A kind of preparation method of flame retardant foam composite board

A flame-retardant foam and composite board technology, applied in the preparation of animal glue or gelatin, the joining of wooden veneers, chemical instruments and methods, etc., can solve the problems of easy peeling, easy detachment, and weak bonding, and achieve Effect of heat reduction and improvement of thermal stability

Active Publication Date: 2020-05-29
唐山市丰润区展硕保温建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing foam composite panels generally use rigid foams such as flame-retardant polyurethane and polystyrene as the core material. Since this type of plastic itself is flammable, it is often necessary to Add flame retardants, many of which will decompose when exposed to heat at high temperatures and can produce harmful gases
In addition, the bonding ability between the existing polyurethane foam and the polyurethane foam surface plate composite is not strong, that is, the bonding is not strong, and it is easy to detach and peel off during secondary processing after the finished product is produced.

Method used

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  • A kind of preparation method of flame retardant foam composite board

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Effect test

example 1

[0027] Add 200mL of distilled water to a four-necked flask with a stirrer and a reflux condenser, adjust the pH to 9 with a 40% sodium hydroxide solution, heat the four-necked flask to 90°C, add 60g of soybean powder, and heat-preserve After 50 minutes, add 10 g of phenol into the four-necked flask, cool down to 70 ° C, and heat-preserve for 15 minutes, continue to add 20 mL of formaldehyde solution with a mass fraction of 40% to the four-necked flask, react for 1 hour, and naturally cool to room temperature to obtain modified soybean protein Adhesive: put poplar wood in a wood crusher for 4 hours, pass through a 200-mesh sieve to get poplar wood powder, mix 20g poplar wood powder, 70g bamboo fiber, and 100mL water to get bamboo fiber pulp, inject the bamboo fiber pulp into a vacuum In the forming tank of the dehydration device, after air bubbling and stirring for 10 seconds, stand for vacuum dehydration for 5 minutes, and control the vacuum degree of dehydration to 70 Pa to ob...

example 2

[0029] Add 210mL of distilled water to a four-necked flask with a stirrer and a reflux condenser, adjust the pH to 9 with a 40% sodium hydroxide solution, heat the four-necked flask to 95°C, add 65g of soybean powder, and heat-preserve After 53 minutes, add 11 g of phenol into the four-necked flask, cool down to 73 ° C, and heat-preserve for 17 minutes, continue to add 22 mL of formaldehyde solution with a mass fraction of 40% to the four-necked flask, react for 1.5 hours, and naturally cool to room temperature to obtain modified soybeans Protein adhesive; poplar wood is put into a wood grinder and pulverized for 4.5 hours, passed through a 200-mesh sieve to obtain poplar wood powder, 25g poplar wood powder, 73g bamboo fiber, and 110mL water are mixed to obtain bamboo fiber pulp, and the bamboo fiber pulp is injected into the belt In a forming tank with a vacuum dehydration device, after air bubbling and stirring for 13 seconds, stand for vacuum dehydration for 6 minutes, and c...

example 3

[0031] Add 220 mL of distilled water to a four-necked flask with a stirrer and a reflux condenser, adjust the pH to 10 with a 40% sodium hydroxide solution, heat the four-necked flask to 100°C, add 70 g of soybean powder, and heat-preserve After 55 minutes, add 12 g of phenol into the four-necked flask, cool down to 75°C, heat-preserve for 20 minutes, continue to add 25 mL of formaldehyde solution with a mass fraction of 40% to the four-necked flask, react for 2 hours, and naturally cool to room temperature to obtain modified soybean protein Adhesive: put poplar wood into a wood crusher and pulverize for 5 hours, pass through a 200-mesh sieve to get poplar powder, mix 30g poplar wood powder, 75g bamboo fiber, and 120mL water to get bamboo fiber pulp, inject the bamboo fiber pulp into a vacuum In the forming tank of the dehydration device, after air bubbling and stirring for 15 seconds, stand for vacuum dehydration for 8 minutes, and control the vacuum degree during dehydration ...

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Abstract

The invention relates to the technical field of preparation of building materials, in particular to a preparation method of a flame-retardant foam composite board. According to the preparation method,methyl triethoxysilane is added to an alkalified flame retardant to obtain silica gel microencapsulated ammonium polyphosphate; a modified soybean protein adhesive and the silica gel microencapsulated ammonium polyphosphate are mixed to obtain a flame-retardant adhesive; and a polyurethane foam board and a bamboo fiberboard are subjected to bonding and hot-pressing to obtain the foam composite board. Through the method, ammonium polyphosphate is cladded with silica gel; and in the burning process, metaphosphoric acid is used for dehydrating the polyurethane foam board to form a compact carbonlayer on the surface to prevent oxygen and heat from further diffusing to the interior of polyurethane foam, so that the flame retardant property of the foam composite board is improved. Formaldehydehas the functions of a stabilizing agent and a cross-linking agent; and meanwhile, the stability of modified soybean protein has the inhibition effect on release of the formaldehyde, and noxious formaldehyde cannot be released. Accordingly, the polyurethane foam board and the bamboo fiberboard are bonded more tightly. The flame-retardant foam composite board has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of building material preparation, in particular to a method for preparing a flame-retardant foam composite board. Background technique [0002] Foam plastic is a resin-based plastic product with a large number of tiny pores inside. The common feature of foamed plastics is that they are light in weight, which is several times or even dozens of times lighter than the same kind of plastics. Foamed plastics are widely used in people's daily life because they have countless small holes, so they are not easy to conduct heat, can absorb sound, insulate, and shockproof, etc. [0003] Foam composite board is a composite material formed by gluing and pressing two materials inside and outside or directly foaming the inner layer. The outer layer of the board is made of high-strength material, and the inner layer is made of lightweight heat-insulating foam material. It has light material, high strength, high rigidity, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/00B27N1/00B27N3/08B27D1/08B27D1/04C09J189/00C09J11/04C08H1/00B32B9/02B32B9/04B32B27/12B32B27/40B32B37/24B32B37/06B32B37/10B32B38/18
CPCB27D1/04B27D1/08B27N1/00B27N3/002B27N3/08B32B5/02B32B5/245B32B27/12B32B27/40B32B37/06B32B37/10B32B37/24B32B38/1808B32B2037/243B32B2250/40B32B2255/02B32B2255/26B32B2266/0278B32B2307/3065B32B2419/00C08H1/00C08K9/10C08K2003/323C09J11/04C09J189/00
Inventor 唐林元何伟仁张建初
Owner 唐山市丰润区展硕保温建材有限公司
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