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Epoxy intumescent steel structure fire-retardant coating used in jet fire scene

A fire retardant coating, epoxy technology, applied in fire retardant coatings, epoxy resin coatings, anti-corrosion coatings, etc., can solve the problems of low fire resistance attenuation, inability to meet high corrosion resistance and other problems, achieve low fire resistance performance attenuation, improve compactness, The effect of reducing smoke production

Active Publication Date: 2021-08-31
BEIJING MUCHEN FIREPROOF INSULATION SPECIAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defect that the existing technology cannot meet the technical requirements of high corrosion resistance and low fire resistance attenuation, the present invention provides an epoxy intumescent fireproof coating for steel structures used in jet fire sites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Step 1: Preparation of Modified Epoxy Resin

[0046] 47 parts of bisphenol A epoxy resin E51, 37 parts of 300 mesh zinc powder, 10 parts of dispersant BYK111, 5 parts of nitrile rubber, 1 part of KH550 silane coupling agent. The material was weighed in parts by weight and put into a planetary ball mill at one time, and zirconium beads five times the weight of the material were added, and ball milled continuously for 60 hours to obtain a modified epoxy resin.

[0047] Step 2: Prepare Component A

[0048] According to the proportion in the first component, 30 parts of modified epoxy resin prepared in step 1, 40 parts of ammonium polyphosphate coated with catalyst epoxy resin, 15 parts of char-forming agent pentaerythritol, and flame retardant triaryl 20 parts of phosphate ester, 2 parts of aluminum silicate reinforcing fiber, 1.5 parts of BYK111 dispersant, 1.5 parts of BYK-065 defoamer, all raw materials are put into planetary mixer at one time, after mixing for 40 minu...

Embodiment 2

[0058] Step 1: Preparation of Modified Epoxy Resin

[0059] 55 parts of bisphenol F epoxy resin, 30 parts of 200 mesh titanium powder, 10 parts of dispersant BYK111, 6 parts of nitrile rubber, 2 parts of KH550 silane coupling agent. The material was weighed in parts by weight and put into a planetary ball mill at one time, and zirconium beads five times the weight of the material were added, and ball milled continuously for 60 hours to obtain a modified epoxy resin.

[0060] Step 2: Prepare Component A

[0061] According to the proportion in the first component, 25 parts of the modified epoxy resin prepared in step 1, 45 parts of ammonium polyphosphate with a molecular weight greater than 1500 coated with melamine formaldehyde as catalyst, 10 parts of dipentaerythritol char-forming agent, phosphoric acid 15 parts of tricresyl flame retardant, 1 part of carbon fiber reinforced fiber, 0.8 part of BYK102 dispersant, 0.2 part of BYK-066N defoamer All raw materials are put into th...

Embodiment 3

[0068] Step 1: Preparation of Modified Epoxy Resin

[0069] 40 parts of bisphenol F epoxy resin, 40 parts of 200 mesh zirconium powder, 5 parts of dispersant BYK111, 4 parts of nitrile rubber, 0.5 parts of KH550 silane coupling agent. The material was weighed in parts by weight and put into a planetary ball mill at one time, and zirconium beads five times the weight of the material were added, and ball milled continuously for 60 hours to obtain a modified epoxy resin.

[0070] Step 2: Prepare Component A

[0071] According to the proportion in the first component, 40 parts of modified epoxy resin prepared in step 1, 30 parts of ammonium polyphosphate with a molecular weight greater than 1500 coated by catalyst silane, 15 parts of char-forming agent pentaerythritol, 5 parts of dipentaerythritol 25 parts of flame retardant tris(xylene) phosphate, 5 parts of No. 52 chlorinated paraffin, 3 parts of sepiolite reinforcing fiber, 2 parts of BYK103 dispersant, 2 parts of BYK-065 defo...

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Abstract

An epoxy intumescent steel structure fire-retardant coating used in a jet fire scene comprises a component A and a component B in a weight ratio of (3-8):1. The component A comprises, by weight, 25-40 parts of modified epoxy resin, 30-45 parts of a catalyst, 10-20 parts of a charring agent, 15-30 parts of a flame retardant, 1-3 parts of reinforced fibers and 1-5 parts of an auxiliary agent. The component B comprises, in parts by weight, 40-50 parts of a curing agent, 1-6 parts of a curing accelerator, 30-40 parts of a foaming agent, 1-3 parts of a rheological additive and 2-5 parts of reinforced fibers. The modified epoxy resin is epoxy resin modified by metal or alloy powder through a mechanochemical method. The carbon layer of the coating has unexpected compressive strength and can resist erosion of jet fire. More importantly, the corrosion resistance of the steel structure fireproof coating resistant to the jet fire is greatly improved, and the fire smoke release amount of the coating is also remarkably reduced.

Description

technical field [0001] The invention belongs to the field of fireproof coatings, and relates to an intumescent epoxy resin-based fireproof coating (also known as a passive fireproof (PFP) coating), in particular to an intumescent steel structure fireproofing system that provides hydrocarbon jet fire protection for steel structures coating. Background technique [0002] Intumescent steel structure fire retardant coating formulations are usually designed according to the type of fire that the steel structure to be protected will face. For example, there are intumescent steel fire retardant coatings that provide protection against cellulose fires, there are intumescent steel fire protection coatings that provide protection against hydrocarbon pool fires, and there are intumescent steel fire protection coatings that provide protection against hydrocarbon jet fires. [0003] Cellulose fire is a fire caused by the burning of fibrous items such as wood, curtains, sofas, etc. The c...

Claims

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Application Information

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IPC IPC(8): C09D5/18C09D5/10C09D163/00C09D7/62
CPCC09D5/185C09D163/00C09D5/106C09D5/10C09D7/62C08K2003/323C08K2003/0893C08K2003/0881C08K9/10C08K3/32C08K3/08C08K5/523
Inventor 慕雷
Owner BEIJING MUCHEN FIREPROOF INSULATION SPECIAL MATERIALS CO LTD
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