The following matters should be paid attention to when using silica gel:
One, special tools:
The mixing tank sealant container and stirring apparatus should be dedicated, and other materials should not be stirred prior to use. The container can be made of PP, PE plastic bucket, ceramic, stainless steel, etc. Mixing equipment is optional, stainless steel, hard plastic rod, bamboo pole, stick can be.
Two, curing need to prevent interference:
Certain materials, chemicals, hardeners, and plasticizers can inhibit the solidification of gels. These should be noted:
1, organic tin and silicone rubber containing organic tin;
2, sulfur, polysulfide compounds or sulfur containing articles;
3, amine, polyurethane rubber or articles containing ammonia;
4. Phosphorous or phosphorous containing articles; Acid substances (organic acids);
5. Flux residue; If it is used in the aluminum alloy liquid tank seal of hePA filter, there will be no problems in the above aspects;
Three, indicators:
Blue pigment in the glue has no special function, should not be added; However, in the actual mixing of the glue, it is wrong to repeat the same work mechanically for a long time, so blue pigment is added to one of the components as an indicator. It is used to distinguish A and B components, remind users to avoid mistakes, and convenient to observe whether A place has been filled with glue (because the silica gel is colorless and transparent). For a long time, a small amount of blue pigment in component B will sink to the bottom, which will not affect the curing and sealing effect of colloid. Continue to use after mixing.