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Pentane spraying type polyurethane combined polyether and preparation method thereof

A technology combining polyether and polyurethane, which is applied in the field of rigid polyurethane foam, can solve problems such as the decrease of expansion ratio and foam physical properties, poor dimensional stability of foaming agent, and great influence on foam flame retardant effect, and achieve overall density and comprehensive Low cost, improved dimensional stability of the system, and the effect of solving the problem of blowing agent replacement

Active Publication Date: 2021-04-23
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the blowing agent of spray-type combination polyether uses monofluorodichloroethane 141b. The damage of this blowing agent to the ozone layer is 1 / 10 of that of CFC-113, but it will also cause certain damage to the ozone layer, which belongs to ODS substances.
At the same time, the dimensional stability of 141b foaming agent is worse than that of CFC-113, and the foaming ratio and foam physical properties drop more. The market price of 141b hovers around 25,000 yuan, and the overall cost is relatively high.
Cyclopentane, n-pentane, isopentane and other C5 foaming agents have good foaming effect and no damage to the ozone layer. Poor, at the same time the flash point is low, it belongs to flammable and explosive materials, after adding pentane to the system, it will have a great impact on the flame retardant effect of the foam, and it cannot be used in the spray system at present

Method used

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  • Pentane spraying type polyurethane combined polyether and preparation method thereof
  • Pentane spraying type polyurethane combined polyether and preparation method thereof
  • Pentane spraying type polyurethane combined polyether and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh polyether polyol R5118G: 35 parts; polyester polyol PS2352: 45 parts; polyether polyol R403: 10 parts; polyether polyol C310: 10 parts; silicone oil L6688: 2 parts; water: 3.4 parts; A1: 4 parts; PC5: 2 parts; A33: 2.7 parts; PC41: 1.2 parts; TMR-2: 0.4 parts; CA50: 1.2 parts; TCPP: 40 parts; TEP: 20 parts; Isopentane: 9.5 parts.

[0029] Put the weighed raw materials into the reaction kettle in turn, stir at room temperature for 0.5 hours, take them out for inspection, meet the process parameters, and produce foam, that is, the pentane spray type polyurethane combined polyether, take it out from the reaction kettle and put it into a barrel for storage , as component A, component A is clear and transparent.

[0030] Component A and component B (polymethylene polyphenyl isocyanate) are mixed according to the weight ratio of A:B=100:110 and sprayed to make pentane spray polyurethane foam, and the product quality index is tested.

Embodiment 2

[0032] Weigh polyether polyol R8345: 40 parts; polyester polyol PS2412: 20 parts, polyether polyol R403: 5 parts; polyether polyol C310: 35 parts; silicone oil S1087: 2 parts; water: 3.3 parts; A1: 2 parts; PC5: 2 parts; A33: 3 parts; PC41: 2 parts; TMR-2: 0.4 parts; CA50: 2.1 parts; TCPP: 60 parts; TEP: 15 parts;

[0033] Put the weighed raw materials into the reaction kettle in turn, stir at room temperature for 0.5 hours, take them out for inspection, meet the process parameters, and produce foam, that is, the pentane spray type polyurethane combined polyether, take it out from the reaction kettle and put it into a barrel for storage , as component A, component A is clear and transparent.

[0034] Component A and component B (polymethylene polyphenylisocyanate) are mixed according to the weight ratio of A:B=100:130 and sprayed to make pentane spray polyurethane foam, and the product quality index is tested.

Embodiment 3

[0036] Weigh polyether polyol R8345: 5 parts; polyester polyol B175: 85 parts, polyether polyol R403: 5 parts; polyether polyol C310: 5 parts; silicone oil S1087: 2 parts; water: 3.6 parts; A1: 2 parts; PC5: 2 parts; A33: 3 parts; PC41: 2 parts; TMR-2: 0.9 parts; CA50: 2.1 parts; TCPP: 60 parts; TEP: 20 parts; Isopentane: 9 parts.

[0037] Put the weighed raw materials into the reaction kettle one by one, stir at room temperature for 0.5 hours, take them out for inspection, meet the process parameters, and produce foam, that is, the pentane spray type polyurethane combined polyether, take it out from the reaction kettle and put it into a barrel for storage , as component A, component A is clear and transparent.

[0038] Component A and component B (polymethylene polyphenylisocyanate) are mixed according to the weight ratio of A:B=100:130 and sprayed to make pentane spray polyurethane foam, and the product quality index is tested.

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Abstract

The invention relates to a preparation method and application method of pentane spraying type polyurethane combined polyether. The pentane spraying type polyurethane combined polyether is prepared from polyether polyol A, polyester polyol B, polyether polyol C, polyether polyol D, a catalyst, a flame retardant, a foam stabilizer, a chemical foaming agent and a pentane foaming agent. Compared with a conventional product, the combined polyether solves the problems of foaming agent replacement, flame retardance after replacement and foaming viscosity in the spraying industry, has the characteristics of environment-friendly foaming agent and no ODS substance, meanwhile, the overall density and the comprehensive cost of the product are lower than those of a conventional 141b type product, and the comprehensive performance of the product meets the performance requirements of GB50404-2017.

Description

technical field [0001] The invention relates to the technical field of rigid polyurethane foam, in particular to a pentane spray-coated polyurethane composite polyether and a preparation method thereof. Background technique [0002] Polyurethane foam is currently the best of all thermal insulation materials, widely used in heating pipelines, petrochemical pipelines, transportation, refrigerator freezers, building insulation, aviation and military, and many other aspects. Due to the rapid foaming process of polyurethane spray products, the cells are extremely fine, the thermal conductivity can reach below 0.020W / m·k (23°C), and the thermal insulation performance is excellent. At the same time, because the foaming process is attached to the substrate, It is tightly bonded to the substrate, has good adhesion, and has excellent overall performance with the substrate; in addition, the spraying construction process is simple in processing technology and convenient in construction....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/50C08G18/42C08J9/14C08K5/521C08G101/00C08L75/04
CPCC08G18/4018C08G18/482C08G18/5024C08G18/4883C08G18/4208C08J9/141C08K5/521C08J2375/04C08J2203/14Y02P20/10
Inventor 殷晓峰王树庆李金伟李宗儒
Owner SHANDONG INOV NEW MATERIALS CO LTD
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