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Damping rubber and preparation method thereof

A shock-absorbing rubber and rubber technology, which is applied in fiber types, textiles and papermaking, fiber processing, etc., can solve the problems of accelerating the thermal-oxidative aging process of rubber products, the performance degradation of rubber products, and the inability to be dissipated in time, so as to shorten the processing time time, improve wettability, good effect of shock resistance

Active Publication Date: 2018-05-11
山东水星博惠汽车部件股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, rubber has the problem of short service life and frequent replacement in shock absorption. The main factor is that the rubber itself is a poor conductor due to thermal oxidation, and the mechanical energy absorbed by shock absorption cannot be dissipated in time after it is converted into heat energy. , so the rubber will heat up, and the increase in temperature will not only reduce the performance of rubber products, but also accelerate the thermo-oxidative aging process of rubber products, thereby shortening its service life

Method used

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  • Damping rubber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The shock-absorbing rubber consists of 160 parts by weight of nitrile rubber, 5 parts of liquid modified para-aramid, 5 parts of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate, bis 3 parts of (2,4,6-trimethylbenzoyl) phenylphosphine oxide, 1 part of accelerator TMTD, 2 parts of dibutyl phthalate, 3 parts of antioxidant RD, 3 parts of carbonyl iron powder, 4 parts of sulfur And 3,3'-(oxybismethylene)bis(3-ethyl)oxetane 6 parts.

[0035] Shock-absorbing rubber is carried out in the following steps:

[0036] Preparation of liquid modified para-aramid:

[0037] 1) Preparation of solution: Add o-chloro-p-phenylenediamine and 3,4'-diaminodiphenyl ether into the reaction kettle, pump N,N-dimethylformamide, and heat to 60°C under nitrogen protection. Stir until dissolved, the total molar concentration of o-chloro-p-phenylenediamine and 3,4'-diaminodiphenyl ether is 0.40mol / L, the mole of o-chloro-p-phenylenediamine and 3,4'-diaminodiphenyl ether The ratio is 1.5:1...

Embodiment 2

[0044]The shock-absorbing rubber consists of 160 parts by weight of nitrile rubber, 5 parts of liquid modified para-aramid, 5 parts of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate, and triaryl 3 parts of sulfonium hexafluorophosphate, 1 part of accelerator TMTD, 2 parts of dibutyl phthalate, 3 parts of anti-aging agent RD, 3 parts of carbonyl iron powder, 4 parts of sulfur and 3,3'-(oxybis Methyl) bis (3-ethyl) oxetane composed of 6 parts.

[0045] Shock-absorbing rubber is carried out in the following steps:

[0046] Preparation of liquid modified para-aramid:

[0047] 1) Preparation of solution: Add o-chloro-p-phenylenediamine and 3,4'-diaminodiphenyl ether into the reaction kettle, pump N,N-dimethylformamide, and heat to 60°C under nitrogen protection. Stir until dissolved, the total molar concentration of o-chloro-p-phenylenediamine and 3,4'-diaminodiphenyl ether is 0.40mol / L, the mole of o-chloro-p-phenylenediamine and 3,4'-diaminodiphenyl ether The ratio ...

Embodiment 3

[0054] The shock-absorbing rubber consists of 160 parts by weight of nitrile rubber, 5 parts of liquid modified para-aramid, 5 parts of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate, bis 2 parts of (2,4,6-trimethylbenzoyl) phenylphosphine oxide, 1 part of triaryl sulfonium hexafluorophosphate, 1 part of accelerator TMTD, 2 parts of dibutyl phthalate, anti-aging agent RD3 3 parts, carbonyl iron powder 3 parts, sulfur 4 parts and 3,3'-(oxybismethylene)bis(3-ethyl)oxetane 6 parts.

[0055] Shock-absorbing rubber is carried out in the following steps:

[0056] Preparation of liquid modified para-aramid:

[0057] 1) Preparation of solution: Add o-chloro-p-phenylenediamine and 3,4'-diaminodiphenyl ether into the reaction kettle, pump N,N-dimethylformamide, and heat to 60°C under nitrogen protection. Stir until dissolved, the total molar concentration of o-chloro-p-phenylenediamine and 3,4'-diaminodiphenyl ether is 0.40mol / L, the mole of o-chloro-p-phenylenediamine and ...

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Abstract

The invention relates to damping rubber and a preparation method thereof. The damping rubber is obtained through plastication and mixing of rubber and modified aramid fiber. The damping rubber has good stability and mechanical performance and the service life of the rubber can be notably prolonged.

Description

technical field [0001] The invention relates to a shock-absorbing rubber and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Aramid fiber was successfully developed by DuPont in the United States in the 1960s and commercialized in the 1970s. Due to its high strength and high modulus, it has been used in bulletproof vests, firefighting clothing, aerospace, skeleton materials and other fields. . These excellent properties are mainly determined by the aromatic structure and amide bonds in its macromolecular skeleton. Their existence makes the molecular chains rigid and rod-like, and they interact with each other through strong hydrogen bonds. However, due to the high melting point, high glass transition temperature (Tg) and poor solubility of PPTA, the production process of para-aramid polymer A phase change occurs, and the final product exists in the form of solid particles, and is only soluble in concentrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L77/10C08L7/00C08L63/00C08K13/02C08K5/5397C08K5/12C08K5/3437C08K5/56C08K3/06C08K5/1515C08J3/28D06M13/335D06M13/192D06M101/36
CPCC08J3/28C08J2309/02C08J2407/00C08J2477/10C08L9/02C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L2205/16D06M13/192D06M13/335D06M2101/36C08L77/10C08L63/00C08K13/02C08K5/12C08K5/3437C08K5/56C08K3/06C08L7/00C08K5/1515
Inventor 郭肖宏
Owner 山东水星博惠汽车部件股份有限公司