Preparation method for highly thermal stable CPVC blend composition

A technology of high thermal stability and blending materials, applied in the field of polymer materials, can solve the problems of difficult CPVC processing and high cost of thermal stabilizers

Inactive Publication Date: 2018-02-27
杭州电化新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of preparation method of the CPVC blend material of high thermal stability, solve the current CPVC processing d

Method used

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  • Preparation method for highly thermal stable CPVC blend composition
  • Preparation method for highly thermal stable CPVC blend composition
  • Preparation method for highly thermal stable CPVC blend composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 100 parts of CPVC to the first mixer at a low speed of 200r / min, then adjust the speed of the first mixer to a high speed of 1000r / min; when the temperature rises to 60℃, add 0.4 parts of hydrotalcite and 1.5 Parts of ethyl tin heat stabilizer; when the temperature rises to 82°C, add 6.2 parts of impact modifier; when the temperature rises to 90°C, add 0.8 parts of paraffin wax, 1.4 parts of PE wax, 1.4 parts of fillers, 1.1 parts of processing Additives and 0.3 parts antioxidant; when the temperature rises to 115°C, the mixing is over. The mixture in the first mixer is transferred to the second mixer, and the mixture is cooled to 40° C. to finish discharging to obtain a CPVC blend.

Embodiment 2

[0022] Add 100 parts of CPVC in the first mixer at low speed of 300r / min, then adjust the speed of the first mixer to high speed of 1300r / min; when the temperature rises to 65℃, add 0.6 parts of hydrotalcite and 1.5 Parts of ethyl tin heat stabilizer; when the temperature rises to 88 ℃, add 6 parts of impact modifier; when the temperature rises to 95 ℃, add 1 part of paraffin wax, 1.6 parts of PE wax, 1.8 parts of filler, 1 part of processing Additives and 0.4 parts antioxidant; when the temperature rises to 120°C, the mixing is over. The mixture in the first mixer is transferred to the second mixer, and the mixture is cooled to 50° C. to finish discharging to obtain a CPVC blend.

Embodiment 3

[0024] Add 100 parts of CPVC at 210r / min in the first mixer at low speed, then adjust the speed of the first mixer to 1100r / min at high speed; when the temperature rises to 61℃, add 0.8 parts of hydrotalcite and 1.5 Parts of ethyl tin heat stabilizer; when the temperature rises to 83 ℃, add 6.4 parts of impact modifier; when the temperature rises to 91 ℃, add 0.9 parts of paraffin wax, 1.5 parts of PE wax, 1.5 parts of fillers, 1.5 parts of processing Additives and 0.35 parts of antioxidants; when the temperature rises to 116°C, the mixing is complete. The mixture in the first mixer is transferred to the second mixer, and the mixture is cooled to 42° C. to finish discharging to obtain a CPVC blend.

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PUM

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Abstract

The invention provides a preparation method for a highly thermal stable CPVC blend composition. The preparation method comprises steps of heating and mixing materials and cooling, wherein in the heating and mixing step, hydrotalcite, a tin ethyl thermal stabilizer compound, CPVC and additives are heated and blended in a mixing machine. The thermal stability of CPVC is improved, less tin ethyl thermal stabilizer is used at the same time, and the problems that CPVC is difficult to process and the thermal stabilizer is high in cost are solved.

Description

Technical field [0001] The invention relates to a method for preparing a CPVC blend with high thermal stability, and belongs to the technical field of polymer materials. Background technique [0002] Chlorinated polyvinyl chloride resin (CPVC) is a product obtained after further chlorination and modification of polyvinyl chloride resin (PVC). The mass content of chlorine is usually 62% to 69%. It is in heat resistance and chemical resistance. Corrosion, mechanical strength, weather resistance and other aspects are significantly improved than PVC. In addition, the Vicat softening temperature of PVC blends is up to 80°C. The lower use temperature limits its application range, while the Vicat softening temperature of CPVC can reach up to 115°C. Therefore, CPVC can be widely used in various environments and has a good market prospect. However, the processing performance of CPVC is much lower than that of PVC, especially the poor thermal stability of the material. At the same time,...

Claims

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Application Information

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IPC IPC(8): C08L27/24C08L91/06C08L23/06C08L51/04C08K13/02C08K5/57C08K3/26C08K5/134
CPCC08L27/24C08L2201/08C08L2205/035C08L91/06C08L23/06C08L51/04C08K13/02C08K5/57C08K3/26C08K5/1345
Inventor 解骢浩俞黎良朱跃统熊毓文徐婷婷
Owner 杭州电化新材料有限公司
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