Preparation method of bamboo fiber/basalt fiber/polypropylene environment-friendly composite wire

Abstract

The invention relates to a preparation method of a bamboo fiber / basalt fiber / polypropylene environment-friendly composite wire. The preparation method comprises the following steps: S1, respectively drying polypropylene particles, basalt fibers and bamboo fibers; S2, after polypropylene and bamboo fibers are mixed in a high-speed mixer, preparing polypropylene / bamboo fiber master batches through an extruder; S3, after polypropylene and basalt fibers are mixed in a high-speed mixer, preparing polypropylene / basalt fiber master batches through the extruder; S4, weighing polypropylene / basalt fiber master batches, polypropylene / bamboo fiber master batches and a self-made compatilizer according to a certain proportion, and carrying out mixing extrusion to obtain polypropylene / bamboo fiber / basalt fiber master batches; S5, weighing polypropylene, the polypropylene / bamboo fiber / basalt fiber master batch, a plasticizer and an antioxidant according to the proportion, and carrying out melt extrusion granulation; and S6, carrying out wire drawing forming on the obtained granules in a single-screw wire drawing machine. According to the invention, the method is convenient to operate and low in cost, and the prepared printing wire is high in strength and good in mechanical performance.

Description

technical field [0001] The invention belongs to the field of polymer materials and their forming and processing, and in particular relates to a preparation method of bamboo fiber / basalt fiber / polypropylene environment-friendly composite wire. Background technique [0002] Polypropylene (PP) is a thermoplastic material, which has problems such as low modulus, poor impact strength, large shrinkage deformation, and easy warping. The prepared pure polypropylene 3D printing wire is not strong enough, and it can be significantly improved by blending and modifying it with fibers. Improve its performance; at present, most of the modified PP wires for 3D printing are modified with carbon fibers, but with the increasing shortage of petrochemical resources, the environmental protection problems are serious, and the dispersion of carbon fibers is poor, resulting in low strength of the modified wires. Application restricted. [0003] Bamboo fiber is a new type of natural modified fiber ...

AI Technical Summary

Problems solved by technology

[0002] Polypropylene (PP) is a thermoplastic material, which has problems such as low modulus, poor impact strength, large shrinkage deformation, and easy warping. The prepared pure polypropylene 3D printing wire is not strong enough, and it can be significantly improved by blending and modifying it with fibers. Improve its performance; at present, most of the modified PP wires for 3D printing are modified with carbon fibers, but with the increasing shortage of petrochemical resources, the environmental protection problems are serious, and the dispersion of carbon fibers is poor, resulting in low strength of the modified wires. Application restricted

[0003] Bamboo fiber is a new type of natural modified fiber material, which is cheap, has good degradation performance, and meets the needs of environmental protection. There are more hydroxyl groups in the fiber, and the heat resistance of natural products is poor, so the water resistance and thermal stability of printed products are poor

[0004] Basalt fiber is made of pure natural basalt at high temperature. It has high strength, modulus, heat resistance, alkali resistance, non-toxic, non-combustible, simple raw material, and no pollutant discharge during the preparation process. Basalt fiber The 3D printing wire prepared by modified PP has good mechanical properties, but the degradation performance of printed products is poor and the cost is high

[0005] The modification of the above two fibers to PP is to prepare 3D printing wire by direct blending and hot-melt extrusion. The compatibility between the fiber and PP is not good, and the overall performance of the obtained composite material is poor, which cannot meet the use requirements; currently The compatibilizer used is PP-g-(styrene-co-maleic anhydride) or PP-g-(styrene-co-1,2-polybutadiene), the former has a compatibilizing effect on polypropylene / bamboo fiber Good, the latter is good for polypropylene / basalt fiber compatibilization, but it cannot meet the compatibilization needs of polypropylene / bamboo fiber / basalt fiber composites