Zinc oxide powder for rubber supplier and manufacturer - China factory

Product Description

Zinc oxide powder for rubber

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Zinc oxide powder for rubber is an active agent of natural rubber latex, which can be used as a reinforcing agent and coloring agent. It is the most important inorganic active agent in the rubber industry. The addition of rubber compounds can not only speed up the vulcanization speed, but also increase the degree of crosslinking. The Zinc oxide powder for rubber produced by MST has high purity and stable performance, and is widely used in rubber.

Product name	Zinc oxide	Molecular formula	ZnO
CAS NO	1314-13-2	EINECS NO	215-222-5
Density	5.606g/cm3	Molecular weight	81.38
Melting point	1975℃	Boiling Point:	2360ºC
Purity	0.99	Active substance content	0.997
H.S CODE	2817001000	Appearance	White powder or crystal

Standard:《GB/T3185-2016》
Item	Type1	Type2	Type3
Zinc oxide（Zn0 calculating as dry materia)%≥	99.7	99.7	99.5
Metal content（as Zn)%≤	none	none	0.008
Insoluble Matter in Hci % ≤	0.006	0.008	0.03
Loss on ignition %≤	0.2	0.2	0.25
Residue on sieve (45um)%≤	0.1	0.15	0.2
Water soluble matter %≤	0.1	0.1	0.15
Volatile matter in 105℃%≤	0.3	0.4	0.5
Lead(pb）%≤	0.008	0.05	0.1
Copper(Cu)% ≤	0.0002	0.0004	0.0007
Manganese（Mn）%	0.0001	0.0001	0.0003
Cadmium (Cd）%	0.002	0.005	0.01
Iron (Fe）%	0.005	0.01	—

Why test the purity of Zinc oxide powder for rubber? How does purity affect rubber?

If the Zinc oxide powder for rubber added in the production of rubber contains a certain amount of impurities, it will affect the performance of the rubber:

1) The high content of iron, lead and copper in the Zinc oxide powder for rubber added to the rubber compound will cause the rubber product to change color;

2) The Zinc oxide powder for rubber added to the rubber contains cadmium to prevent the activation of zinc oxide on certain accelerators.

3) The Zinc oxide powder for rubber added to the compound contains copper and manganese which will damage the aging performance of rubber products.

4) The purity of Zinc oxide powder for rubber added to the rubber compound is not enough, and it also affects the degree of rubber vulcanization;

Therefore, testing the purity of Zinc oxide powder for rubber is a very meaningful analysis item, and it is also very important in rubber production;

The high-purity indirect method Zinc oxide powder for rubber produced by MST uses strict materials, selects "No. 0" refined zinc from top domestic metallurgical companies, and adopts the most advanced production technology and the best testing methods. The quality management system has passed ISO9001 certification. The Zinc oxide powder for rubber produced is of high purity, and its indicators are superior to domestic and international advanced standards. It can also meet the special requirements of users and can be customized upon invitation.