Different kinds and characteristics of silicone sealant

1.Summary of silicone sealant

Silicone sealant is a salt-like material that solidifies into a tough rubber-like solid when it comes into contact with moisture in the air. Silicone sealant is commonly known as glass cement because it is often used for bonding and sealing of glass. Silicone sealant has strong adhesive force, large tensile strength, and the characteristics of weather resistance, vibration resistance, moisture resistance, mildew resistance and adaptability to hot and cold changes. It is widely applicable and can realize the bonding between most building materials products, so the application value is very large. According to their properties, they are mainly divided into three kinds: acid silicone sealant, neutral silicone sealant and alcohol silicone sealant.

2.Three different silicone sealant and characteristics

(1) Acid silicone sealant

Acid silicone sealant has the characteristics of rapid surface drying and ‌ no glue flow, and it has good elasticity and adhesion. It is suitable for a wide range of climatic conditions ‌ and shows excellent weather resistance and strong resistance to UV, ‌ snow, ‌ air pollution and other natural erosion. However, ‌ it is not suitable for structural glass assembly, such as bonding ceramics, ‌marble and other materials. ‌‌Acid silicone sealant has good adhesion to most building materials such as glass, ‌ aluminum, ‌PVC granite and so on. It has fast curing, high bonding strength and good weather resistance. After construction, it can quickly reach the use strength and improve the construction efficiency, which plays an important role in the construction, decoration and industrial fields.

Features:

1. High transparent, does not change colororyellow

2. Low shrinkage after curing

3. Rapidly solidified surface not sticky

4. Long storage lifewithout adhesive change

5. Excellent adhesion to glass, glaze, porcelain tile, aluminum alloy, a variety of plastics and most coating materials.

(2) Neutral silicone sealant

Neutral silicone sealant overcomes the characteristics of acid silicone sealant corrosion metal materials and reaction with alkaline materials, so the scope of application is wider than acid silicone sealant. Neutral silicone sealant has good bonding strength and sealing performance for most materials. Excellent electrical insulation performance, moisture-proof, mildew proof, and shock absorption buffer and it has good high and low temperature resistance, excellent outdoor aging resistance, and its service life can reach 20 to 30 years. No yellowing, no oil seepage, excellent overall performance.

Features:

1. Can be used for sealing and bonding

2. Storage life long

3. No corrosive

4. Short dryingtime

5. In low and high temperature environment remains long flexible

6. Excellent weather resistance.

(3) Alcohol silicone sealant

Alcohol silicone sealant is a kind of environmentally friendly and non-corrosive to copper-containing metals silicone rubber, ‌ has good adhesion and short shelf life. ‌ alcohol silicone sealant is widely used in many fields for its environmental protection, ‌ non-corrosion to copper-containing metals, ‌ good adhesion and fast curing speed under certain conditions.

Features:

1. Healthy andenvironmental protection

2. For metal material completely non-corrosive

3. Wider modulus adjustment range, more suitable for more use environment

4. The long-term adhesive properties of the plastic substrate lasting

5. Transparent products yellowing resistant ability