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CN-122008648-A - Ceramic organic silicon-based multi-layer fiber fireproof cloth and preparation method thereof

CN122008648ACN 122008648 ACN122008648 ACN 122008648ACN-122008648-A

Abstract

The invention relates to a ceramic organic silicon-based multi-layer fiber fireproof cloth and a preparation method thereof. The multi-layer fiber fireproof cloth comprises a flexible base layer and high temperature resistant layers attached to two sides of the flexible base layer, wherein the flexible base layer is formed by overlapping a ceramic organic silicon layer, an inorganic fiber cloth layer, a ceramic organic silicon layer, an inorganic fiber cloth layer and a ceramic organic silicon layer, the high temperature resistant layers are high silicon oxygen cloth, and the ceramic organic silicon layer is provided with closed-pore foam holes. The flexible base layer of the multi-layer fiber fireproof cloth is foamed by gradual heating and vulcanization, has good closed pores, and the ceramic short fibers and fluxing agents dispersed in the flexible base layer not only improve the strength of the fireproof cloth, but also maintain the mechanical property and ‌ dimensional stability of the ceramic layer after high-temperature ceramization, support the foam cells to be difficult to collapse, prevent the ceramic layer from cracking, effectively isolate heat transfer during high-temperature thermal shock and prevent fire spreading. The invention uses liquid silicone rubber, is easy to process and form, and realizes automatic continuous production.

Inventors

  • LIN HAIYAN
  • LIU XUPENG
  • LI ZHIFANG
  • CHEN RENER
  • CHEN BIN
  • ZHENG KELI
  • LI DONGYA

Assignees

  • 浙江天易新材料有限公司

Dates

Publication Date
20260512
Application Date
20260416

Claims (10)

  1. 1. The multi-layer fiber fireproof cloth based on the ceramic organic silicon is characterized by comprising a flexible base layer and high temperature resistant layers attached to two sides of the flexible base layer, wherein the flexible base layer is a flexible base layer formed by overlapping a ceramic organic silicon layer, an inorganic fiber cloth layer, a ceramic organic silicon layer, an inorganic fiber cloth layer and a ceramic organic silicon layer; the ceramic silicone layer has closed-cell foam cells; the inorganic fiber cloth layer is at least one of glass fiber cloth and ceramic fiber cloth; the high silica cloth is satin woven high silica fiber cloth with the silica content of more than or equal to 96 percent.
  2. 2. The multi-layer fiber fireproof cloth based on ceramic organic silicon is characterized in that the ceramic organic silicon layer is obtained by adding and vulcanizing 100 parts of vinyl silicone oil, 4-6 parts of hydroxyl silicone oil, 40-50 parts of ceramic filler, 10-15 parts of aluminum hydroxide, 5-10 parts of ceramic short fiber, 3-5 parts of fumed silica, 3-5 parts of fluxing agent, 8-10 parts of hydrogen-containing silicone oil, 0.3-0.5 part of platinum catalyst and 0.1-0.2 part of inhibitor, the ceramic filler is formed by compounding low-melting glass powder with one or more of alumina powder, mica powder, kaolin and silicon micropowder according to a mass ratio of 3 (2-3), and the fluxing agent is formed by compounding calcium carbonate with one of potassium fluoride and borax according to a mass ratio of 2 (1-2).
  3. 3. The ceramic organic silicon-based multi-layer fiber fireproof cloth according to claim 1, wherein the thickness of the ceramic organic silicon layer is 0.5-1.0 mm.
  4. 4. The ceramic-organosilicon-based multi-layer fiber fireproof cloth according to claim 2, wherein the softening point temperature of the low-melting-point glass powder is 600-800 ℃.
  5. 5. The ceramic-organosilicon-based multi-layer fiber fireproof cloth according to claim 1, wherein the inorganic fiber cloth layer is a plain woven inorganic fiber cloth with a thickness of 0.2-0.5 mm.
  6. 6. The ceramic silicone-based multi-layer fibrous fire protection cloth according to claim 2, wherein the ceramic short fibers are at least one of alumina fibers, mullite fibers, aluminum silicate fibers, and zirconia fibers.
  7. 7. The ceramic-organosilicon-based multi-layer fiber fireproof cloth according to claim 1, wherein the high silica cloth is satin woven high silica fiber cloth with the thickness of 0.4-1.3 mm.
  8. 8. The ceramic organic silicon-based multi-layer fiber fireproof cloth according to claim 2, wherein the hydroxyl silicone oil is medium hydroxyl value hydroxyl silicone oil with the hydroxyl mass content of 4-6%.
  9. 9. A ceramic silicone-based multi-layer fibrous fire barrier according to claim 2, wherein the inhibitor is at least one of 1-ethynyl-1-cyclohexanol, 3,7, 11-trimethyldodecyn-3-ol.
  10. 10. The method for preparing the ceramic organic silicon-based multi-layer fiber fireproof cloth according to any one of claims 1 to 9, comprising the following steps: (1) Adding 100 parts of vinyl silicone oil, 4-6 parts of hydroxyl silicone oil, 40-50 parts of ceramic filler, 10-15 parts of aluminum hydroxide, 5-10 parts of ceramic short fiber, 3-5 parts of fumed silica and 3-5 parts of fluxing agent into a three-roller grinding machine for grinding and dispersing to obtain a first-stage material, and grinding and dispersing 8-10 parts of hydrogen-containing silicone oil, 0.3-0.5 part of platinum catalyst and 0.1-0.2 part of inhibitor into the three-roller grinding machine to obtain a second-stage material; (2) Uniformly mixing the first-stage material and the second-stage material in a planetary mixer to serve as ceramic organic silicon materials, coating the ceramic organic silicon materials on the front and back sides of inorganic fiber cloth, overlapping the two layers to form a layer-paving structure of ceramic organic silicon layers, inorganic fiber cloth layers, ceramic organic silicon layers and ceramic organic silicon layers, bonding high silicon cloth on the ceramic organic silicon layers on two sides, shaping by a calender, vulcanizing step by a tunnel furnace, sequentially carrying out primary vulcanization foaming at the temperature of a vulcanization area of 80 ℃, secondary vulcanization foaming at the temperature of 100 ℃, tertiary vulcanization foaming at the temperature of 120 ℃, quaternary vulcanization at the temperature of 140 ℃, cooling and shaping by shaping rollers, and coiling to obtain the multilayer fiber fireproof cloth based on ceramic organic silicon.

Description

Ceramic organic silicon-based multi-layer fiber fireproof cloth and preparation method thereof Technical Field The invention relates to the technical field of layered fireproof cloth formed by fibers, in particular to a ceramic organic silicon-based multi-layer fiber fireproof cloth and a preparation method thereof. Background The inorganic fiber cloth has better high temperature resistance and fireproof performance, so that the inorganic fiber cloth can be used as fireproof cloth to effectively slow down heat transfer. However, when inorganic fiber cloth is used for fire extinguishing and heat insulation, air is easy to permeate, so that the oxygen insulation and flame retardance of the inorganic fiber cloth are reduced, and heat transfer is difficult to block fundamentally. In ‌ welding operation, chemical reaction, high-temperature pipelines, new energy automobiles and other scenes, the fire can be required to be quickly blocked from spreading in the initial stage of the fire, heat transfer is restrained, and time is won for firefighting rescue and peripheral safety. Therefore, there is a high demand for fire cloths in terms of insulating air and blocking heat transfer. The fireproof cloth is obtained by coating the glass fiber cloth with the ceramic silicon rubber, so that the effect of air isolation is improved, the ceramic silicon rubber is converted into a hard ceramic shell at high temperature, heat is insulated, heat shock at the temperature of more than 1000 ℃ can be resisted, and the fireproof cloth has huge application potential in the aspect of high-performance fireproof cloth. The existing high-performance fireproof cloth basically uses ceramic silicon rubber to coat inorganic fiber cloth. Chinese patent CN115674828B discloses a multi-layer fireproof material for a battery and a preparation method thereof, wherein the multi-layer fireproof material comprises a fireproof material substrate and a protective layer coated on the outer surface of the fireproof material substrate, the fireproof material substrate sequentially comprises a first glass fiber cloth layer, a ceramic silicon rubber layer and a second glass fiber cloth layer from top to bottom, and the multi-layer fireproof material has good flame retardant fireproof effect and high-temperature flame impact resistance. Chinese patent CN117507515B discloses a high-temperature ceramic fireproof heat-insulating pad with inorganic fiber cloth as a framework, and woven inorganic fiber cloth as a framework material, and a silicon rubber elastic ceramic composite material, which can resist high-strength thermal jet during electric core explosion. The ceramic silicon rubber and the glass fiber cloth are compounded to achieve a certain effect in the aspect of isolating air permeation and resisting thermal shock, a ceramic protective layer is formed, the flame retardant grade reaches UL 94V-0, but the ceramic silicon rubber and the glass fiber cloth are still insufficient in the aspect of isolating heat transfer when used as fireproof cloth. The ceramic silicon rubber is often subjected to shrinkage deformation after high-temperature ceramization, so that a ceramic layer is cracked or micropores collapse, a continuous ceramic body cannot be formed, the heat insulation effect is weakened under thermal shock, and the heat spreading performance is prevented from being influenced. Disclosure of Invention Aiming at the problem that the ceramic silicone rubber composite fiber cloth is easy to crack after ceramic formation to influence heat insulation at present, the invention provides a ceramic silicone-based multi-layer fiber fireproof cloth. The specific scheme for realizing the technical purpose is as follows: The invention provides a ceramic organic silicon-based multi-layer fiber fireproof cloth, which comprises a flexible base layer and high temperature resistant layers attached to two sides of the flexible base layer, wherein the flexible base layer is a flexible base layer formed by overlapping a ceramic organic silicon layer, an inorganic fiber cloth layer, a ceramic organic silicon layer, an inorganic fiber cloth layer and a ceramic organic silicon layer; the ceramic silicone layer has closed-cell foam cells; the inorganic fiber cloth layer is at least one of glass fiber cloth and ceramic fiber cloth; the high silica cloth is satin woven high silica fiber cloth with the silica content of more than or equal to 96 percent. The ceramic organic silicon layer is obtained by adding and vulcanizing 100 parts of vinyl silicone oil, 4-6 parts of hydroxyl silicone oil, 40-50 parts of ceramic filler, 10-15 parts of aluminum hydroxide, 5-10 parts of ceramic short fibers, 3-5 parts of fumed silica, 3-5 parts of fluxing agent, 8-10 parts of hydrogen-containing silicone oil, 0.3-0.5 part of platinum catalyst and 0.1-0.2 part of inhibitor, wherein the ceramic filler is formed by compounding low-melting glass powder with one or more of alumina powder, mica powde