CALCINED KAOLIN

RD-90 RC-90 TL-107 HA-90 DB-80 HA-90T JD-80A JD-80B

 

RD-90
(Active Alumina Silicate in Ruccer)

.Prodect's Application
RD-90(Superfine active aluminum silicate) is formed by particular rhermal tresment and surface prepsration. Its appearance is white super fine powder and Psrticle sixe is as fine as fine as submicron. Irs Phvalue is 6.0-7.0 and it can be ap plied in matural rubber, rubber polymer and colophony as white active filler. The rubber with RD-90 has high colorability, opacity and extrudability. The product has the same excellent excess weld property and abrasion resistance as carbon white. The rubber has advantages of good allround performance, electrical property and other properties of thermostability, acid and alkali resistance and chemical solvent resistance, and is a superior filler of tint rubber product as a substitution of carbon white. It's applied in various tint rubber products.

.Product's Properties

Item

RD-90

Test Method

Tensile at Break(MPA)

24.0min

GB528-82

Maximum Elongation(%)

500min

GB528-82

Tensile Modulus(MPA)

5.0min

GB528-82

Abrasion Value(cm3/1.61km)

0.8max

GB1689-82

Brightness(%)

90min

GB/t14564-93

.Typical Physical Properties

Appearance

White Super Fine Powder

Particle Size(-2m,%)

90min

Screen Residue(325 mesh, %)

0.02max

Bulk Density

330kg/m3

PH

6.0~7.0

Settling Volume (ml/g)

4.0min

.Typical Chemical Properties

SiO2(%)

Al2O3(%)

Fe2O3(%)

TiO2(%)

CaO(%)

522

452

0.50

1.5

0.4

MgO(%)

CuO(%)

K2O(%)

Na2O(%)

MnO(%)

0.2

0.004

0.05

0.15

0.004