Preparation method of rigid spraying polyurethane blended materials for refrigeration house

A technology for spraying polyurethane and rigid foam, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor thermal insulation effect, and achieve the effect of small dimensional change rate, simple industry and high labor productivity

Inactive Publication Date: 2012-01-11
无锡双象新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, since the insulated objects on site can be directly constructed, there will be no assembly gaps caused by other materials, resulting in poor thermal insulation effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Example 1: A preparation method of hard foam spray polyurethane composite material for cold storage

[0020] The formula of white material is as shown in table 1:

[0021] The proportioning ratio of each raw material in the white material of table 1

[0022] Raw material composition

parts by mass

Raw material composition

parts by weight

Polyether polyol GR-4110

60

T-12

0.1

Polyether polyol GR-403

15

DMCHA

2.8

Black material PS-3152

25

Foam stabilizer AK-8805

1.5

Glycerin

1.0

Flame retardant DMMP

10

water

0.6

Flame retardant TCPP

10

HCFC-141b

35

[0023] Control the material temperature of the white material and the black material to be 23°C, and the mechanical stirring speed is 2000r / min. The white material and the black material are mixed in a high-pressure spraying machine at a mass ratio of 100:110, sprayed ...

example 2

[0026] Example 2: A preparation method of hard foam spray polyurethane composite material for cold storage

[0027] The formula of white material is as shown in table 3:

[0028] The ratio of each raw material in the white material of table 3

[0029] Raw material composition

parts by mass

Raw material composition

parts by weight

Polyether polyol GR-4110

55

T-12

0.2

Polyether polyol GR-403

20

DMCHA

2.0

Black material PS-3152

25

Foam stabilizer AK-8805

2.0

Glycerin

0.8

Flame retardant DMMP

15

water

1.0

Flame retardant TCPP

5

HCFC-141b

28

[0030] Control the temperature of white material and black material at 24°C, and the mechanical stirring speed is 2500r / min. The white material and black material are mixed in a high-pressure spraying machine at a mass ratio of 100:112, sprayed on the wall, and foamed by itself. , t...

example 3

[0033] Example 3: A preparation method of hard foam spray polyurethane composite material for cold storage

[0034] The formula of white material is as shown in table 5:

[0035] The proportioning ratio of each raw material in the white material of table 5

[0036] Raw material composition

parts by mass

Raw material composition

parts by weight

Polyether polyol GR-4110

50

T-12

0.15

Polyether polyol GR-403

10

DMCHA

2.5

Black material PS-3152

40

Foam stabilizer AK-8805

1.8

Glycerin

0.8

Flame retardant DMMP

8

water

0.8

Flame retardant TCPP

16

HCFC-141b

33

[0037] Control the temperature of white material and black material to be 25°C, and the mechanical stirring speed is 3000r / min. The white material and black material are mixed in a high-pressure spraying machine at a mass ratio of 100:115, sprayed on the wall, and foam...

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Abstract

The invention relates to a preparation method of rigid spraying polyurethane blended material for a refrigeration house. The rigid spraying polyurethane blended material is prepared by using polyether glycol, polyester polyol, a cross-linking agent, a catalyst, a foam stabilizing agent, a foaming agent, a flame retardant and the like as white materials and using multisubunit, multibenzylalkyl and polyisocyanates as black materials, mixing the white materials and the black materials by using special equipment, reacting and spraying to form a finished product. The white materials and black materials are mixed and sprayed on a wall body under a certain condition, and automatically foamed and formed to prepare a polyurethane thermal insulation material. Therefore, the method has the advantages of simple industry, flexible construction, no need of moulds, high labor productivity, and is extremely suitable for surfaces with complicated shapes. Because of excellent thermal insulation performance, and small size change ratios, the use materials are ideal in the field of thermal insulation of the refrigeration house.

Description

technical field [0001] The invention relates to a coating used for spraying walls, in particular to a preparation method of a rigid foam spraying polyurethane composite material for cold storage. Background technique [0002] Rigid polyurethane foam has the advantages of low thermal conductivity, light weight, high specific strength, corrosion resistance, no water absorption, sound absorption, heat insulation, insulation, and high adhesion. In engineering, it is mainly used in large-area heat insulation projects, such as Insulation of cold storage etc. [0003] Large-scale cold storage is generally assembled with composite sandwich panels. This method is convenient and fast. The surface material is metal material with high strength and is not easy to deform after impact. The edge of the composite panel has an open seam structure, which is very convenient for assembly. The elastic sealant is fixed or the hard foam raw material is injected into the gap. After the reaction, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/42C09D175/08C09D175/06C09D7/12
Inventor 何天华刘敏朱晓华董文天
Owner 无锡双象新材料有限公司
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