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Fluorine-containing plastic processing assistant and preparation method thereof

A processing aid and plastic technology, applied in the field of plastic processing, can solve the problems of thin film shark skin, etc., to achieve the effect of eliminating shark skin, improving brightness and smoothness, and reducing melt pressure

Inactive Publication Date: 2015-02-25
ZHEJIANG BILI PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is the problem that the phenomenon of "shark skin" will appear on the surface of the film during the extrusion molding process of the existing thermoplastic polyolefin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 5Kg of polycaprolactone butanediol with a molecular weight of 2000-6000 and 18Kg of magnesium oxide into the reaction kettle, heat to 130°C, and then add 25Kg of fluoropolymer. After insulated and stirred for 30 minutes, the material was discharged and pulverized with a pulverizer to obtain a fluorine-containing processing aid with a particle size of 1200um.

Embodiment 2

[0019] 5Kg of isopentenol polyoxyethylene ether with a molecular weight of 2400 and 18Kg of magnesium oxide were added into the reactor together, heated to 130°C, and then 25Kg of fluoropolymer was added. After insulated and stirred for 30 minutes, the material was discharged and pulverized with a pulverizer to obtain a fluorine-containing processing aid with a particle size of 1200um.

Embodiment 3

[0021] Add 5Kg of polycaprolactone butanediol with a molecular weight of 2400 and 16Kg of aluminum nitride into the reaction kettle together, heat to 130°C, and then add 28Kg of fluoropolymer. After heat preservation and stirring for 30 minutes, the material is discharged and pulverized with a pulverizer to obtain a fluorine-containing processing aid with a particle size of 1000 um.

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PUM

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Abstract

The invention provides a fluorine-containing plastic processing assistant and a preparation method thereof. The assistant comprises the following components in parts by weight: 20-60 parts of fluorine-containing polymer, 20-60 parts of interfacial agent and 15-30 parts of heat stabilizer. The method comprises the following steps: proportionally adding the interfacial agent and heat stabilizer into a reaction kettle, adding the fluorine-containing polymer when the temperature reaches 120-140 DEG C, thoroughly and uniformly mixing, and discharging to obtain the finished product.

Description

technical field [0001] The invention relates to the field of plastic processing, in particular to a preparation method and application of a fluorine-containing plastic processing aid. Background technique [0002] In the extrusion molding process of thermoplastic polyolefins, such as when using LLDPE raw materials containing linear low density polyethylene to blow into films, there is a critical shear rate. When the shear rate of screw extrusion is lower than the critical shear rate, the surface of the blown film is smooth, and when the shear rate of screw extrusion is higher than the critical shear rate, "shark skin" will appear on the surface of the film This is the phenomenon of melt fracture. [0003] When fluorine-containing polymer processing aids (PPA) are added to thermoplastic polyolefins, during the extrusion process, the specially designed PPA will migrate to the interface between the polymer and the device, forming a layer on the surface of the device Coatin...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L27/18C08L27/20C08L27/12C08L29/10C08L67/04C08L71/02C08K3/22C08K3/28C08L23/08
CPCC08L27/12C08L23/0815C08L2203/16C08L2205/03C08L67/04C08K2003/222C08L71/02
Inventor 王彤
Owner ZHEJIANG BILI PACKAGING
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