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.

Definition of silicone Organosilicon, that is, organosilicon compounds, refers to compounds that contain Si-C bonds and at least one organic group is directly connected to the silicon atom. It is customary to refer to those compounds that connect the organic group to the silicon atom through oxygen, sulfur, nitrogen, etc. The linked compounds are also referred to as organosilicon compounds. Among them, polysiloxane, which is composed of silicon-oxygen bonds (-Si-O-Si-) as the skeleton, is the most numerous, most deeply researched, and most widely used type of organosilicon compounds, accounting for more than 90% of the total usage. . Silicone materials have a unique structure: (1) Sufficient methyl groups on Si atoms shield the high-energy polysiloxane main chain; (2) C-H is non-polar, making the intermolecular interaction very weak; (3) The Si-O bond length is longer and the Si-O-Si bond angle is large. (4) Si-O bonds are covalent bonds with 50% ionic bond characteristics (covalent bonds have directionality, ionic bonds have no directionality).

High Temperature Resistant Silicone Coating and Construction

The silane coupling agent is obtained by addition of silicon chloroform (HSiCl3) and unsaturated olefins with reactive groups under the catalysis of platinum chloride acid, followed by alcoholysis. Silane coupling agent is essentially a class of silanes with organic functional groups, which have reactive groups that can chemically bond with inorganic materials (such as glass, silica sand, metals, etc.) and organic materials (synthetic resins, etc.) Chemically bonded reactive groups. It can be represented by the general formula Y(CH2)nSiX3, where n=0~3; X-hydrolyzable group; Y-organic functional group, which can react with the resin. X is usually chloro, methoxy, ethoxy, methoxyethoxy, acetoxy, etc. When these groups are hydrolyzed, they will generate silanol (Si(OH)3), which will combine with inorganic substances to form silicone. Y is vinyl, amino, epoxy, methacryloxy, mercapto or ureido. These reactive groups can react with organic substances to combine.

Silicone Knowledge - Introduction of Silane Coupling Agents