Jinsha Precipitated Silica Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of precipitated silica (sio2) for food grade silicone rubber products in China. With abundant experience, we warmly welcome you to buy high quality products made in China here from our factory. Contact us for more details.
Precipitated Silica (SiO2) for Food Grade Silicone Rubber Products
Precipitated silica plays a vital role in the manufacturing of food-grade silicone rubber products. This white, odorless, and tasteless powder is obtained by reacting sodium silicate solution with mineral acid under controlled conditions. The resulting product has a high purity and a controlled particle size distribution, making it ideal for various applications in the food industry.
One of the primary uses of precipitated silica in food-grade silicone rubber products is as a reinforcement filler. It enhances the strength, elasticity, and tear resistance of the rubber, making it more durable and long-lasting. This property is particularly useful for food processing and packaging equipment, such as seals, gaskets, tubes, and hoses, which are subject to high pressure and temperature.
Precipitated silica also acts as a flow aid and anti-caking agent in the production of food-grade silicone rubber. It improves the free-flowing characteristics of the rubber, making it easier to process and mold into various shapes. Moreover, it reduces the tendency of the rubber to form lumps or clumps, ensuring a smooth and homogeneous texture.
Additionally, precipitated silica has excellent water-absorption and moisture-retention properties. This property makes it an ideal desiccant for food packaging applications, preventing moisture migration and increasing the shelf life of the product. It can also act as a carrier for various food additives, such as flavorings, colorants, and enzymes, enhancing their stability and bioavailability.
Specification:
Food grade Silica For Silicone Rubber
Specification:
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Material: |
Precipitated Silica |
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Item No.: |
JS-160(96) |
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Test Methods |
Properties |
Units |
Target Values (Spec Limits) |
Actual Values |
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GB25576-2010 |
Loss on drying (2Hrs,105℃)加热减量 |
% |
Max.5.0 |
4.48 |
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GB25576-2010 |
Ignition loss 1000℃ 灼烧减量 |
% |
Max.7.0 |
3.81 |
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GB25576-2010 |
SiO2 (Dry Basis) 二氧化硅(干基） |
% |
Min.96 |
98.5 |
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GB25576-2010 |
Content of Pb 铅含量 |
mg/kg |
Max.5.0 |
0.8 |
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GB25576-2010 |
Content of heavy metal 重金属含量 |
mg/kg |
Max.30 |
＜30 |
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GB25576-2010 |
Content of As 砷含量 |
mg/kg |
Max.3.0 |
0.2 |
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GB25576-2010 |
Soluble salt (Na2SO4) 可溶性盐 |
% |
Max.4.0 |
0.3 |
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HG/T3067-2008 |
pH value (10%aqueous suspension) pH值 |
— |
6.0-8.0 |
6.7 |
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HG/T3072-2008 |
DBP absorption value DBP吸收值 |
cm3/g |
2.3-2.6 |
2.45 |
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conclusion结论 |
This batch of product is qualified |
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Audit 审核 |
Analysis 分析人 |
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Packaging:20kgs per PP bag,18MT/40HQ unpalletized,14MT/40HQ palletized.
MOQ:1*40HQ
Delivery Time:15days after receipt of your payment.
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