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

A kind of preparation method of rubber-plastic composition

A composition and rubber-plastic technology, which is applied in the field of rubber-plastic composition preparation, can solve the problems of low inflation and poor mechanical properties of thermoplastic films, and achieve the effects of good elasticity, uniform appearance, and improved inflation ratio

Active Publication Date: 2017-12-22
CHINA PETROLEUM & CHEM CORP
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing a rubber-plastic composition that overcomes the defects that the blow-up ratio of the rubber-plastic composition in the prior art is relatively small and the mechanical properties of the thermoplastic film are poor.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of rubber-plastic composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The invention provides a method for preparing a rubber-plastic composition, the method comprising:

[0017] (1) Carry out banburying and granulation with halogenated butyl rubber, low molecular weight nylon and activator to obtain modified rubber;

[0018] (2) The modified rubber obtained in step (1), copolymerized nylon, long carbon chain nylon, low-density polyethylene, vulcanizing agent and vulcanization accelerator are blended, heated and melted and extruded to granulate,

[0019] Wherein, the weight average molecular weight of the low-molecular-weight nylon is 5000-25000 Daltons, the melt mass flow rate of the low-density polyethylene measured according to GB / T3682-2000 is 0.1-10g / 10min, and the low-density polyethylene The density of ethylene is 0.915-0.925g / cm 3 .

[0020] In the present invention, dynamic vulcanization refers to the blending of non-crosslinked rubber and thermoplastic polymers (such as resins) that cannot be vulcanized under the action of high...

preparation example 1

[0076] This preparation example is used for the rubber and plastic composition provided by the present invention and its preparation method.

[0077] (1) 100 parts by weight of bromobutyl rubber, 8 parts by weight of low molecular weight nylon, 1 part by weight of stearic acid, 6 parts by weight of epoxy soybean oil, 3 parts by weight of tackifier HY-203 (Shanxi Chemical Industry Research Institute), 3 parts by weight of leveling agent 40MS (Germany S.S company) were put into the internal mixer for initial mixing, the speed of the rotor was 60rpm, and banburying was carried out at 80°C, the banburying pressure was 0.3MPa, and the banburying The time is 3.5min, and then the banbury film obtained is granulated in a rubber granulator to obtain modified rubber particles;

[0078] (2) The modified rubber particles obtained in step (1), 2 parts by weight of zinc oxide, 0.8 parts by weight of insoluble sulfur, 2 parts by weight of accelerator DM (Tianjin Labo Auxiliary Co., Ltd.), 30...

preparation example 2

[0080] This preparation example is used for the rubber and plastic composition provided by the present invention and its preparation method.

[0081] (1) 100 parts by weight of bromobutyl rubber, 10 parts by weight of low molecular weight nylon, 2 parts by weight of stearic acid, 7.5 parts by weight of epoxy soybean oil, 3.5 parts by weight of tackifier HY-203 (Shanxi Chemical Industry Research Institute), 3.5 parts by weight of leveling agent 40MS (German S.S company) were put into the internal mixer for initial mixing, the speed of the rotor was 40rpm, and banburying was carried out at 100°C, the banburying pressure was 0.2MPa, and banburying The time is 4min, then the banbury rubber sheet obtained is granulated in a rubber granulator to obtain modified rubber particles;

[0082] (2) The modified rubber particle that step (1) obtains, the zinc oxide of 3 parts by weight, the insoluble sulfur of 0.5 part by weight, the accelerator DM (Tianjin Labo Auxiliary Co., Ltd.) of 1.0 ...

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

PropertyMeasurementUnit
molecular weightaaaaaaaaaa
melt flow indexaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for a rubber-plastic composition. The method comprises the following steps: (1) subjecting halogenated butyl rubber, low-molecular-weight nylon and an activator to internal mixing and granulating so as to obtain modified rubber; (2) subjecting the modified rubber obtained in the step (1), copolymerized nylon, long-carbon-chain nylon, low-density polyethylene, a vulcanizing agent and a vulcanization accelerator to blending, and carrying out heating, melting, extruding and granulating, wherein the weight-average molecular weight of the low-molecular-weight nylon is 5000 to 25000 Dalton; and the low-density polyethylene has a melt mass flow rate of 0.1 to 10 g / 10min and a density of 0.915 to 0.925 g / cm3 which are determined according to GB / T3682-2000. The rubber-plastic composition prepared by using the method provided by the invention has good processibility and blow moldability, well improves the blow-up ratio of the rubber-plastic composition in the film blowing process; meanwhile, the thermoplastic thin film prepared from the rubber-plastic composition provided by the invention has excellent mechanical property and airtightness.

Description

technical field [0001] The invention relates to a preparation method of a rubber and plastic composition. Background technique [0002] Thermoplastic elastomers have many possible structures. Their products not only have the excellent properties of high elasticity and aging resistance of traditional cross-linked vulcanized rubber, but also have the characteristics of convenient processing and many processing methods of ordinary plastics. Generally, injection molding, extrusion, etc. can be used. Extrusion, blow molding and other processing methods of production. [0003] CN101296997A discloses a thermoplastic elastomer composition comprising: at least one halogenated isobutylene-containing elastomer; at least one nylon resin with a melting point of about 170-260° C., and a low molecular weight polymer-type nylon plasticizer . The thermoplastic elastomer composition has excellent airtightness, durability and flexibility. However, due to the strong hygroscopicity of nylon i...

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 Patents(China)
IPC IPC(8): C08L23/28C08L77/00C08L77/06C08L77/02C08L23/06C08K13/02C08K3/06C08K3/22C08K5/09C08K5/1515C08K5/47B29C47/92B29C48/92
Inventor 罗华林何振海景政红周弢杜悦
Owner CHINA PETROLEUM & CHEM CORP
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