Synthesis control method and system of organic silicon modified polyurethane
A control method, polyurethane technology, applied in control/regulation systems, temperature control, non-electric variable control, etc., can solve the problems of thermal stability, surface performance aging resistance and pollution resistance, and avoid human resources. and waste of resources, avoid reaction failure, and improve the effect of product quality
Inactive Publication Date: 2022-03-01
GUANGDONG IND TECHN COLLEGE
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[0002] Polyurethane (PU) is a high-performance polymer material with excellent properties such as high strength and elasticity, good hardness and wear resistance, and good processing performance. It is widely used in home appliances, construction, textiles, daily necessities, transportation, national defense, etc. There are applications in all fields, but polyurethane has the disadvantages of poor thermal stability, surface properties, aging resistance and pollution resistance
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[0063] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0064] It should also be understood that the following examples are only used to further illustrate the present invention, and should not be construed as limiting the protection scope of the present invention. Some non-essential improvements and adjustments made by those skilled in the art according to the above contents of the present invention all belong to the present invention scope of protection. The specific process parameters and the like in the following example are only an example within the appropriate range, that is, those skilled in the art can make a selection within the appropriate range through the description ...
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The invention discloses a synthetic control method of organic silicon modified polyurethane, which comprises the following steps: adding synthetic raw materials into a reaction kettle, heating, starting a stirring motor to stir the synthetic raw materials, carrying out prepolymerization reaction to obtain a prepolymer product, carrying out prepolymerization reaction to obtain a prepolymer product, and adding the prepolymer product into the reaction kettle to obtain the organic silicon modified polyurethane. Adding of a chain extender is controlled according to the current of the stirring motor and the temperature of the synthetic raw materials in the reaction kettle, a prepolymer product is subjected to a chain extension reaction to obtain a polyurethane product, and the polyurethane product is subjected to quaternization to obtain the organic silicon modified polyurethane emulsion. The temperature and the viscosity of reactants are monitored in real time, the reaction rate of the chain extension reaction is controlled by adding the solvent acetone and controlling the adding rate and the stirring rate of the reactants, reaction failure is avoided, and the product quality is improved. According to the product synthesis control method, waste of human resources and resources can be avoided, efficiency is improved, and the product achieves good balance of tensile strength, elongation at break, hydrophobic performance and low-temperature resistance.
Description
technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing polyurethane, and in particular to a synthesis control method for organosilicon-modified polyurethane. Background technique [0002] Polyurethane (PU) is a high-performance polymer material with excellent properties such as high strength and elasticity, good hardness and wear resistance, and good processing performance. It is widely used in home appliances, construction, textiles, daily necessities, transportation, national defense, etc. There are applications in all fields, but polyurethane has the disadvantages of poor thermal stability, surface properties, aging resistance and pollution resistance. [0003] Silicone has good hydrophobicity, low surface energy, flexibility, UV resistance, gas permeability and biocompatibility. Therefore, the industry utilizes the crosslinking properties of organosiloxane groups and functional groups containing ...
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IPC IPC(8): C08G18/12C08G18/34C08G18/48C08G18/61C08G18/66C08G18/32G05D23/20
CPCC08G18/12C08G18/48C08G18/61C08G18/6692C08G18/348G05D23/20C08G18/3206
Inventor 朱永闯陈杰生黄金辉
Owner GUANGDONG IND TECHN COLLEGE