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Classification of twin screw extruder

Process parameters affecting internal mixer mixing 1. Mixing procedure and order of adding materials 2. Mixing temperature 3. Mixing time 4. Rotor speed

Compared with strand pelletizing, underwater pelletizing has the advantages of better pellet quality, higher degree of automation and lower cost. However, compared with less sensitive commodity resins such as polyethylene, polypropylene or polystyrene, the risk of mold freezing is greater when producing engineering resins such as those mentioned in the previous paragraph.

TPE granules stick together when granulating? Three solutions Processing Technology: Adjust screw speed and barrel temperature for even mixing and full cooling, use low shear molding and nitrogen purification to reduce temperature, and ensure granules cool below 30°C before packaging. In hot weather, add ice to the cooling water to lower temperature. Formula: Incorporate an appropriate amount of external lubricant to prevent overuse. Raw Materials: Utilize high molecular weight SEBS with a star-shaped structure, ensuring it does not absorb more than 2.5 times its weight in oil and add fillers afterward.

Polyvinyl chloride (PVC) is a polymer formed by the polymerization of vinyl chloride monomer (VCM) in the presence of initiators such as peroxides and azo compounds or under the action of light or heat according to the free radical polymerization mechanism. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.

TPV sealing strips have better elasticity and aging resistance than TPE. Why are they gradually being replaced by TPE in daily life applications? The main reasons are as follows:1. Environmental protection 2. Material performance 3. Processing cost

PS material has high rigidity and hardness, but it is brittle and easy to crack and break under impact. By adding toughening agent, the impact strength of PS can be effectively improved, so that it can better withstand external impact, thereby improving the service life and safety of the product.

Corrosive, abrasive, and high-temperature resins can inadvertently degrade screws and barrels. Certain engineered materials, thermoplastic elastomers, and newly developed biopolymers often create corrosive conditions that rapidly degrade equipment. Reinforcement materials such as glass fibers, balls, and other fillers and additives are abrasive and can also cause damage to equipment, especially feed screws and barrels.