embodiment of the present invention, is not used for limiting protection scope of the present invention, and equivalents done on the basis of above-described embodiment all belongs to protection scope of the present invention.
Claims (7)
1. the pipeline corrosion protection preparation method of polypropylene sizing agent, it is characterized in that, be matrix resin 100 parts by parts by weight, first grafted monomer 1-2 part, second grafted monomer 1-3 part and initiator 0.1-0.2 part extrudes and draw polypropylene grafted monomer masterbatch through mixing, then get the polypropylene grafted monomer masterbatch of 5-30 part, by it with acrylic resin 40-70 part, tackifier 5-10 part, elastomerics 5-20 part, oxidation inhibitor 0.1-1 part obtains anti-corrosion pipeline stick with glue agent through mixing to extrude; Its detailed preparation method is as follows:
1) preparation of polypropylene grafted monomer masterbatch: matrix resin 100 parts, first grafted monomer 1-2 part, second grafted monomer 1-3 part and initiator 0.1-0.2 part are placed in high-speed mixer, control rotating speed 200r/min, at room temperature stir 3-5 minute, again compound is passed through reactive extrursion type twin screw extruder, screw speed controls as 250-300r/min, extrusion temperature 190-210 DEG C, extruding pelletization, obtained polypropylene grafted monomer masterbatch;
2) 3PP anti-corrosion pipeline sticks with glue the preparation of agent: by the polypropylene grafted monomer masterbatch obtained in step 1, get the polypropylene grafted monomer masterbatch of 5-30 part, then equal in high-speed mixer with the acrylic resin of 40-70 part, the tackifier of 5-10 part, the elastomerics of 5-20 part, the oxidation inhibitor of 0.1-1 part, controlling rotating speed is 500 r/min, at room temperature stir 3-5 minute, again by the material that mixes through commixed type twin screw extruder, extrusion temperature is set to 190-220 DEG C, screw speed is 150-200r/min, extruding pelletization, obtains product.
2. the preparation method of pipeline corrosion protection polypropylene sizing agent according to claim 1, is characterized in that, described matrix resin is high workability block copolymerization polypropylene.
3. the preparation method of pipeline corrosion protection polypropylene sizing agent according to claim 1, is characterized in that, the first described grafted monomer is the one in maleic anhydride, vinylformic acid, dibutyl maleinate.
4. the preparation method of pipeline corrosion protection polypropylene sizing agent according to claim 1, is characterized in that, the second described grafted monomer is the one in vinylbenzene and Viscoat 295.
5. the preparation method of pipeline corrosion protection polypropylene sizing agent according to claim 1, is characterized in that, described initiator is the one in dicumyl peroxide, benzoyl peroxide and ditert-butyl peroxide.
6. the preparation method of pipeline corrosion protection polypropylene sizing agent according to claim 1, is characterized in that, described tackifier are the one in terpenes, coumarone, indene resin and petroleum resin.
7. the preparation method of pipeline corrosion protection polypropylene sizing agent according to claim 1, it is characterized in that, described elastomerics is ethylene-octene segmented copolymer, described ethylene-octene segmented copolymer is made up of many block structures of soft section and hard section, described soft section is the amorphous segment of high octene content, described hard section is the few high crystalline segment of octene content, in described soft section, the molar fraction content of high octene is 27%-28%, and in described hard section, the molar fraction content of octene is 1.4%-1.5%.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105567135A (en) * | 2015-12-31 | 2016-05-11 | 广州鹿山新材料股份有限公司 | Polypropylene adhesive powder for anticorrosion pipelines and preparation method thereof |
| CN106318274A (en) * | 2016-08-25 | 2017-01-11 | 中国石油天然气集团公司 | Polypropylene hot melt adhesive, preparation method thereof and preparation method of polypropylene contraction band |
| CN106479401A (en) * | 2016-11-30 | 2017-03-08 | 黄山贝诺科技有限公司 | A kind of anti-corrosion pipeline polypropylene adhesive powder and preparation method thereof |
| CN108517184A (en) * | 2018-04-20 | 2018-09-11 | 裴泽民 | A kind of glued board Thermoplastic adhesive |
| CN109705772A (en) * | 2018-12-14 | 2019-05-03 | 广东莱尔新材料科技股份有限公司 | A kind of high electric strength and resistance to electrochemical trace POE glue film and preparation method |
| CN113571237A (en) * | 2020-04-29 | 2021-10-29 | 中国石油化工股份有限公司 | High-performance polypropylene cable |
| WO2021218102A1 (en) * | 2020-04-29 | 2021-11-04 | 中国石油化工股份有限公司 | Polypropylene graft containing anhydride group and preparation method for polypropylene graft |
| RU2829807C1 (en) * | 2020-04-29 | 2024-11-06 | Чайна Петролеум Энд Кемикал Корпорейшн | Grafted polypropylene containing anhydride group, and method of preparing grafted polypropylene |
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Cited By (12)
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| CN105567135A (en) * | 2015-12-31 | 2016-05-11 | 广州鹿山新材料股份有限公司 | Polypropylene adhesive powder for anticorrosion pipelines and preparation method thereof |
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| CN106479401A (en) * | 2016-11-30 | 2017-03-08 | 黄山贝诺科技有限公司 | A kind of anti-corrosion pipeline polypropylene adhesive powder and preparation method thereof |
| CN106479401B (en) * | 2016-11-30 | 2018-01-23 | 黄山贝诺科技有限公司 | A kind of anti-corrosion pipeline polypropylene adhesive powder and preparation method thereof |
| CN108517184A (en) * | 2018-04-20 | 2018-09-11 | 裴泽民 | A kind of glued board Thermoplastic adhesive |
| CN109705772A (en) * | 2018-12-14 | 2019-05-03 | 广东莱尔新材料科技股份有限公司 | A kind of high electric strength and resistance to electrochemical trace POE glue film and preparation method |
| CN109705772B (en) * | 2018-12-14 | 2020-09-08 | 广东莱尔新材料科技股份有限公司 | POE (polyolefin elastomer) adhesive film with high electrical strength and resistance to electrochemical tracking and preparation method thereof |
| CN113571237A (en) * | 2020-04-29 | 2021-10-29 | 中国石油化工股份有限公司 | High-performance polypropylene cable |
| WO2021218102A1 (en) * | 2020-04-29 | 2021-11-04 | 中国石油化工股份有限公司 | Polypropylene graft containing anhydride group and preparation method for polypropylene graft |
| CN113571237B (en) * | 2020-04-29 | 2023-03-14 | 中国石油化工股份有限公司 | High-performance polypropylene cable |
| RU2829807C1 (en) * | 2020-04-29 | 2024-11-06 | Чайна Петролеум Энд Кемикал Корпорейшн | Grafted polypropylene containing anhydride group, and method of preparing grafted polypropylene |
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