Flame retardant phenolic resin foamed sandwiching material and its preparation

A technology of phenolic foam and sandwich materials, applied in the direction of chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of insufficient flame retardancy of foam, failure to meet non-combustible A-level standards, etc., and achieve inhibition Smoke generation and hydrogen halide generation, reduced energy consumption, excellent thermal insulation effect

Inactive Publication Date: 2005-05-11
厦门高特高新材料有限公司
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

US 4,419, No. 460 patent uses hydrated alumina to improve the closed cell ratio of phenolic foam, and its addition is 2%-15%, more preferably

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] The non-flammable phenolic foam sandwich material consists of 5 layers, the surface layer is aluminum foil, the core layer is phenolic foam, and the surface layer and the core layer are the bonding layer. The surface layer aluminum foil is embossed aluminum foil, and the surface of the aluminum foil is coated with anti-corrosion.

[0038] The components of the core phenolic foam and the content in parts by weight are: expandable phenolic resin 100, the surfactant is "Tween 80"3, the flame retardant is aluminum hydroxide 100 and magnesium hydroxide 20, foaming agent Petroleum ether 8 is selected, and phosphoric acid 3 and benzene sulfonic acid 5 are selected as the curing agent.

[0039] The molar ratio of phenol to formaldehyde of the expandable phenolic resin is 1:1.6, and the viscosity at room temperature is 12000cp. The mixture is stirred evenly and foamed and solidified at 70°C. The density of phenolic foam is 100kg / m 3 .

[0040] The process steps ar...

Example Embodiment

[0048] Example 2

[0049] The non-combustible phenolic foam sandwich material consists of 5 layers, the surface layer is aluminum foil fiber cloth, the core layer is phenolic foam, and the surface layer and the core layer are the bonding layer. The surface layer aluminum foil is embossed aluminum foil, and the surface of the aluminum foil is coated with anti-corrosion.

[0050] The components of the core layer phenolic foam and the content in parts by weight are: expandable phenolic resin 100, the surfactant is "Tween 80" 2.5, the flame retardant is magnesium hydroxide 150 and hollow microbeads 30, and the foaming agent Choose pentane 6, and choose boric acid 6, benzene sulfonic acid 4 and p-toluene sulfonic acid 5 as the curing agent.

[0051] The molar ratio of phenol to formaldehyde of the expandable phenolic resin is 1:2.0, and the viscosity at room temperature is 10000cp. The mixture is stirred evenly and foamed and solidified at 75°C.

[0052] The density of the phenolic foa...

Example Embodiment

[0062] Example 3

[0063] The non-combustible phenolic foam core material is the same as in Example 1.

[0064] The components of the core phenolic foam and the content in parts by weight are: expandable phenolic resin 100, the surfactant is "EL-40" 2.5, the flame retardant is aluminum hydroxide 100 and hollow microbeads 150, and the foaming agent Hexane 3 is selected, and phosphoric acid 4, boric acid 6 and xylene sulfonic acid 7 are selected as the curing agent. The molar ratio of phenol to formaldehyde of the expandable phenolic resin is 1:2.5, and the viscosity at room temperature is 5000 cp. The mixture is stirred evenly and foamed and solidified at 65°C. The density of the phenolic foam is 200kg / m 3 .

[0065] The process steps are:

[0066] 1. Synthesis of expandable phenolic resin:

[0067] The molar ratio of phenol to formaldehyde is 1:2.5, using alkali as a catalyst (pH=9), reacting at 70°C for 4 hours, and the refractive index (n D ) Follow up, add a small amount of mel...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Viscosityaaaaaaaaaa
Densityaaaaaaaaaa
Login to view more

Abstract

An incombustible sandwiched material for the thermal insulation of wall, ceiling, ship, chemical container, pipeline, etc is composed of 5 layers including surficial aluminium foil layers or aluminium foil-fibre cloth layers and sandwich layers for phenolic foam. Its preparing process includes such steps as synthesizing the foaming phenolic resin, preparing phenolic foam, mixing foaming phenolic resin, surfactant and flame retardant, adding foaming agent and solidifying agent, foaming solidifying, making the sandwich material, surface treating, coating, cutting, adhering, drying and trimming.

Description

(1) Technical field [0001] The invention relates to a non-combustible grade A phenolic foam composite sandwich material and a preparation method thereof. (2) Background technology [0002] Phenolic foam sandwich materials have been widely used in building air-conditioning insulation pipes due to their low thermal conductivity, good fire resistance, less smoke when burning, non-toxic, low water absorption, and fluorine-free foaming. However, it is no longer suitable for occasions that require higher fire performance, such as high-end hotels, high-rise buildings, ships, and warships. [0003] CN 02108279 patent application discloses an aluminum foil-phenolic foam sandwich composite board and its production process, which uses less flame retardant, and the flame retardant effect is not obvious, and the produced aluminum foil-phenolic foam sandwich composite board can only Reach flame retardant B1 level. US 4,681,902 patent mixes halogenated diphenyl ether (70% W / W) and organo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B32B3/22B32B15/08B32B15/14
Inventor 汪坤明林志祥江积旺
Owner 厦门高特高新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap