Modified spray-coating flame-retardant type hard foam polyurethane material and preparation method thereof

A rigid polyurethane foam and flame-retardant technology, which is applied in the field of modified spraying flame-retardant rigid polyurethane foam and its preparation, can solve the problem of losing the integration of heat preservation and waterproofing of RPUF materials, the liquid material of component B is perishable, and rigid polyurethane foam To solve the problems such as the deterioration of the hard foam function of the material, to achieve excellent physical and mechanical properties, improve yellowing resistance, and improve flame retardant performance

Inactive Publication Date: 2017-10-20
TANGSHAN DONGFANG YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of adding a large amount of flame retardant to component B, making the liquid material of component B easy to break, resulting in the deterioration of the rigid foam function of the rigid polyurethane foam material, and then losing the integrated function of heat preservation and waterproof of the RPUF material question

Method used

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  • Modified spray-coating flame-retardant type hard foam polyurethane material and preparation method thereof

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preparation example Construction

[0036] Another aspect of the present invention provides a kind of preparation method of described modified spraying flame retardant rigid foam polyurethane material, the method comprises:

[0037] (1) The preparation of A component, first dehydrating the liquid flame retardant, then adding polyisocyanate for contact reaction, and finally degassing to obtain the A component;

[0038] (2) Preparation of component B, mixing polyether polyol, flame retardant silicone oil, environmentally friendly foaming agent, composite catalyst, flame retardant and C3-C6 trihydric alcohol mixture, and degassing to obtain component B;

[0039] (3) The A component and the B component are mixed for a foaming reaction, and matured to obtain the modified spray-coated flame-retardant rigid foam polyurethane material.

[0040]According to the present invention, preferably, the reaction conditions of the step (1) include: the dehydration conditions are dehydration at a speed of 800 to 1000r / min, a tempe...

Embodiment 1

[0050] (1) Preparation of component A: According to the designed formula ratio, add liquid flame retardant into a four-necked flask, dehydrate for 3 hours under vacuum conditions with a rotation speed of 800r / min, a temperature of 110°C, and -0.095MPa, and cool down to 55°C , and reduce the rotation speed to 400r / min, and turn off the vacuum, then add polyisocyanate, raise the temperature to 78°C, react for 2h, then cool down to 45°C, and debubble for 20min under the vacuum condition of -0.095MPa to obtain the modified polyisocyanate as A component.

[0051] The design formula of A component is shown in Table 1A.

[0052] Table 1A

[0053] Raw material composition

[0054] (2) Preparation of component B: According to the design formula ratio, in a four-necked flask, add polyether polyol, flame retardant silicone oil, foaming agent, composite catalyst, flame retardant, C3-C6 trihydric alcohol mixture, pass Stir with a booster electric mixer for 40 minutes at a speed...

Embodiment 2

[0060] The preparation method of this embodiment is the same as that of Example 1. The composition and dosage of each component in this embodiment are: the design formula of component A is shown in Table 2A, and the design formula of component B is shown in Table 2B, wherein the composite catalyst It is a mixture of trimethylhydroxyethylpropylenediamine and butyltin diacetate, the weight percentages are 65% and 35% respectively, and the C3-C6 trihydric alcohol mixture is glycerol, 1,2,6 hexanetriol and triol Mixtures of methylolpropane, 50%, 30% and 20% by weight of glycerol, 1,2,6 hexanetriol and trimethylolpropane, respectively, based on the total weight of the C3-C6 triol mixture , the flame retardant is TCPP; the mass ratio of A component to B component is 1.5:1.

[0061] Table 2A

[0062] Raw material composition

model

% by weight / %

liquid flame retardant

Doher-605

35.43

polyisocyanate

CORONATE HXR-90B

64.57

Total

...

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Abstract

The invention discloses a modified spray-coating flame-retardant type hard foam polyurethane material and a preparation method thereof. The material is prepared from a component A and a component B; the component A is modified polyisocyanate; based on the total weight of the component A, the modified polyisocyanate is prepared from 20 to 60 percent by weight a liquid flame retardant and 40 to 80 percent by weight of polyisocyanate; based on the total weight of the component B, the component B comprises 40 to 70 percent by weight of polyether polyol, 0.5 to 4.5 percent by weight of flame-retardant silicon oil, 10 to 20 percent by weight of a foaming agent, 5 to 10 percent by weight of a composite catalyst, 10 to 25 percent by weight of a flame retardant and 0.8 to 3.5 percent by weight of a mixture of C3-C6 triatomic alcohol. The liquid flame retardant is added into the component A, so the flame retardance of the hard foam polyurethane material is improved.

Description

technical field [0001] The invention relates to the field of material chemistry, more specifically, to a modified spray-coated flame-retardant rigid foam polyurethane material and a preparation method thereof. Background technique [0002] Rigid polyurethane foam (RPUF) is a polymer composite material with superior performance, which has excellent physical and mechanical properties, electrical properties, acoustic properties and chemical corrosion resistance, and has strong bonding properties with various materials, so It is widely used as thermal insulation material for petrochemical pipelines, refrigeration equipment, transportation equipment and buildings. Due to the special structure of RPUF itself, it is extremely flammable, and its oxygen index is 17-19%, and a large amount of smoke and toxic gases (HCN, CO, NOx, etc.) are released during the combustion process, which has great potential harm to people's life and property safety. For this reason, the safety of materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L83/04C08G18/66C08G18/48C08G18/32C08K5/521C08K3/00C08K5/00C08G101/00
CPCC08G18/3206C08G18/48C08G18/6677C08L75/08C08L2201/02C08G2110/0025
Inventor 韩海军段鹏飞李海章刘艳丰邹其泰刘雪峰
Owner TANGSHAN DONGFANG YUHONG WATERPROOF TECH CO LTD
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