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Rubber reinforcing agent and preparation method thereof

A rubber reinforcing agent and formula technology, applied in the field of rubber filling materials, can solve the problems of poor rubber elasticity and yield resistance, reinforcement level that cannot reach half-reinforcement carbon black reinforcement level, and high production cost

Active Publication Date: 2016-05-18
NINGHAI JIAHE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is usually divided into two types, one is carbon black, and the other is diatomaceous earth; although the former has a better reinforcement level, the production process is more complicated, the production process is more cumbersome, and the production cost is higher; while the latter, although the production process It is relatively simple and the production cost is relatively low, but diatomaceous earth needs to be naturally dried, which makes the production cycle longer, and the reinforcement level cannot reach the reinforcement level of semi-reinforcing carbon black, and the elasticity and buckling resistance of rubber after adding Relatively poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method for rubber reinforcing agent, it comprises the following steps:

[0019] 1) Calcining the silica at a temperature of 1000°C for 6 hours;

[0020] 2), sorting the calcined silica, the sorting standard is SiO 2 ≥95%;

[0021] 3), put the sorted silica into the jet mill for grinding, the particle size requirement is ≥2000 mesh;

[0022] 4), put the powder obtained in step 3) into the reactor, and add 4% silane coupling agent to stir, the temperature is 120°C, the reaction time is 8 minutes, keep stirring, the silane coupling agent is vinyl tri Ethoxysilane;

[0023] 5), then add 3.5% rare earth in the reaction kettle, the temperature is 120°C, the reaction time is 20 minutes, and it is kept stirring;

[0024] 6) After the powder in step 5) is cooled, the powder is filled to obtain the finished product.

Embodiment 2

[0026] A preparation method for rubber reinforcing agent, it comprises the following steps:

[0027] 1) Calcining the silica at a temperature of 1200°C for 5 hours;

[0028] 2), sorting the calcined silica, the sorting standard is SiO 2 ≥95%;

[0029] 3), put the sorted silica into the jet mill for grinding, the particle size requirement is ≥2000 mesh;

[0030] 4), put the powder obtained in step 3) into the reaction kettle, and add 3% silane coupling agent to stir, the temperature is 140°C, the reaction time is 6 minutes, keep stirring, the silane coupling agent is γ-formazan Acryloyloxypropyl-trimethoxysilane;

[0031] 5), then add 3% rare earth in the reaction kettle, the temperature is 140°C, the reaction time is 16 minutes, and it is kept stirring;

[0032] 6) After the powder in step 5) is cooled, the powder is filled to obtain the finished product.

Embodiment 3

[0034] A preparation method for rubber reinforcing agent, it comprises the following steps:

[0035] 1) Calcining the silica at a temperature of 1500°C for 2 hours;

[0036] 2), sorting the calcined silica, the sorting standard is SiO 2 ≥95%;

[0037] 3), put the sorted silica into the jet mill for grinding, the particle size requirement is ≥2000 mesh;

[0038] 4), put the powder obtained in step 3) into the reaction kettle, and add 2.5% silane coupling agent to stir, the temperature is 130°C, the reaction time is 4 minutes, keep stirring, the silane coupling agent is Si-69 ;

[0039] 5), then add 2% rare earth in the reaction kettle, the temperature is 130°C, the reaction time is 15 minutes, and it is kept stirring;

[0040] 6) After the powder in step 5) is cooled, the powder is filled to obtain the finished product.

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Abstract

A rubber reinforcing agent comprises the following ingredients, by weight, 2-4% of a silane coupling agent, 0.5-3.5% of rare earth, and the balance silica. A preparation method of the rubber reinforcing agent comprises the following steps: 1) calcining silica; 2) sorting based on the sorting standard SiO2 being greater than or equal to 95%; 3) milling with the requirement that granularity is greater than or equal to 2000 mesh; 4) adding the silane coupling agent and reacting for a certain time; 5) adding rare earth and reacting; 6) filling a powder after the powder obtained from the Step 5) is cooled so as to obtain a finished product. In comparison with the prior art, the preparation method has characteristics of simple production technology, relatively short production cycle and low production cost. The reinforcing level can reach reinforcing level of a semi-reinforcing carbon black, and elasticity and bending resistance of rubber after addition of the agent are good.

Description

technical field [0001] The invention belongs to the technical field of rubber filling materials, in particular to a rubber reinforcing agent and a preparation method thereof. Background technique [0002] At present, in rubber products, in order to achieve different mechanical strengths, it is necessary to add rubber reinforcing agents. It is usually divided into two types, one is carbon black, and the other is diatomaceous earth; although the former has a better reinforcement level, the production process is more complicated, the production process is more cumbersome, and the production cost is higher; while the latter, although the production process It is relatively simple and the production cost is relatively low, but diatomaceous earth needs to be naturally dried, which makes the production cycle longer, and the reinforcement level cannot reach the reinforcement level of semi-reinforcing carbon black, and the elasticity and buckling resistance of rubber after adding Fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K3/36C08K3/08C08L21/00
Inventor 王少雄
Owner NINGHAI JIAHE CHEM
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