[performance characteristics]
This product is a polydimethyl siloxane with a vinyl group at the two ends of the molecular chain. The molecular structure is as follows:
CH2= ch-si (CH3) 2O[(CH3)2SiO]n(CH3) 2si-ch =CH2.
The molecular weight is between 300 and 300,000 [the size of its molecular weight can be determined according to the user's needs]. Due to the above molecular structure, the higher the molecular weight of the product, the less the vinyl content; Conversely, the smaller the molecular weight, the more vinyl content. This product is an excellent and lively intermediate material. In addition to the general performance of methyl silicone oil (e.g., slippery, soft, bright, weather-resistant, etc.), this product has the following unique properties:
1. The vinyl of the two ends has a strong reaction activity, which can react with the rapid addition of hydrogen silicone oil (under the action of the catalyst); You can also participate in a variety of other reactions.
2. Compared with branched vinyl silicone oil, the molecule has no overhanging chain segment.
3. It has better compatibility with organic materials than methyl silicone oil, and it is easier to mix with other organic materials.
4. Other outstanding features.
[technical indicators]
Vinyl content % (W/W)
15
8
2.5
1
0.5
0.05
0.01
The molecular weight
About 1000
About 2000
About 6000
About 15000
About 103000
Viscosity of CP
About 10
About 20
About 100
About 400
About 700
About 20000
About 100000
appearance
Colorless or pale yellow transparent liquid.
[usage]
1. Used as adding material in the production of silicone rubber to enhance the strength and hardness of silicone rubber;
2. It is used to make liquid silicone rubber, which is the main material for injection thermoplastic silicone rubber.
3. This product reacts with polyurethane, acrylic acid and other organic materials to make new materials (such as coating, etc.) with superior performance (weather resistance, aging resistance, uv resistance, enhanced toughness, etc.).
4. Other USES.
[usage and dosage].
Used for feeding or modification of 5% ~ 10%, for the use of base glue 50% ~ 100%.
[precautions]
This product is a chemical active materials, shall not be mixed with impurities in the process of handling (especially catalyst), when use or compatibility, we should pay attention to other materials can cause the chemical reaction, in case of degeneration.
[storage and transport]
1. This product should be stored in a dry and ventilated place under normal temperature, not near the source of fire, avoiding sunlight exposure, and avoiding impurities (especially the catalyst and acid and alkali substances);
2. With 200 ㎏ iron drum or 50 ㎏ clean polyethylene plastic packaging
3. Storage and transportation of non-hazardous materials.