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Premixed polyether, raw material composition, polyurethane foam, and preparation method and application thereof

A raw material composition and a technology of combining polyether, which is applied in the field of polyurethane, can solve the problems of poor safety of composite lifebuoys, low closed cell rate of polyurethane foam, and poor foam strength, and achieve excellent dimensional stability, low water absorption, and impact resistance. strong effect

Active Publication Date: 2015-04-29
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to overcome the defects of poor safety of existing polyurethane polyethylene composite lifebuoy, low closed cell rate of polyurethane foam, high water absorption rate and poor foam strength, and to provide a combined polyether, raw material Composition, polyurethane foam and its preparation method and use

Method used

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  • Premixed polyether, raw material composition, polyurethane foam, and preparation method and application thereof
  • Premixed polyether, raw material composition, polyurethane foam, and preparation method and application thereof
  • Premixed polyether, raw material composition, polyurethane foam, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The raw material formula of combined polyether is shown in the following table:

[0050]

[0051]

[0052] Pour the raw materials mentioned in the above table into the container according to the proportion, and use an electric mixer to mix them evenly to make component A; then pour component A and isocyanate PM200 into the container according to the weight ratio of 1:1, and then use an electric mixer to Stir with the agitator for 8 seconds (the speed is 2500r / min), pour the evenly mixed liquid into the prepared polyethylene shell, and when the raw material grows to the injection port, seal the injection port, and keep it at a constant temperature of 35°C The polyurethane-polyethylene composite lifebuoy of the present invention can be obtained by aging for 2 hours under conditions.

Embodiment 2

[0054] The raw material formula of combined polyether is shown in the following table:

[0055] Polyether polyol SA460

[0056] Pour the raw materials mentioned in the above table into the container according to the specified ratio, and mix them evenly with an electric mixer to make component A; then pour component A and isocyanate PM200 into the container according to the weight ratio of 1:1, and then use Stir with an electric stirrer for 8 seconds (rotation speed is 3000r / min), pour the evenly mixed liquid into the prepared polyethylene casing, and when the raw material grows to the injection port, seal the injection port, at a constant temperature of 30 After curing for 2 hours under the condition of ℃, the polyurethane polyethylene composite lifebuoy of the present invention can be obtained.

Embodiment 3

[0058] The raw material formula of combined polyether is shown in the following table:

[0059] Polyether polyol SA460

[0060] Pour the raw materials mentioned in the above table into the container according to the specified ratio, and mix them evenly with an electric mixer to make component A; then pour component A and isocyanate PM200 into the container according to the weight ratio of 1:1, and then use Stir with an electric stirrer for 8 seconds (rotating speed is 3500r / min), pour the evenly mixed liquid into the prepared polyethylene casing, and when the raw material grows to the injection port, seal the injection port, and put it at a constant temperature of 30 After curing for 2 hours under the condition of ℃, the polyurethane polyethylene composite lifebuoy of the present invention can be obtained.

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Abstract

The invention discloses premixed polyether, a raw material composition, polyurethane foam, and a preparation method and application thereof. The premixed polyether comprises the following ingredients in parts by weight: 30-50 parts of polyether polyol A, 40-60 parts of polyether polyol B, 5-15 parts of polyester polyol C, 2.0-2.5 parts of a surfactant, 0.1-0.3 part of a catalyst A, 0.6-1.5 parts of a catalyst B, 0.3-0.6 part of a catalyst C, 18-22 parts of a foaming agent and 1.5-2.2 parts of water, wherein the polyether polyol A is polyether polyol which is prepared by adopting sorbitol as an initiator for polymerizing with oxyalkylene; the polyether polyol B is polyether polyol NJ6209 and / or polyether polyol SA380; the polyester polyol C is benzoic anhydride polyester polyol. The polyurethane foam prepared by adopting the premixed polyether is high in percentage of close area and low in water absorption, and the entire polyurethane foam has relatively high physical strength.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a combined polyether, a raw material composition, and a polyurethane foam prepared from the raw material composition, as well as its preparation method and application. Background technique [0002] The life buoy is a main type of life-saving equipment, and it is usually used as an essential product for safety protection in water disaster relief and related production and operation processes. It has the functions of easy to use, life-saving and self-rescue. With the development of the economy, the rise of new industries, and the strengthening of the government's requirements for safe production and operation, the scope of lifebuoy application equipment has expanded widely, involving all water activities such as ship shipping, fishery fishing and breeding, water tourism and leisure, and flood fighting and disaster relief. Once a falling into the water accident occurs, people's hope of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/16C08G18/18C08G18/20C08J9/14B63C9/135C08G101/00
CPCB63C9/135C08G18/1808C08G18/1816C08G18/2036C08G18/4018C08G18/42C08G18/4804C08G18/4883C08G2101/00C08J9/08C08J9/144C08J2203/02C08J2203/142C08J2203/184C08J2205/052C08J2375/08
Inventor 董建国于楠李心强许景龙
Owner SHANGHAI DONGDA POLYURETHANE
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