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The main raw material of glass glue, how much do you know?

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Glass glue, the most commonly used adhesive, is one of the necessary materials for decoration.

Sealant can be divided into silicone sealant, polyurethane sealant, polysulfide sealant, etc. We generally say that glass sealant refers to silicone sealant.

The main component of the silicone sealant is sodium silicate (Na2O·mSiO2) and acetic acid and organic silicone.
Sodium silicate is easily soluble in water and has viscosity. It is also called water glass in the south and soda ash in the north. Silicone is commonly known as silicone oil or dimethyl silicone oil.

Silicone polymers are very stable to heat and chemicals and are not wetted by water.

Depending on the degree of polymerization and the complexity of the molecule, the polymer has the form of oil, grease, rubbery material and resin. This is also the reason why the glass glue has waterproof, mildew and moisture resistance after curing.
Due to the different ingredients, the glass glue is also good or bad. Please pay attention to the following performance when purchasing:

1. the breaking strength (stretching force / cross-sectional area);

2. the bonding strength (stretching force / bonding area, except for substrate damage);

3. the elongation at break (length when pulled off / original length);

4. anti-aging ability;

5. Appearance (matiness, particles, bubbles);

6. shape retention (not drawing, the facade does not sag);

7. Shelf life;

8. curing time.

In general, the performance corresponds to the price, and the performance is also expensive. According to the sizing environment, the substrate or the like can be selected as a suitable glass glue.

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