Acrylic rubber composition

一种丙烯酸橡胶、组合物的技术，应用在减震器、喷气推进装置、运输和包装等方向，能够解决tanδ易降低、防振效果受损等问题，达到tanδ值优异、防振性提高的效果

Active Publication Date: 2021-03-23
NOK CORP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In conventional rubber materials, it has been found that tanδ tends to decrease at high temperature, and the anti-vibration effect tends to be impaired.

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
  • Acrylic rubber composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Acrylic rubber containing active chlorine groups 100 parts by weight

[0041] (UNIMATEC product Noxtite PA401-L)

[0042] Styrene acrylic resin containing epoxy group 20 parts by weight

[0043] (East Asia synthetic products ARUFON UG-4040)

[0044] Sulfur 0.2 parts by weight

[0045] These were kneaded with a pressurized kneader, followed by roll processing with an open roll, and after vulcanization at 190°C for 8 minutes, oven vulcanization (secondary vulcanization) at 175°C for 5 hours to form a thickness of 2mm of flakes.

[0046] Kneading properties, roll workability, and vulcanization formability were evaluated, and dynamic properties (tan δ) were measured.

[0047] Mixability:

[0048] (1) When kneading with a pressurized kneader, no bridge (rubber block) is formed in the gap between the rotor and the weight, and the kneading process is carried out stably

[0049] (2) There is no pollution in the mixer after the blank is discharged

[0050] In (1) and (2),...

Embodiment 2

[0064] In Example 1, instead of the epoxy group-containing styrene acrylic resin, the same amount of hydroxyl group-containing styrene acrylic resin (Toagosei ARUFON UH-2170) was used.

Embodiment 3

[0066] In Example 1, the amount of the epoxy group-containing styrene acrylic resin was changed to 40 parts by weight.

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
degree of polymerizationaaaaaaaaaa
Login to view more

Abstract

An acrylic rubber composition, wherein 5 to 80 parts by weight, preferably 10 to 60 parts by weight, more preferably 20 to 40 parts by weight of a styrene acrylic resin containing functional groups other than carboxyl groups is added to 100 parts by weight of the acrylic rubber . By adding a specific ratio of styrene acrylic resin to acrylic rubber, it is possible to mold a vibration-proof part with excellent tanδ value at high temperature and improved vibration-proof performance. The above-mentioned acrylic rubber composition can be effectively used as a molding material for brackets, gaskets, and the like around motor vehicles used in high-temperature environments.

Description

technical field [0001] This invention relates to acrylic rubber compositions. More specifically, it relates to an acrylic rubber composition capable of forming a part having excellent vibration-proof properties at high temperature. Background technique [0002] In conventional rubber materials, it has been found that tan δ tends to decrease at high temperature, and the anti-vibration effect tends to be impaired. Although acrylic rubber can be used as a molding material for anti-vibration parts such as brackets and grommets around automobile engines used in high-temperature environments, the same tendency has been found in this case, and it is desired to improve this tendency. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Application Laid-Open No. 11-158343 [0006] Patent Document 2: Japanese Unexamined Patent Publication No. 2011-74172 [0007] Patent Document 3: Japanese Patent Laid-Open No. 2000-338723. Content...

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): C08L33/06C08K5/10C08L25/08C08L63/00F16F15/08
CPCC08L63/00C08L33/08C08L33/16C08L25/14C08K3/06C08K5/10C08L25/08C08L33/06F16F15/08B60K5/1208C08L13/00F16F1/3605F16F1/3732F16F2224/025F16F2226/04
Inventor 根上哲郎
Owner NOK CORP
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