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Preparation method of modified polyvinyl chloride

A technology of polyvinyl chloride, manufacturing method, applied in the field of chemical industry, can solve problems such as poor mechanical properties, restricted development, poor compatibility, etc.

Inactive Publication Date: 2021-05-25
广西龙酉商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above inventions and prior art overcome the disadvantages of poor mechanical properties of polyvinyl chloride, poor radiation resistance and high price through blending modification, but due to the poor compatibility between polyvinyl chloride and other materials, the blending effect is not good , limiting its further development

Method used

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  • Preparation method of modified polyvinyl chloride
  • Preparation method of modified polyvinyl chloride
  • Preparation method of modified polyvinyl chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of manufacture method of modified polyvinyl chloride, its specific scheme is as follows:

[0026] Pretreatment of 100g polyvinyl chloride pellets: Soak polyvinyl chloride pellets in acetone solution for 30 minutes, then soak in 60% ethanol solution for 20 minutes, then wash with deionized water to remove ethanol, and finally immerse them in 60°C Dry for 3 hours; carry out plasma treatment: place the cleaned polyvinyl chloride pellets in a plasma high-vacuum preparation chamber. 3 / s, the power is 40w, and the processing time is 10s; surface grafting reaction: add the processed polyvinyl chloride pellets to 500g organic solvent, and after the dispersion is uniform, add 5g terminal allyl polyether, 0.23g of 1- Vinyl-3-butylimidazole tetrafluoroborate, CAS: 1033461-44-7, 0.5g nickel acrylate, mix well and bubble with nitrogen for 5min, then add 0.1g benzoyl peroxide, stir and mix for 5min Raise the temperature to 85°C and react for 10 minutes. After the completion,...

Embodiment 2

[0034] A kind of manufacture method of modified polyvinyl chloride, its specific scheme is as follows:

[0035] Pretreatment of 120g polyvinyl chloride pellets: Soak polyvinyl chloride pellets in acetone solution for 40 minutes, then soak in 75% ethanol solution for 50 minutes, then wash with deionized water to remove ethanol, and finally immerse them in 70°C Dry for 4 hours; carry out plasma treatment: place the cleaned polyvinyl chloride pellets in the plasma high-vacuum preparation chamber, and after vacuuming, pass in argon and oxygen, and the total flow rate of the gas is 30cm 3 / s, the power is 50w, and the processing time is 30s; surface grafting reaction: add the processed polyvinyl chloride pellets to 550g organic solvent, and after the dispersion is uniform, add 12g terminal allyl polyether, 1.23g of 1- Vinyl-3-butylimidazolium tetrafluoroborate, CAS: 1033461-44-7, 0.8g nickel acrylate, mix well and bubble with nitrogen for 8min, then add 0.3g benzoyl peroxide, stir a...

Embodiment 3

[0043] A kind of manufacture method of modified polyvinyl chloride, its specific scheme is as follows:

[0044] Pretreatment of 150g of polyvinyl chloride pellets: Soak the polyvinyl chloride pellets in acetone solution for 60 minutes, then soak in 95% ethanol solution for 60 minutes, then wash with deionized water to remove ethanol, and finally immerse them in 80°C Dry for 6 hours; carry out plasma treatment: place the cleaned polyvinyl chloride pellets in the plasma high-vacuum preparation chamber, and after vacuuming, pass in argon and oxygen, and the total flow rate of the gas is 40cm 3 / s, the power is 60w, and the processing time is 40s; surface grafting reaction: add the processed polyvinyl chloride pellets to 600g organic solvent, and after the dispersion is uniform, add 20g terminal allyl polyether, 2.52g of 1- Vinyl-3-butylimidazolium tetrafluoroborate, CAS: 1033461-44-7, 1.7g nickel acrylate, mix well and bubble with nitrogen for 10min, then add 0.5g benzoyl peroxid...

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Abstract

The invention relates to the field of chemical engineering, in particular to a manufacturing method of modified polyvinyl chloride. Clean polyvinyl chloride granules are subjected to plasma treatment and then subjected to free radical polymerization under catalysis of a peroxide, allyl-terminated glycidyl-tetrahydrofuran copolyether is grafted to the surface of the material, and the surface-modified polyvinyl chloride material is obtained. The material surface performance is changed, the compatibility of the material is improved, the polyvinyl chloride material can be better blended and modified with other high polymer materials, inorganic materials and auxiliary materials, the machinability and modification mode of the material are enhanced, and conditions are created for further widening the application range and use environment of the material.

Description

technical field [0001] The invention relates to the field of chemical engineering, in particular to a method for producing modified polyvinyl chloride. Background technique [0002] Because of its unique properties, PVC is widely used in aerospace, petrochemical, construction, machinery, and even in our daily life. [0003] CN103980634A relates to a polyvinyl chloride modified plastic, comprising: 70-85 parts of polyvinyl chloride, 3-6 parts of EVA resin, 3-8 parts of ABS resin, 2-5 parts of polystyrene, 3-5 parts of low-density polyethylene 5-10 parts of chlorinated polyvinyl chloride, 0.5-2 parts of titanium dioxide. Improve the impact resistance, cold resistance and processing performance of polyvinyl chloride. [0004] CN1004759B discloses a physical modification of soft PVC. Generally, PVC has the problems of low temperature flexibility and poor elasticity. The invention is mainly composed of PVC resin, rosin nitrile, ester compound and other processing aids. Its p...

Claims

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Application Information

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IPC IPC(8): C08G81/02C08F290/06C08F226/06C08F230/04
CPCC08G81/021C08F290/062
Inventor 许月婷赵莉莉何志松
Owner 广西龙酉商贸有限公司
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