CN110885510A - Water dispersion system plasticized PVC resin and preparation method thereof - Google Patents
Water dispersion system plasticized PVC resin and preparation method thereof Download PDFInfo
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- CN110885510A CN110885510A CN201911224527.1A CN201911224527A CN110885510A CN 110885510 A CN110885510 A CN 110885510A CN 201911224527 A CN201911224527 A CN 201911224527A CN 110885510 A CN110885510 A CN 110885510A
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- 229920005989 resin Polymers 0.000 title claims abstract description 89
- 239000011347 resin Substances 0.000 title claims abstract description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 229920012485 Plasticized Polyvinyl chloride Polymers 0.000 title claims abstract description 50
- 239000006185 dispersion Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 19
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 49
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 17
- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- 239000004014 plasticizer Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 62
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 36
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 18
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000006116 polymerization reaction Methods 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical group CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001291 vacuum drying Methods 0.000 claims description 10
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 229920001213 Polysorbate 20 Polymers 0.000 claims description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- -1 polyoxyethylene octylphenol Polymers 0.000 claims description 2
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 claims description 2
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 claims description 2
- 230000003113 alkalizing effect Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 8
- 229910052793 cadmium Inorganic materials 0.000 abstract description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000012760 heat stabilizer Substances 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000001704 evaporation Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 238000011056 performance test Methods 0.000 description 8
- 238000006731 degradation reaction Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000012662 bulk polymerization Methods 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- OSDWBNJEKMUWAV-UHFFFAOYSA-N Allyl chloride Chemical group ClCC=C OSDWBNJEKMUWAV-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 description 1
- 208000034874 Product colour issue Diseases 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007033 dehydrochlorination reaction Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012875 nonionic emulsifier Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
Abstract
The invention discloses a water dispersion system plasticized PVC resin, and a water dispersion system plasticized PVC resin mixture does not contain toxic heat stabilizers such as cadmium, lead and the like. Water is used as a medium to prepare water dispersion system plasticized PVC resin; and in the preparation process, hot processing can be effectively avoided, and the stability of the material is effectively improved. The water dispersion system plasticized PVC resin is prepared from the following raw materials in parts by mass: 100 parts of PVC resin, 80-100 parts of plasticizer, 70-150 parts of water, 1-3 parts of emulsifier, 1-2 parts of stabilizer and 0.1-0.2 part of acid-base regulator.
Description
Technical Field
The invention relates to a PVC resin and a preparation method thereof, in particular to a water dispersion system plasticized PVC resin and a preparation method thereof.
Background
PVC resin is one of the earliest resin varieties for realizing industrial production, and the product has the advantages of nonflammability, corrosion resistance, wear resistance, good electrical insulation, good mechanical property and the like. In the processing process of PVC resin, products suitable for different occasions, including pipes, plates, profiles, cables, films and the like, can be prepared by adding different functional additives, and related products are widely applied to various fields of buildings, packaging materials, daily necessities and the like. At present, there are four main production processes for PVC resin, which are bulk polymerization, solution polymerization, suspension polymerization and emulsion polymerization.
The mass polymerization method does not need to add water and a dispersing agent in the production process, can carry out polymerization reaction only by adding an initiator, and does not need post-treatment equipment. Therefore, the production process is simple and the cost is low. The PVC resin product produced by the bulk polymerization method has high purity, good transparency, no water or solvent and little pollution, so the post-treatment is simple and convenient. However, in the polymerization process, the heat of the stirring polymerization reaction of the materials is not easy to be led out, and in the industrial production process, a step-by-step polymerization method is needed to solve the problem.
In the solution polymerization method, monomers need to be dissolved in an organic solvent to initiate polymerization in the production process, and the heat of polymerization reaction is easy to transfer. The polymer prepared by the solution polymerization method is insoluble in a solvent, is easy to precipitate in the polymerization process, and is easy to separate and dry. The polymer produced by the method does not contain an emulsifier and a dispersant, so that the product is pure and uniform and has unique solubility and film forming property. However, the solution polymerization method has complex process, high organic solvent recovery cost and strong pollution.
The suspension polymerization method is a main synthesis method for producing PVC resin, in which monomer droplets are kept in a suspended state in water by stirring, and a polymerization reaction is completed in the formed monomer droplets. The method has the characteristics of mature and easily controlled production process, simple and convenient processing operation, low production cost, high product quality, wide application range and the like. The polymer produced by the method does not contain an emulsifier, has good thermal stability and electrical insulation, and is suitable for various molding modes.
The emulsion polymerization process requires the addition of a large amount of emulsifier during the production process, and the monomers are dispersed in water by means of the emulsifier for polymerization. The polymerization method can effectively transfer polymerization heat, prevent polymer particles from agglomerating, and obtain polymer resin with small particle size and high purity. Emulsion polymerization is commonly used for the preparation of PVC paste resins, but the electrical insulation is poor due to the high emulsifier content in the product.
Although the PVC synthesis process is mature, the PVC synthesis process has obvious defect structures such as tertiary chlorine atoms, allyl chloride structures and the like. These defective structures make PVC resin susceptible to degradation reaction and dehydrochlorination under the action of ambient light, heat, oxygen, etc. PVC undergoes degradation reactions when heated to 100 ℃. The double bond generated during the degradation of PVC activates the chlorine atom on its carbon atom, i.e., the allyl chloride atom, causing the expulsion of the HCl molecule. When PVC is heated to 100-200 ℃, severe degradation occurs, except HCl removal, macromolecular crosslinking phenomenon also occurs, which leads to product discoloration and performance reduction. And the presence of oxygen tends to accelerate the degradation reaction of PVC. In the traditional production process, PVC products are subjected to thermal processing for many times in the production process, and the broken unstable structure and the separated small molecular chemical substances are easy to cause material performance reduction and yellowing, and even cause environmental protection problems. Therefore, in order to ensure that the PVC product maintains stable properties during processing and use, the PVC resin and the stabilizer are usually mixed, granulated or plasticized. In the traditional production process, PVC resin needs to be subjected to multiple times of thermal processing, and the addition of the stabilizer cannot completely ensure that PVC does not undergo degradation reaction in the thermal processing process, so that the invention of the water dispersion system plasticized PVC resin which does not need to be subjected to multiple times of thermal processing is urgently needed. The PVC resin can obtain PVC products through water evaporation, and can effectively avoid the problem of poor material stability caused by multiple times of thermal processing.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a plasticized PVC resin with an aqueous dispersion system, wherein the plasticized PVC resin with the aqueous dispersion system does not contain toxic heat stabilizers such as cadmium, lead and the like.
The invention also provides a preparation method of the water dispersion system plasticized PVC resin, which takes water as a medium to prepare the water dispersion system plasticized PVC resin; and in the preparation process, hot processing can be effectively avoided, and the stability of the material is effectively improved.
The invention is realized by the following technical scheme:
the water dispersion system plasticized PVC resin is prepared from the following raw materials in parts by mass:
the water dispersion system plasticized PVC resin has the further technical scheme that the PVC resin is synthesized by an emulsion polymerization method, the particle size range of the PVC resin is 0.1-0.2 mu m, and the average polymerization degree is 1000-1800.
The water dispersion system of the invention plasticizes PVC resin, and a further technical proposal can also be that the plasticizer is dioctyl terephthalate.
The water dispersion system plasticizing PVC resin of the invention, further technical scheme can also be that the emulsifier is one or combination of nonionic emulsifier polyoxyethylene octyl phenol ether-10 and Tween 20.
The above-mentioned water dispersion system plasticizes PVC resin, its further technical scheme can also be that the said stabilizer is one or their combination of calcium stearate and zinc stearate.
The water dispersion system plasticized PVC resin further adopts the technical scheme that the acid-base regulator is sodium bicarbonate.
According to a further technical scheme of the water dispersion system plasticized PVC resin, the water is deionized water.
The preparation method of the water dispersion system plasticized PVC resin comprises the following steps:
① adding the emulsifier, the acid-base regulator and water into a stirring barrel, heating and stirring at the stirring speed of 100-200 r/min and the temperature of 20-30 ℃ for 10-20 min;
②, continuously adding PVC resin and a stabilizer in the stirring barrel, controlling the speed to be 100-300 r/min, starting stirring, slowly adding a plasticizer after 3-5 min, and continuously stirring for 20-30 min to obtain low-viscosity plasticized PVC resin paste;
③ placing the stirred low-viscosity plasticized PVC resin paste into a vacuum drying oven for standing for 1-4 h at room temperature, wherein the vacuum pressure is kept between-0.06 MPa and-0.1 MPa during standing.
④ after standing, the plasticized PVC resin paste is cast on a flat plate, the temperature is controlled to be 100-110 ℃, and water is evaporated to obtain the water dispersion system plasticized PVC resin.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a preparation technology of water dispersion system plasticized PVC resin, which can effectively prevent PVC materials from undergoing multiple hot working in the production process, ensure that the materials are not easy to generate degradation reaction in the preparation process, and greatly improve the production stability and the use stability of the materials.
Detailed Description
The present invention will be described below with reference to specific examples, but the present invention is not limited to these examples.
Example 1
The raw materials comprise the following components in parts by mass: 100 parts of emulsion PVC resin, 100 parts of dioctyl terephthalate, 100 parts of deionized water, OP 101, 1.0 part of CaSt and 0.1 part of sodium bicarbonate.
The preparation method comprises the steps of ① adding the emulsifier, the sodium bicarbonate and the water into a stirring barrel, heating and stirring at the stirring speed of 100r/min and the temperature of 20 ℃ for 20min, ② continuing to add 100 parts of emulsion PVC resin and 1 part of stabilizer into the stirring barrel, controlling the speed of 200r/min to start stirring, slowing down the plasticizer after 3min, continuing to stir for 20min, ③ placing the stirred plasticized PVC resin paste into a vacuum drying oven to stand for 4h at the room temperature, keeping the vacuum pressure at-0.08 MPa during standing, pouring and coating the plasticized PVC resin paste on a flat plate after the ④ is kept standing, controlling the temperature to be 100 ℃, evaporating water to obtain the finished product, and the performance test results are shown in table 1.
Example 2
The raw materials comprise the following components in parts by mass: 100 parts of emulsion PVC resin, 100 parts of dioctyl terephthalate, 70 parts of deionized water, OP 103, 1.5 parts of ZnSt and 0.2 part of sodium bicarbonate.
The preparation method comprises the steps of ① adding the emulsifier, the sodium bicarbonate and the water into a stirring barrel, heating and stirring at the stirring speed of 150r/min and the temperature of 25 ℃ for 15min, ② continuing to add 100 parts of emulsion PVC resin and 1.5 parts of stabilizer into the stirring barrel, controlling the speed of 250r/min to start stirring, slowing down the plasticizer after 5min, continuing to stir for 25min, ③ placing the stirred plasticized PVC resin paste into a vacuum drying oven for standing for 1h at room temperature, keeping the vacuum pressure at-0.08 MPa during standing, pouring and coating the ④ plasticized PVC resin paste on a flat plate after standing is finished, controlling the temperature to be 105 ℃, evaporating water, and obtaining the finished product, wherein the performance test results are shown in table 1.
Example 3
The raw materials comprise the following components in parts by mass: 100 parts of emulsion PVC resin, 80 parts of dioctyl terephthalate, 150 parts of deionized water, 201 parts of Tween, 1.5 parts of ZnSt and 0.1 part of sodium bicarbonate.
The preparation method comprises the steps of ① adding the emulsifier, the sodium bicarbonate and the water into a stirring barrel, heating and stirring at the stirring speed of 150r/min and the temperature of 20 ℃ for 15min, ② continuing to add 100 parts of emulsion PVC resin and 1.5 parts of stabilizer into the stirring barrel, controlling the speed of 250r/min to start stirring, slowing down the plasticizer after 4min, continuing to stir for 30min, ③ placing the stirred plasticized PVC resin paste into a vacuum drying oven for standing for 1h at room temperature, keeping the vacuum pressure at-0.06 MPa during standing, after the completion of standing of ④ plasticized PVC resin paste, pouring and coating the paste on a flat plate, controlling the temperature at 100 ℃ and evaporating water to obtain a finished product, wherein performance test results are shown in Table 1.
Example 4
The raw materials comprise the following components in parts by mass: 100 parts of emulsion PVC resin, 80 parts of dioctyl terephthalate, 100 parts of deionized water, 202 parts of Tween, 2.0 parts of CaSt and 0.2 part of sodium bicarbonate.
The preparation method comprises the steps of ① adding the emulsifier, the sodium bicarbonate and the water into a stirring barrel, heating and stirring at the stirring speed of 200r/min and the temperature of 30 ℃ for 10min, ② continuing to add 100 parts of emulsion PVC resin and 2.0 parts of stabilizer into the stirring barrel, controlling the speed to be 300r/min, starting stirring, slowing down the plasticizer after 5min, continuing to stir for 20min, ③ placing the stirred plasticized PVC resin paste into a vacuum drying oven for standing for 4h at the room temperature, keeping the vacuum pressure at-0.1 MPa during standing, pouring and coating the ④ plasticized PVC resin paste on a flat plate after standing is finished, controlling the temperature to be 110 ℃, evaporating water, and obtaining the finished product, wherein the performance test results are shown in table 1.
Comparative example 1
The raw materials comprise the following components in parts by mass: 100 parts of emulsion PVC resin, 80 parts of dioctyl terephthalate, 100 parts of deionized water, 3 parts of lauryl sodium sulfate, 1.0 part of ZnSt and 0.1 part of sodium bicarbonate.
The preparation method comprises the steps of ① adding the emulsifier, the sodium bicarbonate and the water into a stirring barrel, heating and stirring at the stirring speed of 200r/min and the temperature of 20 ℃ for 20min, ② continuing to add 100 parts of emulsion PVC resin and 1.0 part of stabilizer into the stirring barrel, controlling the speed to be 150r/min, starting stirring, slowing down the plasticizer after 5min, continuing to stir for 25min, ③ placing the stirred plasticized PVC resin paste into a vacuum drying oven for standing for 1h at the room temperature, keeping the vacuum pressure at-0.08 MPa during the standing, pouring and coating the ④ plasticized PVC resin paste on a flat plate after the standing is finished, controlling the temperature to be 100 ℃, evaporating the water, and obtaining the finished product, wherein the performance test results are shown in table 1.
Comparative example 2
The raw materials comprise the following components in parts by mass: 100 parts of emulsion PVC resin, 100 parts of dioctyl terephthalate, 100 parts of deionized water, 1 part of sodium dodecyl sulfate, 1.5 parts of CaSt and 0.2 part of sodium bicarbonate.
The preparation method comprises the steps of ① adding the emulsifier, the sodium bicarbonate and the water into a stirring barrel, heating and stirring at the stirring speed of 150r/min and the temperature of 25 ℃ for 20min, ② continuing to add 100 parts of emulsion PVC resin and 1.5 parts of stabilizer into the stirring barrel, controlling the speed of 250r/min to start stirring, slowing down the plasticizer after 5min, continuing to stir for 25min, ③ placing the stirred plasticized PVC resin paste into a vacuum drying oven to stand for 1h at room temperature, keeping the vacuum pressure at-0.1 MPa during standing, pouring and coating the ④ plasticized PVC resin paste on a flat plate after standing is finished, controlling the temperature to be 105 ℃, evaporating water, and obtaining the finished product, wherein the performance test results are shown in table 1.
Comparative example 3
The raw materials comprise the following components in parts by mass: 100 parts of emulsion PVC resin, 90 parts of dioctyl terephthalate, 100 parts of deionized water, 603 parts of span, 2.0 parts of ZnSt and 0.1 part of sodium bicarbonate.
The preparation method comprises the steps of ① adding the emulsifier, the sodium bicarbonate and the water into a stirring barrel, heating and stirring at the stirring speed of 200r/min and the temperature of 30 ℃ for 10min, ② continuing to add 100 parts of emulsion PVC resin and 2.0 parts of stabilizer into the stirring barrel, controlling the speed of 200r/min to start stirring, slowing down the plasticizer after 4min, continuing to stir for 30min, ③ placing the stirred plasticized PVC resin paste into a vacuum drying oven to stand for 4h at the room temperature, keeping the vacuum pressure at-0.1 MPa during standing, pouring and coating the ④ plasticized PVC resin paste on a flat plate after standing is finished, controlling the temperature to be 110 ℃, evaporating water, and obtaining the finished product, wherein performance test results are shown in table 1.
Comparative example 4
The raw materials comprise the following components in parts by mass: 100 parts of emulsion PVC resin, 100 parts of dioctyl terephthalate, 100 parts of deionized water, 1.5 parts of CaSt and 0.2 part of sodium bicarbonate.
The preparation method comprises the steps of ① adding sodium bicarbonate and water into a stirring barrel, heating and stirring at the stirring speed of 150r/min and the temperature of 25 ℃ for 20min, ② continuing to add 100 parts of emulsion PVC resin and 1.5 parts of stabilizer into the stirring barrel, controlling the speed of 250r/min to start stirring, slowing down the plasticizer after 4min, continuing to stir for 25min, ③ placing the stirred plasticized PVC resin paste into a vacuum drying oven to stand for 4h at the room temperature, keeping the vacuum pressure at-0.1 MPa during standing, pouring and coating the plasticized PVC resin paste ④ on a flat plate after standing is finished, controlling the temperature to be 110 ℃, evaporating water, and obtaining the finished product, wherein performance test results are shown in table 1.
TABLE 1 comparison of the emulsifying Effect of plasticized PVC resins
Claims (8)
1. The water dispersion system plasticized PVC resin is characterized by being prepared from the following raw materials in parts by mass:
2. the water dispersion plasticized PVC resin according to claim 1, wherein said PVC resin is a PVC resin synthesized by emulsion polymerization, and has a particle size of 0.1-0.2 μm and an average degree of polymerization of 1000-1800.
3. An aqueous dispersion plasticised PVC resin according to claim 1 characterised in that the plasticiser is dioctyl terephthalate.
4. The water dispersion plasticized PVC resin according to claim 1, wherein said emulsifier is selected from the group consisting of polyoxyethylene octylphenol ether-10 and Tween 20, or a combination thereof.
5. A water-dispersed plasticized PVC resin according to claim 1, wherein said stabilizer is one or a combination of calcium stearate and zinc stearate.
6. An aqueous dispersion plasticized PVC resin according to claim 1, characterized in that said acidifying or alkalizing agent is sodium bicarbonate.
7. An aqueous dispersion plasticized PVC resin according to claim 1, characterized in that said water is deionized water.
8. A method for preparing water dispersion plasticized PVC resin according to any one of claims 1 to 7, comprising the steps of:
① adding the emulsifier, the acid-base regulator and water into a stirring barrel, heating and stirring at the stirring speed of 100-200 r/min and the temperature of 20-30 ℃ for 10-20 min;
②, continuously adding PVC resin and a stabilizer in the stirring barrel, controlling the speed to be 100-300 r/min, starting stirring, slowly adding a plasticizer after 3-5 min, and continuously stirring for 20-30 min to obtain low-viscosity plasticized PVC resin paste;
③ placing the stirred low-viscosity plasticized PVC resin paste into a vacuum drying oven for standing for 1-4 h at room temperature, wherein the vacuum pressure is kept between-0.06 MPa and-0.1 MPa during standing.
④ after standing, the plasticized PVC resin paste is cast on a flat plate, the temperature is controlled to be 100-110 ℃, and water is evaporated to obtain the water dispersion system plasticized PVC resin.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048396A (en) * | 1989-06-24 | 1991-01-09 | 河北省轻工业研究所 | Method with producing impregnated products from emulsified polyvinyl resin paste |
| CN102558577A (en) * | 2011-12-19 | 2012-07-11 | 石家庄鸿泰橡胶有限公司 | Method for preparing PVC (polyvinyl chloride) plastisol containing butyronitrile rubber |
| CN106496877A (en) * | 2016-11-23 | 2017-03-15 | 唐山川欧森塑料制品有限公司 | The production method of polyvinyl chloride disposable glove |
| CN106832662A (en) * | 2017-01-14 | 2017-06-13 | 常州大学 | A kind of low VOC environment-friendly type PVCs gloves and preparation method thereof |
| CN107955290A (en) * | 2017-11-17 | 2018-04-24 | 中红普林（北京）医疗用品高新技术研究院有限公司 | A kind of disposable PVC glove and preparation method thereof |
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2019
- 2019-12-04 CN CN201911224527.1A patent/CN110885510B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048396A (en) * | 1989-06-24 | 1991-01-09 | 河北省轻工业研究所 | Method with producing impregnated products from emulsified polyvinyl resin paste |
| CN102558577A (en) * | 2011-12-19 | 2012-07-11 | 石家庄鸿泰橡胶有限公司 | Method for preparing PVC (polyvinyl chloride) plastisol containing butyronitrile rubber |
| CN106496877A (en) * | 2016-11-23 | 2017-03-15 | 唐山川欧森塑料制品有限公司 | The production method of polyvinyl chloride disposable glove |
| CN106832662A (en) * | 2017-01-14 | 2017-06-13 | 常州大学 | A kind of low VOC environment-friendly type PVCs gloves and preparation method thereof |
| CN107955290A (en) * | 2017-11-17 | 2018-04-24 | 中红普林（北京）医疗用品高新技术研究院有限公司 | A kind of disposable PVC glove and preparation method thereof |
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