External wall fireproof flame-retardant composite heat-insulating decorative plate and preparation method thereof

A fire-retardant, composite thermal insulation technology, applied in the field of flame-retardant materials, can solve the problems of adding flame-retardant substances, adding auxiliary treatment, surface precipitation, etc., and achieves the improvement of fire-retardant and flame-retardant performance, improved packing tightness, and low thermal seepage coefficient. Effect

Inactive Publication Date: 2018-10-02
肖群伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is a method of impregnating flame retardant under pressure, and there are certain problems in this wood treatment method: (1) The flame retardant must be soluble in water and impregnated into the wood in liquid form, so the penetration of tree species (2) Most of the inorganic flame retardants cannot form chemical bonds with wood, and are prone to surface precipitation, which affects subsequent secondary processing; (3) The above-mentioned flame retardants have adverse effects on the physical and mechanical properties of wood, such as MOR (static bending strength), MOE (modulus of elasticity) decrease, and brittleness increase; (4) To achieve a higher flame retardant level, it is necessary to increase the (5) The treated wood must be dried for the second time, which is easy to cause secondary cracking and deformation of the wood, and increase the loss
If there is a lot of flame retardant remaining on the surface veneer, the product is prone to moisture absorption and frost return, and the subsequent secondary processing performance and paint performance are poor. Combustion effect, need to increase auxiliary treatment or increase application restrictions

Method used

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  • External wall fireproof flame-retardant composite heat-insulating decorative plate and preparation method thereof
  • External wall fireproof flame-retardant composite heat-insulating decorative plate and preparation method thereof

Examples

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preparation example Construction

[0043] A method for preparing a fireproof and flame-retardant composite thermal insulation decorative board for an exterior wall comprises the following steps:

[0044] 1) Preparation of modified expandable graphite: use flake graphite, hydrogen peroxide, and fuming nitric acid, and stir rapidly in an ice-water bath until the reaction becomes gentle. ≥ 99.5% acetic acid solution with constant stirring, react for 60 minutes, wash with water, filter with suction, and dry to obtain sulfur-free and ash-free modified expandable graphite with an expansion volume of 300-350ml / g, of which flake graphite, fuming nitric acid, hydrogen peroxide , the ratio of acetic acid is 5(g): 12(ml): 1(ml): 5(ml);

[0045] 2) Preparation of modified expandable polystyrene: water, polystyrene masterbatch, sodium butylnaphthalene sulfonate, polyvinyl alcohol, butane, dicumyl peroxide, tetrabromobutane, antioxidant The agent BHT is mixed according to the mass ratio of 1.6:1:0.03:0.002:0.1:0.008:0.013:0...

Embodiment 2

[0054] 1) Preparation of modified expandable graphite: add KMnO4 to flake graphite according to the ratio of mass ratio flake graphite: KMnO4 = 1:0.3, stir evenly, add 70% HClO3 solution, and maintain the ratio of solid to liquid at 1:4 Keep stirring at 35°C for 90 minutes, wash with water, filter with suction, and dry to obtain modified expandable graphite with an expansion volume of 550ml / g2) Preparation of modified expandable polystyrene: mix water, polystyrene Masterbatch, sodium butylnaphthalene sulfonate, polyvinyl alcohol, butane, dicumyl peroxide, hexabromocyclododecane, and antioxidant BHT in a mass ratio of 1.6:1:0.03:0.002:0.1:0.008: 0.02: 0.003 mixing, impregnation reaction at 72±2°C, pressure 0.9±0.1MPa, 100r / min speed for 10h can be obtained;

[0055] 3) Preparation of flame-retardant insulation layer: feed the modified expandable polystyrene obtained in step 2) into a pre-expansion machine with a steam pressure of 0.2 MPa and preheated to 70°C for pre-foaming. ...

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Abstract

The invention relates to an external wall fireproof flame-retardant composite heat-insulating decorative plate, comprising a water-soluble non-combustible ceramic protective layer, an organic-inorganic composite toughening layer and a flame-retardant thermal insulation layer. The organic-inorganic composite toughening layer is flame-retardant thermal insulation type polymer mortar, and has the following components: a cementitious material S, ceramic microbeads, hydroxyethyl methylcellulose, redispersible latex powders, limestone powders and modified expandable graphite. Components of the flame-retardant thermal insulation layer are: modified expandable polystyrene and modified expandable graphite. The flame-retardant heat-insulating plate is mounted on a wall surface by bonding and anchoring. Bonding performance of the flame-retardant decorative plate prepared by the method of the invention meets requirements of national standards and flame retardant properties are given to a base material. Furthermore, mechanical properties of the base material would not be influenced, and formaldehyde emission is above an E1 level, the decorative plate is safe and environmental-friendly. At the same time, natural texture of timber is maintained and decorative effect is good.

Description

technical field [0001] The invention relates to a flame-retardant decorative board, a preparation method thereof and a flame-retardant material comprising the flame-resistant decorative board. Background technique [0002] At present, there are many researches on the fire-retardant treatment of wood and wood materials, but the existing methods for fire-retardant treatment of wood materials have various defects. For example, CN1911613A discloses a wood flame-retardant treatment process, which is to put wood into a sealed container, vacuum-treat the container including wood, and then input the fire-retardant liquid into the container in a vacuum state through a high-pressure pump. In the process, after the fire retardant solution reaches saturation in the wood, the wood is taken out and dried; the fire retardant solution contains ammonium sulfate, diammonium hydrogen phosphate, boric acid and borax. This method is a method of impregnating flame retardant under pressure. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04F13/08B32B13/04B32B27/32
CPCE04F13/0875B32B13/04B32B27/32B32B2607/02E04F13/0871
Inventor 肖群伟
Owner 肖群伟
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