A kind of preparation method of pva/sodium silicate modified ceramic flame-retardant fiber

A technology of flame-retardant fiber and ceramic fiber, which is applied in the field of preparation of PVA/sodium silicate modified ceramic flame-retardant fiber, can solve the problems of production workers' health, adverse environmental impact, ceramic fiber dust pollution, etc., and achieve a broad market application prospect , low energy consumption, and the effect of avoiding environmental pollution

Active Publication Date: 2020-01-17
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ceramic fiber falling powder will cause dust pollution, which will have adverse effects on the health of production workers and the environment

Method used

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  • A kind of preparation method of pva/sodium silicate modified ceramic flame-retardant fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Stir and dissolve 1.029g of sodium silicate in 10ml of distilled water. After the sodium silicate is completely dissolved, add 2.007g of PVA particles with a polymer of 1750 and continue to stir and dissolve. The stirring speed is 70rpm until the PVA particles are completely dissolved. , a viscous solution was obtained.

[0026] Then, speed up the stirring speed to 100rpm, and increase the temperature to be 50°C constant, stir for 2 hours, until no precipitation occurs, stop stirring, and use a glass rod to smear the viscous solution on the ceramic fiber surface equably to obtain PVA / Sodium silicate modified ceramic flame-retardant fiber; wherein, the mass ratio of solution and ceramic fiber is 1:15, as 1# modified ceramic fiber; the mass ratio of solution and ceramic fiber is 1:10, as 2# modified ceramic Fiber; the mass ratio of solution and ceramic fiber is 1:6, as a comparative example, it is recorded as 3# modified ceramic fiber.

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Abstract

The invention relates to a preparation method of polyvinyl alcohol (PVA) / sodium silicate modified ceramic flame retardant fiber. The preparation method comprises the following steps: dissolving sodium silicate into distilled water, then adding PVA, and stirring till no precipitates are generated to obtain a mixed solution; smearing the mixed solution on the surface of ceramic fiber, airing the solution at a room temperature, and obtaining the PVA / sodium silicate modified ceramic flame retardant fiber after the PVC is formed into a film. The method disclosed by the invention is quick, simple and convenient; no high-temperature and high-pressure equipment is needed, the energy consumption is low, and the preparation method is applicable to large-scale production.

Description

technical field [0001] The invention belongs to the field of preparation of ceramic flame retardant fibers, in particular to a preparation method of PVA / sodium silicate modified ceramic flame retardant fibers. Background technique [0002] Ceramic fiber is a heat-insulating and high-temperature-resistant material widely used in various thermal kilns. Because its bulk density is much lower than other refractory materials, it has small heat storage and obvious heat insulation effect. It is used as a heat-insulating and flame-retardant material. best choice. In addition, ceramic fibers are generally used as high-temperature insulation materials, carrier materials for filtration and catalysts, packing materials and friction materials, insulation coatings and reinforcement materials, etc. [0003] At present, there is almost no modification treatment on the surface of ceramic fibers, and the untreated ceramic fibers have obvious powder falling problems. Ceramic fiber falling po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/85
CPCC04B41/5024C04B41/85C04B41/4869C04B41/4539
Inventor 聂华丽王赏张烨
Owner DONGHUA UNIV
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