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Fire-resistant coating fluid and coating process for expanded polystyrene insulation material

A technology of expanded polystyrene and thermal insulation materials, applied in the direction of fireproof coatings, coatings, epoxy resin coatings, etc., can solve problems such as increased bulk density, decreased thermal insulation performance, and products that do not meet national standards, so as to inhibit thermal decomposition and improve The effect of flame retardant and fire prevention

Active Publication Date: 2017-05-24
SHANTOU MINGRI ENVIRONMENTAL PURIFICATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the flame retardant and fireproof treatment of EPS insulation boards in each patent, the research on the coating agent or coating fireproof composition is concentrated, that is, the change in the process to achieve the purpose of fire prevention, and the coating is not mentioned. How fire-resistant compositions affect and control the burning behavior of flammable EPS
As a result of doing so, the microscopic view will lead to the polarization phenomenon that the non-combustible layer is always non-combustible and the combustible layer is still burning. From a macroscopic point of view, the oxygen index, combustion growth rate index, and The 600s total heat release and other indicators cannot be achieved, resulting in the product still not meeting the requirements of the national standard
Unless the amount of coated fireproof composition is increased in the product, so that the amount is much greater than the weight of EPS particles, this will cause the bulk density of the product to increase and the thermal insulation performance to decrease. What's worse, this method cannot achieve large-scale Industrial production

Method used

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  • Fire-resistant coating fluid and coating process for expanded polystyrene insulation material
  • Fire-resistant coating fluid and coating process for expanded polystyrene insulation material
  • Fire-resistant coating fluid and coating process for expanded polystyrene insulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Make the first mixture: take 60.00g of dimethyl methylphosphonate (DMMP), add 30.00g of resorcinol bis[bis(2,6-dimethylphenyl)phosphate] (PX200), and stir at room temperature until the solid flame retardant is completely dissolved to obtain the first mixture.

[0058] Take 100.00g of pre-made EPS beads (loose density 15Kg / m 3 ), add 30.00g of the first mixture, stir and coat evenly; then add 70.00g of the second mixture, stir and coat evenly again, and dry at 50-55°C at low temperature to obtain flame-retardant thermosetting coated EPS beads.

[0059] After the bead is formed according to the conventional scale pressing process, the bulk density is 30Kg / m 3 The EPS board has a limiting oxygen index (LOI value) of 28.5.

Embodiment 2

[0061] Make the first mixture: Take 60.00g of diethyl ethylphosphonate (DEEP), add 30.00g of resorcinol bis[bis(2,6-dimethylphenyl)phosphate] (PX200), and stir at room temperature until the solid flame retardant is completely dissolved to obtain the first mixture.

[0062] Take 100.00g of pre-made EPS beads (loose density 15Kg / m 3 ), add 30.00g of the first mixture, stir and coat evenly; then add 70.00g of the second mixture, stir and coat evenly again, and dry at 50-55°C at low temperature to obtain flame-retardant thermosetting coated EPS beads.

[0063] After the bead is formed according to the conventional scale pressing process, the bulk density is 30Kg / m 3 The EPS board has a limiting oxygen index (LOI value) of 28.2.

Embodiment 3

[0065] Make the first mixture: Take 60.00g of dimethyl propyl phosphonate (DMPP), add 30.00g of resorcinol bis[bis(2,6-dimethylphenyl)phosphate] (PX200), and stir at room temperature until the solid flame retardant is completely dissolved to obtain the first mixture.

[0066] Take 100.00g of pre-made EPS beads (loose density 15Kg / m 3 ), add 30.00g of the first mixture, stir and coat evenly; then add 70.00g of the second coating mixture, stir and coat evenly again, and dry at 50-55°C at low temperature to obtain flame-retardant thermosetting coated EPS beads.

[0067] After the bead is formed according to the conventional scale pressing process, the bulk density is 30Kg / m 3 The EPS board has a limiting oxygen index (LOI value) of 29.4.

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Abstract

The invention discloses a fireproof coating solution for an expanded polystyrene thermal insulation material. The fireproof coating solution is characterized by comprising a first mixture and a second mixture, wherein the first mixture is prepared from such components in parts by weight as 60-80% of liquid organic phosphorus flame retardant, 20-40% of solid organic phosphorus flame retardant and 0-10% of EPS low-temperature transformation carbonization catalyst; the second mixture is composed of two components A and B, the two of which are mixed when used, wherein the component A is prepared from 50-60% of thermosetting liquid epoxy resin, 10-20% of epoxy active diluent and 20-30% of sodium hydroxide filler in percentage by weight, while the component B is an epoxy resin curing agent. The fireproof coating solution has the characteristic of enabling the final product to have the level B1 indices specified in international GB8624-2012 at a relatively low volume-weight, and also is capable of enabling the final product to meet the standard of safe use specified in international GBT 29416-2012 without any lamination treatment; meanwhile, the large-scale industrial production of the expanded polystyrene thermal insulation material can be realized.

Description

technical field [0001] The invention relates to a fire-resistant coating liquid and a coating process, in particular to a fire-resistant coating liquid and a coating process for foamed polystyrene thermal insulation materials, and belongs to the technical field of thermal insulation and fireproof building materials. Background technique [0002] Building energy conservation occupies a pivotal position in energy-saving system engineering. With the continuous deepening of building energy conservation work in my country, building energy-saving methods of external wall insulation are becoming more and more popular. Polystyrene foam insulation board (abbreviation: polystyrene board, EPS board) currently accounts for 80% of the market share of external insulation materials due to its advantages in cost and performance. According to reliable information, this thermal insulation material will become the leading material in China's external wall thermal insulation market for a period...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/18C08J7/04C08L25/06
CPCC08J7/0427C08J2325/06C08J2463/00C08K5/523C08K5/527C08K5/5333C09D5/18C09D163/00
Inventor 赖承标
Owner SHANTOU MINGRI ENVIRONMENTAL PURIFICATION TECH CO LTD
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