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High-strength polyurethane heat preservation cushion block bi-component raw material for refrigeration house and preparation method thereof

A high-strength, polyurethane technology, which is used in the design of steel structure cold storage column foot insulation, heat preservation pads and its preparation, can solve the problems of cold storage steel structure column foot breaking cold, low thermal conductivity, high strength insulation pads, etc. To achieve the effects of rapid demoulding, reduced dosage, and increased rigidity

Active Publication Date: 2020-06-30
万华节能科技(烟台)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention discloses a two-component raw material of a high-strength polyurethane thermal insulation pad for cold storage and a preparation method thereof. The thermal insulation pad made of the two-component raw material has high strength, low thermal conductivity, and effectively solves the problem of broken steel structure columns in cold storage. cold question

Method used

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  • High-strength polyurethane heat preservation cushion block bi-component raw material for refrigeration house and preparation method thereof
  • High-strength polyurethane heat preservation cushion block bi-component raw material for refrigeration house and preparation method thereof
  • High-strength polyurethane heat preservation cushion block bi-component raw material for refrigeration house and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The two-component raw material of a high-strength polyurethane insulation pad for cold storage in this embodiment includes component A and component B.

[0030] A component:

[0031]

[0032]

[0033] Isocyanate component: polymethylene polyphenyl isocyanate PM-400 (Wanhua Chemical Group Co., Ltd.);

[0034] The mass ratio of isocyanate component to polyol component is 140:100;

[0035] 1,1,1-(Methylenetri(oxo))triethane accounts for 2.4% of polyol A component; blowing agent cis 1,1,1,4,4,4,- The proportion of hexafluoro-2-butene is 9.5%;

[0036] The measured moisture of polyol A component is 0.02%;

[0037] Production steps:

[0038] (1) Heat the 300*300*50 steel mold to 40 degrees;

[0039] (2) Pre-mix component A, stir for more than 15 minutes, and let stand overnight;

[0040] (3) The isocyanate component and the polyol component are mixed under a pressure of 28MPa, so that the polyol component and the isocyanate component are fully mixed, and then pour...

Embodiment 2

[0046] The two-component raw material of a high-strength polyurethane insulation pad for cold storage in this embodiment includes component A and component B.

[0047] A component:

[0048]

[0049]

[0050] Isocyanate component: polymethylene polyphenyl isocyanate PM-400 (Wanhua Chemical Group Co., Ltd.);

[0051] The mass ratio of isocyanate component to polyol component is 150:100;

[0052] 1,1,1-(Methylenetri(oxo))triethane accounts for 1.6% of polyol A component; blowing agent cis 1,1,1,4,4,4,- The proportion of hexafluoro-2-butene is 8.1%;

[0053] The measured moisture of polyol A component is 0.05%;

[0054] Production steps:

[0055] (1) Heat the 300*300*50 steel mold to 40 degrees;

[0056] (2) Pre-mix component A, stir for more than 15 minutes, and let stand overnight;

[0057] (3) The isocyanate component and the polyol component are mixed under a pressure of 26MPa, so that the polyol component and the isocyanate component are fully mixed, and then poured...

Embodiment 3

[0063] The two-component raw material of a high-strength polyurethane insulation pad for cold storage in this embodiment includes component A and component B.

[0064] A component:

[0065] type Brand and manufacturer / name parts by mass Specialty Polyether Polyols TD405 (Guodu Chemical (Kunshan) Co., Ltd.) 30 Specialty Polyether Polyols R2438A (Wanhua Chemical (Yantai) Rongwei Polyurethane Co., Ltd.) 40 Polyether polyol 635 (Zibo Nuoli Chemical) 30 Physical blowing agent cis 1,1,1,4,4,4,-hexafluoro-2-butene 12 silicone oil L-6642 (Momentive Advanced Materials Group) 2 water Distilled water or municipal tap water 0 catalyst Pentamethyldiethylenetriamine (Air Chemicals, USA) 0.6 catalyst N,N-Dimethylbenzylamine (Air Chemicals, USA) 0.9 catalyst Potassium acetate (Air Chemicals, USA) 1.5 Reactive viscosity reducer R2304 (Wanhua Chemical (Yantai) Rongwei Polyurethane Co., Ltd.) 6 Speci...

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Abstract

The invention relates to a high-strength polyurethane heat preservation cushion block bi-component raw material for a refrigeration house and a preparation method thereof, is particularly suitable forcolumn foot heat insulation in steel structure refrigeration house design, and belongs to the technical field of heat preservation cushion blocks and preparation methods thereof. The bi-component rawmaterial is formed by polymerizing an isocyanate component and a polyol component, and the mass ratio of the isocyanate component to the polyhydric alcohol component is (130-170):100. The polyol component comprises special polyether polyol, a special auxiliary agent, a physical foaming agent, a reactive viscosity reducer and other auxiliary agents, and the five auxiliary agents respectively account for 50%-70%, 1%-3%, 8%-12%, 4%-7% and 20%-35% of the total weight of the polyol component. The heat preservation cushion block prepared from the bi-component raw materials is high in strength and low in heat conductivity coefficient, and the problem of cold insulation of a steel structure column foot of a refrigeration house is effectively solved.

Description

technical field [0001] The invention relates to a two-component raw material of a high-strength polyurethane thermal insulation pad for cold storage and a preparation method thereof, which is particularly suitable for the heat insulation of column feet in the design of a steel structure cold storage, and belongs to the technical field of thermal insulation pads and preparation methods thereof. Background technique [0002] In the design of steel structure cold storage currently on the market, the column feet are directly connected to the reinforced concrete. The concrete has high strength and high compressive strength, but the thermal insulation performance is particularly poor, and the thermal conductivity is as high as 1.28w / m. increased energy consumption. [0003] In response to the above problems, the Domestic Trade Design Institute put forward the following new requirements for the insulation and compression resistance of the column foot pads in the cold storage design...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/50C08J9/14C08L75/08C08G101/00
CPCC08J9/146C08J9/0023C08G18/5027C08G18/482C08J2203/162C08J2375/08C08G2110/0066
Inventor 窦忠山王磊刘永亮高迎弟李晓静潘振勇李坤胡迎兰张峰王耀西余郁韩玲沙丰
Owner 万华节能科技(烟台)有限公司
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