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A heat-resistant and impact-resistant polyvinyl chloride-poly-1-butene compound and its preparation method

A polyvinyl chloride and compound technology, which is applied in the field of polyvinyl chloride compound preparation, can solve the problems of low thermal deformation temperature, poor weather resistance, poor thermal stability, etc., and achieve comprehensive performance improvement, good heat resistance, and resistance to High impact performance

Active Publication Date: 2016-08-31
SHAANXI COAL & CHEM TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally, polyvinyl chloride materials have the following deficiencies during processing: high brittleness, poor thermal stability, and low heat distortion temperature (Vicat softening point is about 85°C)
ABS can improve the heat resistance of PVC resin without compromising the properties of PVC resin, but the ABS heat-resistant modifiers all contain acrylonitrile monomers, which are very toxic and have certain dangers in the process of production and use; in addition, Because ABS contains butadiene double bonds, the weather resistance of the product becomes poor, and it is easy to turn yellow during use.

Method used

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  • A heat-resistant and impact-resistant polyvinyl chloride-poly-1-butene compound and its preparation method

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preparation example Construction

[0031] The preparation method of polyvinyl chloride-poly-1-butene compound of the present invention comprises the following steps:

[0032] 1) In parts by weight, add 70 to 90 parts of polyvinyl chloride and 1 to 3 parts of rare earth-epoxy composite stabilizer into a high-speed mixer with a rotation speed of 800 to 1000 rpm, and mix until the material temperature is 50 to 60 ℃, then add 1-5 parts of compatibilizer and 1-10 parts of internal lubricant in turn, mix to 70-80 ℃, add 0.5-2 parts of external lubricant, mix to 90-100 ℃, add 10-30 parts of poly 1-butene, 5-10 parts of rigid nanoparticles, mixed to 110-120 ° C, discharged and cooled to obtain a polyvinyl chloride-poly-1-butene mixture;

[0033] 2) Add the polyvinyl chloride-poly-1-butene mixture into the conical twin-screw extruder. Under the conditions of 130-170°C and screw speed of 4-30 rpm, it is melt-extruded and pelletized to obtain a rigid polyvinyl chloride-poly-1-butene compound that is environmentally frien...

Embodiment 1

[0036] Add 70 parts by weight of polyvinyl chloride with a degree of polymerization of 1300, 1 part by weight of lanthanum stearate and a composite stabilizer with a weight ratio of 7:3 to epoxy soybean oil into a high-speed mixer, mix to 50 ° C, add a compatibilizer 2 parts by weight of chlorinated polyethylene (CPE) and 1 part by weight of calcium stearate were mixed to 70°C, 0.5 parts by weight of microcrystalline paraffin was added and mixed to 90°C, and 30 parts by weight of Mitsui PB0100 poly-1-butene was added (the isotactic structure content is 96%), the nano-calcium carbonate that 5 weight parts of silane coupling agents are processed, mix to 110 ℃, discharge cooling, obtain polyvinyl chloride-poly-1-butene mixture; The poly-1-butene mixture is fed into the conical twin-screw extruder, and melted at the temperature of the first zone of 140°C, the temperature of the second zone of 148°C, the temperature of the third zone of 152°C, the temperature of the fourth zone of 1...

Embodiment 2

[0038] Add 80 parts by weight of polyvinyl chloride with a degree of polymerization of 1500, 1 part by weight of lanthanum stearate and a composite stabilizer with a weight ratio of 7:3 to epoxy soybean oil into a high-speed mixer, mix to 50 ° C, add a compatibilizer 2 parts by weight of chlorinated polyethylene (CPE) and 1 part by weight of calcium stearate were mixed to 70°C, 1 part by weight of microcrystalline paraffin was added and mixed to 90°C, and 20 parts by weight of poly-1-butene of Mitsui PB0100 was added (the isotactic structure content is 96%), the nano-calcium carbonate that 5 weight parts of silane coupling agents are processed, mix to 110 ℃, discharge cooling, obtain polyvinyl chloride-poly-1-butene mixture; The poly-1-butene mixture is added to the conical twin-screw extruder, and melted under the conditions of the first zone temperature of 150°C, the second zone temperature of 156°C, the third zone temperature of 162°C, the fourth zone temperature of 158°C, a...

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Abstract

The invention relates to a heat-resistant and impact-resistant polyvinyl chloride and poly-1-butene compound and a preparation method thereof. The heat-resistant and impact-resistant polyvinyl chloride and poly-1-butene compound comprises the following components in parts by weight: 70-90 parts of polyvinyl chloride, 10-30 parts of poly-1-butene, 1-5 parts of a compatibilizer, 5-10 parts of rigid nanometer particles, 1-3 parts of a rare earth-epoxy compound stabilizer, 1-10 parts of an inner lubricant and 0.5-2 parts of an outer lubricant. The materials are sequentially and gradually added into a high-speed mixer and fully and uniformly mixed, and then melted and extruded. The heat resistance and the impact resistance of the compound are effectively improved, and the poly-1-butene is adopted to improve the tenacity and the heat resistance of the polyvinyl chloride. The synergy of the poly-1-butene, the compatibilizer and the rigid nanometer particle is adopted to improve the tenacity and the heat resistance of the polyvinyl chloride. The impact resistance of the compound is higher than that of the existing product on the market. The heat resistance is great, the vicat softening point is effectively improved by about 10 DEG C, moreover, the comprehensive performance is improved. All of the raw materials are nontoxic and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride (PVC) compound preparation, in particular to a heat-resistant and impact-resistant polyvinyl chloride-poly1-butene compound and a preparation method thereof. Background technique [0002] Generally, polyvinyl chloride materials have the following deficiencies during processing: high brittleness, poor thermal stability, and low heat distortion temperature (Vicat softening point is about 85°C). These deficiencies limit the scope of use of polyvinyl chloride. In the blending modification of polyvinyl chloride, the commonly used modified materials are inorganic powder materials or heat-resistant ABS (acrylonitrile-butadiene-styrene copolymer). In order to meet the requirements of use, generally the addition of inorganic powder materials is relatively large. Although it can improve the rigidity and heat resistance of PVC, it also reduces the toughness and processing flow properties of the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/20C08L23/28C08K13/06C08K9/06C08K3/26C08K3/36C08K3/34C08K5/098C08K5/1515C08K5/103C08L23/30C08L91/06B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08K2201/011C08K2201/014C08L27/06C08L2201/08C08L2205/035C08L23/22C08L23/286C08L91/06C08K13/06C08K9/06C08K2003/265C08K5/098C08K5/1515C08K3/36C08L27/24C08K3/34
Inventor 李欣郑化安付东升雷瑞马建华袁聪孙欣新
Owner SHAANXI COAL & CHEM TECH INST
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