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Foamable refractory coating composition

A technology of fire-resistant coatings and compositions, applied in fire-resistant coatings, epoxy resin coatings, coatings, etc., can solve the problems of increased gas harmfulness and reduced fire-resistant performance, achieve reduced gas harmfulness, and improve long-term fire-resistant performance Effect

Active Publication Date: 2021-05-25
KCC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the phosphorus-based flame retardant used in the invention, the content of TPP (Triphenylphosphate, triphenyl phosphate) is more than 21% by weight, and the thermal decomposition temperature is less than 250°C. Oxygen resin gasifies at a lower temperature, so although the initial foaming is improved, but when the TPP content is large, the gas harmfulness increases and the long-term fire resistance performance decreases

Method used

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  • Foamable refractory coating composition

Examples

Experimental program
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Effect test

Embodiment

[0045] After preparing the foamable fire-resistant coating compositions of Examples 1 to 3 and Comparative Examples 1 to 3 with the compositions shown in Table 1 below, the fire-resistant performance and gas hazard were evaluated.

[0046] [Table 1]

[0047] (weight%)

[0048]

[0049] Epoxy resin: Bisphenol A type resin, equivalent weight 182-192g / eq, viscosity 11,000-14,000cps, maximum color 25APHA, maximum hydrolyzable chlorine content 300ppm, weight average molecular weight 100-400

[0050] Curing resin: amide resin, viscosity 300~600cps, color (#G) up to 11, amine value 400~500mgKOH / g, active hydrogen equivalent 50~150g / eq

[0051] Foaming agent: melamine

[0052] Acid Catalyst: Ammonium Polyphosphate

[0053] Phosphorus-based flame retardant #1 (liquid): isopropylated triphenyl phosphate (TPP content > 21% by weight, thermal decomposition temperature less than 250°C (TGA heating loss less than 5%))

[0054] Phosphorus-based flame retardant #2 (liquid): isopropylat...

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Abstract

The present invention relates to a kind of foamable refractory coating composition, and described foamable fireproof coating composition comprises epoxy resin, curing resin, flame retardant, blowing agent, acid catalyst and fiber, especially uses triphenyl phosphate The flame retardant with a content of 20% by weight or less and a thermal decomposition temperature of 250° C. or more can reduce the harmfulness of the gas, impart flexibility to the foam layer, prevent cracks from occurring in the carbonized layer, and improve long-term fire resistance.

Description

technical field [0001] This invention relates to foamable refractory coating compositions. Background technique [0002] Oil fires occurring in marine structures, workshops, etc. have the characteristics that the temperature rises sharply to about 945°C within 5 minutes at the time of fire. As refractory coatings in areas where oil fires are likely to occur, cured epoxy-based refractory coatings are mainly used, but existing refractory coatings have the disadvantage of releasing a large amount of harmful gas when the coating film expands. [0003] The following three US patents are recent technologies that have become epoxy-based refractory coatings. [0004] U.S. Patent No. 4,529,467 proposes a solvent-free epoxy refractory coating. When a fire occurs, when the coating expands, zinc (Zn) will form a foaming layer with very small pores during the burning process, thereby forming a foaming layer that can Improves thermal insulation properties and adhesion to substrates. Ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/18C09D163/00C09D7/63C09K21/12
CPCC09D5/18C09D163/00C09K21/12C09D7/40
Inventor 韩相贤严景一郑锡熙
Owner KCC CORP