A kind of preparation method of highly dispersible silicon dioxide

A silica, high dispersibility technology, applied in the treatment of dyed polymer organic compounds, fibrous fillers, etc., can solve the problem of tear strength, elongation at break, low tear strength, high abrasion and heat generation of rubber products , the original particle size of silica is large, etc., to achieve the effect of improving dispersibility, reducing wear and heat generation, and enhancing tear strength
CN103468030BActive Publication Date: 2016-05-18QUECHEN SILICON CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QUECHEN SILICON CHEM
Publication Date
2016-05-18

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Abstract

The invention provides a preparation method of high-dispersity silicon dioxide, which comprises the following steps that sulfuric acid and a sodium silicate solution react to generate silicon dioxide pulp; the silicon dioxide pulp is filtered; a filtered matter is obtained; the filtered matter is pulpified; silicon dioxide pulp liquid is obtained, wherein a macromolecular active agent is added to the silicon dioxide pulp liquid; and the silicon dioxide pulp liquid is dried. The particle size of silicon dioxide particles prepared by utilizing a production technology of silicon dioxide is appropriate; the dispersity of silicon dioxide is high when silicon dioxide is mixed with rubber; and when silicon dioxide serves as a reinforcing material, abrasion and heat generation of a rubber product can be reduced obviously, and the tensile strength at break, the elongation at break and the tearing strength of the rubber product can be improved significantly.
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Description

technical field

[0001] The invention relates to the technical field of chemical production, in particular to a method for preparing highly dispersible silicon dioxide. Background technique

[0002] Hydrated silica is commonly known as white carbon black, and its molecular formula is SiO 2 ·nH 2 O, the appearance is powdery, microbead, granular, and silica is a widely used material for rubber reinforcement. Generally speaking, the reinforcing effect of silica (except for ultrafine and surface treatment) is not as good as that of carbon Black is good, so it is a semi-reinforcing filling material. Therefore, the percentage of replacing carbon black should be determined according to the application occasion. Precipitated silica is used in rubber products such as inner and outer tires of automobiles, dump trucks, trucks, tractors, forklifts, bicycles, etc., industrial belts, hoses, gaskets, rubber sheets, threshing rubber rollers for grain processing, and rubber shoes. Silica...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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