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Method for preparing precipitated silicon dioxide for reinforcing industrial rubber roll rubber

A technology of precipitated silica and industrial glue, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve the problems of large surface energy, short service life, easy corrosion and aging, etc., and achieve enhanced uniform dispersion , Easy to operate, and the effect of improving performance

Active Publication Date: 2017-01-11
ANHUI LONGQUAN SILICON MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rubber on the existing industrial rubber rollers has the problems of poor wear resistance and high temperature resistance, is prone to corrosion and aging, and has poor mechanical strength and short service life.
Precipitated silica as a reinforcing agent can significantly improve the wear resistance, corrosion resistance and high temperature resistance of rubber, but precipitated silica is hydrophilic due to the presence of polysiloxane groups inside and a large number of hydroxyl groups on the outer surface. , the dispersion in the organic phase is poor, and the surface energy is large, which is easy to cause agglomeration

Method used

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Experimental program
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Embodiment Construction

[0014] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0015] (1) Preparation of precipitated silica: Add concentrated hydrochloric acid dropwise to the water glass solution with a mass concentration of 40% under stirring until the pH value of the solution is 5-6, mix well and microwave under microwave frequency 2450MHz and power 700W Treat for 5 minutes, and then ultrasonically treat for 30 minutes at an ultrasonic frequency of 40 kHz and a power of 50 W. After the ultrasonic treatment is completed, continue to treat with microwaves at a microwave frequency of 2450 MHz and a power of 700 W for 5 minutes, and then cool down the processed mixture at 10 °C / min in an ice-water bath. After the temperature drops to 0-5°C, keep it warm for 5 hours, filter, wash the obtained filter residue three times with wa...

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Abstract

The invention discloses a method for preparing the precipitated silicon dioxide for reinforcing industrial rubber roll rubber, and relates to the technical field of the precipitated silicon dioxide. The method comprises the steps of 1, preparing the precipitated silicon dioxide, and 2, modifying the precipitated silicon dioxide. Water glass and hydrochloric acid are used as raw materials for preparation of the precipitated silicon dioxide; by modification, the homogeneous dispersion degree of the precipitated silicon dioxide in organic phase is enhanced, and the reinforcing effect of the precipitated silicon dioxide is improved, thus the precipitated silicon dioxide can be used as a reinforcing agent to improve the use performance of the industrial rubber roll rubber. The whole operation of the preparation method is simple and easy, the preparation cost is low, and the preparation period is short.

Description

[0001] Technical field: [0002] The invention relates to the technical field of precipitated silica, in particular to a preparation method of precipitated silica for rubber reinforcement of industrial rubber rollers. [0003] Background technique: [0004] Existing industrial rubber rollers generally consist of a cylindrical metal core and rubber coated on the metal core. However, the rubber on the existing industrial rubber rollers has the problems of poor wear resistance and high temperature resistance, is prone to corrosion and aging, and has poor mechanical strength and short service life. Precipitated silica as a reinforcing agent can significantly improve the wear resistance, corrosion resistance and high temperature resistance of rubber, but precipitated silica is hydrophilic due to the presence of polysiloxane groups inside and a large number of hydroxyl groups on the outer surface. , the dispersibility in the organic phase is poor, and the surface energy is large, wh...

Claims

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Application Information

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IPC IPC(8): C01B33/193C09C1/28C09C3/08C09C3/04
CPCC01B33/193C09C1/28C09C3/006C09C3/04C09C3/08
Inventor 赵东旭汪树龙董珂连佩兵沈颂良
Owner ANHUI LONGQUAN SILICON MATERIAL