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Low-expansion coefficient polyvinyl chloride alloy material and manufacturing method thereof

A low expansion coefficient, polyvinyl chloride technology, applied in the field of low expansion coefficient polyvinyl chloride alloy materials and its preparation, can solve the problem of reducing the thermal expansion coefficient of PVC composite and/or blended materials, reducing mechanical properties, and degrading processing performance, etc. problems, to achieve the effect of high performance, improved dispersion and compatibility, and good aging resistance

Active Publication Date: 2009-09-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can also be seen from the existing research that the current research mainly focuses on polyimide and other engineering plastic systems, and there are few reports on reducing the thermal expansion coefficient of PVC composite and / or blended materials.
At the same time, the obvious difference in physical and chemical properties between fillers and polymers makes it difficult to disperse, process poorly, and reduce mechanical properties when they are compounded with polymers. They often cannot coordinate with high strength, high toughness and high The contradiction between mobility

Method used

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  • Low-expansion coefficient polyvinyl chloride alloy material and manufacturing method thereof
  • Low-expansion coefficient polyvinyl chloride alloy material and manufacturing method thereof
  • Low-expansion coefficient polyvinyl chloride alloy material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Put 100g of PVC resin, 1.5g of tribasic lead sulfate, 3.5g of calcium stearate and hindered phenol compound into mechanochemical reaction equipment, and react at about 20°C (15-30°C) for about 0.5h to obtain mechanochemical Modified processing aids.

[0038] Dilute 1.5g of titanate coupling agent with 5g of white oil, add it into 100g of calcium carbonate whisker (filler) and stir for about 0.5h to obtain organically modified calcium carbonate whisker filler.

[0039] 100g of PVC resin and 20g of the above-mentioned organically treated modified calcium carbonate whisker filler, 4g of composite lead salt (FZ-101), 0.5g of calcium stearate, and 2g of the above-mentioned modified processing aid were prepared in a high-speed mixer Mix in medium temperature, discharge at about 110°C, melt and blend on a twin-roller plastic mixer at a temperature of about 170°C, and release the sheet after 8 minutes to prepare a polyvinyl chloride alloy material with a low expansion coefficie...

Embodiment 2

[0043] Put 100g of PVC resin, 2.0g of composite lead salt (FZ-101), 5g of calcium stearate and phosphite compound into the mechanochemical reaction equipment, and react at about 15°C (15-30°C) for about 0.5h, Mechanochemically modified processing aids are obtained.

[0044] Dilute 1.5g of coupling agent (TC-201) with 10g of alcohol, add it into 100g of talc (filler) and stir for 0.5h to obtain organic treated talc filler.

[0045] Mix 100g of PVC resin with 20g of the organically treated talc filler prepared above, 4g of composite lead salt (FZ-101), 0.5g of stearic acid, and 1g of the modified processing aid prepared above in a high-speed mixer. The material is melted and blended on a twin-roller plastic mixer at a temperature of about 170°C, and the sheet is released after 8 minutes to prepare a polyvinyl chloride alloy material with a low expansion coefficient. In order to measure the performance of the material, the prepared low-expansion coefficient polyvinyl chloride al...

Embodiment 3

[0049] Put 100g of PVC resin, 2.5g of calcium zinc stabilizer (Bear brand 9700), 4.0g of lubricant (ZB-60) and antioxidant (1010) into the mechanochemical reaction equipment, at about 25°C (15~30 °C) for about 0.5 h to obtain a mechanochemically modified processing aid.

[0050] First bake the wood powder at 110°C for 3.5 hours, then add 50g of dry wood powder (filler) and alcohol solution containing 1.0g of coupling agent (PM-200) into the high-speed mixer and stir, activate for 10 minutes, then add 100g of PVC, 3.5 g of the processing aid prepared above, 4.5 g of calcium zinc stabilizer (Bear brand 9700), 1.4 g of stearic acid, and 16 g of CPE were treated in a mechanochemical reaction device for 2 hours to obtain PVC composite material powder. The powder is then melt-blended on a twin-roller plastic mixer at a temperature of about 170°C, and the sheet is released after 8 minutes to obtain a polyvinyl chloride alloy material with a low expansion coefficient. In order to mea...

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Abstract

The invention provides a low-expansion coefficient polyvinyl chloride alloy material and a manufacturing method thereof. The ingredients of raw materials of the alloy material comprise a polyvinyl chloride substrate, a heat-resistant modifier, a heat stabilizer, a lubricator, a filler and a processing agent, and the alloy material is manufactured by a melt blending technique. The processing agent and the filler in the ingredients of the raw materials of the invention are the processing agent that is subjected to modification by a new method and the filler that is subjected to organic treatment, and by means of a mechanochemical reaction, self-plastification, toughening and reinforcement of the PVC can be combined organically to improve compatibility and dispersity of the polyvinyl chloride, the filler and heat-resistant resin, thus settling the problem about the contraction between the improvement of heat expansion performance and heat resistance of the PVC, and processing performance, strength and toughness of the PVC; the polyvinyl chloride engineering plastic with low expansion coefficient, high heat resistance, high strength, high toughness, excellent aging resistance and outstanding processing performance is manufactured; the invention has extensive industrial market prospect and the manufacturing method thereof is simple in technology, convenient in operation and control, stable in quality and high in production efficiency.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a polyvinyl chloride alloy material with a low expansion coefficient and a preparation method thereof. Background technique [0002] With the rapid development of modern science and technology, new polymer materials have been widely used in aerospace, oil exploration, electrical and electronic, national defense and military industries. Composite materials formed of polymer materials and inorganic materials such as metals and ceramics have attracted more and more attention. However, compared with inorganic materials, the heat resistance of polymer materials is relatively poor, and the coefficient of thermal expansion (CTE) is also much larger. It is peeled off from the substrate, and it also causes cracks and warping in the coating of polymer materials, and cracks in molded plastics. When different materials are combined, the thermal stress caused ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/06C08K9/06C08K3/34C08K7/08
Inventor 郭少云陈光顺邓志伟苏琳熊雷
Owner SICHUAN UNIV
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