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Damping rubber material with low hardness, high-temperature static torque and good durability and preparation method thereof

A shock-absorbing rubber and rubber material technology, which is applied in the field of rubber composite material preparation, can solve the problems of poor durability, high hardness, small static torque, etc., achieve great economic value, improve mechanical strength, and optimize material composition.

Inactive Publication Date: 2012-10-03
XIAN HANHUA RUBBER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a rubber material for a torsional vibration damper and its preparation method, which solves the problems of existing rubber composite materials such as high hardness, difficulty in pressing, low static torque at high temperature, and poor durability.

Method used

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  • Damping rubber material with low hardness, high-temperature static torque and good durability and preparation method thereof
  • Damping rubber material with low hardness, high-temperature static torque and good durability and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] NBR (grade 1043, with acrylonitrile content of 30%) and styrene-butadiene rubber (grade 1052) in the ratio of 70:30 in parts by mass are meshed in an open mill for a certain period of time, and after several passes , until the mixed glue has a Mooney viscosity of ML at 100°C 1+4 In the range of 40 to 60.

[0030] The masterbatch after the above mixing is moved into the internal mixer, and the mass parts of the masterbatch are counted as 100 parts, 30 parts of N550 carbon black, 15 parts of N330 carbon black, 8 parts of nano-silica with a particle size of 10-30nm , 10 parts of light calcium carbonate, 1 part of silane coupling agent KH550, 1 part of processing aid l-24, 5 parts of zinc oxide, 1 part of stearic acid are added to the internal mixer, and then softening plasticizer phthalic acid is added 10 parts of dibutyl ester, 1.5 parts each of chemical antioxidant RD and antioxidant 4010NA; mix evenly under high temperature and high shear conditions, wherein the intern...

Embodiment 2~7

[0033] Example 2~7

[0034]

[0035]

[0036] In a word, the present invention provides a shock-absorbing rubber material with low hardness, high-temperature static torque and good durability and a preparation method thereof. The implementation process is simple and easy, and has good industrialization value.

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Abstract

The invention relates to a damping rubber material with low hardness, high-temperature static torque and good durability and a preparation method thereof. The damping rubber material comprises the following components in mass parts: 100 parts of nitrile rubber and butadiene styrene rubber composite, 40-70 parts of reinforcement bulking agent, 5-10 parts of nano white carbon black, 1-3 parts of coupling agent and processing agent, 10-15 parts of softened plasticizer, 2-3 parts of anti-aging agent, and 8-10 parts of curing agent and auxiliary agent; and moreover, the technological parameters of rubber material vulcanization are as follows: a press vulcanizer is adopted for vulcanization, the vulcanization time is 10-20 minutes, the vulcanization temperature is 150-160 degree C, and the vulcanization pressure is 10-14 MPa. The damping rubber material disclosed by the invention has the advantages of low hardness, high static torque at 80 degree C, good durability at high temperature of 130 degree C, as well as good processability. The material can be used as damping rubber materials used in rubber torque vibration dampers of engines, and solves the problems of high hardness, difficulty in press fitting, low static torque at high temperature, poor durability and the like in the existing rubber composite material.

Description

technical field [0001] The invention relates to a damping rubber material with low hardness, high damping ratio, high temperature static torque and good durability and a preparation method thereof. The material can be used as a damping rubber material for engine rubber torsional vibration dampers, and belongs to the preparation of rubber composite materials technology field. Background technique [0002] At present, the internal combustion engine is developing towards high power and high speed. The total excitation torque amplitude of each harmonic torsional vibration caused by its reciprocating inertial force and the explosion pressure in the cylinder increases, and the lower main harmonic torsional resonance enters the engine operating speed range. , will bring more serious problems to engine reliability. According to the information, the useful power of the engine will be consumed when the shaft system undergoes torsional vibration. When the main harmonic resonance of a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L9/06C08K13/02C08K3/04C08K3/26C08K3/36C08K5/12C08K5/14C08K3/22C08K5/09B29C35/02
Inventor 高超峰黄捷许昊扈广法
Owner XIAN HANHUA RUBBER TECH
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