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Polyether composition, rigid polyurethane foam taking polyether composition as raw material and preparation method of rigid polyurethane foam

A technology of polyurethane rigid foam and composition, which is applied in the field of polyurethane composite materials, can solve problems such as complex processes, and achieve the effect of smooth and plump appearance, high functionality, and good toughness

Active Publication Date: 2021-12-10
JIAHUA CHEM TECH DEV SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is the defect of complex technology in the existing composite material preparation technology, and then provides a kind of polyether composition and its Polyurethane rigid foam as raw material and preparation method thereof

Method used

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  • Polyether composition, rigid polyurethane foam taking polyether composition as raw material and preparation method of rigid polyurethane foam
  • Polyether composition, rigid polyurethane foam taking polyether composition as raw material and preparation method of rigid polyurethane foam
  • Polyether composition, rigid polyurethane foam taking polyether composition as raw material and preparation method of rigid polyurethane foam

Examples

Experimental program
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Effect test

Embodiment 1

[0062] This embodiment provides a polyether composition, raw materials are 30kg polyether polyol PN560, 55kg polyether polyol 8360, 15kg polyester polyol KH8262, 0.05kg water, 2kg foam stabilizer, 0.8kg Polycat 8, 0.4 kg of 33LV, 15kg flame retardant, 30kg blowing agent and 3kg expanded microspheres, its specific preparation method is as follows:

[0063] (1) Weigh each raw material, put other raw materials except expanded microspheres and foaming agent into the mixing tank, stir with 2000r / min for 30min, measure the moisture content to make it qualified, and obtain the mixture;

[0064] (2) Turn on the cooling water in the mixing tank, cool the mixture to below 15°C, add the expanded microspheres and foaming agent, stir at 1500r / min for 30min, and then pack the mixture to obtain a polyether composition.

[0065] This embodiment also provides a rigid polyurethane foam, the raw materials of which include 151.25 kg of the above-mentioned polyether composition and 90 kg of isoc...

Embodiment 2

[0068] This embodiment provides a polyether composition, raw materials are 45kg polyether polyol PN560, 45kg polyether polyol 8360, 10kg polyester polyol KH8262, 0.1kg water, 1.5kg foam stabilizer, 0.4kg Polycat 8, 0.3kg of A-300, 20kg flame retardant, 25kg blowing agent and 5kg expanded microspheres, the specific preparation method is as follows:

[0069] (1) Weigh each raw material, put other raw materials except expanded microspheres and foaming agent into the mixing tank, stir with 2000r / min for 30min, measure the moisture content to make it qualified, and obtain the mixture;

[0070] (2) Turn on the cooling water in the mixing tank, cool the mixture to below 15°C, add the expanded microspheres and foaming agent, stir at 1500r / min for 30min, and then pack the mixture to obtain a polyether composition.

[0071] This embodiment also provides a rigid polyurethane foam, the raw materials of which include 152.3kg of the above-mentioned polyether composition and 98kg of isocyana...

Embodiment 3

[0074] This embodiment provides a polyether composition, the raw materials are 50kg polyether polyol PN400, 40kg polyether polyol 8238A, 10kg polyester polyol KH8262, 0.15kg water, 2kg foam stabilizer, 0.3kg Polycat 8, 0.3 The A-300 of kg, 20kg flame retardant, 25kg blowing agent and 8kg expanded microspheres, its specific preparation method is as follows:

[0075] (1) Weigh each raw material, put other raw materials except expanded microspheres and foaming agent into the mixing tank, stir with 2000r / min for 30min, measure the moisture content to make it qualified, and obtain the mixture;

[0076] (2) Turn on the cooling water in the mixing tank, cool the mixture to below 15°C, add the expanded microspheres and foaming agent, stir at 1500r / min for 30min, and then pack the mixture to obtain a polyether composition.

[0077] This embodiment also provides a rigid polyurethane foam. The raw materials include 155.75 kg of the above-mentioned polyether composition and 85 kg of isocy...

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Abstract

The invention discloses a polyether composition. The polyether composition is prepared from the following raw materials: expanded microspheres, polyester polyol and polyether polyol of a specific initiator. The invention also discloses rigid polyurethane foam taking the polyether composition as a raw material, a preparation method of the rigid polyurethane foam and a composite material prepared from the rigid polyurethane foam. The polyether composition provided by the invention is mixed with other raw materials to prepare rigid polyurethane foam, so that the whole rigid polyurethane foam has relatively good toughness and good high-temperature expansibility; and when coated fiber prepreg resin is subjected to high-temperature mold pressing curing, proper expansibility is generated, so that the composite material can be tightly attached to a forming mold and has a smooth and full appearance, and the outer-layer composite material and a core material can be tightly combined, so that the composite material has excellent strength. Compared with other traditional processes, the method is simple in process, low in investment, low in cost, high in efficiency and beneficial to reduction of production cost and improvement of production efficiency, and has very high economic value.

Description

technical field [0001] The invention relates to the technical field of polyurethane composite materials, in particular to a polyether composition, a polyurethane hard foam using the polyether composition as a raw material and a preparation method thereof. Background technique [0002] Carbon fiber and glass fiber composite materials refer to products obtained by combining fiber prepreg resin or other methods with resin and then cured at high temperature. It has the characteristics of high temperature resistance, friction resistance, electrical conductivity, heat conduction and corrosion resistance, and is mainly used in sports Equipment, aerospace and medical equipment and other fields. [0003] Traditional composite material molding processes include air-inflated compression molding in air ducts, hand lay-up, resin transfer molding, thermal self-expanding molding, etc., but each has its own problems. Among them, the thermal self-expansion molding process is to wrap the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/42C08L75/04C08J9/14C08J9/32C08G101/00
CPCC08G18/4018C08G18/4816C08G18/4829C08G18/4883C08G18/425C08J9/144C08J9/32C08J2203/142C08J2203/22C08J2205/10C08J2375/04C08G2110/0025
Inventor 夏伟如李玉博
Owner JIAHUA CHEM TECH DEV SHANGHAI CO LTD
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