Low-cost environment-friendly injection-molding high heat-resistant high impact-resistant rigid polyvinyl chloride composite and preparation method thereof

A rigid polyvinyl chloride and injection molding technology, which is applied in the field of high heat-resistant and high-impact rigid polyvinyl chloride compounds and their preparation, can solve the problem that the processability and mechanical properties of the system decrease, the heat-resistant modifier increases the cost, Polyvinyl chloride has poor heat resistance and other problems, and achieves the effect of improving processing fluidity, enhancing dispersion and good heat resistance.

Inactive Publication Date: 2010-12-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, it also has some disadvantages, such as, however, polyvinyl chloride has poor heat resistance, poor toughness, poor thermal stability, and difficult processing.
The heat distortion temperature of ordinary PVC injection molding products is less than 55°C, the Vicat softening temperature is only about 75°C, and the notched impact strength at room temperature is less than 4KkJ / m 2 , which largely limits its application
However, the existing heat-resistant modification technology mostly adopts the method of blending a large amount of heat-resistant modifiers, and the addition of heat-resistant modifiers will increase the cost; at the same time, due to the poor compatibility of heat-resistant modifiers with the system , will lead to a decrease in the processability and mechanical properties of the system

Method used

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  • Low-cost environment-friendly injection-molding high heat-resistant high impact-resistant rigid polyvinyl chloride composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 30 parts by weight of nano-calcium carbonate treated with a coupling agent and 100 parts by weight of acrylonitrile-butadiene-styrene terpolymer of Chimei 766 into a high-speed mixer and mix, discharge and cool to obtain nano-calcium carbonate / propylene Nitrile-butadiene-styrene terpolymer compound; 100 parts by weight of polyvinyl chloride with a degree of polymerization of 1000, 10 parts by weight of polyvinyl chloride with a degree of polymerization of 2500, 2 parts by weight of lanthanum stearate and methyl Put the lanthanum-tin composite stabilizer with a weight ratio of mercaptan organotin of 6:4 into a high-speed mixer, mix to 60°C, add 3 parts by weight of acrylic resin processing aid, 1 part by weight of monoglyceride stearate, and mix to 80°C, add 0.5 parts by weight of oxidized polyethylene wax, mix to 90°C, add nano-calcium carbonate / acrylonitrile-butadiene-styrene terpolymer compound, mix to 120°C, discharge and cool to obtain polychloride Ethylene nano...

Embodiment 2

[0022] Add 5 parts by weight of nano-silica treated with a coupling agent and 100 parts by weight of acrylonitrile-butadiene-styrene terpolymer of Chimei 757 into a high-speed mixer and mix, discharge and cool to obtain nano-silica / acrylonitrile-butadiene-styrene terpolymer compound; 100 parts by weight of polyvinyl chloride with a degree of polymerization of 1300, 10 parts by weight of polyvinyl chloride with a degree of polymerization of 3000, 2 parts by weight of lanthanum stearate Add the lanthanum-tin composite stabilizer with a methylmercaptan organotin weight ratio of 6:4 into a high-speed mixer, mix to 60°C, add 3 parts by weight of acrylic resin processing aid, 1 part by weight of calcium stearate, Mix to 80°C, add 0.5 parts by weight of paraffin, mix to 100°C, add nano-silica / acrylonitrile-butadiene-styrene terpolymer compound, mix to 120°C, discharge and cool to obtain polyvinyl chloride Nanocomposite: Add the polyvinyl chloride nanocomposite to the conical twin-s...

Embodiment 3

[0024] Add 50 parts by weight of nano-calcium carbonate treated with a coupling agent and 80 parts by weight of methyl methacrylate-butadiene-styrene terpolymer with the brand name TP-802 into a high-speed mixer and mix, and cool the discharge to obtain nano Calcium carbonate / methyl methacrylate-butadiene-styrene terpolymer composite; 100 parts by weight of polyvinyl chloride with a degree of polymerization of 700, 10 parts by weight of polyvinyl chloride with a degree of polymerization of 3000, 2 parts by weight The lanthanum-tin composite stabilizer whose weight ratio of lanthanum stearate and methylmercaptan organotin is 6:4 is added into a high-speed mixer, mixed to 60°C, and 3 parts by weight of acrylic resin processing aid, 3 parts by weight of hard Fatty acid, mix to 80°C, add 0.5 parts by weight of paraffin, mix to 100°C, add nano-calcium carbonate / methyl methacrylate-butadiene-styrene terpolymer compound, mix to 120°C, discharge and cool , to obtain a polyvinyl chlori...

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Abstract

The invention discloses a low-cost environment-friendly injection-molding high heat-resistant high impact-resistant rigid polyvinyl chloride composite and a preparation method thereof. The composite is prepared from the following raw materials in part by weight: 100 parts of medium-low polymerization degree polyvinyl chloride, 10 to 100 parts of high polymerization degree polyvinyl chloride, 4 to 100 parts of impact-resistant modifier, 5 to 50 parts of nano rigid particle, 1 to 5 parts of lanthanum tin compound stabilizer, 1 to 3 parts of acrylate processing aid, 1 to 10 parts of internal lubricant and 0.3 to 2 parts of external lubricant. The low-cost environment-friendly injection-molding high heat-resistant high impact-resistant rigid polyvinyl chloride composite is prepared by the steps of: performing mechanochemistry treatment on the polyvinyl chloride and the aid in a high-speed mixer through new technology; and pelleting by using a cone-shaped double-screw extruder. The compatibility between the polyvinyl chloride and the aid is improved through the new technology, the problem that the conventional nano particles easily agglomerate and have poor compatibility between a heat-resistant modifier and a substrate so as to reduce the mechanical property is solved, and the product has the advantages of high heat resistance, high toughness and good comprehensive mechanical property.

Description

technical field [0001] The invention relates to a low-cost, environment-friendly, high-heat-resistant and high-impact rigid polyvinyl chloride compound capable of injection molding and a preparation method. Background technique [0002] Polyvinyl chloride is one of the commonly used general-purpose plastics. It has the advantages of low price, flame retardancy, high chemical resistance, good mechanical strength and electrical insulation, and wide source of raw materials. At the same time, it also has some disadvantages, such as, however, polyvinyl chloride has poor heat resistance, poor toughness, poor thermal stability, and difficult processing. The heat distortion temperature of ordinary PVC injection molding products is less than 55°C, the Vicat softening temperature is only about 75°C, and the notched impact strength at room temperature is less than 4KkJ / m 2 , which largely limits its application. [0003] Plastic composite materials are a new class of high-performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L55/02C08L51/04C08L23/28C08K13/02C08K3/26C08K3/36C08K5/098C08K5/58C08K5/103C08K5/09C08K13/06B29B7/28B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 都佩华陈韶辉宋义虎郑强
Owner ZHEJIANG UNIV
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