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Intumescent fireproof blanket and preparation method thereof

A fire blanket, intumescent technology, applied in fire retardant addition, fire rescue, dental drilling, etc., can solve problems such as poor fire performance

Active Publication Date: 2019-11-26
LUYANG ENERGY SAVING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Intumescent fireproof products are mostly intumescent fireproof coatings, in addition to intumescent fireproof blankets, the existing intumescent fireproof blankets are mostly physical expansion, and the fire performance is poor

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0031] The preparation raw materials of the intumescent fireproof blanket provided by the invention include acrylic compound. The acrylic compound includes an acrylic emulsion and a defoamer.

[0032] In some embodiments of the present invention, the concentration of the acrylic copolymer in the acrylic emulsion is 10-30 kg / m 3 , the solid content of the acrylic emulsion is 50-60%, the pH value is 7-9, the viscosity is 100-500mpa·s, and the glass transition temperature is less than 0°C. In some embodiments of the present invention, the acrylic emulsion is produced by Wanhua Chemical Group Co., Ltd. The concentration of acrylic acid copolymer in the acrylic acid emulsion is 15kg / m 3 , the solid content of the acrylic emulsion is 52%.

[0033] In some embodiments of the present invention, the defoamer includes one or more of tributyl phosphate, polydimethylsiloxane and natural oil.

[0034] In some embodiments of the present invention, the mass ratio of the acrylic emulsion...

Embodiment 1

[0076] Add 525kg of ceramic fiber spinning cotton with a diameter of 2 to 4μm into the 30m 3 In water, use a high-speed centrifugal mixer to stir, and add 0.03kg PAE. After the fibers are evenly dispersed, add water to it for 30m 3 . Then add 75kg of expansion powder: 50kg of inorganic expansion powder; 25kg of organic expansion powder, meeting the weight fraction of ammonium polyphosphate, pentaerythritol, melamine, hydroxymethyl cellulose, and titanium dioxide: 1:2.5:1.5:1:1 The ratio of ceramic fiber mixture is obtained.

[0077] Continue to stir the ceramic fiber mix and add the acrylic emulsion 19kg (solid content is 52%, the concentration of acrylic acid copolymer in the described acrylic acid emulsion is 15kg / m 3 ) and polydimethylsiloxane 0.4kg. After the foam disappears, add 1kg of alum (prepared as a sol with a mass fraction of 10%) and 0.35kg of starch (prepared with a solution with a mass fraction of 1%), and flocculate to obtain a slurry.

[0078] The slurr...

Embodiment 2

[0081] Add 650kg of ceramic fiber spinning cotton with a diameter of 2 to 4μm into the 36m 3 In water, use a high-speed centrifugal mixer to stir, and add 0.04kg PAE. After the fibers are evenly dispersed, add water to it for 36m 3 . Then add 81.25 kg of expansion powder: 55 kg of inorganic expansion powder; 26.25 kg of organic expansion powder, meeting the weight fraction of ammonium polyphosphate, pentaerythritol, melamine, hydroxymethyl cellulose, and titanium dioxide: 1:2.5:1.5:1 : 1 ratio to obtain ceramic fiber mixture.

[0082] Continue to stir the ceramic fiber mix and add the acrylic emulsion 23kg (solid content is 52%, the concentration of acrylic acid copolymer in the described acrylic acid emulsion is 15kg / m 3 ) and polydimethylsiloxane 0.5kg. After the foam disappears, add 1.2kg of alum (prepared into a sol with a mass fraction of 10%) and 0.42kg of starch (prepared into a solution with a mass fraction of 1%), and flocculate to obtain a slurry.

[0083] The s...

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Abstract

The invention relates to the technical field of fireproof materials, and especially relates to an intumescent fireproof blanket and a preparation method thereof. The intumescent fireproof blanket is prepared from an acrylic acid mixture, a ceramic fiber mixture, a demulsifying agent, a flocculating agent and water; the acrylic acid mixture comprises an acrylic emulsion and a defoaming agent; the ceramic fiber mixture comprises a ceramic fiber, a polyamide epichlorohydrin resin and an expansion powder; and a mass ratio of the acrylic acid mixture to the ceramic fiber mixture to the demulsifyingagent to the flocculating agent is (10.3-15.8):(595.2-835.6):(0.8-1.6):(0.2-0.6). The intumescent fireproof blanket has a high expansion time and an excellent fireproof property. Results of experiments about of fire resistance test of the intumescent fireproof blanket according to a temperature rise curve in the GB / T9978 standard show that the fire resistance duration is longer than 50 min, and the expansion rate of the intumescent fireproof blanket is not smaller than 2.0.

Description

technical field [0001] The invention relates to the technical field of fireproof materials, in particular to an intumescent fireproof blanket and a preparation method thereof. Background technique [0002] Fire prevention has become an indispensable safety measure in social life. Intumescent fire blanket is one of the more advanced passive fire protection products at present, and it is widely used in cable racks, cable buses, steel structures, air ducts, conduits, etc. Most of the intumescent fireproof products are intumescent fireproof coatings, and there are also intumescent fireproof blankets. The existing intumescent fireproof blankets are mostly physical expansion, and their fireproof performance is poor. Contents of the invention [0003] In view of this, the technical problem to be solved by the present invention is to provide an intumescent fireproof blanket and its preparation method. The intumescent fireproof blanket provided by the present invention has a highe...

Claims

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Application Information

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IPC IPC(8): D21H13/38D21H17/14D21H21/16D21H17/37D21H21/34A62C2/06B31F5/00
CPCD21H13/38D21H17/14D21H21/16D21H17/37D21H21/34A62C2/065B31F5/00
Inventor 傅超左效章王成龙
Owner LUYANG ENERGY SAVING MATERIALS CO LTD