Filler, Long-Needle Surface Treated Wollastonite for Rubber and Plastic Industry

• Certification: ISO
• Technique: Surface Treated Wollastonite
• Application: Paper, Ceramic, Refractory, Rubber&Plastic
• Shape: Powder
• Customizaion: Available
• Color: Bright White
• Model NO.: WL920
• Odour: Odorlessness
• Environmental Protection: Comform with Regulation of RoHS Reach
• Whiteness (%): 88-92
• Refractive Index: 1.63
• pH Value: 9.9
• Transport Package: 25kgs/Bag; 1000/500kg/Bag
• Specification: SiO2
• Trademark: GreenThinking
• Origin: China
• HS Code: 2530909100
• Production Capacity: 12000 Ton /Year

Product Description

Description: WL920 is the product of Shanghai Powerflex New Materials Co., Ltd., which has been engaged in mineral modification research for many years. It is made of selected natural long-needle wollastonite and high-grade ore, which is refined by special silane activation and coating treatment.


Applications: 

• WL920 is produced through a strict internal quality control process, so that the products have uniform chemical purity, stable particle size distribution and good chemical activity, and become a widely used multi-functional filler.
• The products enjoy a good reputation in rubber, functional plastics, coatings, friction materials and other industries.

Key Benefits:

• Stable chemical composition and high whiteness;
• Covering various high-quality long-needle wollastonite products with unique mineral source and high length-diameter ratio;
• The PH value is close to neutral, the special silane treatment is carried out under the advanced production process, and the coating rate is high;
• In the rubber and plastic industry, it has good mechanical properties and wear resistance, such as strength, elongation, low pressure change, oil resistance, high resilience, etc.
• In industrial coatings, it improves corrosion resistance, chemical inertness, heat resistance, mechanical properties, reduced cracking and durability of use.

  

Physical properties of the product:

Test item	Test results
Whiteness	88-92
Particle size D50	3-5
Aspect ratio	2:1-3:1
Microstructure	Needle-like
Molecular weight	116
Specific gravity	2.85
Melting point	1540ºC
Refractive index	1.63
PH value	9.9
Coefficient of thermal expansion	6.5×10^-6

Chemical composition:

Chemical composition	Typical value
SiO2	48-52%
CaO	40-45%
Al2O3	≤0.5%
Fe2O3	≤0.25%
Moisture	≤0.3%

Packing: Cartons lined with PE bags, net weight 25 KG per carton; 1000 kg/pallet.
Storage: GreenThinking^® WL920 may be stored in its original unopened packaging at a temperature below 40°C for up to 36 months as from the date of manufacture.

 

 

Our factory:

Our testing equipment

 

 

Dlivery & Shipment:

FAQ:

Q: Are you a factory or trading company?
A: We are  rubber raw material manufacturer and owned 3 factories.

Q: Where is the loading port and How do you ship the goods?
A: Our factory is nearby Shanghai Port, but loading port can be negotiated. We could ship by sea, by air or by express(EMS, UPS, DHL, TNT, FEDEX and etc). Please confirm with us before placing orders.

Q: How can we guarantee the products' quality?
A: All the products must be tested refers to key specifications during the production and final inspection before shipment.
 
Q: What about the lead time?
A: It depends on the order quantity you place the order. Usually sample needs 5-8 working days, mass production needs 15-30 days .