Preparation method of novel white carbon black with high reinforcing capacity

A white carbon black and reinforcement technology, which is applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment, etc., can solve the problems affecting the comprehensive mechanical properties of vulcanized rubber, poor compatibility and dispersion, and poor reinforcement of white carbon black and other problems, to achieve good fuel saving, reduce agglomeration, and inhibit agglomeration

Pending Publication Date: 2021-01-12
江苏康祥实业集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are a large number of hydrophilic silanol groups on the surface of silica, which is easy to absorb water and aggregate, resulting in poor compatibility and dispersion in the polymer matrix, which greatly affects the comprehensive mechanical properties of vulcanized rubber and makes the reinforcement of silica poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The invention provides a technical solution: a method comprising the following steps:

[0034] A) Raw material preparation:

[0035] Step (1): Add solid sodium silicate and water into the caustic soda kettle, then feed steam into the soda caustic kettle, close the soda caustic kettle, and obtain a concentration of 2.0mol / L to 2.5mol / L after discharging the material. Water glass solution with a number of 2.5 to 3.5;

[0036] Step (2): 0.05-0.2 parts by weight of sodium hydroxide, 0.05-0.2 parts of sodium salicylate, and 5-10 parts of deionized water are uniformly mixed, and the mixture is added to a reaction kettle and stirred for 30 minutes to prepare a water-emulsion mixture;

[0037] Step (3): 10-25 parts by weight of natural rubber latex, 30-60 parts of divinylpyridine, 15-40 parts of natural rubber latex, 100-400 parts of deionized water, and 5-15 parts of ammonia water are made into deionized water;

[0038] B) slurry preparation:

[0039] Step (4): passing the ...

Embodiment 2

[0059] The difference between this embodiment and Embodiment 1 is that the drying is far-infrared drying, and the far-infrared drying is to use the far-infrared radiation emitted by the far-infrared radiation element to be absorbed by the heated substance to make its molecules and atoms vibrate. The temperature rises rapidly to drive liquid molecules such as water out of the material to achieve the purpose of drying.

Embodiment 3

[0061] The difference between this embodiment and Example 1 is: A) raw material preparation:

[0062] Step (1): Add solid sodium hydroxide and water into the caustic soda kettle, then pass steam into the soda caustic kettle, close the soda caustic kettle, and obtain water with a concentration of 2.0mol / L and a modulus of 3 after discharging glass solution;

[0063] Step (2): 0.12 parts by weight of sodium hydroxide, 0.1 parts of sodium salicylate, and 5 parts of deionized water were uniformly mixed, and the mixture was added to the reactor and stirred for 30 minutes to prepare a water-emulsion mixture;

[0064] Step (3): 15 parts by weight of natural rubber latex, divinylpyridine 40, natural rubber latex 15, deionized water 300, and ammonia water 12 are made into deionized water;

[0065] B) slurry preparation:

[0066] Step (4): passing the water glass solution obtained in the step (1) into a reactor, controlling the water content of the water glass solution to be 84%;

[...

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Abstract

The invention discloses a preparation method of novel white carbon black with high reinforcing capacity. The preparation method comprises the following steps: modifying water glass by using hexamethyldisilazane and polyethylene glycol so that the surface hydroxyl of the modified white carbon black is reduced, the surface is changed from hydrophilicity to hydrophobicity, the surface structure is looser, and the strength and wear resistance of the white carbon black are improved; by adding the surface modifier, white carbon black particles can be distributed more uniformly, agglomeration is reduced, the specific surface area and pore number of the white carbon black particles are increased, increase of the white carbon black particles can be inhibited, agglomeration of the white carbon blackparticles is inhibited, the surface of the prepared white carbon black ions is modified by using the deionized water and water emulsion mixture, because the specific surface area and the pore numberof the white carbon black particles are increased, the white carbon black particles can be in full contact with the modifier so that the surfaces of the white carbon black ions are fully modified, thereinforcing effect of the white carbon black is finally improved, the rolling resistance is reduced, better fuel oil is obtained, and the service life of the tread is prolonged.

Description

technical field [0001] The invention relates to the technical field of white carbon black production, and the specific field is a preparation method of a novel white carbon black with high reinforcing ability. Background technique [0002] White carbon black is nano silicon dioxide, the molecular formula is: SiO 2 ·nH 2 O, because its microstructure and aggregated form are similar to carbon black, and has similar reinforcing properties in rubber, it is called white carbon black. It has the advantages of low price, energy saving and environmental protection, good processing performance and the like. Applying silica to the tire tread can reduce the rolling resistance of the tire by about 30%, while maintaining good wet skid resistance and wear resistance. Therefore, in recent years, tire manufacturers have gradually used silica to replace carbon black. However, there are a large number of hydrophilic silanol groups on the surface of silica, which is easy to absorb water an...

Claims

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Application Information

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IPC IPC(8): C01B33/18C09C1/28C09C3/06C08K7/26C08K9/02C08K9/04C08K9/08
CPCC01B33/18C08K7/26C08K9/02C08K9/04C08K9/08C09C1/28C09C3/06C08L21/00
Inventor 朱雪松季成平刘仕通孙明于海洋
Owner 江苏康祥实业集团有限公司
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