Bar section synthesized by using depleted stalk of plant, and prepartion method

Abstract

This invention discloses a method for manufacturing profile from waste plant straws. The profile is composed of: powder of waste plant straws 30-50 wt.%, plastic resin 20-40 wt.%, calcium carbonate 15-25 wt.%, flame retardant 3-7 wt.%, anti-aging agent 2-5 wt.%, and silicone oil 1-3 wt.%. The method comprises: (1) fracturing waste plant straws, drying to a water content of 6-10%, and pulverizing to 50-200 mesh; (2) homogeneously mixing the raw materials, extruding in a twin-screw extruder at 150-180 deg.C, and cooling. The profile has such advantages as low cost, abundant raw materials, simple manufacturing process, high compactness, good mechanical properties, good noise absorption, good heat resistance, good flame retardance, good corrosion resistance, high anti-aging capacity and good processability.

Description

technical field [0001] The invention relates to a composite profile and a preparation method thereof, in particular to a profile synthesized by using waste plant straws and a preparation method thereof. Background technique [0002] Castor stalks, sunflower stalks, hemp stalks, sorghum stalks, and corn stalks are a large number of crop products planted in my country. Straw, as a by-product of agricultural production, has a very large harvest and is widely distributed. It is also an important agricultural regeneration resource. Crop straw utilization technology is to process excess waste straw into another usable product through various processing channels. There are existing patent reports on the method of utilizing crop stalks to process boards, for example: castor stalk artificial wood products, plant straw artificial board new technology, sunflower stalk artificial wood products. The production process of the reported patent is to crush the straw, cut it into small piece...

AI Technical Summary

Problems solved by technology

The production process of the reported patent is to crush the straw, cut it into small pieces or weave it into a sheet with a rope, all of which are blended and stirred with an adhesive, and then hot-pressed and solidified in a mold of different specifications. Adhesives contain toxic and harmful solvent substances (such as formaldehyde, toluene and phenol), which are harmful to the human body and pollute the environment, and have poor mechanical properties and high costs.

At the same time, there are still some problems in terms of process, technology, quality, and environmental pollution.

Therefore, plant stalks are used as waste in many places, which is not only a great waste of resources, but also causes huge economic losses, and also causes a lot of pollution to the environment.