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Organic polymer/inorganic particles composite materials

a technology of organic polymer and organic particles, applied in the direction of insulated cables, polyurea/polyurethane coatings, electrical equipment, etc., to achieve the effect of preventing direct heat transfer into interior parts, strengthening structural integrity, and strengthening mechanical properties of structures

Inactive Publication Date: 2007-06-28
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a fire resistant composite material made of inorganic particles dispersed in a polymer with reactive functional groups. The inorganic particles can react with the polymer to form a strong and durable composite material. This results in improved fire resistance and protection of interior materials. The process involves dispersing the inorganic particles in the polymer and reacting them to form a firm and stable surface char layer that prevents direct heat transfer. The composite material can be used in various applications where fire resistance is required.

Problems solved by technology

However, as shown in FIGS. 1c˜1d, after long term heating, the intumescent carbonization layer (or the heated part) will slightly crack and peel off, therefore the flame and heat can directly transfer to the interior materials and the fire resistant ability will vanish.

Method used

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  • Organic polymer/inorganic particles composite materials
  • Organic polymer/inorganic particles composite materials
  • Organic polymer/inorganic particles composite materials

Examples

Experimental program
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Effect test

first embodiment

[0017] Poly(ethylene-co-acrylic acid) containing R—COOH was dissolved or dispersed in water. Subsequently, inorganic particles Al(OH)3 with reactive functional groups M-OH were added to the polymer solution, and the mixture was stirred at 70˜90 for 20 minutes. 1 mm-thick mixture slurry was coated on a teflon sheet, and then placed in an oven, dried at 60? for 60 minutes, 80? for 60 minutes, 100? for 60 minutes, 120? for 30 minutes, 140? for 30 minutes, 160? for 30 minutes, 180? for 30 minutes, and finally, molded at 200? for 240 minutes.

[0018] As shown in FIG. 4, the sample layer 20 was removed from the teflon sheet (not shown), and placed on a piece of A4 size paper 10. A flame test was conducted on the surface of the sample layer 20 by butane gas torch 30 with flame temperature of 1000˜1200? (flame 40) for 30 seconds˜3 minutes. The result of the burning phenomenon of the piece of A4 size paper was summarized in table 1. There was no scorch observed on the piece of A4 size paper a...

second embodiment

[0020] Poly(ethylene-co-acrylic acid) containing R—COOH was dissolved or dispersed in water. Subsequently, inorganic particles Mg(OH)2 with reactive functional groups M-OH were added to the polymer solution, and the mixture was stirred at 70˜90 for 20 minutes. 1 mm-thick mixture slurry was coated on a teflon sheet, and then placed in an oven, dried at 60? for 60 minutes, 80? for 60 minutes, 100? for 60 minutes, 120? for 30 minutes, 140? for 30 minutes, 160? for 30 minutes, 180? for 30 minutes, and finally, molded at 200? for 240 minutes.

[0021] As shown in FIG. 4, the sample layer 20 was removed from the teflon sheet (not shown), and placed on a piece of A4 size paper 10. A flame test was conducted on the surface of the sample layer 20 by butane gas torch 30 with flame temperature of 1000˜1200? (flame 40) for 30 seconds˜3 minutes. The result of the burning phenomenon of the piece of A4 size paper was summarized in table 1. There was no scorch observed on the piece of A4 size paper a...

third embodiment

[0023] Poly(acrylic acid-co-maleic acid) containing R—COOH was dissolved or dispersed in water. Subsequently, inorganic particles Al(OH)3 with reactive functional groups M-OH were added to the polymer solution, and the mixture was stirred at 70˜90 for 20 minutes. 1 mm-thick mixture slurry was coated on a teflon sheet, and then placed in an oven, dried at 60? for 60 minutes, 80? for 60 minutes, 100? for 60 minutes, 120? for 30 minutes, 140? for 30 minutes, 160? for 30 minutes, 180? for 30 minutes, and finally, molded at 200? for 240 minutes.

[0024] As shown in FIG. 4, the sample layer 20 was removed from the teflon sheet (not shown), and placed on a piece of A4 size paper 10. A flame test was conducted on the surface of the sample layer 20 by butane gas torch 30 with flame temperature of 1000˜1200? (flame 40) for 30 seconds˜3 minutes. The result of the burning phenomenon of the piece of A4 size paper was summarized in table 1. There was no scorch observed on the piece of A4 size pape...

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Abstract

The invention discloses a fire resistant composite material comprising inorganic particles well dispersed in a polymer having reactive functional groups. The inorganic particles also contain reactive functional groups, originally or after surface modification, that can react with the corresponding reactive functional groups of the polymer to form organic / inorganic composite materials. When the composite material is burned or under fire exposure, the polymer forms a char layer and the inorganic particles radiate absorbed heat. The inorganic particles also strengthen the mechanical properties of the structure through the reaction between inorganic and organic materials, so that the formed char layer is firm and can maintain its structural integrity without peeling off or cracks, effectively preventing direct heat transferring into the interior parts. The fire resistant material is not only flame retardant but also protective toward the interior materials. As a result, the duration of fire resistant ability is tremendously improved.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an organic polymer / inorganic particles composite material showing excellent fire resistant performance under flame sources or fire exposure. Within this composite system, both of the organic polymer and the inorganic particles contain reactive functional groups. [0003] 2. Description of the Related Art [0004] Fire resistant or fire retardant materials can be used as the architecture or decorative materials. Architecture materials disclosed in TW 583,078 and TW 397,885 primarily comprise a stacked layer, serving as a fire resistant layer, made of nonflammable inorganic materials such as pearlite (or perlite), MgCl2, MgO, CaCO3 or cement. In addition, a stiff fire resistant laminate can be obtained from flexible substrates made of fibers or nonwovens blended with flame retardants, foaming agents and 50˜80? inorganic materials by weight. [0005] Fire resistant coatings, serving as decora...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08K3/26
CPCH01B3/302H01B3/303H01B3/40Y10T428/1405H01B3/447H01B7/295H01B3/441Y10T428/31547C08F8/42C08F210/02C08F220/06C08F222/02C08G18/831C08G59/1405C08K3/22C08K13/06C09D123/26C09D133/02C09D135/00C09D163/00C09D175/04C09K21/14H01B7/29H01B17/66C08G18/83C08G59/14
Inventor HUANG, YUNG-HSIANGHU, CHIH-MINGKAO, CHEI
Owner IND TECH RES INST