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White carbon black rubber reinforcer and preparation method thereof

A technology of rubber reinforcing agent and white carbon black, which is applied in the field of rubber reinforcing agent, can solve the problems of no high-dispersion product process exploration, etc., achieve good performance and shorten the time

Active Publication Date: 2013-01-16
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods involving the reaction of carbon dioxide and sodium silicate are not technologically explored for highly dispersed products

Method used

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  • White carbon black rubber reinforcer and preparation method thereof
  • White carbon black rubber reinforcer and preparation method thereof
  • White carbon black rubber reinforcer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Drugs: sodium silicate nonahydrate (product of Sinopharm Chemical Reagent Co., Ltd., AR), absolute ethanol (product of Sinopharm Chemical Reagent Co., Ltd., AR), carbon dioxide (product of Xiamen Xinhongli Industrial Co., Ltd., purity>98%) .

[0050] see figure 1 , figure 2 , image 3 , Figure 8 with Figure 9 , Weigh the solid sodium silicate and dissolve it in a certain amount of water, heat to promote dissolution, after all the solid sodium silicate is dissolved, cool to room temperature, filter to remove insoluble impurities, continue to add water, and configure the concentration of 1.0mol / L The water glass solution is pumped into the water glass solution storage tank for subsequent use. The water glass solution is pumped into a pressurized carbonization reaction kettle, and a surfactant (sodium dodecylsulfonate, by mass percentage, the surfactant is 0.2% of an aqueous solution of sodium silicate) and a silane coupling agent ( Bis[(triethoxysilyl)-propyl]tet...

Embodiment 2

[0052] Drugs: sodium silicate nonahydrate (product of Sinopharm Chemical Reagent Co., Ltd., AR), absolute ethanol (product of Sinopharm Chemical Reagent Co., Ltd., AR), carbon dioxide (product of Xiamen Xinhongli Industrial Co., Ltd., purity>98%) .

[0053] see figure 1 , Figure 4 , Figure 5 , Figure 10 with Figure 11 , weigh the solid sodium silicate and dissolve it in a certain amount of deionized water, heat to promote dissolution, after all the solid sodium silicate is dissolved in deionized water, cool to room temperature, filter to remove insoluble impurities, continue to add deionized water, configure Become the water glass solution that concentration is 1.0mol / L, pump into the water glass solution storage tank for subsequent use. The water glass solution is pumped into a pressurized carbonization reaction kettle, and a surfactant (sodium dodecylsulfonate, by mass percentage, the surfactant is 0.3% of an aqueous solution of sodium silicate) and a silane coupling ...

Embodiment 3

[0055] Drugs: sodium silicate nonahydrate (product of Sinopharm Chemical Reagent Co., Ltd., AR), absolute ethanol (product of Sinopharm Chemical Reagent Co., Ltd., AR), carbon dioxide (product of Xiamen Xinhongli Industrial Co., Ltd., purity>98%) .

[0056] see figure 1 , Image 6 , Figure 7 , Figure 12 with Figure 13 , weigh the solid sodium silicate and dissolve it in a certain amount of deionized water, heat to promote dissolution, after all the solid sodium silicate is dissolved in deionized water, cool to room temperature, filter to remove insoluble impurities, continue to add deionized water, configure Become the water glass solution that concentration is 0.5mol / L, pump into the water glass solution storage tank for subsequent use. The water glass solution is pumped into a pressurized carbonization reaction kettle, and a surfactant (sodium dodecylsulfonate, by mass percentage, the surfactant is 0.3% of an aqueous solution of sodium silicate) and a silane coupling...

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Abstract

The invention relates to white carbon black rubber reinforcer and a preparation method thereof, and relates to rubber reinforcers. The white carbon black rubber reinforcer is white carbon black powder. By weight percent, nanoparticles in the white carbon black powder account for more than 80% of the total white carbon black powder. The preparation method includes: adding sodium silicate solution into a reactor, adding surfactant and silane coupling agent, heating, preheating carbon dioxide by a preheater, and adding the preheated carbon dioxide in the reactor for reaction to obtain reaction liquid; relieving the reactor to normal pressure, transferring the reaction liquid in the reactor to an ageing tank, and allowing for ageing to obtain aged slurry; rinsing and filtering the aged slurry, subjecting the aged slurry to solid-liquid separation to obtain filter cakes, washing the filer cakes, adding water to make slurry, adding sulfuric acid solution for acidification to keep pH of the acidified slurry at 3-7, continuing to filter and rinse until detected filtrate of saturated barium hydroxide solution has no precipitation, making the rinsed filter cakes into slurry, and drying the slurry to obtain the white carbon black rubber reinforcer.

Description

technical field [0001] The invention relates to a rubber reinforcing agent, in particular to a white carbon black rubber reinforcing agent and a preparation method thereof. Background technique [0002] Silica is hydrated silica, which has good dispersibility, reinforcement, matting, thickening, etc., so it is widely used in rubber, plastics, coatings, papermaking, ink, daily chemical industry and other industries. One of the hottest products in the chemical industry. As an important reinforcing agent in the rubber industry, silica has a large specific surface area, small particle size, and more free hydroxyl groups on the surface. These free hydroxyl groups can form physical or chemical bonds with rubber molecules to achieve the reinforcing effect. In the past ten years, due to the increasingly stringent requirements for environmental protection and energy saving in Europe and North America, the use of white carbon black in tire treads can significantly reduce the rolling ...

Claims

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Application Information

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IPC IPC(8): C08K3/36C08L21/00C01B33/12
Inventor 李军庄艺伟祝宝胡晓慧王宏涛苏玉忠洪艳珍
Owner XIAMEN UNIV
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