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Preparation method of hydraulic suspension main spring rubber

A hydraulic mount and rubber technology, applied in the direction of organic chemistry, etc., can solve problems such as easy cracking and poor aging resistance of main spring rubber

Inactive Publication Date: 2021-09-24
安徽誉林汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention: the main spring rubber prepared by the prior art has poor aging resistance and is prone to cracking and other problems

Method used

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  • Preparation method of hydraulic suspension main spring rubber
  • Preparation method of hydraulic suspension main spring rubber
  • Preparation method of hydraulic suspension main spring rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The UV absorber is prepared by the following steps:

[0055] Step S1, dissolve 22.3g of 2,4-dihydroxybenzoic acid and 19.8g of 2,4-dihydroxybenzamide in 30mL of o-xylene, add 1.2mL of pyridine, raise the temperature to 70°C, and slowly add 26.1mL of dichloro The sulfoxide should be dropped within 90 minutes. After the dropwise addition, the temperature was raised to 120°C for reflux reaction for 1.5 hours. After the reaction, the reaction liquid was cooled to room temperature, and excess thionyl chloride was removed by distillation under reduced pressure, then petroleum ether was added and stirred. After uniformity, filter, and dissolve the filter cake in a mixed solution of absolute ethanol and glacial acetic acid at a volume ratio of 3:1, reflux at 90°C for 30 minutes, filter with suction, and recrystallize with ethylene glycol monomethyl ether to obtain intermediate Body 1;

[0056] Step S2, dissolve 1.2g of 4-hydrazinobenzoic acid and 0.7g of triethylamine in 8.5g ...

Embodiment 2

[0065] The UV absorber is prepared by the following steps:

[0066] Step S1, dissolve 22.8g of 2,4-dihydroxybenzoic acid and 20.1g of 2,4-dihydroxybenzamide in 33mL of o-xylene, add 1.3mL of pyridine, raise the temperature to 72°C, and slowly add 26.2mL of dichloro The sulfoxide should be dropped within 90 minutes. After the dropwise addition, the temperature was raised to 120°C for reflux reaction for 1.5 hours. After the reaction, the reaction liquid was cooled to room temperature, and excess thionyl chloride was removed by distillation under reduced pressure, then petroleum ether was added and stirred. After uniformity, filter, and dissolve the filter cake in a mixed solution of absolute ethanol and glacial acetic acid at a volume ratio of 3:1, reflux at 90°C for 30 minutes, filter with suction, and recrystallize with ethylene glycol monomethyl ether to obtain intermediate Body 1;

[0067] Step S2, dissolve 1.3g of 4-hydrazinobenzoic acid and 0.75g of triethylamine in 8.8g...

Embodiment 3

[0076] The UV absorber is prepared by the following steps:

[0077]Step S1, dissolve 23.6g of 2,4-dihydroxybenzoic acid and 20.3g of 2,4-dihydroxybenzamide in 35mL of o-xylene, add 1.4mL of pyridine, raise the temperature to 75°C, and slowly add 26.4mL of dichloro The sulfoxide should be dropped within 90 minutes. After the dropwise addition, the temperature was raised to 120°C for reflux reaction for 1.5 hours. After the reaction, the reaction liquid was cooled to room temperature, and excess thionyl chloride was removed by distillation under reduced pressure, then petroleum ether was added and stirred. After uniformity, filter, and dissolve the filter cake in a mixed solution of absolute ethanol and glacial acetic acid at a volume ratio of 3:1, reflux at 90°C for 30 minutes, filter with suction, and recrystallize with ethylene glycol monomethyl ether to obtain intermediate Body 1;

[0078] Step S2, dissolving 1.4g of 4-hydrazinobenzoic acid and 0.8g of triethylamine in 9g o...

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Abstract

The invention discloses a preparation method of hydraulic suspension main spring rubber, belongs to the technical field of rubber preparation, and aims to solve the problems of poor aging resistance and easiness in cracking in the prior art. The preparation method comprises the steps of 1, uniformly mixing natural rubber and reclaimed rubber, heating to the temperature of 140-150 DEG C, adding an additive, and uniformly stirring to obtain a mixture; 2, adding carbon black N550 and carbon black N774 into the mixture, heating to the temperature of 150-160 DEG C, and uniformly stirring to obtain a blended rubber material; 3, adding sulfur into the blended rubber material, heating to the temperature of 150 DEG C, and vulcanizing for 50-60 minutes to obtain a semi-finished product; and 4, adding the semi-finished product into a double-roller open mill for rubber mixing to prepare the hydraulic suspension main spring rubber. According to the invention, an ultraviolet light absorber is added, so that a large amount of ultraviolet light can be absorbed, the effect of resisting ultraviolet light is achieved, and the service life of the rubber is prolonged.

Description

technical field [0001] The invention belongs to the technical field of rubber preparation, and relates to a preparation method of hydraulic suspension main spring rubber. Background technique [0002] Automotive engine hydraulic mount refers to the elastic connection system between the engine powertrain and the vehicle frame. The design of the system's damping performance is directly related to the transmission of engine vibration to the vehicle body, which affects the comfort of the vehicle. The rubber main spring is an important part of the hydraulic suspension. The rubber main spring is made of rubber, and its performance will directly affect the NVH effect of the car engine, the handling performance of the vehicle, and even the comfort of the passengers and drivers. [0003] With reference to Chinese patent CN105670069A discloses a kind of manufacturing process of hydraulic suspension rubber main spring, raw material comprises following components: waste rubber, modified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L17/00C08K13/02C08K3/22C08K5/09C08K5/18C08K5/3437C08K5/3472C07D401/14
CPCC08L7/00C07D401/14C08L2201/08C08K2003/2296C08L17/00C08K13/02C08K3/22C08K5/09C08K5/18C08K5/3437C08K5/3472
Inventor 朱林朱宇航韦康然朱家兵
Owner 安徽誉林汽车部件有限公司
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