Zinc Oxide In Rubber Processing supplier and manufacturer - China factory

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Zinc Oxide In Rubber Processing

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Half of industrially produced zinc oxide is used in rubber processing. The mixing of zinc oxide and stearic acid enhances the hardness of rubber. In addition to vulcanization, zinc oxide in rubber processing can improve the thermal conductivity, corrosion resistance and tear resistance of 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

The role of Zinc oxide in rubber processing in rubber:

1. Zinc oxide in rubber processing can improve the thermal conductivity, wear resistance, tear resistance, tensile strength and other indicators of the product in the rubber tire industry; thus, it helps the tires to dissipate heat and ensure driving safety. Zinc oxide additives also prevent the erosion of rubber by mold organisms or ultraviolet rays.

2. Zinc oxide in rubber processing functions in rubber products, synthetic rubber, natural rubber, natural latex: as an activator, vulcanization accelerator and reinforcing agent, and has a coloring effect. Promote the vulcanization, activation and reinforcement of rubber, anti-aging, and improve the corrosion resistance, tear resistance, elasticity and elongation of rubber products.

3. Zinc oxide in rubber processing acts as a colorant and filler in the white latex.

4. The role of zinc oxide in rubber processing in chloroprene rubber: as a vulcanizing agent and a compounding agent to increase thermal conductivity.

5. Zinc oxide in rubber processing is an essential inorganic activator in transparent rubber and food rubber products.

6. Zinc oxide in rubber processing has an irreplaceable role in transparent or colored rubber products such as carbon black and other traditional active agents.

The high quality and high purity of zinc oxide in rubber processing produced by MST ensures that zinc oxide has a more complete vulcanization and activation effect in rubber processing. It is an important additive in the production of rubber products.

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	—