What is silicone sealant? What is the difference between neutral acid silicone sealant?

Silicone sealant is a paste made of polydimethylsiloxane as the main raw material, supplemented by crosslinking agent, filler, plasticizer, coupling agent, and catalyst in a vacuum state. It passes through at room temperature. Reacts with water in the air and solidifies to form elastic silicone rubber.

2. The main difference between silicone sealant and other organic sealants?

It has strong adhesion, high tensile strength, weather resistance, vibration resistance, moisture resistance, odor resistance, and adaptability to large changes in cold and heat. Coupled with its wider applicability, it can realize the adhesion between most building materials, which is the unique common characteristic of silicone sealant which is different from other general organic adhesive materials. This is due to the unique chemical molecular structure of the silicone sealant. The main chain of the Si—O bond is not easily damaged by ultraviolet rays. At the same time, the glass transition temperature of silicone rubber is much lower than that of ordinary organic materials. It can still maintain good elasticity under low temperature conditions (-50°C) without embrittlement or cracking, and it is not easy to soften and degrade under high temperature conditions (200°C). It can maintain stable performance in a wide temperature range. Silicone sealant also does not flow due to its own weight, so it can be used in the joints of overhead or side walls without sag, collapse or run away. These superior properties of silicone sealants are an important reason for its wide application in the construction field, and this property is also its advantage over other organic sealants.

type	Acid silicone sealant	Neutral silicone sealant
odor	Pungent smell	No pungent smell
Two-component	none	have
Scope of application	Corrosive. Cannot be used for metal, stone, coated glass, cement	Unlimited
Application scenarios	Kitchen, bathroom, floor gap, baseboard, etc.	Curtain wall, glass curtain wall, structural paste, etc.
Packing	cartridge、sausage	cartridge、sausage、drums
cartridge capacity	260ML 280ML 300ML
sausage capacity	none	590ML 600ML
drums	185/190/195 KG	275/300 KG
Curing speed	Acid silicone sealant cures faster than neutral silicone sealant
price	Under the same quality, neutral silicone sealant will be more expensive than acid silicone sealant

 

JUNBOND series of products:

1. 1.Acetoxy silicone sealant
2. 2.Neutral silicone sealant
3. 3.Anti-fungus silicone sealant
4. 4.Fire stop sealant
5. 5.Nail free sealant
6. 6.PU foam
7. 7.MS sealant
8. 8.Acrylic sealant
9. 9.PU sealant