High-Elasticity Industrial Soft Composite Silica Powder for Sealant Applications

• Customization: Available
• Certification: ISO
• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass
• Model NO.: SR
• Mohs Hardness: 5
• Transport Package: Paper Bag, Big Bag, Pallet
• Specification: SiO2 60%± 3
• Trademark: ST
• Origin: Lianyungang, China
• HS Code: 2811229000
• Production Capacity: 50000pieces/Year

Product Description

product information:

Product Overview

This product is an eco-friendly soft composite silica micro-powder additive specially designed for high-performance industrial coatings. Manufactured using organic silicon modification technology and inorganic nanomaterial compounding processes, it combines environmental friendliness, flexibility, and functionality. It significantly enhances coating wear resistance, adhesion, and weather resistance while reducing VOC emissions, making it suitable for coatings in industrial anti-corrosion, automotive, construction, and flexible electronic devices.

 

Key Advantages

 

 Eco-Friendly & Non-Toxic: Lead-free, cadmium-free, halogen-free, compliant with RoHS/REACH standards, and produced with zero harmful solvent emissions.
 Enhanced Flexibility: Increases coating flexural strength by 30% and impact resistance by 50%.
 Weather & Aging Resistance: UV-resistant, salt spray-resistant (1,000 hours without peeling), extending coating service life.
 High Compatibility: Perfectly compatible with common resin systems such as epoxy, polyurethane, and acrylic.
 Low-Temperature Stability: Maintains flexibility in extreme temperatures (-40°C to 200°C) without brittleness or cracking.

 

Typical Applications

✓ Automotive Seals: Door/window seals, O-rings
✓ Construction Sealants: Curtain wall joints, expansion joints
✓ Electronic Encapsulation: Waterproof/dustproof sealing
✓ Industrial Seals: Pipe flanges, valve seals
✓ Food Machinery: Food-grade gaskets
 

Product Advantages

Nano-coating technology ensures perfect elastomer integration
Professional sealing solutions for enhanced reliability
Customizable particle size and surface properties
Free samples and technical support available

Basic Parameters
 

Item	Unit	Typical Values
Exterior	/	white powder
Density	kg/m³	2.58 ×10^3
Moh's hardness	/	5
Coefficient of linear expansion	1/k	0.8×10^-6
Pyroconductivity	w/k.m	0.8
Refraction coefficient	/	/

  1, content: Silica content 60%±%
2,grain fineness distribution:  D50(0.5μm-50μm)       customization

Company Information:

Jiangsu Shengtian New Materials Co., Ltd. has a technical research and development team focusing on ultra-fine powder materials, and has strong strength in the research and development and production of ultra-fine functional materials, composite materials and related applications, and has become a more influential high-tech enterprise in the ultra-fine functional powder industry.
The company's products include crystalline silicon powder, molten silicon powder, soft composite silicon powder, spherical silicon powder, aluminum oxide powder, ceramic powder, glass powder and other ten categories, nearly 100 kinds of different specifications of products, and has a strong modification, compounding and other follow-up deep processing technology and capabilities. The products are processed by special technology, the production technology is leading and innovative, and the introduction of international technical standards for similar products, widely used in electronic packaging, copper clad plate, ink coating, adhesive, ceramics, precision casting, glass fiber, plastic rubber and other industries, giving its functionality while helping customers reduce costs. And provide the overall application of technology solutions.
The company has more than 20 different types of production lines, more than 100 sets of domestic advanced equipment, with an annual output of 50,000 tons. The company adopts professional production and testing equipment and formulates strict production quality control system to conduct all-round control of product quality. All products of the company have passed SGS environmental protection testing, in line with the EU ROHS green environmental protection standards. The company took the lead in the silicon powder industry through the ISO9001 quality management system certification and ISO14001 environmental management system certification, has passed the high-tech product identification. The company's products and solutions have been applied to more than 160 enterprises around the world, including more than 80 customers with stable cooperation for more than 10 years.

Workshop:
 

An excellent manufacturing enterprise

The company has 20 patents, the company has passed ISO9001 and ISO14001 certification, and has been recognized as a national high-tech enterprise