Rubber for molding-MingYi

Standard grade fumed rubber for molding has good physical properties, yellowing resistance and good processability. They are applicable to molded products with requirement for high transparency. E.g., keypads, sanitary products and industrial miscellaneous parts such as O-rings and sealing gaskets.

Typical Properties:

Category

Item

Rubber for molding

MY D9130

MY D9140

MY D9150

MY D9160

MY D9170

MY D9180

MY D9190

Appearance

Transparent

Vulcanization

Hardness Shore A

30±2

40±2

50±2

60±2

70±2

80±2

86±2

Tensile strength MPa≥

8.0

8.5

8.0

6.0

Elongation at break %≥

700

600

500

400

300

200

120

Breaking set %≤

Tear strength B KN/m≥

Post-curing

Hardness Shore A

35±2

45±2

56±2

66±2

74±2

84±2

90±2

Tensile strength MPa≥

7.0

7.5

8.5

8.0

7.5

5.5

Elongation at break %≥

650

550

450

400

300

200

100

Tear strength B KN/m≥

Specific density 25°C g/cm³

1.07±0.04

1.13±0.04

1.15±0.04

1.18±0.04

1.22±0.04

1.25±0.04

1.26±0.04

Compression set 180*22h %≤

Resilience %≥

Dielectric strength kV/mm ≥

Volume resistivity Ω.cm≥

1.0 x 10¹⁵

Physical data in the above table is for reference only.

Vulcanization condition: 175℃× 5Min. Post-curing condition: 200℃ x 4h

Addition of curing agent: liquid 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane: 0.65%.

Advantage:

- Flexible processability

- Flexible comprehensive physical properties

- Good yellowing resistance

Applications:

- Used to manufacture silicone rubber products with requirement for high transparency, such as Keypads, sanitary products and O-rings

Packing & Storage:

- 20kg/ carton lined with plastic bags or sheets.

- The products have a shelf life of 9 months from date of manufacture depending on the shore hardness if stored at room temperature in the originally sealed container.