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Non-flow lines crack high twice processing thermo-elastic resin composition applied in PVC transparent sheet

A resin composition and secondary processing technology, which is applied in the field of non-flowline high secondary processing thermoelastic resin composition, can solve problems such as insufficient thermoelasticity and flow lines, and achieve the effect of solving insufficient thermoelasticity

Inactive Publication Date: 2009-03-11
SHANDONG RUIFENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a non-flowline high secondary processing thermoelastic processing aid applied to PVC transparent sheets, so as to solve the problem of flow lines that are prone to occur during the processing of PVC transparent sheets, and the secondary processing Insufficient thermoelasticity in the process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] According to the above process, the first-stage polymerized monomer is methyl methacrylate, the second-stage polymerized monomer is methyl methacrylate, and the third-stage polymerized monomer is methyl methacrylate.

Embodiment 2

[0014] According to the above process, the first-stage polymerized monomer is methyl methacrylate, the second-stage polymerized monomer is ethyl methacrylate, and the third-stage polymerized monomer is butyl methacrylate.

Embodiment 3

[0016] According to the above process, the first-stage polymerized monomer is ethyl acrylate, the second-stage polymerized monomer is ethyl methacrylate, and the third-stage polymerized monomer is butyl acrylate.

[0017] Apply Examples 1 to 3 to the non-flowline high secondary processing thermoelastic resin composition (hereinafter referred to as auxiliary agent) of PVC transparent sheet to prepare transparent polyvinyl chloride resin test material (known) according to the following formula.

[0018] 100 parts polyvinyl chloride

[0019] Auxiliary 2 parts

[0020] G-60 0.6 parts

[0021] G-74 0.4 parts

[0022] TMS-181 2 copies

[0023] Weigh each raw material and mix according to the formula, use a high-speed mixer for high-speed mixing, stop stirring and discharging when the temperature rises to 120°C, spread it on a cooling platform to cool down naturally, and obtain a transparent polyvinyl chloride mixture for testing .

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PUM

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Abstract

The invention provides a flow liner free high secondary processing thermoelastic resin composite applied to PVC transparent sheets. The composite is characterized in that a polymerization monomer is subjected to three-stage emulsion polymerization reaction to obtain a graft polymer; in the reaction, a first-stage polymerization monomer is one of methyl methacrylate and ethyl acrylate, a second-stage polymerization monomer is one of the methyl methacrylate and ethyl methacrylate, a third-stage polymerization monomer is one of the methyl methacrylate, butyl methacrylate and butyl acrylate, and the consumption of the polymerization monomer in each of the three-stage reaction is one-third of the total consumption. When the thermoelastic resin composite is added in the PVC transparent sheets, the problems of flow liner appeared during the PVC transparent sheet processing and poor thermoelasticity in the secondary processing are solved.

Description

technical field [0001] The invention belongs to processing aids for PVC transparent sheets, in particular to a thermoelastic resin composition without flow lines and high secondary processing technical background [0002] Polyvinyl chloride is one of the most widely used general-purpose plastics. Among them, transparent polyvinyl chloride has a wide range of applications and plays an important role in all aspects of national production and life. However, the molding conditions of transparent polyvinyl chloride resin are harsh and the processing requirements are high. , the formula design of sheet processing is subject to many restrictions, flow lines are prone to appear during processing, and the problem of thermoelasticity in the secondary processing process is relatively prominent, and the qualified rate of secondary molding of products is very low, which limits the field of secondary processing of transparent PVC sheets more applications. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F2/22C08L27/06C08J5/18
Inventor 刘春信丁锋徐勤国赵立峰朱希堂葛峰
Owner SHANDONG RUIFENG CHEM
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