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Environment-friendly flame-retardant polyurethane wood-imitation material

A wood imitation material and flame retardant technology, which is applied in the field of environmentally friendly flame retardant polyurethane wood imitation materials, can solve the problems of long demoulding time and poor flame retardant performance, and achieve short demoulding time, good flame retardant performance, and low Effects of harm to human health

Inactive Publication Date: 2012-07-11
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the polyurethane imitation wood materials on the market today have problems such as poor flame retardancy, volatile gas generation, and long demoulding time during production and processing (normal demoulding time is 15 to 20 minutes).

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The specific composition of component A is shown in the table below:

[0026] raw material name

parts by mass

NJ8307

65

NJ310

10

MN500

15

NJ303

10

B8444

2

h 2 o

0.9

Z-110

0.8

PT306

0.7

TMR-2

0.4

magnesium hydroxide

20

[0027] Component B is PM200, control the temperature of the mixed components A and B at 25±1°C, set the mechanical stirring speed at 3200 rpm, and mix and fully After stirring evenly, pour it into a mold with a constant temperature of 50°C, and open the mold after curing for 11 minutes to obtain a polyurethane imitation wood product.

[0028] The obtained product was placed at room temperature for more than 24 hours, and the performance test was carried out.

Embodiment 2

[0030] The specific composition of component A is shown in the table below:

[0031] raw material name

parts by mass

NJ8307

75

NJ310

8

MN500

17

B8444

2

h 2 o

0.3

Z-110

0.5

NMI

1.0

Tris(2-chloropropyl)phosphate

15

[0032] Component B is 44V20, control the temperature of the mixed components A and B at 25±1°C, set the mechanical stirring speed to 3200 rpm, and mix and fully After stirring evenly, pour it into a mold with a constant temperature of 50°C, and open the mold after curing for 10 minutes to obtain a polyurethane imitation wood product.

[0033] The obtained product was placed at room temperature for more than 24 hours, and the performance test was carried out.

Embodiment 3

[0035] The specific composition of component A is shown in the table below:

[0036] raw material name

parts by mass

NJ8307

75

DV125

25

B8444

1

LK221

1

h 2 o

1.0

Z-110

0.6

PT306

0.7

TMR-2

0.4

Dimethyl methyl phosphate

5

[0037] Component B is 44V20, control the temperature of the mixed components A and B at 25±1°C, set the mechanical stirring speed at 3200 rpm, and mix and fully After stirring evenly, pour it into a mold with a constant temperature of 50°C, and open the mold after aging for 12 minutes to obtain a polyurethane imitation wood product.

[0038] The obtained product was placed at room temperature for more than 24 hours, and the performance test was carried out.

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Abstract

The invention belongs to the field of chemical synthesis, and in particular relates to an environment-friendly flame-retardant polyurethane wood-imitation material, which is characterized by comprising a component A and a component B, wherein the component A consists of polyether polyalcohol, a foam stabilizer, a catalyst, a foaming agent and a flame retardant; and the component B is polymethylene polyphenyl polyisocyanate. A method for preparing the environment-friendly flame-retardant polyurethane wood-imitation material comprises the following steps of: mixing and stirring the component A and the component B, injecting the components into a constant-temperature die at the temperature of between 40 and 50 DEG C, reacting and curing for 10 to 13 minutes to obtain the environment-friendly flame-retardant polyurethane wood-imitation material. The invention has the advantages that due to the adoption of the reaction type catalyst, the generation of volatile gas is prevented, and the harm to the health of human bodies is reduced greatly; water is used as the single foaming agent instead of the conventional hydrochlorofluorocarbon (HCFC)-141B foaming agent, so that the consumption of an ozone layer is reduced effectively; and demolding can be performed after 10 to 13 minutes during production, so that the production efficiency is improved greatly.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to an environment-friendly flame-retardant polyurethane imitation wood material. Background technique [0002] At present, global wood processing resources are becoming increasingly tense, and countries impose strict restrictions on the development of forest resources, and the supply capacity of wood resources is significantly weakened. Therefore, research on synthetic wood has been going on in various countries. [0003] Today's imitation wood composite materials mainly include polyvinyl chloride, polystyrene, polyurethane, etc., polyvinyl chloride and polystyrene have problems such as large environmental pollution and low strength. The polyurethane imitation wood material has the advantages of uniform physical properties, light weight, non-absorbent, stable size, corrosion resistance, insect resistance, easy coloring, etc., and can directly form various complex struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/16C08G18/18C08G18/20C08J9/08C08K5/521C08K5/3492C08K3/22C08G101/00
Inventor 李心强于楠许凤华曹小伟倪军
Owner SHANGHAI DONGDA POLYURETHANE
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