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Preparation method of flame-retardant foam composite board

A fire-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, weak bonding ability, easy detachment, etc. To achieve the effect of improving thermal stability and reducing heat

Active Publication Date: 2018-07-06
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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  • Preparation method of flame-retardant foam composite board

Examples

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Effect test

example 1

[0027] Add 200 mL 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 60 g of soybean flour, and heat preservation. After 50 min, add 10 g of phenol to the four-necked flask, cool down to 70 °C, keep heat for 15 min, continue to add 20 mL of formaldehyde solution with a mass fraction of 40% into the four-necked flask, react for 1 h, and naturally cool to room temperature to obtain modified soybean protein Adhesive; put poplar wood into a wood pulverizer and pulverize for 4 hours, pass through a 200-mesh sieve to obtain poplar wood powder, mix 20 g poplar wood powder, 70 g bamboo fiber, and 100 mL of water to obtain bamboo fiber pulp, and inject the bamboo fiber pulp into a vacuum In the forming tank of the dehydration device, after air bubbling and stirring for 10s, stand for vacuum dehydration for 5min, and the vacuum degree during dehydration is contro...

example 2

[0029] Add 210 mL 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 65 g of soybean flour, and heat preservation. After 53 minutes, 11 g of phenol was added to the four-necked flask, the temperature was lowered to 73°C, and the temperature was maintained for 17 minutes. Then 22 mL of formaldehyde solution with a mass fraction of 40% was added to the four-necked flask, reacted for 1.5 hours, and naturally cooled to room temperature to obtain modified soybeans. Protein adhesive; put poplar wood in a wood pulverizer and pulverize for 4.5 hours, pass through a 200-mesh sieve to obtain poplar wood powder, mix 25 g of poplar wood powder, 73 g of bamboo fiber, and 110 mL of water to obtain bamboo fiber pulp, and inject the bamboo fiber pulp into the belt In a molding tank with a vacuum dehydration device, after air bubbling and stirring for 13s, stand for vac...

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 preservation. After 55min, add 12g of phenol to the four-necked flask, cool down to 75°C, keep heat for 20min, continue to add 25mL of formaldehyde solution with a mass fraction of 40% into the four-necked flask, react for 2h, and naturally cool to room temperature to obtain modified soybean protein Adhesive; put poplar wood in a wood pulverizer and pulverize for 5 hours, pass through a 200-mesh sieve to obtain poplar wood powder, mix 30 g poplar wood powder, 75 g bamboo fiber, and 120 mL of water to obtain bamboo fiber pulp, and inject the bamboo fiber pulp into a vacuum In the forming tank of the dehydration device, after air bubbling and stirring for 15s, stand for vacuum dehydration for 8min, and the vacuum degree during dehydration is controlled...

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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 preparation method of a flame-retardant foam composite board. Background technique [0002] Foamed plastic is a resin-based plastic product with a large number of tiny pores inside. The generality of foam plastic is light weight, which is several times or even dozens of times lighter than the same kind of plastic. Foamed plastics are widely used in people's daily life because of the numerous small holes, so they are not easy to transfer heat, can absorb sound, insulate and shockproof, etc. [0003] Foam composite board is a composite material made of internal and external materials by gluing and pressing or directly foaming the inner layer. With light material, high strength, high rigidity, good seismic performance, heat insulation, sound insulation and waterproof performance, it can be used in large-span public buildings, workshops, modular houses and t...

Claims

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Application Information

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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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