HIPS (High Impact Polystyrene) is a high impact polystyrene material, which is widely used in the field of raw materials for chemical production. The following is the manufacturing method of HIPS:
1. Pretreatment
First, raw materials need to be pretreated.The raw materials for the production of HIPS mainly include styrene monomer, rubber modifier, etc. In order to ensure the smooth production, these raw materials need to be purified and dried. In order to ensure smooth production, these raw materials need to be purified, dried and other pretreatment operations.
2. Polymerization reaction
Next, the treated styrene monomer and rubber modifier are added to the polymerization reactor in a certain ratio. Under the action of the initiator, styrene monomer starts to carry out free radical polymerization reaction to produce polystyrene. At the same time, the rubber modifier will be dispersed in the polystyrene matrix during the polymerization reaction to form a sea-island structure blend.
3. De-volatilization
After the polymerization reaction is completed, de-volatilization is required to remove unreacted monomers and low molecular volatiles to obtain a high quality HIPS product.
4. Extrusion Pelletizing
Finally, the de-volatilized HIPS will be extruded and pelletized by extruder to make granular HIPS products.
The above is the basic manufacturing method of HIPS, the specific production process also needs to optimize and adjust the formula and process according to the performance requirements of the product. At the same time, in order to ensure the quality and stability of the product, it is also necessary to carry out comprehensive and strict quality control of the production process.
In short, the manufacturing method of HIPS involves a number of links and processes, which need to be operated in strict accordance with the production requirements in order to ensure the quality and performance of the product.
