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Low water absorption and high flame retardant composite phenolic foam thermal insulation material and production method thereof

A technology for thermal insulation materials and production methods, applied in the field of thermal insulation materials, can solve the problems of easy pulverization of the product surface, easy water absorption, and lower water absorption rate, and achieve the effects of good flame retardancy, improved brittleness, and prevention of fire spread

Inactive Publication Date: 2013-07-03
蓝云飞 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phenolic foam also has some shortcomings of its own, mainly in the form of brittle foam material, easy pulverization on the surface of the product, and easy water absorption (water absorption rate is about 5%) because the inside of the foam is not completely closed-cell structure, etc.
Although many research and development departments in the industry have been researching and improving, there is no good solution. At present, the main method is to increase the mechanical strength and reduce the water absorption by maintaining a high foam density.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present embodiment is a batch mode, specifically mixing 1kg of A-stage phenolic resin with 0.1kg of Tween-80 and 0.15kg of pentane to obtain mixture A; mixing mixture A with 0.12kg of phosphoric acid at a high speed to obtain Mixture B; Add mixture B and 1kg of flame-retardant EPS foam particles into a spiral stirring mixer and mix to obtain mixture C; put mixture C into the mold box, keep the temperature of the mold box at 70°C, and after 6 hours, the foamed The thermal insulation material is removed from the mold box and cooled to room temperature naturally. The resulting insulating material has a density of 35kg / m 3 , the thermal conductivity is 0.025W / M.K, the oxygen index is 41%, the compressive strength is 245Kpa, and the water absorption is less than 2%.

Embodiment 2

[0026]This embodiment is a continuous mode, specifically mixing 100kg of A-stage phenolic resin, 6kg of Tween-60, 5kg of polyethylene glycol, and 12kg of pentane to obtain mixture A, which is stored for subsequent use; Toluenesulfonic acid is continuously mixed in a high-speed stirring mixing head with a mass ratio of 1:0.15 to obtain a mixture B; the mixture B and flame-retardant EPS foam particles are continuously added to a multi-axis spiral type agitator at a mass ratio of 1:2 Mix in mixer, obtain mixture C; Spread mixture C continuously on the lower layer of non-woven fabric at the entrance of chain plate or steel belt type continuous phenolic foam curing forming equipment, adjust the running speed of continuous phenolic foam curing forming equipment, so that It takes 15 minutes for the mixture C to go through the whole process, and the temperature is kept at 60°C. The solidified and formed thermal insulation material is automatically moved out of the chain plate type cont...

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Abstract

The invention relates to a low water absorption and high flame retardant composite phenolic foam thermal insulation material and a production method thereof. The thermal insulation material is composed of phenolic resin foam and flame retardant expandable polystyrene foamed particles of different sizes. The flame retardant expandable polystyrene foamed particles of different sizes are uniformly dispersed in a phenolic resin foam matrix, the particles are mutually isolated, and the phenolic resin foam and the particles are closely combined together. The production method of the thermal insulation material includes: mixing A-stage resin, a surface active agent, a foaming agent, and a toughening agent evenly, adding a curing catalyst and conducting mixing again, and finally adding the flame retardant expandable polystyrene foamed particles of different sizes to undergo mixed foaming curing molding. The thermal insulation material provided in the invention has very low water absorption and good fireproof performance, as well as good mechanical strength.

Description

Technical areas: [0001] The invention relates to a low water absorption and high flame retardant composite phenolic foam thermal insulation material and a production method thereof, and belongs to the technical field of thermal insulation materials. technical background: [0002] Phenolic foam is a foam material obtained by foaming phenolic resin. It has the characteristics of light weight, high rigidity, good dimensional stability, chemical resistance, flame retardant, self-extinguishing, low smoke, flame penetration resistance, and fire resistance. No spillage, excellent heat resistance and other outstanding features. It is an ideal insulation and thermal insulation material in electrical appliances, instruments, construction, petrochemical and other industries. Therefore, it has received widespread attention and its application scope continues to expand. However, phenolic foam also has some shortcomings of its own, which are mainly reflected in the fact that the foam mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L25/06B29C44/02B29C44/20B29C44/60
Inventor 蓝云飞兰云起蓝天航
Owner 蓝云飞
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