With the rapid development of my country's industrial and construction industries, silicone sealant, as a new type of elastic sealing material that can be filled on site, bonded joints, and cured at room temperature, has become more and more widely used. Silicone sealant is composed of five main items: base polymer, cross-linking agent, filler, coupling agent, and plasticizer.

Silicone rubber refers to a rubber whose main chain is alternately composed of silicon and oxygen atoms, and the silicon atoms are usually connected with two organic groups. Ordinary silicone rubber is mainly composed of silicone chain links containing methyl groups and a small amount of vinyl groups. The introduction of phenyl groups can improve the high and low temperature resistance of silicone rubber, while the introduction of trifluoropropyl and cyano groups can improve the temperature resistance and oil resistance of silicone rubber. Silicone rubber has good low temperature resistance and can generally still work at -55°C. After the phenyl group is introduced, it can reach -73°C. The heat resistance of silicone rubber is also outstanding. It can work for a long time at 180°C, can withstand temperatures slightly higher than 200°C for several weeks or longer while still being elastic, and can instantly withstand high temperatures above 300°C. Silicone rubber has good air permeability, and its oxygen transmission rate is the highest among synthetic polymers. In addition, silicone rubber has the outstanding properties of being physiologically inert and not causing coagulation, so it is widely used in the medical field.

Amino-modified polydimethylsiloxane, also known as: bulky silicone oil. It is a silicone oil synthesized using special silane and linear body. In addition to retaining the original hydrophobicity and mold release properties of dimethyl silicone oil, amino silicone oil also has the presence of amino groups that can give it reactivity, adsorption, lubricity, softness and other properties and is widely used.

What is the synthesis process of silicone (polysiloxane)?Silicones (polysiloxanes) are widely used inorganic polymers containing silicon atoms. This category includes many other types of polymers, such as: polysilanes, polysilazanes, polycarbosilanes, and polyphenylenes. A more comprehensive study of structure-property relationships will be conducted. Different cross-linking densities produce silicones with different properties.

The application and contribution of silicone polymer materials to benefit mankind

The 2023 Shenzhen International Film & Tape Expo (FILM & TAPE EXPO 2023) was held at the Shenzhen International Convention and Exhibition Center (Baoan New Hall) from October 11 to 13 and achieved a successful display. At the same time, the Shenzhen International Full Touch and Display Exhibition, the Flexible Roll Material Processing Technology Exhibition, the Shenzhen International New Energy and Intelligent Connected Vehicle Industry Expo, and the Asian Electronic Production Equipment and Microelectronics Industry Exhibition will be held. In addition, it is worth mentioning that this exhibition will jointly organize the 10th China International Fluorosilicone Materials Industry and Application Exhibition with the China Fluorosilicone Organic Materials Industry Association to provide leading materials in cutting-edge fields from the source and fully empower the industrial chain. Our company Huangshan Qiangli Chemical Co., Ltd. also participated in this event as an exhibitor and achieved good results.

Silicone has become a representative of high technology mainly because of its importance and wide application in the field of electronic technology. First, silicon is a common semiconductor material. Semiconductor materials have conductive properties between conductors and insulators, and their conductive properties can be changed by controlling external conditions. Silicon has a wide band gap. The band gap is the energy difference between the forbidden band and the conduction band in the energy band. The width of the band gap determines the conductive properties of the semiconductor material. Silicon's moderate bandgap width gives it high flexibility and stability in electronic device manufacturing. By adding other elements, the conductive properties of silicon can be adjusted. For example, doping silicon can produce n-type and p-type semiconductors. This characteristic can be used to create a variety of different semiconductor devices.

Invite you to visit the 2023 China Fluorosilicon Exhibition and meet with you in Shenzhen from October 11th to 13th

Graphene composites for polydimethylsiloxane PDMS-wearable sensors

Chemically process inorganic silicon such as silica in nature to turn it into organic silicon such as polysiloxane, and it will become a new type of chemical material. With the development of science and technology, countries around the world have developed more than 20,000 silicone products. For example, actors’ makeup props, breast augmentation and plastic surgery, artificial fur coats, fruit preservation, etc.