Nylon 11/polylactic acid biological base high molecular alloy and preparation method and application thereof

Abstract

The invention discloses a nylon 11 / polylactic acid biological base high molecular alloy, which comprises the following substances in parts by weight: 30-70 parts of nylon 11, 30-70 parts of polylacticacid, 1-8 parts of a compatilizer and 0.1-0.6 part of a stabilizer. A preparation method of the nylon 11 / polylactic acid biological base high molecular alloy comprises the following steps: vacuum-drying a PA11 matrix resin, a PLA resin, the compatilizer and the heat stabilizer; uniformly mixing the materials through a high speed mixer; then extruding the mixture through a twin-screw extruder, anduniformly granulating the mixture; and finally, drying the mixture in a vacuum oven to remove water. The primary raw material of the nylon 11 / polylactic acid biological base high molecular alloy is the biological base material, so that the demand on a petroleum-based high molecular material is lowered. The nylon 11 / polylactic acid biological base high molecular alloy material has great tensile strength, high modulus, high impact performance, good heat stability and low price, and the production process technology thereof has low demand on equipment, and the alloy is suitable for industrial production on a large scale.

Description

technical field [0001] The invention relates to the fields of polymer material technology and ecological environment materials, in particular to a high-performance bio-based nylon 11 / polylactic acid alloy and its preparation method and application. Background technique [0002] Polymer materials are one of the pillar industries of the national economy, and most of them come from petroleum products. However, my country's petroleum resources are very short. With the rising dependence of China's petroleum on foreign countries, the issue of petroleum strategic security has become very serious in front of us. , the lack of oil resources has become a "bottleneck" restricting the sustainable development of economy and society. At the same time, polymer materials are difficult to degrade, and the white pollution produced seriously affects the living environment of human beings. The development of new polymer materials using renewable biological resources is an important way to replac...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of poor compatibility and stability of nylon 11 / polylactic acid alloy during processing, and to prepare a reinforced and toughened nylon 11 / polylactic acid bio-based polymer alloy material. The material has high tensile strength, high modulus, improved impact resistance, good thermal stability during processing, low price, low equipment requirements, and is suitable for industrial production

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