WO2018129777A1 - 一种高抗冲聚氯乙烯及其加工方法 - Google Patents
一种高抗冲聚氯乙烯及其加工方法 Download PDFInfo
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
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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
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C08L2205/00—Polymer mixtures characterised by other features
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/07—Long chain branching
Definitions
- the invention belongs to the technical field of plastic modification, and particularly relates to a high impact polyvinyl chloride and a processing method thereof.
- Polyvinyl chloride is mainly used as building materials and plastic pipes.
- PVC plastic profiles are widely used in indoor and outdoor doors and windows and decoration industry of buildings. They have the characteristics of heat preservation, sealing, energy saving, sound insulation and moderate cost. The products have developed rapidly since their inception.
- PVC pipe has the advantages of light weight, corrosion resistance, high strength, weather resistance and flame retardancy.
- PVC itself also has some shortcomings, such as low temperature brittleness, low impact strength, and poor resistance to cracking, which brings more problems and inconvenience to installation and use. Therefore, the impact properties of PVC must be improved.
- impact modifiers for PVC are chlorinated polyethylene, polyacrylates, methyl methacrylate-butadiene-styrene ternary graft copolymers, acrylonitrile-butadiene-styrene copolymers. , ethylene-vinyl acetate copolymer, ethylene propylene rubber and the like. These impact modifiers are relatively expensive to manufacture, resulting in higher costs for processing PVC to process impacted polyvinyl chloride.
- the object of the present invention is to overcome the deficiencies of the prior art and to provide a high impact polyvinyl chloride and a processing method thereof.
- the solution of the present invention is to provide a high-impact polyvinyl chloride, wherein the high-impact polyvinyl chloride raw material component comprises: 100 parts of PVC resin, and the height is 100 parts by weight. 5 to 25 parts of branched polyethylene, 2 to 15 parts of compatibilizer, 0.5 to 8 parts of stabilizer, and 0.5 to 5 parts of lubricant.
- the PVC resin is a PVC resin having a polymerization degree of 1400 to 1600.
- the highly branched polyethylene has a branching degree of 70 to 130 branches/1000 carbons, a weight average molecular weight of 66,000 to 436,000, and a Mooney viscosity of ML (1+4) 125 ° C. It is 6 to 93.
- a further technical solution is that when the degree of branching of the highly branched polyethylene is 70 to 130 branches/1000 carbons, the methyl content is 46.8 to 66.5 mol%, and the ethyl content is 7.2 to 18.3 mol%.
- the propyl content is 4.6 to 8.3 mol%, the butyl content is 3.2 to 6.7 mol%, the pentyl content is 3.2 to 5.2 mol%, and the carbon number ⁇ 6 branching content is 12.1 to 15.3 mol%.
- the compatibilizer comprises at least one of chlorinated polyethylene, methyl methacrylate grafted ethylene propylene diene monomer, and maleic anhydride grafted ethylene propylene diene monomer.
- the stabilizer comprises tribasic lead sulfate, dibasic lead sulfite, calcium stearate, barium stearate, dibutyl tin dilaurate, di-n-octyl dilaurate, maleic acid. At least one of dibutyltin, bis(monobutyl maleate) dibutyltin, and di-n-octyltin maleate.
- the lubricant comprises at least one of stearic acid, paraffin wax, microcrystalline wax, oxidized polyethylene wax, and polyethylene wax.
- Highly branched polyethylene is an ethylene homopolymer. It is a high performance polyolefin product with rubber elasticity at room temperature. It has the characteristics of small density, large bending, high temperature resistance, easy processing. Ethylene is the cheapest and most abundant olefin monomer.
- the highly branched polyethylene prepared by ethylene homopolymerization has simple production process and low production cost. It replaces chlorinated polyethylene, polyacrylate, and A with highly branched polyethylene.
- Methyl acrylate-butadiene-styrene ternary graft copolymer, acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer, ethylene propylene rubber and other impact modifiers can be greatly Reduce the production cost of high impact polyvinyl chloride, suitable for large-scale industrial production.
- the highly branched polyethylene used has the characteristics of a branching degree of 70 to 130 branches/1000 carbons, a weight average molecular weight of 66,000 to 436,000, and a Mooney viscosity of ML (1+4) of 125 ° C of 6 to 93.
- the degree of branching is measured by nuclear magnetic resonance spectroscopy, and the molar percentages of various branches are measured by nuclear magnetic carbon spectroscopy.
- High-impact polyvinyl chloride 100 parts by weight, its raw material composition includes: 100 parts of PVC resin, 5 parts of highly branched polyethylene, 2 parts of chlorinated polyethylene, 1 part of dibutyl tin dilaurate, stearic acid 1 serving.
- the PVC resin is a PVC resin having a degree of polymerization of 1400; the highly branched polyethylene used is numbered PER-5.
- High-impact polyvinyl chloride based on 100 parts by weight, consisting of 100 parts of PVC resin, 10 parts of highly branched polyethylene, 5 parts of chlorinated polyethylene, 0.5 parts of di-n-octyltin dilaurate, and hard fat. 2 parts of acid.
- the PVC resin is a PVC resin having a polymerization degree of 1600; the highly branched polymer used The ethylene number is PER-4.
- High-impact polyvinyl chloride 100 parts by weight, its raw material composition includes: 100 parts of PVC resin, 15 parts of highly branched polyethylene, 7 parts of chlorinated polyethylene, 3 parts of lead tribasic lead sulfate, stearic acid 2 parts, 0.5 parts of paraffin.
- the PVC resin is a PVC resin having a polymerization degree of 1,500; the highly branched polyethylene used is numbered PER-3.
- High-impact polyvinyl chloride 100 parts by weight, its raw material composition includes: 100 parts of PVC resin, 20 parts of highly branched polyethylene, 10 parts of methyl methacrylate grafted ethylene propylene diene monomer, maleic acid 3 parts of dibutyltin and 2 parts of stearic acid.
- the PVC resin is a PVC resin having a degree of polymerization of 1,500; the highly branched polyethylene used is 5 parts of PER-2 and 15 parts of PER-5.
- High-impact polyvinyl chloride based on 100 parts by weight, consisting of 100 parts of PVC resin, 25 parts of highly branched polyethylene, 12 parts of maleic anhydride grafted ethylene propylene diene monomer, and lead trisulphate 3 parts, 3 parts of lead dibasic sulfite, 2 parts of barium stearate, and 5 parts of paraffin.
- the PVC resin is a PVC resin having a polymerization degree of 1,500; the highly branched polyethylene used is 10 parts of PER-1 and 15 parts of PER-6.
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Abstract
一种高抗冲聚氯乙烯及其加工方法,按重量份100份计,所述高抗冲聚氯乙烯的原料组份包括:PVC树脂100份,高度支化聚乙烯5~25份,相容剂2~15份,稳定剂0.5~8份,润滑剂0.5~5份,其中,PVC树脂为聚合度是1400~1600的PVC树脂,高度支化聚乙烯的支化度为70~130个支链/1000个碳,重均分子量为6.6万~43.6万、门尼粘度ML(1+4)125℃为6~93。其有益效果是,高抗冲聚氯乙烯以高度支化聚乙烯为抗冲击改性剂可以大幅度降低高抗冲聚氯乙烯的生产成本,适于大规模工业生产。
Description
本发明属于塑料改性技术领域,具体涉及一种高抗冲聚氯乙烯及其加工方法。
聚氯乙烯(PVC)主要用作建筑材料和塑料管道。PVC塑料异型材广泛应用于建筑物的室内外门窗及装饰行业,具有保温、密封、节能、隔音、成本适中等优良特性,产品自问世以来,得到迅速发展。PVC管材具有重量轻、耐腐蚀、强度高、耐侯性和阻燃性好等优点。但PVC本身也存在一些缺点,如低温脆性、冲击强度低、抗开裂性能差,给安装和使用带来较多问题和不便。因此,必须对PVC的冲击性能加以改进。
目前,PVC常用抗冲击改性剂有氯化聚乙烯、聚丙烯酸酯类、甲基丙烯酸甲酯-丁二烯-苯乙烯三元接枝共聚物、丙烯腈-丁二烯-苯乙烯共聚物、乙烯-醋酸乙烯酯共聚物、乙丙橡胶等。这些抗冲击改性剂的制造成本较高,导致用它们改性PVC来加工得到抗冲聚氯乙烯的成本较高。
发明内容
本发明的目的是克服现有技术的不足,提供一种高抗冲聚氯乙烯及其加工方法。
为了解决技术问题,本发明的解决方案是提供一种高抗冲聚氯乙烯,其中,按重量份100份计,所述高抗冲聚氯乙烯的原料组份包括:PVC树脂100份,高度支化聚乙烯5~25份,相容剂2~15份,稳定剂0.5~8份,润滑剂0.5~5份。
进一步的技术方案是,所述PVC树脂为聚合度是1400~1600的PVC树脂。
进一步的技术方案是,所述高度支化聚乙烯的支化度为70~130个支链/1000个碳,重均分子量为6.6万~43.6万、门尼粘度ML(1+4)125℃为6~93。
进一步的技术方案是,当所述高度支化聚乙烯的支化度70~130个支链/1000个碳时,其甲基含量为46.8~66.5mol%、乙基含量为7.2~18.3mol%、丙基含量为4.6~8.3mol%、丁基含量为3.2~6.7mol%、戊基含量为3.2~5.2mol%、碳数≥6支链含量为12.1~15.3mol%。
进一步的技术方案是,所述相容剂包含氯化聚乙烯、甲基丙烯酸甲酯接枝三元乙丙橡胶、马来酸酐接枝三元乙丙橡胶中的至少一种。
进一步的技术方案是,所述稳定剂包含三盐基硫酸铅、二盐基亚硫酸铅、硬脂酸钙、硬脂酸钡、二月桂酸二丁基锡、二月桂酸二正辛基锡、马来酸二丁基锡、双(马来酸单丁酯)二丁基锡、马来酸二正辛基锡中的至少一种。
进一步的技术方案是,所述润滑剂包含硬脂酸、石蜡、微晶蜡、氧化聚乙烯蜡、聚乙烯蜡中的至少一种。
与现有技术相比,本发明的有益效果是:
高度支化聚乙烯为乙烯均聚物,是一种高性能聚烯烃产品,在常温下呈橡胶弹性,具有密度小、弯曲大、低温抗冲击性能高、易加工等特点。乙烯是最便宜、来源最丰富的烯烃单体,通过乙烯均聚制备的高度支化聚乙烯生产工艺简单,生产成本低,用高度支化聚乙烯代替氯化聚乙烯、聚丙烯酸酯类、甲基丙烯酸甲酯-丁二烯-苯乙烯三元接枝共聚物、丙烯腈-丁二烯-苯乙烯共聚物、乙烯-醋酸乙烯酯共聚物、乙丙橡胶等抗冲击改性剂可以大幅度降低高抗冲聚氯乙烯的生产成本,适于大规模工业生产。
下面给出实施例以对本发明做进一步说明,但不是用来限制本发明的范围,该领域的技术熟练人员根据发明内容对本发明做出的一些非本质的改进和调整仍属于本发明的保护范围。
所用高度支化聚乙烯特征为:支化度为70~130个支链/1000个碳、重均分子量为6.6万~43.6万,门尼粘度ML(1+4)125℃为6~93。其中,支化度通过核磁氢谱测得,各种支链摩尔百分含量通过核磁碳谱测得。
具体如下表:
实施例1:
高抗冲聚氯乙烯,按重量份100份计,其原料组成包括:PVC树脂100份、高度支化聚乙烯5份、氯化聚乙烯2份、二月桂酸二丁基锡1份、硬脂酸1份。
其中,PVC树脂为聚合度是1400的PVC树脂;采用的高度支化聚乙烯编号为PER-5。
实施例2:
高抗冲聚氯乙烯,按重量份100份计,其原料组成包括:PVC树脂100份、高度支化聚乙烯10份、氯化聚乙烯5份、二月桂酸二正辛基锡0.5份、硬脂酸2份。
其中,PVC树脂为聚合度是1600的PVC树脂;采用的高度支化聚
乙烯编号为PER-4。
实施例3:
高抗冲聚氯乙烯,按重量份100份计,其原料组成包括:PVC树脂100份、高度支化聚乙烯15份、氯化聚乙烯7份、三盐基硫酸铅3份、硬脂酸钡2份、石蜡0.5份。
其中,PVC树脂为聚合度是1500的PVC树脂;采用的高度支化聚乙烯编号为PER-3。
实施例4:
高抗冲聚氯乙烯,按重量份100份计,其原料组成包括:PVC树脂100份、高度支化聚乙烯20份、甲基丙烯酸甲酯接枝三元乙丙橡胶10份、马来酸二丁基锡3份、硬脂酸2份。
其中,PVC树脂为聚合度是1500的PVC树脂;采用的高度支化聚乙烯为5份PER-2和15份PER-5。
实施例5:
高抗冲聚氯乙烯,按重量份100份计,其原料组成包括:PVC树脂100份、高度支化聚乙烯25份、马来酸酐接枝三元乙丙橡胶12份、三盐基硫酸铅3份、二盐基亚硫酸铅3份、硬脂酸钡2份、石蜡5份。
其中,PVC树脂为聚合度是1500的PVC树脂;采用的高度支化聚乙烯为10份PER-1和15份PER-6。
性能测试
将上述共混料挤出造粒后,所得粒子经注塑机注塑成型制成标准样条,最后按国家标准进行性能测试,其中,悬臂梁缺口冲击强度按照GB/T1843-2008、拉伸强度按照GB/T1040.2-2006、维卡软化温度按照GB/T8802-2001测试。测试结果如表1所示。
表1产品性能测试数据
Claims (7)
- 一种高抗冲聚氯乙烯,其特征在于,按重量份100份计,所述高抗冲聚氯乙烯的原料组份包括:PVC树脂100份,高度支化聚乙烯5~25份,相容剂2~15份,稳定剂0.5~8份,润滑剂0.5~5份。
- 根据权利要求1所述的高抗冲聚氯乙烯,其特征在于,所述PVC树脂为聚合度是1400~1600的PVC树脂。
- 根据权利要求1所述的高抗冲聚氯乙烯,其特征在于,所述高度支化聚乙烯的支化度为80~125个支链/1000个碳、玻璃化转变温度为-67~-57℃、重均分子量为9.2万~42万、门尼粘度ML(1+4)125℃为2.12~86.63。
- 根据权利要求3所述的高抗冲聚氯乙烯,其特征在于,当所述高度支化聚乙烯的支化度70~130个支链/1000个碳时,其甲基含量为46.8~66.5mol%、乙基含量为7.2~18.3mol%、丙基含量为4.6~8.3mol%、丁基含量为3.2~6.7mol%、戊基含量为3.2~5.2mol%、碳数≥6支链含量为12.1~15.3mol%。
- 根据权利要求1所述的高抗冲聚氯乙烯,其特征在于,所述相容剂包含氯化聚乙烯、甲基丙烯酸甲酯接枝三元乙丙橡胶、马来酸酐接枝三元乙丙橡胶中的至少一种。
- 根据权利要求1所述的高抗冲聚氯乙烯,其特征在于,所述稳定剂包含三盐基硫酸铅、二盐基亚硫酸铅、硬脂酸钙、硬脂酸钡、二月桂酸二丁基锡、二月桂酸二正辛基锡、马来酸二丁基锡、双(马来酸单丁酯)二丁基锡、马来酸二正辛基锡中的至少一种。
- 根据权利要求1所述的高抗冲聚氯乙烯,其特征在于,所述润滑剂包含硬脂酸、石蜡、微晶蜡、氧化聚乙烯蜡、聚乙烯蜡中的至少一种。
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CN111021079A (zh) * | 2019-12-17 | 2020-04-17 | 台州市斯佩雷尔植保机械有限公司 | 一种背负式喷雾器药袋用pvc皮革及其生产工艺 |
CN115746476A (zh) * | 2022-11-18 | 2023-03-07 | 天龙伟业线缆有限公司 | 一种环保型耐低温聚氯乙烯电缆管料 |
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