Porous easy-to-disperse multifunctional composite rubber auxiliary agent

A compound rubber and easy-to-disperse technology, applied in the field of rubber additives, can solve the problems of insufficient dispersion effect and reinforcing effect of carbon black, large difference in surface polarity between rubber and carbon black, easy self-aggregation of carbon black, etc. Polarity, improve carbon black properties, improve the effect of dispersibility

Pending Publication Date: 2022-05-03
江西华琪合成橡胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in tire rubber, if carbon black is directly mixed with rubber compound, due to the large difference in surface polarity between the compound and carbon black, its compatibility is poor, and carbon black is easy to self-polymerize during the rubber mixing process. , the dispersing effect and reinforcing effect of carbon black are not enough

Method used

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  • Porous easy-to-disperse multifunctional composite rubber auxiliary agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] At room temperature, add carbon black N330, hot-melt cast iron slag and isolated products with a particle size of less than 200 μm into the three-dimensional mixer at a mass ratio of 1:0.9:0.1, and then add 0.8 times the sum of hot-melted cast iron slag and isolated products Add the coupling agent TESPT into the mixer twice, add 70% of the mass of the coupling agent TESPT for the first time, turn on the mixer and mix for 12 minutes, then add the remaining 30% of the coupling agent TESPT again, and mix for another 15 minutes , to obtain the crude product of mixed particles;

[0018] Put the crude mixed particles into the rotary vacuum dryer, control the speed of the dryer to 20r / 10min, vacuum the inside of the dryer to -0.08MPa, control the temperature at 50°C, keep the above conditions for 0.5h, and then slowly vacuum to -0.05 MPa, while slowly raising the temperature to 80°C, controlling the heating and vacuuming time at 1.5h, and then maintaining the above conditions ...

Embodiment 2

[0021] At room temperature, add carbon black N330, hot-melt cast iron slag and isolated products with a particle size of less than 200 μm into the three-dimensional mixer at a mass ratio of 1:1:0.2, and then add 1 times the sum of hot-melted cast iron slag and isolated products Add the coupling agent TESPT into the mixer twice, add 70% of the mass of the coupling agent TESPT for the first time, turn on the mixer and mix for 12 minutes, then add the remaining 30% of the coupling agent TESPT again, and mix for another 15 minutes , to obtain the crude product of mixed particles;

[0022] Put the crude mixed particles into the rotary vacuum dryer, control the speed of the dryer to 30r / 10min, vacuumize the inside of the dryer to -0.07MPa, control the temperature at 55°C, keep the above conditions for 0.5h, and then slowly vacuum to -0.05 MPa, while slowly raising the temperature to 85°C, controlling the heating and vacuuming time at 1h, and then maintaining the above conditions for...

Embodiment 3

[0025] At room temperature, add carbon black N330, hot-melt cast iron slag and isolated products with a particle size of less than 200 μm into the three-dimensional mixer at a mass ratio of 1:0.8:0.15, and then add 0.9 times the sum of hot-melted cast iron slag and isolated products Add the coupling agent TESPT into the mixer twice, add 70% of the mass of the coupling agent TESPT for the first time, start the mixer and mix for 15 minutes, then add the remaining 30% of the coupling agent TESPT again, and mix for another 12 minutes , to obtain the crude product of mixed particles;

[0026] Put the crude mixed particles into the rotary vacuum dryer, control the speed of the dryer to 25r / 10min, vacuum the inside of the dryer to -0.07MPa, control the temperature at 55°C, keep the above conditions for 0.5h, and then slowly vacuum to -0.05 MPa, while slowly raising the temperature to 85°C, controlling the heating and vacuuming time at 1.5h, and then maintaining the above conditions f...

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Abstract

The invention discloses a porous easy-to-disperse multifunctional composite rubber auxiliary agent which is prepared by the following steps: adding carbon black, blast furnace slag and a separation product into a mixer at normal temperature, adding a silane coupling agent for multiple times until mixing to obtain a mixed particle crude product, adding the mixed particle crude product into a rotary vacuum dryer for drying, and controlling the drying conditions to obtain the porous easy-to-disperse multifunctional composite rubber auxiliary agent. The cooled reaction compound is added into a vibrating screen for vibration separation, fine particle products obtained through separation are target products, and large particle products obtained through separation are ground through a ball mill and then serve as raw materials to be added into a mixing machine to be reused; compared with common carbon black, the prepared rubber auxiliary agent has the advantages that the polarity of the surface of the carbon black is reduced, the dispersity of the carbon black in rubber mixing is improved, and meanwhile, the blast furnace slag is adopted to replace part of the carbon black, so that the performance of the carbon black is improved, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of rubber additives, in particular to a porous and easily dispersed multifunctional composite rubber additive. Background technique [0002] The organic end of the silane coupling agent molecule is an alkyl group, and the inorganic end is an alkoxy or acyloxy group. The substance has good lipophilicity and hydrophobicity, and also has a good binding ability to inorganic materials. The substance has a wide range of uses in waterproof coatings, powder surface modification treatment, and cultural relics protection. In the application of waterproof materials, long-chain alkyl silane coupling agents are generally used. The long-chain groups in silane coupling agents generally include octadecyl, hexadecyl, dodecyl, octyl, butyl, etc. base, isobutyl, propyl, etc. [0003] Carbon black is an aggregate with a specific structure formed by the aggregation of many near-nano-scale carbon black primary particles. The pr...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08K3/04C08K11/00
CPCC08K9/06C08K3/04C08K11/005
Inventor 缪百士缪绍光章亦军
Owner 江西华琪合成橡胶有限公司
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