A kind of conductive thermoplastic dynamic vulcanized silicone rubber and its preparation method

A technology of dynamic vulcanization and silicone rubber, which is applied in the field of conductive thermoplastic dynamic vulcanization silicone rubber and its preparation, can solve the problem of not further researching the preparation of conductive thermoplastic dynamic vulcanization silicone rubber, not using advanced dynamic vulcanization technology, and the products are not good enough Meet the use requirements and other issues, achieve the effect of large-scale industrial production, excellent mechanical properties, and improve electrical conductivity

Active Publication Date: 2021-12-07
INST OF CHEM ENG GUANGDONG ACAD OF SCI
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing literature, US4500688 and CN106751736A have prepared TPU / silicone rubber thermoplastic elastomers through different dynamic vulcanization systems, but have not further studied the preparation of conductive thermoplastic dynamic vulcanized silicone rubber
CN104098795A obtains a conductive thermoplastic elastomer by simply blending thermoplastics, rubber particles, and conductive fillers, but it does not use the advanced technology of dynamic vulcanization, and the properties of the prepared products have not been well satisfied actual use requirements

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 conductive thermoplastic dynamic vulcanized silicone rubber and its preparation method
  • A kind of conductive thermoplastic dynamic vulcanized silicone rubber and its preparation method
  • A kind of conductive thermoplastic dynamic vulcanized silicone rubber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3 and comparative example 1

[0032] The silicone rubber compositions of Examples 1-3 and Comparative Example 1 are shown in Table 1, and the compositions stated in Table 1 are all parts by mass.

[0033] The silicone rubber composition of table 1 embodiment 1~3 and comparative example 1

[0034]

[0035] The preparation method of the conductive thermoplastic dynamic vulcanized silicone rubber of embodiments 1-3 is as follows:

[0036] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and conductive filler in the formula shown in Table 1 to the internal mixer, set the temperature to 170°C, and 40rpm, banburying time 5min, extrusion granulation to obtain the premix. The thermoplastic polyurethane elastomer used in Examples 1 to 3 is WHT-8285 (polyether) of Wanhua Chemical Company, the silicone rubber compound is EN-5150A of Dongjue Silicone Company, and the compatibilizer is EVA, cross-linked The agent is Dow Corning's hydrogen-contain...

Embodiment 4～6 and comparative example 2

[0045] The silicone rubber compositions of Examples 4-6 and Comparative Example 2 are shown in Table 3, and the compositions stated in Table 3 are all parts by mass.

[0046] The silicone rubber composition of table 3 embodiment 4~6 and comparative example 2

[0047]

[0048]

[0049]The preparation method of the conductive thermoplastic dynamic vulcanized silicone rubber of Examples 4-6 is as follows:

[0050] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and conductive filler in the formula shown in Table 3 to the internal mixer, set the temperature to 180°C, and 60rpm, banburying time 7min, extrusion granulation to obtain the premix. The thermoplastic polyurethane elastomer that uses among the embodiment 4~6 is the S-185ALL (polyester) of Taiwan Kunzhong Company, and the silicone rubber compound is EN-8151 of Dongjue Silicone Company, and the compatibilizer is ethylene acrylic acid copolymer ( E...

Embodiment 7～10 and comparative example 3

[0059] The silicone rubber compositions of Examples 7-10 and Comparative Example 3 are shown in Table 5, and the compositions stated in Table 5 are all parts by mass.

[0060] The silicone rubber composition of table 5 embodiment 7~10 and comparative example 3

[0061]

[0062]

[0063] The preparation method of the conductive thermoplastic dynamic vulcanized silicone rubber of Examples 7-10 is as follows:

[0064] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and conductive filler in the formula shown in Table 5 to the internal mixer, set the temperature to 190°C, and 80rpm, banburying time 4min, extrusion granulation to obtain the premix. The thermoplastic polyurethane elastomer used in Examples 7-10 is WHT-8285 of Wanhua Chemical Company, the silicone rubber compound is EN-5150A of Dongjue Silicone Company, and the crosslinking agent is hydrogen-containing silicone oil of Dow Corning Company, mod...

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
Shore hardnessaaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a conductive thermoplastic dynamic vulcanized silicone rubber and a preparation method thereof. This conductive thermoplastic dynamic vulcanized silicone rubber is composed of the following raw materials: thermoplastic polyurethane elastomer, silicone rubber compound, conductive filler, crosslinking agent, compatibilizer, catalyst. At the same time, the method for preparing the dynamic vulcanization of the conductive thermoplastic dynamic vulcanization silicone rubber is also disclosed. The conductive thermoplastic dynamic vulcanized silicone rubber prepared by the invention has the characteristics of good conductivity, comfortable hand feeling, recyclability, excellent mechanical properties, etc., and can be widely used in the fields of electronics, automobiles, military industry, communications and the like.

Description

technical field [0001] The invention relates to a conductive thermoplastic dynamic vulcanized silicone rubber and a preparation method thereof. Background technique [0002] Dynamic vulcanization is an emerging rubber vulcanization technology. It is a process of melting and blending unvulcanized rubber with thermoplastic materials under high shear, and adding a vulcanizing agent to vulcanize it. In this process, the thermosetting rubber phase (dispersed phase) is uniformly dispersed in the thermoplastic material (continuous phase) in a certain particle size range, and at the same time the rubber phase particles are cross-linked, and finally thermoplastic dynamic vulcanizate (TPV) is obtained. The most important feature of dynamic vulcanization is to carry the thermosetting rubber phase in thermoplastic materials, so as to combine the properties of thermosetting rubber and thermoplastic plastics, and at the same time facilitate the processing and recycling of materials. [0...

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): C08L75/08C08L83/04C08L23/08C08L83/05C08K3/04C08K7/06
CPCC08K2201/001C08L75/08C08L83/04C08L2205/025C08L2205/035C08L2205/08C08L2312/00C08L23/0853C08K3/04C08K7/06
Inventor 师文博麦裕良卢镇辉文铭孝
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap