Preparing method of polyolefin modified engineering plastic

Abstract

The invention provides a preparation method of polyolefin modified engineering plastics, which comprises polyolefin nano active filler masterbatch, matrix resin, surface treatment agent, chemically synthesized grafting agent, nucleating agent, crosslinking agent, toughening agent, filler additives, reinforcing agents, anti-aging agents, dispersants, stabilizers and inorganic fillers as raw materials, including the following steps: 1) active dispersion treatment of polyolefin nano-active filler masterbatch and matrix resin with surface treatment agent; 2) at 60 At -80 degrees Celsius, the polyolefin nano-active filler masterbatch and matrix resin treated in step 1) are subjected to ultra-high-speed centrifugal dispersion and mixing treatment to obtain a uniformly mixed and dispersed composite material matrix; 3) chemically synthesized grafting agent, nucleation agent, crosslinking agent, toughening agent, filler, reinforcing agent, anti-aging agent, dispersant and stabilizer to treat the composite material matrix produced in step 2). The modified polyolefin engineering plastics of the invention can be made into products meeting special performance requirements.

Description

technical field [0001] The invention relates to a preparation method of polyolefin modified engineering plastics, belonging to the technical field of modified engineering plastics. Background technique [0002] Engineering plastics refer to plastics with a tensile strength above 50 MPa, a flexural modulus above 2 GPa, an impact strength above 60 J / m, and a long-term service temperature above 100 degrees Celsius. They are used in industries such as automobiles, machinery, and electronic appliances. [0003] Modified engineering plastics refer to plastic products that are processed on the basis of general-purpose plastics and engineering plastics through filling, blending, and reinforcement to improve their performance in terms of flame retardancy, strength, impact resistance, and toughness. Ordinary plastics often have their own characteristics and defects. Modified plastics are to change the properties of plastics. The basic technologies include: 1. Reinforcement: blending g...

AI Technical Summary

Problems solved by technology

However, the shrinkage rate of PP material is relatively large, the creep resistance is relatively poor, the weather resistance and room temperature stability are relatively poor, and the low-temperature impact toughness is low, so it cannot meet the special requirements of some product materials, so it needs to be tested. Modification to meet the needs of special performance of the product