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HOME >> PRODUCT >>Vapor phase hydrophobic silica >> Vapor phase hydrophobic silica H-200S
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Vapor phase hydrophobic silica H-200S

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10000
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产品编号 H-200S
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Vapor phase white carbon black, Molecular formula: SiO2. White fluffy powder, porous, non-toxic, tasteless, pollution-free, high temperature resistant. At the same time, 

its chemical inertia and special thixotropic properties significantly improve the tensile strength, tear resistance and wear resistance of rubber products. 

The strength of the modified rubber is improved by vapor phase white carbon black, Molecular formula: SiO2. White fluffy powder foam, porous, 

non-toxic, tasteless, pollution-free, high temperature resistant. At the same time, its chemical inertia and special thixotropic properties significantly improve the tensile strength, 

tear resistance and wear resistance of rubber products. The strength of rubber products after improvement is increased by dozens of times. 

Rheology and Thixotropy control of liquid systems, adhesives, polymers, etc., additives used for anti sedimentation, thickening, anti sagging, 

reinforcement of HCR and RTV-2K silicone rubber, adjustment of free flow and improvement of powder properties as anti caking agent, etc.


Hydrophobic fumed silica is prepared by chemical reaction between hydrophilic fumed silica and active silane (such as Chlorosilane or hexamethyldisilane). 

It has hydrophobicity (hydrophobicity) and cannot be dispersed in water. In order to solve some special technical problems in industry, 

various types of hydrophobic fumed silica have been developed. For example, hydrophobic vapor phase white carbon black is produced by treating hydrophilic vapor 

phase white carbon black with silane or siloxane. In the final product, the chemical treatment agent is bound to the original hydrophilic oxide by Chemical bond. 

In addition to the above advantages of hydrophilic products, the characteristics of hydrophobic fumed silica products are: low moisture absorption, good dispersibility, 

and rheological adjustment ability even for polar systems. Some products undergo structural modification on the basis of hydrophobic treatment, 

which can provide further assistance for customers to develop new products and improve their performance. For example, in a liquid system, 

hydrophobic gas-phase silica can achieve high addition levels, with little effect on the viscosity of the system.


The function of hydrophobic fumed silica: the most suitable rheological properties for processing and use; Thickening of polar liquids, such as epoxy resin; 

Reinforcement of silicone elastomers; High dosage, such as in molded products; Good hydrophobicity, improving corrosion resistance; Improve dielectric properties, 

such as in cable composites; Powder flow aids, such as in powder coatings and fire extinguishing agents; Improve scratch resistance in coatings and plastics.





Characteristics of fumed silica:


◇ As a thixotropic and thickening agent for liquids, it prevents sedimentation and sagging;


◇ Improve the suspension and dispersion of pigment fillers in liquid systems;


◇ Used as a dispersant and grinding aid;


◇ Improve the corrosion resistance of coatings;


◇ Improve powder flowability and storage stability;


◇ Improve the powder charge capacity and charge stability;


◇ Improve water resistance;


◇ Improve the scratch resistance of the paint film;


◇ Improve the brightness of colors;


◇ Fixed special effects;


◇ Improve the physical and mechanical properties of the paint film;


◇ Improve the adhesion and flexibility of the paint film;


◇ Improve the viscoelastic properties of rubber and elastomers, and reinforce them;


◇ The defoaming effect of defoamers;


◇ Improve the surface hardness and scratch resistance of the coating;


◇ Prevent adhesion in thin films and elastomers;


◇ As an adsorbent and carrier;


◇ Used for inkjet printing coatings;


◇ As an advanced filling material for dentistry;


◇ As a catalyst carrier, it has remarkable Thermal insulation, and is used for low temperature and high temperature insulation.


Technical indicators


          

指标

单位

H-200S

比表面积

㎡/g

200±20

悬浮液PH值4%


3.6~4.8

干燥减量105℃

m/m%

≤1.5

灼烧减量1000℃

m/m%

≤2.5

筛余物45um

m/m%

≤0.05

表观密度

g/L

25~60

二氧化硅含量

m/m%

≥99.8

碳含量(C)

m/m%

≤0.2

二氧化铁含量

m/m%

≤0.003

三氧化二铝含量

m/m%

≤0.05

二氧化钛含量

m/m%

≤0.03

氯化物质量分数

m/m%

≤0.025

                中位粒径     nm (D50)

 14nm



Gaseous silica, commonly known as "nano silica", is widely used in various industries as an additive, catalyst carrier, petrochemical industry, decolorization agent, extinction agent, rubber reinforcement agent, plastic filling agent, ink thickener, metal soft polishing agent, insulation and insulation filling agent, advanced daily cosmetics filling and spraying materials, medicine, environmental protection, and other fields. And it provides a new material foundation and technical guarantee for the development of related industrial fields. Due to its unique functions in magnetism, catalysis, light absorption, thermal resistance, and melting point compared to conventional materials, it has received great attention from people.

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Shandong Lihua New Materials Co., Ltd

MAIL:2935531631@qq.com

FAX:0635-4240358

ADD:500 meters south of Zhaoshi Village, Dulang, Chiping District, Liaocheng, Shandong Province


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