High-grating-rate and low-odor polypropylene resin composition and preparation method thereof

Abstract

The invention provides a high-grating-rate and low-odor polypropylene resin composition and a preparation method thereof. The polypropylene resin composition consists of the following components in parts by weight: 100 parts of polypropylene resin, 1-3 parts of a polar monomer, 0.01-1 part of an initiator A, 0.01-1 part of an initiator B and 0.5-2 parts of a second monomer. The preparation method comprises the steps of weighing raw materials according to the weight part, mixing the raw materials in a high-speed mixer for 2-5min and discharging materials; and implementing reactive extrusion grafting on the mixed raw materials through a dual-screw extruder. The polypropylene resin composition disclosed by the invention, through selecting initiator and comonomer, reduces pungent odor of materials and improves grafting efficiency. The prepared polypropylene disclosed by the invention has the advantages of light product odor, high grating rate and low gel rate, and is applicable to a flexibilizer and a compatilizer of polar monomer and non-polar polymer alloy; the polypropylene resin composition is used for filling or strengthening polypropylene, and is capable of improving the mechanical performance and the heat resistance of the material.

Description

technical field [0001] The invention relates to a resin composition and a preparation method thereof, in particular to a high-grafting rate, low-odor polypropylene resin composition and a preparation method thereof. Background technique [0002] With the advancement of science and technology and the development of the times, polymer modified materials have been more and more widely used in various fields of production and life. Due to the difference in polarity between the components of polymer modified materials such as polymer alloys or reinforced filling materials, the components are incompatible, which affects the structure and performance of the modified material, which requires modification The material is augmented. [0003] As a general-purpose plastic, polypropylene has high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid-base corrosion. It is the fastest growing among the five general-purpose plastics. However,...

AI Technical Summary

Problems solved by technology

The preparation process is as follows: weighing the raw materials according to the weight ratio; putting the raw materials into a high-mixer and mixing them for 2-5 minutes; discharging; melting and extruding the mixed raw materials in a twin-screw machine, and the speed of the screw machine is 180- 600 rpm, temperature 150-225°C, but this solution requires the use of odor absorbers to cover and absorb odors, which increases production costs

Images