CN101914250B - Preparation method of environment-friendly modified polyvinyl chloride master batch with high fluidity and heat stability - Google Patents
Preparation method of environment-friendly modified polyvinyl chloride master batch with high fluidity and heat stability Download PDFInfo
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- RWXOJQGSZWUIEJ-UHFFFAOYSA-K lanthanum(3+);octadecanoate Chemical group [La+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O RWXOJQGSZWUIEJ-UHFFFAOYSA-K 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 229960004274 stearic acid Drugs 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- -1 acrylic ester Chemical class 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
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- 150000004665 fatty acids Chemical class 0.000 claims description 2
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- 239000012188 paraffin wax Substances 0.000 claims description 2
- 229930195734 saturated hydrocarbon Natural products 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
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- 238000001816 cooling Methods 0.000 abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract description 6
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- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种环保型高流动高热稳定性改性聚氯乙烯母粒的制备方法。它包括如下步骤：1)将100重量份聚氯乙烯、100-2000重量份镧锡复合稳定剂加入高速混合机中，混合至50-80℃，出料加入冷混机中混合并冷却，温度降至40℃后，加入100-2000重量份丙烯酸酯类加工助剂、100-2000重量份内润滑剂、50-500重量份外润滑剂、100-5000重量份纳米刚性粒子，充分混合，得到聚氯乙烯复合物；2)将聚氯乙烯复合物加入反应釜中，加热，使聚氯乙烯复合物熔融，然后搅拌使之混合均匀，冷却、切粒、干燥。得到的改性聚氯乙烯母粒可方便地与普通聚氯乙烯进行共混造粒，最终得到的改性聚氯乙烯具有良好的加工流动性、热稳定性和良好的力学性能。The invention discloses a preparation method of an environment-friendly high-fluidity high-heat-stability modified polyvinyl chloride masterbatch. It includes the following steps: 1) adding 100 parts by weight of polyvinyl chloride and 100-2000 parts by weight of lanthanum-tin composite stabilizer into a high-speed mixer, mixing to 50-80°C, feeding the material into a cold mixer for mixing and cooling, and the temperature After cooling down to 40°C, add 100-2000 parts by weight of acrylate processing aid, 100-2000 parts by weight of internal lubricant, 50-500 parts by weight of external lubricant, and 100-5000 parts by weight of nano rigid particles, and mix thoroughly to obtain Polyvinyl chloride compound; 2) Add the polyvinyl chloride compound into the reaction kettle, heat to melt the polyvinyl chloride compound, then stir to make it evenly mixed, cool, cut into pellets, and dry. The obtained modified polyvinyl chloride masterbatch can be conveniently blended and granulated with ordinary polyvinyl chloride, and the finally obtained modified polyvinyl chloride has good processing fluidity, thermal stability and good mechanical properties.
Description
技术领域 technical field
本发明涉及一种环保型高流动性高热稳定性改性聚氯乙烯母粒的制备方法。The invention relates to a method for preparing an environment-friendly modified polyvinyl chloride masterbatch with high fluidity and high thermal stability.
背景技术 Background technique
聚氯乙烯是常用的通用塑料之一，具有阻燃、耐化学药品性高、机械强度及电绝缘性良好、价格低、应用领域广等优点，广泛的应用于管材、棒材、薄膜、建筑材料等方面，其产量居世界树脂产量的第二位。但是，聚氯乙烯尤其是硬质聚氯乙烯具有流动性差、热稳定性差、耐热性差、韧性差等缺点，限制了其使用。Polyvinyl chloride is one of the commonly used general-purpose plastics. It has the advantages of flame retardancy, high chemical resistance, good mechanical strength and electrical insulation, low price, and wide application fields. It is widely used in pipes, rods, films, constructions, etc. In terms of materials, etc., its output ranks second in the world's resin output. However, polyvinyl chloride, especially rigid polyvinyl chloride, has disadvantages such as poor fluidity, poor thermal stability, poor heat resistance, and poor toughness, which limit its use.
聚氯乙烯的改性途径主要包括化学改性和物理改性。化学改性就是通过共聚、接枝反应等方法对聚氯乙烯进行改性。化学改性对聚氯乙烯改性效果明显，但一般对技术控制要求较高，步骤较复杂。改性聚氯乙烯的第二条途径是物理改性，即通过添加各种助剂或进行共混来改善其性能。该方法简单易行，是被广泛采用的改性方法。The modification methods of PVC mainly include chemical modification and physical modification. Chemical modification is to modify polyvinyl chloride by copolymerization, grafting reaction and other methods. Chemical modification has an obvious effect on PVC modification, but generally requires higher technical control and more complicated steps. The second way to modify PVC is physical modification, that is, to improve its performance by adding various additives or blending. This method is simple and easy to implement, and is a widely used modification method.
1990年1月10日公开的中国专利CN1038660A公开了“填充型聚氯乙烯流动改性剂”，该专利在纯PVC中加入经四层包覆的填充材料颗粒，改善了硬质聚氯乙烯的加工性能。2006年7月5日公开的中国专利CN1796426A公开了“高流动聚氯乙烯专用树脂的制作方法”，改聚氯乙烯专用树脂将水、氯乙烯、水溶性分散剂、油溶性引发剂以及pH调节剂和链转移剂均匀混合并反应后，加入终止剂，分离、干燥得到高流动聚氯乙烯专用树脂，该专用树脂在注塑成型管件时流动性很好，能够使物料快速充满模具，且制品表面质量好。2009年10月7日公开的中国专利CN100547027C公开了“PVC用超大粒径高流动型丙烯酸酯类抗冲改性剂”，该改性剂为核壳结构共聚物，核层由丙烯酸丁酯与交联剂、弱酸性扩径剂进行乳液聚合反应而成，壳层首先是由甲基丙烯酸甲酯和苯乙烯在核层上继续乳液聚合，然后甲基丙烯酸甲酯单独包覆形成第二壳层，聚合完成后乳液中添加丙烯酸酯类抗冲改性剂隔离剂。该专利解决了抗冲ACR与PVC的相容性问题，使抗冲ACR快速均匀分散于PVC粒子中，可有效的增韧PVC制品。2009年9月16日公开的中国专利CN101531793A公开了“耐热聚氯乙烯合金材料及其制备方法”，该合金由聚氯乙烯基体、耐热改性剂、热稳定剂、润滑剂、填料、抗冲改性剂和加工助剂组成，该合金改善了聚氯乙烯与耐热树脂的相容性，解决了聚氯乙烯耐热性能的提高与强度和韧性的矛盾，制备了高耐热、高强度和高韧性的聚氯乙烯工程塑料。1996年10月30日公开的中国专利CN1134436公开了“改进聚氯乙烯耐热性的方法”，制得了以聚氯乙烯为基础的热塑性组合物，其耐热性高，同时具有较好的机械性能，特别是抗冲击性能高、与耐老化性能好。2005年8月10日公开的中国专利CN1651505A公开了一种耐热抑烟聚氯乙烯组合物及其制备方法，该组合物采用多元复合技术改善聚氯乙烯耐热和韧性不足的缺陷，具有耐热、阻燃、抑烟、耐候等多重优异性能。现有的研究可见，采用化学方法和物理方法均可以有效的改善聚氯乙烯的加工流动性和力学性能。其中化学改性效果明显，但往往制备工艺的条件控制比较苛刻，技术要求较高；物理方法简便易行，但多种改性剂的加入，往往会出现与体系相容性较差而导致力学性能下降的问题。The Chinese patent CN1038660A disclosed on January 10, 1990 discloses a "filled polyvinyl chloride flow modifier". Processing performance. The Chinese patent CN1796426A disclosed on July 5, 2006 discloses "the preparation method of high-flow polyvinyl chloride special resin", and the polyvinyl chloride special resin is changed to water, vinyl chloride, water-soluble dispersant, oil-soluble initiator and pH adjustment After the chain transfer agent and chain transfer agent are evenly mixed and reacted, the terminator is added, separated and dried to obtain a high-flow polyvinyl chloride special resin. Good quality. The Chinese patent CN100547027C published on October 7, 2009 discloses "ultra-large particle size and high flow type acrylate impact modifier for PVC". The modifier is a core-shell structure copolymer, and the core layer is composed of butyl acrylate and The cross-linking agent and weakly acidic diameter expander are formed by emulsion polymerization. The shell layer is firstly made of methyl methacrylate and styrene on the core layer to continue emulsion polymerization, and then methyl methacrylate is separately coated to form the second shell. After the polymerization is completed, an acrylate impact modifier release agent is added to the emulsion. This patent solves the compatibility problem between impact-resistant ACR and PVC, and makes impact-resistant ACR quickly and evenly dispersed in PVC particles, which can effectively toughen PVC products. The Chinese patent CN101531793A published on September 16, 2009 discloses "heat-resistant polyvinyl chloride alloy material and its preparation method". The alloy is composed of polyvinyl chloride matrix, heat-resistant modifier, heat stabilizer, lubricant, filler, Composed of impact modifier and processing aid, the alloy improves the compatibility between polyvinyl chloride and heat-resistant resin, solves the contradiction between the improvement of heat resistance of polyvinyl chloride and the strength and toughness, and prepares high heat-resistant, High-strength and high-toughness polyvinyl chloride engineering plastics. Chinese patent CN1134436 published on October 30, 1996 discloses a "method for improving the heat resistance of polyvinyl chloride", and a thermoplastic composition based on polyvinyl chloride has been obtained, which has high heat resistance and good mechanical properties. Performance, especially high impact resistance, and good aging resistance. The Chinese patent CN1651505A published on August 10, 2005 discloses a heat-resistant and smoke-suppressing polyvinyl chloride composition and its preparation method. Heat, flame retardant, smoke suppression, weather resistance and other excellent properties. Existing studies show that both chemical and physical methods can effectively improve the processing fluidity and mechanical properties of polyvinyl chloride. Among them, the chemical modification effect is obvious, but the condition control of the preparation process is often harsh and the technical requirements are high; the physical method is simple and easy, but the addition of various modifiers often leads to poor compatibility with the system and leads to mechanical problems. performance degradation issues.
发明内容 Contents of the invention
本发明的目的是克服现有技术的不足，提供一种环保型高流动性高热稳定性改性聚氯乙烯母粒的制备方法。采用力化学方法与物理共混法相结合制备环保型高流动性高热稳定性改性聚氯乙烯母粒，该改性聚氯乙烯母粒应用于硬质聚氯乙烯中可有效的提高其加工流动性和热稳定性。The purpose of the present invention is to overcome the deficiencies of the prior art and provide an environment-friendly preparation method of modified polyvinyl chloride masterbatch with high fluidity and high thermal stability. The combination of mechanochemical method and physical blending method is used to prepare environmentally friendly high fluidity and high thermal stability modified polyvinyl chloride masterbatch. The modified polyvinyl chloride masterbatch can effectively improve its processing flow when applied to rigid polyvinyl chloride. and thermal stability.
环保型高流动高热稳定性改性聚氯乙烯母粒的制备方法包括如下步骤：The preparation method of environment-friendly high flow and high thermal stability modified polyvinyl chloride masterbatch comprises the following steps:
1)将100重量份聚氯乙烯、100-2000重量份镧锡复合稳定剂加入高速混合机中，混合至50-80℃，出料加入冷混机中混合并冷却，温度降至40℃后，加入100-2000重量份丙烯酸酯类加工助剂、100-2000重量份内润滑剂、50-500重量份外润滑剂、100-5000重量份纳米刚性粒子，充分混合，得到聚氯乙烯复合物；1) Add 100 parts by weight of polyvinyl chloride and 100-2000 parts by weight of lanthanum-tin composite stabilizer into a high-speed mixer, mix to 50-80°C, discharge the material into a cold mixer, mix and cool, and the temperature drops to 40°C , adding 100-2000 parts by weight of acrylic ester processing aids, 100-2000 parts by weight of internal lubricants, 50-500 parts by weight of external lubricants, and 100-5000 parts by weight of nano rigid particles, fully mixing to obtain polyvinyl chloride composites ;
2)将聚氯乙烯复合物加入反应釜中，加热至140-200℃，使聚氯乙烯复合物熔融，然后搅拌5-60分钟使之混合均匀，冷却、切粒、干燥得到环保型高流动性高热稳定性改性聚氯乙烯母粒。2) Add the polyvinyl chloride compound into the reaction kettle, heat it to 140-200°C to melt the polyvinyl chloride compound, then stir for 5-60 minutes to make it evenly mixed, cool, cut into pellets, and dry to obtain an environmentally friendly high-fluidity High thermal stability modified polyvinyl chloride masterbatch.
所述聚氯乙烯的聚合度为300-2500。所述的镧锡复合稳定剂为硬脂酸镧和甲基硫醇有机锡的混合物，硬脂酸镧和甲基硫醇有机锡的重量比为8∶2-4∶6。所述的内润滑剂选自于饱和烃类润滑剂、脂肪酸类润滑剂或金属皂类润滑剂。所述外润滑剂为氧化聚乙烯蜡或石蜡。所述纳米刚性粒子为硬脂酸处理过的纳米碳酸钙或硬脂酸处理过的纳米二氧化硅，粒径30-200纳米。The degree of polymerization of the polyvinyl chloride is 300-2500. The lanthanum-tin composite stabilizer is a mixture of lanthanum stearate and organotin methyl mercaptide, and the weight ratio of lanthanum stearate and organotin methyl mercaptide is 8:2-4:6. The internal lubricant is selected from saturated hydrocarbon lubricants, fatty acid lubricants or metal soap lubricants. The external lubricant is oxidized polyethylene wax or paraffin wax. The nano rigid particles are stearic acid-treated nano-calcium carbonate or stearic-acid-treated nano-silicon dioxide, with a particle diameter of 30-200 nanometers.
本发明与现有技术相比，具有的有益效果是：Compared with the prior art, the present invention has the beneficial effects of:
1)通过新的加工工艺对聚氯乙烯与助剂进行力化学处理并制备改性母粒，增强了纳米刚性粒子在聚氯乙烯复合物中的分散，改善了聚氯乙烯与助剂的相容性；1) Through the new processing technology, the mechanochemical treatment of polyvinyl chloride and additives is carried out and the modified masterbatch is prepared, which enhances the dispersion of nano rigid particles in the polyvinyl chloride compound and improves the phase of polyvinyl chloride and additives. capacity;
2)采用镧锡复合稳定剂，热稳定效果明显，环保无毒，且硬脂酸镧可增加体系的流动性；2) Using lanthanum-tin composite stabilizer, the thermal stability effect is obvious, environmentally friendly and non-toxic, and lanthanum stearate can increase the fluidity of the system;
3)该母粒不含增塑剂，通过硬脂酸类润滑剂用量来有效的调节加工流动性，克服了以往增塑剂添加物易迁移的缺点；3) The masterbatch does not contain plasticizers, and the processing fluidity can be effectively adjusted by the amount of stearic acid lubricant, which overcomes the shortcomings of easy migration of plasticizer additives in the past;
4)提供了一种通过母粒两步法来制备高流动高热稳定性硬质聚氯乙烯的方法，减少了聚氯乙烯制品的制备工序。4) It provides a method for preparing high-fluidity and high-thermal-stability rigid polyvinyl chloride through a masterbatch two-step method, which reduces the preparation process of polyvinyl chloride products.
具体实施方式 Detailed ways
以下结合实施例进一步说明本发明。Below in conjunction with embodiment further illustrate the present invention.
实施例1Example 1
将100重量份聚氯乙烯、100重量份镧锡复合稳定剂加入高速混合机中，混合至50℃，出料加入冷混机中混合并冷却。待物料温度降至40℃后，加入100重量份丙烯酸酯类加工助剂、100重量份内润滑剂、50重量份外润滑剂、100重量份纳米刚性粒子，充分混合，得到聚氯乙烯复合物。将聚氯乙烯复合物加入反应釜中，加热至140℃，使聚氯乙烯复合物熔融，然后搅拌5分钟使之混合均匀，冷却、切粒、干燥得到环保型高流动性高热稳定性改性聚氯乙烯母粒。Add 100 parts by weight of polyvinyl chloride and 100 parts by weight of lanthanum-tin composite stabilizer into a high-speed mixer, mix to 50°C, and discharge the material into a cold mixer for mixing and cooling. After the temperature of the material drops to 40°C, add 100 parts by weight of acrylic ester processing aids, 100 parts by weight of internal lubricants, 50 parts by weight of external lubricants, and 100 parts by weight of nano rigid particles, and mix thoroughly to obtain a polyvinyl chloride compound . Add the polyvinyl chloride compound into the reaction kettle, heat to 140°C to melt the polyvinyl chloride compound, then stir for 5 minutes to make it evenly mixed, cool, cut into pellets, and dry to obtain an environmentally friendly high-fluidity and high-thermal-stability modification PVC masterbatch.
实施例2Example 2
将100重量份聚氯乙烯、2000重量份镧锡复合稳定剂加入高速混合机中，混合至80℃，出料加入冷混机中混合并冷却。待物料温度降至40℃后，加入2000重量份丙烯酸酯类加工助剂、2000重量份内润滑剂、500重量份外润滑剂、5000重量份纳米刚性粒子，充分混合，得到聚氯乙烯复合物。将聚氯乙烯复合物加入反应釜中，加热至200℃，使聚氯乙烯复合物熔融，然后搅拌60分钟使之混合均匀，冷却、切粒、干燥得到环保型高流动性高热稳定性改性聚氯乙烯母粒。Add 100 parts by weight of polyvinyl chloride and 2000 parts by weight of lanthanum-tin composite stabilizer into a high-speed mixer, mix to 80° C., and discharge the material into a cold mixer for mixing and cooling. After the material temperature drops to 40°C, add 2000 parts by weight of acrylate processing aids, 2000 parts by weight of internal lubricants, 500 parts by weight of external lubricants, and 5000 parts by weight of nano rigid particles, and fully mix to obtain a polyvinyl chloride compound . Add the polyvinyl chloride compound into the reaction kettle, heat to 200°C to melt the polyvinyl chloride compound, then stir for 60 minutes to make it evenly mixed, cool, cut into pellets, and dry to obtain an environmentally friendly high-fluidity and high-thermal-stability modification PVC masterbatch.
实施例3Example 3
将100重量份聚氯乙烯、1000重量份镧锡复合稳定剂加入高速混合机中，混合至60℃，出料加入冷混机中混合并冷却。待物料温度降至40℃后，加入1000重量份丙烯酸酯类加工助剂、1000重量份内润滑剂、300重量份外润滑剂、3000重量份纳米刚性粒子，充分混合，得到聚氯乙烯复合物。将聚氯乙烯复合物加入反应釜中，加热至170℃，使聚氯乙烯复合物熔融，然后搅拌30分钟使之混合均匀，冷却、切粒、干燥得到环保型高流动性高热稳定性改性聚氯乙烯母粒。Add 100 parts by weight of polyvinyl chloride and 1000 parts by weight of lanthanum-tin composite stabilizer into a high-speed mixer, mix to 60°C, and discharge the material into a cold mixer for mixing and cooling. After the material temperature drops to 40°C, add 1000 parts by weight of acrylate processing aids, 1000 parts by weight of internal lubricants, 300 parts by weight of external lubricants, and 3000 parts by weight of nano rigid particles, and mix thoroughly to obtain a polyvinyl chloride compound . Add the polyvinyl chloride compound into the reaction kettle, heat to 170°C to melt the polyvinyl chloride compound, then stir for 30 minutes to make it evenly mixed, cool, cut into pellets, and dry to obtain an environmentally friendly high-fluidity and high-thermal-stability modification PVC masterbatch.
实施例4Example 4
将100重量份聚氯乙烯、500重量份镧锡复合稳定剂加入高速混合机中，混合至70℃，出料加入冷混机中混合并冷却。待物料温度降至40℃后，加入500重量份丙烯酸酯类加工助剂、500重量份内润滑剂、200重量份外润滑剂、2000重量份纳米刚性粒子，充分混合，得到聚氯乙烯复合物。将聚氯乙烯复合物加入反应釜中，加热至160℃，使聚氯乙烯复合物熔融，然后搅拌20分钟使之混合均匀，冷却、切粒、干燥得到环保型高流动性高热稳定性改性聚氯乙烯母粒。Add 100 parts by weight of polyvinyl chloride and 500 parts by weight of lanthanum-tin composite stabilizer into a high-speed mixer, mix to 70°C, and discharge the material into a cold mixer for mixing and cooling. After the temperature of the material drops to 40°C, add 500 parts by weight of acrylic ester processing aids, 500 parts by weight of internal lubricants, 200 parts by weight of external lubricants, and 2000 parts by weight of nano rigid particles, and fully mix to obtain a polyvinyl chloride compound . Add the polyvinyl chloride compound into the reaction kettle, heat to 160°C to melt the polyvinyl chloride compound, then stir for 20 minutes to mix it evenly, cool, cut into pellets, and dry to obtain an environmentally friendly high-fluidity and high-thermal-stability modification PVC masterbatch.
实施例5Example 5
将100重量份聚氯乙烯、1500重量份镧锡复合稳定剂加入高速混合机中，混合至70℃，出料加入冷混机中混合并冷却。待物料温度降至40℃后，加入1500重量份丙烯酸酯类加工助剂、1500重量份内润滑剂、400重量份外润滑剂、4000重量份纳米刚性粒子，充分混合，得到聚氯乙烯复合物。将聚氯乙烯复合物加入反应釜中，加热至190℃，使聚氯乙烯复合物熔融，然后搅拌50分钟使之混合均匀，冷却、切粒、干燥得到环保型高流动性高热稳定性改性聚氯乙烯母粒。Add 100 parts by weight of polyvinyl chloride and 1500 parts by weight of lanthanum-tin composite stabilizer into a high-speed mixer, mix to 70°C, and discharge the material into a cold mixer for mixing and cooling. After the temperature of the material drops to 40°C, add 1500 parts by weight of acrylate processing aids, 1500 parts by weight of internal lubricants, 400 parts by weight of external lubricants, and 4000 parts by weight of nano rigid particles, and fully mix to obtain a polyvinyl chloride compound . Add the polyvinyl chloride compound into the reaction kettle, heat to 190°C to melt the polyvinyl chloride compound, then stir for 50 minutes to mix it evenly, cool, cut into pellets, and dry to obtain an environmentally friendly high-fluidity and high-thermal-stability modification PVC masterbatch.
将各实施例制得的母粒与普通聚氯乙烯按重量比10/100在锥形双螺杆挤出机和注塑机中经挤出、注塑成型，最终得到的改性硬质聚氯乙烯产品的性能测试数据见表1。The masterbatch prepared in each embodiment and ordinary polyvinyl chloride are extruded and injection-molded in a conical twin-screw extruder and an injection molding machine in a weight ratio of 10/100, and the finally obtained modified rigid polyvinyl chloride product The performance test data are shown in Table 1.
表1Table 1
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| 李国立等.稀土复合热稳定剂对聚氯乙烯性能影响研究.《现代塑料加工应用》.2004,第16卷(第2期),15-18. * |
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