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Combined polyether for continuous production of PIR block foam, as well as preparation method and application of combined polyether

A combination of polyether and bulk technology, applied in the field of polyurethane, can solve the problems of poor dimensional stability of foam, decrease of foam flame retardancy, high thermal conductivity, etc., and achieve the effect of stable foam quality, high compressive strength and low thermal conductivity

Active Publication Date: 2016-11-30
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flame retardancy of the foam using pentane is reduced, the dimensional stability of the foam is worse than that of other blowing agents, and the thermal conductivity is higher than that of 141b

Method used

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  • Combined polyether for continuous production of PIR block foam, as well as preparation method and application of combined polyether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] To prepare 100 kg of component A, weigh the following raw materials:

[0044] Polyester polyol PE-B175: 50 kg, polyether polyol NJ-410HN: 20 kg, foam stabilizer L-5568: 2 kg, deionized water: 1.4 kg, PC8 (N,N-dimethylcyclohexyl Amine): 1 kg, JXP508: 1.4 kg, JXP509: 0.8 kg, TMR-35: 1.4 kg, FR606: 11 kg, CP: 11 kg.

[0045] Put PE-B175 and NJ-410HN into the reaction kettle, add L-5568, deionized water, PC8, JXP508, JXP509, TMR-35, FR606, CP, stir at room temperature for 1 hour, take it out for inspection, and meet the settings Foaming parameters, that is, the qualified product of component A, is taken out from the reaction kettle and put into barrels for storage.

[0046] Mix components A and B according to the weight ratio of A:B=100:170, and mix them evenly through foaming equipment to make a high-density PIR material for cold-keeping pipe support. The test product indicators are as follows:

[0047] Overall density: 43kg / cm 3

[0048] Thermal conductivity: 0.0231W / ...

Embodiment 2

[0056] To prepare 100 kg of component A, weigh the following raw materials:

[0057] Polyester polyol PE-B175: 60 kg, polyether polyol NJ-410HN: 10 kg, foam stabilizer L-5568: 2.0 kg, deionized water: 1.5 kg, PC8 (N,N-dimethylcyclohexyl Amine): 1.5 kg, JXP508: 1.4 kg, JXP509: 0.8 kg, TMR-35: 1.4 kg, FR606: 11 kg, CP: 10.4 kg.

[0058]Put PE-B175 and NJ-410HN into the reaction kettle, add L-5568, deionized water, PC8, JXP508, JXP509, TMR-35, FR606, CP, stir at room temperature for 1 hour, take it out for inspection, and meet the settings Foaming parameters, that is, the qualified product of component A, is taken out from the reaction kettle and put into barrels for storage.

[0059] Mix components A and B according to the weight ratio of A:B=100:170, and mix them evenly through foaming equipment to make a PIR type thermal insulation material for deep cooling. The test product indicators are as follows:

[0060] Overall density: 42.8kg / cm 3

[0061] Thermal conductivity: 0.0...

Embodiment 3

[0069] To prepare 100 kg of component A, weigh the following raw materials:

[0070] Polyester polyol PE-B175: 45 kg, polyether polyol NJ-410HN: 20 kg, foam stabilizer L-5568: 2.0 kg, deionized water: 1.5 kg, PC8 (N,N-dimethylcyclohexyl Amine): 1.2 kg, JXP508: 1.5 kg, JXP509: 0.8 kg, TMR-35: 1.5 kg, FR606: 14.5 kg, CP: 12 kg.

[0071] Put PE-B175 and NJ-410HN into the reaction kettle, add L-5568, deionized water, PC8, JXP508, JXP509, TMR-35, FR606, CP, stir at room temperature for 1 hour, take it out for inspection, and meet the settings Foaming parameters, that is, the qualified product of component A, is taken out from the reaction kettle and put into barrels for storage.

[0072] Mix components A and B according to the weight ratio of A:B=100:175, and mix them evenly through foaming equipment to make a PIR type thermal insulation material for deep cooling. The test product indicators are as follows:

[0073] Overall density: 42.6kg / cm 3

[0074] Thermal conductivity: 0....

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Abstract

The invention belongs to the technical field of polyurethane, and particularly relates to combined polyether for continuous production of PIR block foam, as well as a preparation method and application of the combined polyether. The combined polyether consists of a component A and a component B, wherein the component A consists of polyester polyol, polyether glycol, a foam stabilizing agent, a chemical foaming agent, a catalyst, a fire retardant and a physical foaming agent, and the component B is polymethylene polyphenyl polyisocyanate. While in use, materials in the component A and materials in the component B are mixed through a high-pressure foaming machine, so that PIR high-flame-resistant block foam can be in continuous production. According to the combined polyether disclosed by the invention, the production process of the materials in the component A is simple, and the discharge of three wastes is not generated; the production of a PIR type heat insulation material through the materials in the component A and the materials in the component B is simple in operation technology and easy to operate, the volatilization of gas destroying an atmospheric layer is not generated, the product quality is stable, the production cost is low, and when the environmental protection purpose is achieved, products are good in low-temperature size stability, good in flame resistance, uniform in density distribution, low in thermal conductivity, high in compressive strength and low in water absorption.

Description

technical field [0001] The invention belongs to the technical field of polyurethane, and in particular relates to a combined polyether for continuous production of PIR bulk foam and its preparation method and application. Background technique [0002] Polyisocyanurate foam (PIR foam) is formed by reacting polyether polyol or polyester polyol with isocyanate. Under the action of the trimerization catalyst, the excess isocyanate reacts to form a six-membered ring, which not only provides crosslinking to the foam, but also promotes combustion and coking into charcoal through its own six-membered ring molecular structure, which improves the fire resistance of the foam system. Compared with polyurethane PUR foam, polyisocyanurate foam has better dimensional stability, lower thermal decomposition rate, and higher mechanical strength. By adjusting the concentration of polyisocyanate and its formula, the fire performance can reach B1 level. [0003] Referring to the international ...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/50C08G18/42C08J9/14C08J9/08C08L75/06C08K5/521C08G101/00
CPCC08G18/4018C08G18/4208C08G18/5021C08G18/7664C08J9/141C08J2203/02C08J2203/14C08J2203/184C08J2205/052C08J2375/06C08K5/521C08L75/06C08L2201/02C08L2201/04C08L2201/08C08L2203/14C08L2203/18C08G2110/005
Inventor 徐业峰朱文静李明友念以亭
Owner SHANDONG INOV NEW MATERIALS CO LTD
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