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Expansion type flexible fire retardant decorative material, and preparation method and application thereof

A facing material and intumescent technology, which are applied in the field of intumescent flexible fire-resistant facing materials and their preparation, can solve the problems of inability to meet fire protection requirements, inconvenient detail modeling, low fire resistance, etc., and achieve easy construction and application, low quality , the effect of high flame retardant performance

Inactive Publication Date: 2012-02-15
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of building energy-saving technology, the requirements for thermal insulation of buildings are constantly increasing. At present, the external thermal insulation of external walls mainly adopts the technical measures of covering the wall with foamed plastic materials. Since the foamed plastics are made of polystyrene foam and polyurethane Foam plastics are the main materials, which are combustible materials. Due to their low fire resistance, they cannot meet the fire prevention requirements, and there are great safety hazards in use. In addition, inorganic ceramic tiles are used for covering protection and finishing, which are non-combustible materials, which avoid fire and combustion. , but the use of ceramic tile veneer, due to its heavy quality, will bring safety hazards if it falls off, and it is inconvenient to use ceramic tile veneer in some more complicated details

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] 1. Preparation of waterborne polyurethane emulsion:

[0033] 1) Prepolymer preparation, put 280 grams of polyether (2020:3050 mass ratio is 2:1) into a temperature-adjusted reactor, and vacuum dehydrate when the temperature rises to 110~120°C until the water content is lower than 0.8%. Slowly add 75 parts of IPDI when the temperature drops to 65~60°C (control the reaction temperature not to exceed 100°C). Incubate at 80°C for 1 hour to prepare a prepolymer containing free isocyanate groups.

[0034] 2) Chain extension reaction: Slowly add 60 grams of diethylene glycol dropwise to the prepolymer, continue to keep warm at 80°C for 2-3 hours, and cool down the extended prepolymer to 60-50°C. Add 500 grams of 5% tartrate in acetone, raise the temperature to 55-60 ° C, keep it under reflux for 1 hour, then add 800 grams of acetone to dilute to reduce the viscosity.

[0035] 3) For emulsification, cool the polymer to room temperature, slowly add 100 grams of 15% triethylam...

example 2

[0045] 1. Preparation of water-based polyurethane emulsion

[0046] 1) Prepolymer preparation, put 320 grams of polyether (2020:3050 is 2:1) into a temperature-adjusted reactor, and vacuum dehydrate when the temperature is raised to 110~120°C until the water content is lower than 0.5%. Add slowly when the temperature drops to 65~60°C 85 g IPDI (control the reaction temperature not to exceed 100°C). Incubate at 80°C for 1 hour to prepare a prepolymer containing free isocyanate groups.

[0047] 2) Chain extension reaction: Slowly add 80 grams of diethylene glycol dropwise to the prepolymer, continue to keep warm at 80°C for 2-3 hours, and cool down the extended prepolymer to 60-50°C. Add 600 parts of 5% tartrate in acetone solution, raise the temperature to 55-60°C, keep it under reflux for 1 hour, then add 850 grams of acetone to dilute to reduce the viscosity.

[0048] 3) For emulsification, cool the polymer to room temperature, slowly add 110 grams of 15% triethylamine ace...

example 3

[0058] Implementation steps are the same as example 2, consumption: 200 grams of water-based polyurethane emulsion, 200 grams of silicone acrylic copolymer emulsion; 800 grams of colored sand; other dispersant, emulsifier, thickener, film former consumption and use are equal to example 2.

[0059] The combustion grade of the product reaches A2 grade, and the oxygen index reaches 35.

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PUM

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Abstract

The invention belongs to the technical field of polymer matrix composite materials and relates to a decorative material applicable to exterior wall foamed plastic insulation works for buildings, i.e., an expansion type flexible fire retardant decorative material and a preparation method thereof. A technical scheme for the invention is as follows: a blended polymer emulsion is prepared by adding silicone-acrylate copolymer emulsion into an aqueous polyurethane emulsion and compounding and blending the two emulsions. The expansion type flexible fire retardant decorative material is a novel functional material; components in the material swell when burned by a fire, and a stable structural carbon layer is formed; the swollen structural carbon layer can isolate heat transfer and has a fire resistant effect. The material can be used for preparing products with a certain degree of flexibility, is convenient to construct and apply and can be used to substitute ceramic tiles and used for fire retardant decorative layers of buildings.

Description

technical field [0001] The invention belongs to the technical field of polymer-based composite materials, and relates to a facing material suitable for building exterior wall foam plastic insulation engineering, that is, an intumescent flexible fireproof facing material and a preparation method thereof. Background technique [0002] In buildings, the heat loss of the external wall enclosure structure is relatively large, and the wall is the main component of the external enclosure structure. According to the principle of value engineering, the development of external wall insulation technology has become an important link to realize building energy saving. It saves a lot of energy, and can also provide residents with a comfortable environment and bring many benefits. With the rapid development of building energy-saving technology, the requirements for thermal insulation of buildings are constantly increasing. At present, the external thermal insulation of external walls main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L33/04C08K13/02C08K3/22C08K3/26C08K3/32C08K5/3492C04B26/16C04B26/06
Inventor 李良波孟平蕊刘勇旭
Owner UNIV OF JINAN