Graphene composite damping rubber material and preparation method thereof

A graphene composite and shock-absorbing rubber technology, which is applied in the field of rubber materials, can solve problems such as shortened service life of shock-absorbing parts, and achieve good elasticity, good fatigue resistance, and good adhesion performance

Inactive Publication Date: 2020-02-28
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases, the actual working environment temperature has exceeded the temperature range of natural rubber, resulting in a serious shortening of the service life of natural rubber shock absorbers

Method used

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  • Graphene composite damping rubber material and preparation method thereof
  • Graphene composite damping rubber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The formula selects 75g natural rubber, 15g high vinyl polybutadiene rubber, 10g neoprene rubber, 5g nano-zinc oxide, 15g N990 carbon black, 20g DZ-13 carbon black, 10g N220 carbon black, 1 part stearic acid, anti-aging Agent MB 1.5g, antioxidant 4020 1.5g, coupling agent 2 parts, graphene 0.4g, insoluble sulfur 0.8g, accelerator BZ 1g, accelerator DTDM 1.5g, accelerator TRA 0.5g, accelerator DM 0.8g.

[0037] a. Preparation of graphene premix: After nano-zinc oxide 5g and graphene 0.4g are treated with coupling agent according to the same mass fraction, add 10g chloroprene rubber on the open mill, keep the roller distance 0.1mm, and the roller temperature Keep at 25~40℃, thin pass 6-8 times;

[0038] b. Internal mixing and blending of natural rubber and high vinyl polybutadiene rubber: Mix natural rubber and high vinyl polybutadiene in an internal mixer according to the formula ratio, and control the mixing temperature at 110~120°C. The time is 5~6 minutes; then thin ...

Embodiment 2

[0044] The formula selects 80g natural rubber, 12.5g high vinyl polybutadiene rubber, 7.5g neoprene, 6.5g nano-zinc oxide, 25g N990 carbon black, 15g DZ-13 carbon black, 15g N220 carbon black, 1.2 stearic acid parts, antioxidant MB 1.5g, antioxidant 4020 1.5g, coupling agent 2.5 parts, graphene 0.6g, insoluble sulfur 1.2g, accelerator BZ 0.8g, accelerator DTDM 1.3g, accelerator TRA 0.4g, accelerator DM 0.9g.

[0045] a. The preparation of graphene premix: nano-zinc oxide 6.5g and graphene 0.6g are treated with coupling agent according to the same mass fraction, and then added to 7.5g chloroprene rubber on the open mill, keeping the roll distance 0.1mm, The temperature of the roller is kept at 25~40℃, thin pass 6-8 times;

[0046] b. Internal mixing and blending of natural rubber and high vinyl polybutadiene rubber: Mix natural rubber and high vinyl polybutadiene in an internal mixer according to the formula ratio, and control the mixing temperature at 110~120°C. The time is ...

Embodiment 3

[0052] The formula selects 85g natural rubber, 10g high vinyl polybutadiene rubber, 5g neoprene rubber, 8g nano-zinc oxide, 30g N990 carbon black, 10g DZ-13 carbon black, 20g N220 carbon black, 1.5 parts of stearic acid, anti-aging Agent MB 1.5g, antioxidant 4020 2g, coupling agent 3 parts, graphene 0.75g, insoluble sulfur 1.5g, accelerator BZ 0.5g, accelerator DTDM 1.2g, accelerator TRA0.3g, accelerator DM 1g.

[0053] a. Preparation of graphene premix: After nano-zinc oxide 8g and graphene 0.75g are treated with coupling agent according to the same mass fraction, add 5g chloroprene rubber on the open mill, keep the roller distance 0.1mm, and the roller temperature Keep at 25~40℃, thin pass 6-8 times;

[0054] b. Internal mixing and blending of natural rubber and high vinyl polybutadiene rubber: Mix natural rubber and high vinyl polybutadiene in an internal mixer according to the formula ratio, and control the mixing temperature at 110~120°C. The time is 5~6 minutes; then th...

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Abstract

The invention relates to a graphene composite damping rubber material and a preparation method thereof. The rubber material comprises the following substances in parts by mass: 100 parts of rubber, 40-60 parts of a reinforcing filler, 3-4 parts of an anti-aging agent, 5-8 parts of nano-zinc oxide, 1-1.5 parts of stearic acid, 0.8-1.5 parts of a vulcanizing agent, 2-3.5 parts of a vulcanizing aid,0.4 to 0.75 part of graphene, 2 to 3 parts of a coupling agent and 3 to 5 parts of an anti-ozone agent, wherein the number of layers of the graphene is not more than 10, and the 100 parts of rubber iscomposed of 75-85 parts of natural rubber, 10-15 parts of high-vinyl polybutadiene rubber and 5-10 parts of chloroprene rubber. The graphene composite damping rubber material disclosed by the invention has good elasticity, good fatigue resistance, low heat generation, small creep deformation, good adhesion to a metal part, cold resistance and excellent processability, and has relatively high economic value and good application prospects.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, and in particular relates to a graphene composite damping rubber material and a preparation method thereof. Background technique [0002] A variety of shock-absorbing rubber parts are used in automobiles, such as engine mounts, suspension bushings, and body shock absorbers. In automobiles, the shock-absorbing rubber parts are used in multiple vibration systems with different vibration frequencies, and usually play different roles according to different vibration characteristics. [0003] At present, the shock-absorbing materials used in domestic automobile shock-absorbing parts are mainly natural rubber. Although natural rubber has good resilience and excellent physical properties, it has poor ozone resistance and heat resistance. The maximum use temperature is only 100°C, and the long-term use temperature is 70°C. [0004] With the improvement of people's requirements for car comfort,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L11/00C08K13/06C08K9/04C08K3/22C08K3/04
CPCC08K2003/2296C08K2201/011C08K2201/014C08L7/00C08L2205/03C08L9/00C08L11/00C08K13/06C08K9/04C08K3/042C08K3/22C08K3/04
Inventor 李鹏王显妮张振华
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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