Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of epoxy resin expansion type fireproof coating for steel structure and preparation method thereof

A technology of epoxy resin and fireproof coating, which is applied in the direction of epoxy resin coating, fireproof coating, coating, etc., to achieve the effects of enhanced fireproof performance, excellent fireproof performance and physical and chemical properties, and high fireproof efficiency

Active Publication Date: 2019-06-14
XIAMEN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention aims to solve the deficiencies of the existing fireproof coatings for steel structures, and proposes an epoxy resin expansion type fireproof coating for steel structures and its preparation method

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of epoxy resin expansion type fireproof coating for steel structure and preparation method thereof
  • A kind of epoxy resin expansion type fireproof coating for steel structure and preparation method thereof
  • A kind of epoxy resin expansion type fireproof coating for steel structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1: Preparation of modified polyethyleneimine fire protection additive

[0043] Add 100g of polyethyleneimine (PEI) with a molecular weight of 600-70000, 138g of diethyl phosphite and 100ml of dichloromethane into the reaction kettle, and add 185g of carbon tetrachloride and 122g of Triethylamine, after reacting for 24h, was rotary evaporated to obtain the crude product. The product was dissolved in 500 ml of distilled water, dialyzed to remove impurities, and then freeze-dried to obtain the final product modified polyethyleneimine (PEI-DEPP).

[0044] Depend on figure 1 of 1 HNMR nuclear magnetic spectrum and figure 2 , image 3 By comparison, it can be seen that the amine group proton peak of polyethyleneimine PEI appeared at 2-3ppm, but there was no P-H proton peak of diethyl phosphite at 7.66ppm and 5.93ppm, and there were diethylphosphite at 1.23ppm and 3.91ppm respectively. Methyl and methylene peaks of ethyl esters. Explain the successful synthesis of ...

Embodiment 2

[0053] Step 1: Preparation of modified polyethyleneimine fire protection additive

[0054] Add 100g of polyethyleneimine with a molecular weight of 600-70000, 125g of diethyl phosphite and 100ml of dichloromethane into the reaction kettle, and add 185g of carbon tetrachloride and 122g of triethylamine dropwise within 6 hours under ice bath conditions , After reacting for 24h, the crude product was obtained by rotary evaporation. The product was dissolved in 500 ml of distilled water, dialyzed to remove impurities, and then freeze-dried to obtain the final product modified polyethyleneimine.

[0055] Step 2: Dissolve 450g epoxy resin in the mixed solvent of 120g xylene, 80g n-butanol and 40g butyl acetate, then add dehydration charcoal catalyst that is 340g ammonium polyphosphate and 170g melamine phosphate, blowing agent is 190g melamine And 95g urea, carbon forming agent is 120g pentaerythritol and 60g mannitol, 41g expandable graphite, pigment and filler are 30g titanium di...

Embodiment 3

[0062] Step 1: Preparation of modified polyethyleneimine fire protection additive

[0063] Add 100g of polyethyleneimine with a molecular weight of 600-70000, 138g of diethyl phosphite and 100ml of dichloromethane into the reaction kettle, and add 185g of carbon tetrachloride and 122g of triethylamine dropwise within 6 hours under ice-bath conditions , After reacting for 24h, the crude product was obtained by rotary evaporation. The product was dissolved in 500 ml of distilled water, dialyzed to remove impurities, and then freeze-dried to obtain the final product modified polyethyleneimine.

[0064] Step 2: 600g epoxy resin is dissolved in the solvent that 141g xylene, 94g n-butanol, 47g butyl acetate mix, then add dehydration charcoal catalyst namely 420g ammonium polyphosphate and 210g melamine phosphate, foaming agent is 180g melamine Mix with 90g urea, char-forming agent, 140g pentaerythritol and 70g mannitol, 50g expandable graphite, pigments and fillers namely 45g titan...

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
flame retardantaaaaaaaaaa
thicknessaaaaaaaaaa
heightaaaaaaaaaa
Login to View More

Abstract

Provided are an epoxy-resin intumescent fire-resistant coating for steel structure use, and a method for fabrication thereof, belonging to the field of functional coatings. The present intumescent fire-resistant coating consists of two components: A and B; component A mainly comprises a film-forming substance, dehydration and carbon-forming catalyst, a blowing agent, a carbon-forming agent, a promoter, a solvent, and a pigment and filler; component B mainly comprises a curing agent, modified polyethylenimine, a solvent, and a promoter. The fire-resistant coating uses diethyl-phosphite modified polyethylenimine as a fire-resistant additive (PEI-DEPP) and compound technology, effectively increasing the expansion ratio of the carbon layer and the quality of the carbon layer after the fire-resistant coating is burned. The coating has excellent fire resistance, adhesive force, water resistance, heat resistance, corrosion resistance, and acid resistance, and not only may be used for a high-rise steel structure building, but is also suitable for use in fire protection of steel structures in harsh environments, such as the marine equipment and petrochemical industries.

Description

technical field [0001] The invention belongs to the field of fireproof coatings, and relates to an epoxy resin fireproof coating, in particular to an epoxy resin expansion type fireproof coating for steel structures and a preparation method thereof. Background technique [0002] With the continuous development of economy, society and science and technology, the building materials used by human beings are constantly updated. Compared with brick-concrete structures, steel structures have obvious advantages in environmental protection, energy saving, high efficiency, and factory production, so they gradually replace reinforced concrete as the main building form. According to the requirements of the national standard "Code for Fire Protection Design of Buildings" GB 50016-2014, fire protection must be carried out for steel structure buildings. Intumescent fireproof coatings are currently widely used as fireproofing for steel structures. Intumescent fireproof coatings expand and...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/18C09D7/61C09D7/63C08G73/04
CPCC08L2201/02C08L2201/22C08L2205/035C09D5/185C09D7/61C09D7/63C09D7/70
Inventor 戴李宗邵志恒柳超黄陈曾碧榕许一婷罗伟昂袁丛辉陈国荣
Owner XIAMEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com