JIANGXI  KETE  FINE  POWDER   HANDLING  CO., LTD.
Product detail

Needle-like wollastonite powder

 

Brief

Processed quality fibrous wollastonite powder has a high Length-diameter ratio (15-20: 1) ; Since wollastonite has a fibrous, Needle-like structure, color is bright white, natural low iron, micro sulfur, phosphorus non-crystalline water, high Melting point, resistance to corrosion and aging, small thermal expansion coefficient, high refractive index, good reinforcement, sealing, heat resistance, wear resistance, good stability and other characteristics.

Product specification model, index items

Technical Index

Model

SiO2% ≤

47-49

CaO%≥

46-48

Fe2O3%≤

0.20

Al2O3 %≤

0.25

loss on ignition

≤3-5

Length-diameter ratio

10-15:1

Specific gravity

2.7-2.9

Mohs hardness

4.5-4.7

Refractive index

1.63

Melting point ℃

1540℃

Oil absorption capacity

≥25

Coefficient of thermal expansion

6.5*10-6

Appearance

White powder

Note: according to customer demand, we can produce Active Heavy calcium carbonate with different Whiteness, purity or fineness

Application fields

Widely used in the composite material (electronic components, packaging materials, high-performance rubber products, automotive housing, mold), paper, ceramics, building materials, rubber, plastics, paints, coatings, chemicals, welding, nylon, casting powder of metallurgy, as well as asbestos substitutes and other fields.

Functions

It can replace glass fiber, plant fiber, pulp fiber as reinforcement of polymer composite materials to improve material properties; play a role in weight gain and enhance reinforcement, and then reduce production costs. Needle-like wollastonite owns higher reinforcement than conventional silicon powder stone powder , as a framework structure in the product

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