A kind of synthetic method of polyether for low modulus sealant

A synthesis method and sealant technology, applied in the directions of polyether adhesives, adhesives, adhesive types, etc., can solve the problems of reducing the elastic modulus and modifying the high modulus of the sealant, so as to reduce the elastic modulus and improve the quality of the sealant. Tensile properties, the effect of increasing tensile elasticity
CN110922579BActive Publication Date: 2021-12-03ZHEJIANG HUANGMA TECH +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG HUANGMA TECH
Publication Date
2021-12-03

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Abstract

The invention discloses a method for synthesizing polyether for low modulus sealants, and belongs to the technical field of organic compound synthesis. The synthesis method of the present invention mainly uses the mixture of unit alcohol polyoxypropylene ether and polyol polyoxypropylene ether as an initiator, uses propylene oxide as a chain extender, and adds a metal complex catalyst for reaction, and the reaction is completed to obtain the Polyether for low modulus sealants. The polyether prepared by the invention can well enhance the rigidity of the sealant and reduce the modulus of elasticity, which overcomes the problem of high modulus of the existing polyether silane modified sealant, and has a simple synthesis process and easy production control , short production cycle and low energy consumption.
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Description

technical field

[0001] The invention relates to the technical field of organic compound synthesis, in particular to a method for synthesizing polyether for low modulus sealants. Background technique

[0002] With the country's increasing emphasis on energy conservation and environmental protection, prefabricated buildings have the advantages of short construction period, low energy consumption, less pollution, and construction safety, making them gradually become one of the main directions of future architectural development. Specifically, compared with traditional concrete buildings, prefabricated buildings can reduce the amount of on-site waste by about 80%, reduce material consumption by nearly 60%, reduce construction personnel by about 90%, and shorten the construction period by about 70%. In the assembly process of prefabricated buildings, there are a large number of joints that need to be waterproofed and sealed, especially the joints of the exterior wall. The sealant...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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