SIS是由苯乙烯、异戊二烯和苯乙烯单体按嵌段结构交替排列组成的合成高分子材料。

SIS(SIS) is a synthetic polymer material composed of styrene, isoprene and styrene monomers alternately arranged in a block structure. Here are some information about the nature, use, method and safety of SIS:

自然：
1. Elasticity: SIS has good elasticity and resilience, and can recover its initial shape after strain.
2. Viscosity: SIS shows high viscosity and can provide good adhesion performance.
3. Cold resistance: SIS can still maintain good elasticity and viscosity at low temperature.
4. Chemical resistance: SIS has good resistance to some common solvents and chemicals.

使用：
1. Adhesive: SIS is widely used in the field of adhesives for bonding paper, plastic, wood and other materials.
2. Sealing film material: SIS can be used as a thermoplastic sealing film material, such as a sealing film for conductive materials.
3. High elastic material: SIS is often used to prepare elastic and soft materials, such as rubber negatives, springs, seals, etc.

Method:
The preparation of SIS is usually completed by polymerization. Styrene and isoprene are added to a suitable reaction vessel in a certain proportion, and polymerization initiators and other additives are added, the polymerization reaction is carried out under appropriate reaction conditions (e. G., temperature, time, etc.) to obtain SIS.

安全信息：
1. SIS is usually stable and safe, but care should be taken to avoid producing combustibles or harmful substances during preparation and use.
2. When manipulating SIS, it is recommended to wear appropriate protective gloves and goggles to prevent contact with skin and eyes.
3. In case of accidental inhalation or ingestion of SIS, it should be moved to a ventilated place as soon as possible and seek medical treatment.
4. When storing and handling SIS, please observe the relevant safety code of practice and environmental regulations.