Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of lubricity polyvinyl chloride processing aid

A technology of polyvinyl chloride and processing aids, applied in the field of chemical processing aids, can solve the problems of metal stripping (poor anti-adhesion, high equilibrium temperature, etc.), achieve the effects of improving dynamic thermal stability, reducing equilibrium temperature, and reducing dosage

Inactive Publication Date: 2012-10-10
SHANDONG SHITUO HIGH MOLECULAR WEIGHT MATERIAL
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lubricating processing aids are currently used to synthesize lubricating polyvinyl chloride with methyl methacrylate (abbreviated as MMA), butyl acrylate (abbreviated as BA), and styrene (abbreviated as ST). Poor; high equilibrium temperature

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Its polymerized monomer composition is a polymerized monomer composition composed of 70Kg of styrene monomer and 30Kg of methyl acrylate monomer with a total weight of 100;

[0021] Its polymerization method is as follows: get the polymerization monomer composition of 25Kg and 0.25Kg sodium dodecylbenzene sulfonate, 0.02Kg ammonium persulfate, 0.004Kg tertiary dodecyl mercaptan, under the stirring speed of 50 rpm Raise the temperature to 60°C and carry out the first stage of reaction. When the temperature rises, turn on the cooling water to cool down, and control the reaction temperature to about 90°C;

[0022] After the first stage of reaction is completed, when the temperature is around 76°C, add 25Kg monomer of the second stage emulsifier sodium lauryl polysulfate, and carry out the second stage of reaction at a stirring speed of 50 rpm, and the reaction temperature is controlled at 80 -90°C, after the second-stage reaction is completed, use the same Fangxing reactio...

Embodiment 2

[0024] Its polymerized monomer composition is a polymerized monomer composition composed of 75Kg of styrene monomer and 25Kg of methyl acrylate monomer with a total weight of 100;

[0025] Its polymerization method is as follows: get the polymerized monomer composition of 25Kg and 0.23Kg sodium dodecyl sulfonate, 0.02Kg potassium persulfate, 0.002Kg tert-dodecyl mercaptan, heat up at a stirring speed of 150 rpm To 65°C, carry out the first stage of reaction, when the temperature rises, turn on the cooling water to cool down, and control the reaction temperature to about 90°C;

[0026] After the first stage of reaction is completed, when the temperature is around 76°C, add 25Kg monomer of the second stage emulsifier sodium lauryl polysulfate, and carry out the second stage of reaction at a stirring speed of 150 rpm, and the reaction temperature is controlled at 80 -90°C, after the second-stage reaction is completed, use the same Fangxing reaction for the third and fourth stages...

Embodiment 3

[0028] Its polymerized monomer composition is a polymerized monomer composition composed of 80Kg of styrene monomer and 20Kg of methyl acrylate monomer with a total weight of 100;

[0029] Its polymerization method is as follows: get the polymerization monomer composition of 25Kg and 0.23Kg sodium lauryl sulfate, 0.025Kg potassium persulfate, 0.0015Kg tertiary tridecyl mercaptan, heat up to 70°C, carry out the first stage of reaction, when the temperature rises, turn on the cooling water to cool down, and control the reaction temperature to about 90°C;

[0030] When the first stage of reaction is completed and the temperature is around 76°C, add 25Kg monomer of the second stage emulsifier sodium lauryl polysulfate, and carry out the second stage of reaction at a stirring speed of 200 rpm, and the reaction temperature is controlled at 80 -90°C, after the second-stage reaction is completed, use the same Fangxing reaction for the third and fourth stages, and then dry to obtain a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of a polyvinyl chloride processing aid, comprising the following steps: combining 70-85 weight parts of polyethylene monomer and 15-30 weight parts of methyl acrylate monomer to form 100 weight parts of polymerized monomer composition; taking the polymerized monomer composition, a surfactant, a radical initiator and a molecular weight regulator, heating up with stirring, when the first-stage reaction begins, cooling the product of the first-stage reaction, adding an emulsifier, beginning the second-stage reaction with stirring; carrying out the third-stage and fourth-stage reactions on the product of the second-stage reaction by using the same way of the second-stage reaction; and drying the product of the fourth-stage reaction to obtain a product. By using the novel process formula, good thermometal peeling off property is achieved; the amount of external lubricants is reduced, and the surface precipitation and migration are reduced; the frictional heat is reduced, the balance temperature is lowered, and the dynamic thermostability is raised.

Description

technical field [0001] The invention relates to a preparation method of a lubricating polyvinyl chloride processing aid, belonging to the field of chemical processing aids. Background technique [0002] In the processing of polyvinyl chloride (hereinafter referred to as PVC), because PVC is a highly polar polymer substance. This makes it have the following two characteristics different from polyolefins during processing: ①Because it is a strong polar polymer, the force between molecules and long chain segments in the molecule is stronger, resulting in higher melt viscosity , The fluidity is not good, the shear increases to form high friction heat, and it has strong adhesion to metal processing equipment. ②PVC resin is a substance that is easily thermally decomposed. Their decomposition temperature is 130-140°C, but the processing temperature is around 180-200°C. This can easily lead to local overheating in the melt, and it is necessary to add a lubricant that can penetrate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/14C08F2/26C08L27/06C08L25/14
Inventor 任爱平
Owner SHANDONG SHITUO HIGH MOLECULAR WEIGHT MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com