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

A kind of rubber material with high hardness and low compression set and preparation method thereof

A permanent deformation and rubber material technology, which is applied in the field of rubber, can solve the problems of high hardness and low compression permanent deformation rubber materials, such as unsatisfactory effects, inability to continue production, and complex processes, etc., to achieve broad industrialization and market prospects, taking into account processing technology and Performance requirements, the effect of simple preparation method

Active Publication Date: 2017-12-22
SICHUAN UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method is complex and involves procedures such as vulcanizing agent solution treatment and product drying.
[0010] To sum up, the existing methods for obtaining rubber materials with high hardness and low compression set are not ideal, the cost is high, and continuous production cannot be achieved. It is necessary to improve the method to obtain significant effects, continuous production, and low cost. High hardness and low compression set rubber material

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 rubber material with high hardness and low compression set and preparation method thereof
  • A kind of rubber material with high hardness and low compression set and preparation method thereof
  • A kind of rubber material with high hardness and low compression set and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Select 100 parts of EPDM rubber (Keltan2650) as the matrix of the rubber soft layer, add 60 parts of carbon black N990 (filler), 3 parts of bis-tert-butyl peroxide dicumylbenzene (vulcanizing agent), three parts Allyl isocyanurate (curing aid) 1 part, zinc oxide (activator) 5 parts, stearic acid (processing aid) 0.5 parts, 2,2,4-trimethyl-1,2- 2 parts of dihydroquinoline polymer (anti-aging agent), 1 part of 2-mercaptobenzimidazole (anti-aging agent), knead on a double-roll mill at 80 ° C for 15 to 20 minutes to produce a rubber soft layer compound Rubber mixing. The Shore A hardness of the mixed rubber after vulcanization was 68, and the compression set was 4.8 (125°C×22h, 25%).

[0051] (2) Select 100 parts of EPDM rubber of the same brand as the matrix of the rubber hard layer, add 60 parts of carbon black N550 (filler), 60 parts of silicon powder (filler), bis-tert-butyl peroxide diisopropylbenzene (vulcanizing agent) 3 parts, triallyl isocyanurate (curing aid...

Embodiment 2

[0054] The one stacked unit in step (3) in Example 1 was changed to two stacked units to obtain 8 layers of soft and hard alternating multilayer structure rubber material, and the corresponding test results are shown in Table 1.

Embodiment 3

[0058] (1) Select 100 parts of EPDM rubber (Keltan2650) with a higher double bond content as the matrix of the rubber soft layer, add 60 parts of carbon black N990 (filler), bis-tert-butyl peroxide diisopropylbenzene (sulfurized agent) 3 parts, triallyl isocyanurate (co-curing agent) 1 part, zinc oxide (activator) 5 parts, stearic acid (processing aid) 0.5 parts, 2,2,4-trimethyl 2 parts of 1,2-dihydroquinoline polymer (anti-aging agent), 1 part of 2-mercaptobenzimidazole (anti-aging agent), kneading on a double-roller mill at 80°C for 15 to 20 minutes to produce a tablet. A rubber soft layer compound is prepared. The Shore A hardness of the mixed rubber after vulcanization was 68, and the compression set was 4.8 (125°C×22h, 25%).

[0059] (2) Select 100 parts of EPDM rubber (Keltan2470) with higher ethylene content as the matrix of the rubber hard layer, add 60 parts of carbon black N550 (filler), bis-tert-butyl peroxide dicumyl benzene (vulcanizing agent) ) 2 parts, trially...

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
compression setaaaaaaaaaa
Shore hardnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-hardness low-compression permanent set rubber material and a preparation method thereof. The rubber material is prepared through a microlayered coextrusion device and has a multilayered structure of soft layers alternating with hard layers, wherein the rubber soft layers and the rubber hard layers are adjusted and controlled through formulas, both the demands of a processing technology and performance are considered, the soft layers have low-compression permanent set, the hard layers have high hardness, and the rubber material of the multilayered structure of the soft layers alternating with the hard layers has the high hardness and low-compression permanent set performance. The number of layers and the thickness of the layers of the rubber material are controllable, the performance is excellent, the preparation method is simple in technology, the operation and control are simple, continuous production is realized, the production efficiency is high, the production cost is low, and the rubber material has wide industrial and market prospect.

Description

technical field [0001] The invention belongs to the field of rubber, in particular to a rubber material with high hardness and low compression set and a preparation method thereof. Background technique [0002] Rubber has the characteristics of high elasticity, low modulus, low glass transition temperature, high wear resistance, low density and can be filled in large quantities, so it is widely used in various fields of national economy. Various types of products can be manufactured from rubber compounds through different processing methods. The rubber material can be vulcanized into various molded products with the help of a hot press and a mold, such as sealing rings, leather cups, shock absorbing pads, etc.; rubber hoses and profiles of different diameters can be extruded through the extruder. [0003] Rubber extrusion is a process in which the rubber material passes through the action between the barrel wall of the extruder and the screw to continuously make semi-finish...

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): C08L23/16C08L91/06C08K13/02C08K3/04C08K5/14C08K5/3492C08K3/22C08K5/09C08K5/3437C08K5/3417C08K3/34B32B27/32
CPCB32B27/32B32B2319/00C08K3/04C08K3/22C08K5/09C08K5/14C08K5/3417C08K5/3437C08K5/3492C08K13/02C08L23/16C08L91/06C08K3/34C08K2003/2296
Inventor 吴宏沈丽媛郭少云王忞
Owner SICHUAN UNIV
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