Production process of chopped basalt fibers

Abstract

The invention relates to a fiber production process, in particular to a production process of chopped basalt fibers. The production process not only reduces the power consumption, improves the production environment and greatly lowers the production cost, but also can greatly improve the uniformity of product performance while guaranteeing the product quality.

Description

technical field [0001] The invention relates to the technical field of surface modification of inorganic materials, in particular to a production process of basalt chopped fibers. Background technique [0002] Continuous basalt fiber is a tens of thousands of meters of continuous fiber made of natural basalt ore as raw material, which is formed into a molten state at a high temperature of about 1500 ° C, formed by a platinum-rhodium alloy bushing plate, and then drawn by a wire drawing machine at high speed. It is a new type of environmentally friendly inorganic fiber material with excellent properties such as light weight, high strength, high temperature resistance, corrosion resistance, oxidation resistance, radiation protection, heat insulation and sound insulation. New high-performance fibers are widely used in the fields of aerospace, automobile and ship, civil engineering and transportation, energy and environment, chemical fire protection, national defense and militar...

AI Technical Summary

Problems solved by technology

Since the tens of thousands of meters of continuous fiber surrounds the receiving tube with a certain thickness, the thickest part can reach 50-60 mm, and the basalt fiber itself has excellent heat insulation performance, so it usually takes more than 12 hours for heat treatment to transfer the temperature to The inner layer fiber on the spinning tube is fully dehydrated and solidified; however, the sizing agent on the surface of the outer layer fiber on the spinning tube is completely cured within 3 hours, and begins to be heated at high temperature in the next 9 hours. Gradually aging in the middle, the performance declines; the traditional production process not only causes a lot of waste of electric energy, increases the production cost, but also causes a large difference in the performance between the outer layer fiber and the inner layer fiber on each spinning tube, only for In terms of tensile strength, the fluctuation range between the two ((30 strands of chopped fiber are randomly selected for testing, the difference between the maximum value and the minimum value accounts for the percentage of the minimum value is the fluctuation range)) can reach 40%. The performance of the same batch of products caused great fluctuations

[0005] In addition, due to the fast speed of the chopping machine, the fiber diameter is extremely small, the weight is extremely light and the surface is dry, a large number of flying filaments are easily generated during the chopping process. The operator must wear protective equipment to avoid a large number of micron-sized flying filaments attached to the surface. Clothes and body cause itching and needle-pricking sensations; the chopped workshop must also be isolated separately, high-power discharge facilities are installed in the workshop, and water pools are installed outside the workshop to collect the flying wire discharged from the workshop to avoid polluting the environment. Added trouble and cost

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