Novel intumescence powder steel structured fireproof paint and preparation method thereof

A fire retardant coating and intumescent technology, applied in the field of new intumescent powder steel structure fire retardant coating and its preparation, can solve problems such as poor dispersibility, and achieve the effects of simple process, long fire resistance time and high thickness

Inactive Publication Date: 2012-10-10
应急管理部四川消防研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at the above technical problems and provides a solution that can avoid the disadvantages of poor dispersibility. The use of silica sol and styrene-acrylic emulsion in combination with a flame retardant will result in a dense carbon layer after high-temperature combustion and good bonding performance with the base steel. , and the flame retardant and the binder are packaged separately, which solves the environmental problems such as VOC caused by organic solvents, and at the same time greatly saves the transportation cost of the coating. A new type of intumescent powder steel structure fireproof coating and its preparation method

Method used

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  • Novel intumescence powder steel structured fireproof paint and preparation method thereof

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Effect test

Embodiment 1

[0022] Preparation of one-component intumescent flame retardant: mix dipentaerythritol and phosphoric acid with a molar ratio of 1:2.5, and calcium chloride of 1% by weight of dipentaerythritol as a catalyst, and heat to 120-150°C. Slowly add phosphorus pentoxide of 3-10% by phosphoric acid mass, react for 1.5-3 hours, then add melamine with phosphoric acid molar ratio of 1:1.5-1:2.5 and mix, and crush the solid to The powder less than 200 meshes is put into an oven and reacted at 180°C for 3-6 hours to obtain a one-component intumescent flame retardant of phosphate ester melamine salt, which is environmentally friendly and non-toxic after use.

[0023] Add 13-27 parts by weight of inorganic filler into a gravity-free mixer and mix evenly, then add 5-10 parts of expanded graphite and 30-80 parts of expanded flame retardant, mix well and pack into bags; add silica sol into the reaction kettle Stir, then add styrene-acrylic emulsion, the ratio of addition is calculated as 1:3-3:...

Embodiment 2

[0028] In terms of parts by weight, add 2.6 parts of inorganic filler titanium dioxide and 11.1 parts of calcium carbonate into a gravity-free mixer and mix evenly, then add 6 parts of expanded graphite and 33.3 parts of expanded flame retardant, mix them evenly and pack them into bags; put 7.4 parts of silica sol Add it into the reaction kettle for stirring, then add 14.8 parts of styrene-acrylic emulsion, mix and stir for 40 minutes, and then pack it into a barrel; mix the powder coating and binder at the construction site, add 22.2 parts of water to make it evenly ready to be used for spraying or Brushed intumescent powder steel structure fireproof coating.

Embodiment 3

[0030] In terms of parts by weight, add 7.2 parts of inorganic filler titanium dioxide and 11.5 parts of calcium carbonate into a gravity-free mixer and mix evenly, then add 7.2 parts of expanded graphite and 30.2 parts of expanded flame retardant, mix them evenly and pack them into bags; put 15.8 parts of silica sol Add it into the reaction kettle for stirring, then add 5.8 parts of styrene-acrylic emulsion, mix and stir for 40 minutes, and then pack it into a barrel; mix the powder coating and binder at the construction site, add 18 parts of water to make it evenly ready to be used for spraying or Brushed intumescent powder steel structure fireproof coating.

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Abstract

The invention relates to construction paint and a preparation method of the construction paint, and in particular relates to novel intumescence powder steel structured fireproof paint and a preparation method of the novel intumescence powder steel structured fireproof paint. The paint comprises the following raw materials in parts by weight: 35 to 90 parts of a flame retardant, 13 to 27 parts of an inorganic filler, and 15 to 30 parts of a binder, wherein the flame retardant is a mixture of expanded graphite and an intumescent flame retardant; the inorganic filler is a mixture of titanium dioxide, calcium carbonate and aluminum silicate cellucotton; and the binder is a mixture of silica sol and styrene-acrylic emulsion. The fireproof paint prepared in the invention has excellent fire resistance duration and long fireproofing time. According to the invention, a char forming agent, a foaming agent and a carbonizing catalyst are integrated in a monocomponent intumescent flame retardant, so that the problem that multiple fireproof components in a conventional fireproof paint are difficult to separate can be solved. The product has strong binding capability with a steel structure, is prevented from being broken or separated by flame, and has high fire resistance.

Description

technical field [0001] The invention relates to a building coating and a preparation method thereof, in particular to a novel expansion type powder steel structure fireproof coating and a preparation method thereof. Background technique [0002] There are many types of fire retardant coatings for steel structures, which can be divided into solvent type, water soluble type and powder type according to their material forms, thick type, thin type and ultra-thin type according to the coating thickness, and expansion type and ultra-thin type according to the fire protection mechanism. Non-intumescent. Solvent-based fireproof coatings will emit volatile organic compounds (VOCs) to the environment, which are harmful to the human body and pollute the environment, and will eventually be eliminated; while water-soluble fireproof coatings still need to be improved in terms of their fireproof performance and physical and chemical properties; The coating does not contain solvents and ha...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D125/14C09D5/18C09D5/03C07F9/6521
Inventor 张翔张帆尹朝露叶诗茂
Owner 应急管理部四川消防研究所
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