Preparation method of unsaturated polyester resin for wood modification

A polyester resin and wood modification technology, which is applied in the field of preparation of unsaturated polyester resin, can solve the problems of impregnation of wood, no technical content of unsaturated polyester resin, and large space scale, so as to avoid the moisture content of wood The effect of increasing, expanding channels and scope, and improving utilization
CN104693369AInactive Publication Date: 2015-06-10BEIJING FORESTRY UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING FORESTRY UNIVERSITY
Publication Date
2015-06-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of an unsaturated polyester resin for wood modification. The method comprises the following steps: A, sequentially adding maleic anhydride, phthalic anhydride and 1,2-propylene glycol into a three-mouth flask; B, stirring and rising temperature, rising the temperature of a reaction system to be about 150+ / -5 DEG C, and keeping the reaction temperature for about 6 hours; C, reducing the temperature of the reaction system to be 110-120 DEG C, adding styrene, keeping the temperature to be 90+ / -5 DEG C, continuously stirring for 0.5-1 hour and fully mixing; D, cooling to reach the room temperature and discharging to complete the preparation of the unsaturated polyester resin. The preparation method has the advantages of simpleness, high operability, security, reliability and the like; after the wood is subjected to dipping modification, a new way and a new range of the wood are widened.
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Description

technical field

[0001] The invention relates to a preparation method of unsaturated polyester resin, in particular to a preparation method of unsaturated polyester resin for wood modification. Background technique

[0002] With the depletion of natural forest resources worldwide and the implementation of my country's natural forest protection project, fast-growing and high-yield forest timber in plantation forests has become the main species to alleviate or solve the contradiction between supply and demand of timber in my country. It has the characteristics of fast growth, high yield, and short harvesting cycle, resulting in a high proportion of juvenile wood in the wood, resulting in poor material, low density and surface hardness, which limits its application range. The wood modification method is an effective way to improve the physical and chemical properties of artificial fast-growing and high-yield forest wood. After treatment, the wood density, surface hardness, wear ...

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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