Room Temperature Vulcanize Silicone Adhesive WR-703、WR-704、WR-705、WR-708

1.  Description:

Room temperature vulcanization silicon rubber series adhesives are one component, non-solvent RTV silicon rubber. The product after curing has good elasticity, good insulation sealing, and high temperature resistance properties.

2. Chemical composition

Ortho-hydroxy poly dimethyl siloxane, silicon series coupling agent 

 

3. Major chemical structure:

CH3

 |         

HO-[-Si-O-]n –H

|

CH3

4. Properties & Application

Name

WR-703

WR-704

WR-705

WL-705L

WR-706

WR-708

Appearance

Milky viscose liquid

Milky viscose liquid

Colorless transparent viscose liquid

Colorless transparent flowing liquid

Milky viscose liquid

White non-flowing liquid

Surface

Drying Time25°C

30min

30min

30min

30min

30min

30min

Tensile Strength

Kg/cm2

>12

>10

>5

>5

>20

>8

Temperature

Resistance

Range°C

-60~150

-60~250

-60~250

-60~250

-60~250

-60~200

Aging Resistance

Excellent

Excellent

Excellent

Excellent

Excellent

Excellent

Medium Resistance

Excellent

Excellent

Excellent

Excellent

Excellent

Excellent

Voltage Resistance

>16kv/mm

>14kv/mm

>15kv/mm

>15kv/mm

>14kv/mm

>14kv/mm

Application

Potting for wire cables, Water sealing for instruments, apparatus; Meter box adhesion; Sealing for electronic elements

Electric heating elements ends sealing, Electric plugs potting;

Adhesion and sealing for instrument and apparatus

Transmitter sealing; Potting for electric elements;

Electric joint moisture proof protection;

Silicon controlled surface protection

Transmitter sealing; Potting for electric elements;

Electric joint moisture proof protection;

Silicon controlled surface protection

Machine tool sealing;

Motorcycle magnetic cylinder adhesion

Refrigerator sealing;

Advertising Board adhesion;

Ship sealing;

Electric elements anti-vibration fixing

 

 

  Besides the above typical application, these series products also have excellent adhesion to all kinds of metal, glasses, cement, ceramics, plastics, nylon, cloths, and bamboo or wood products

5. Chemical Resistance Property

Days after

 Weight Change%

 Dipping liquid

1

7

30

City tap water

0.3

0.9

1.6

5%NaCl solution

0.2

0.7

1.5

10%NaOH solution

0.2

0.7

1.2

5%H2SO4

0.4

1.2

2.0

5%HCl solution

0.3

0.8

1.5

Kerosene

0.5

0.8

1.2

6.Application Method:

Dust and oil on the surface should be cleaned by using cloth rubbing or organic solvents, prior to use;

the adhesive needs to be uniformly coated on the applied surface or sealing ends and tightly connect together.

Air remained inside the tube should be squeezed out and the tube cap needs to be tightly closed to protect from adhesive curing.

7.7777.Storage and Transportation

1.The product belongs to non-dangerous material. It is non-toxic, non-corrosion, non-inflammable,.

Storage and transportation follow regular chemicals regulation. The storage period of time see packaging instruction.

2. Product kept tight sealing after use.

WR-70 Series RTV Silicon Rubber Gel is non-toxic, but has slightly irritation to skin and eyes.

Using gasoline etc. hydrocarbon solvents can clean non-cured silicon rubber.

8.Storage and Packaging:

1. One year shelf life stored at room temperature in sealing condition.

2.  45 or 110 grams in flexible metal tube.

 

*Remarks:

The above technical data are typical product data at 70% humidity and 25 degree C for customer reference only.

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