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A polyurethane sealant, environmentally friendly technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of long-term heat resistance, environmental pollution, insufficient elasticity, etc., to save wood, save The effect of natural resources
Active Publication Date: 2012-06-20
WOLAN TECH
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[0004] However, general polyurethane sealants still have the following defects when used for wooden floor coverings, such as insufficient elasticity, long-term heat resistance, poor water resistance when no primer is used, poor thermal conductivity for floor coverings, and the glue generally contains toluene, Toxic solvents such as xylene have certain pollution to the environment and certain harm to the human body
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[0084] The prepared prepolymer has an isocyanate content of 2.3%
[0085] Preparation of sealant:
[0086]
[0087]
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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Abstract
The invention provides high-elasticity heat-conducting environment-friendly polyurethanesealant, belongs to the technical field of one-component moisture-curing polyurethanesealant, and aims to provide a high-elasticity heat-resisting waterproof heat-conducting adhesive one-component polyurethanesealant capable of excellently adhering various substrates such as various types of wood, concrete and the like, and a preparation method of the sealant. The invention is characterized in that the sealant is prepared in such a way that 25 to 60 percent of prepolymer prepared with high-activity high-molecular-weight polyether polyol and isocyanate is mixed with 15 to 30 percent of plasticizing agent, 15 to 35 percent of heat-conducting filling material, 2 to 10 percent of thixotropic agent and 0.01 to 1 percent of amine / tin compound. The sealant provided by the invention is used for paving and adhering all sorts of wood floor, particularly for paving emerging wood floor of a ground heating mechanism, so as to replace the traditional wood joist paving way.
Description
technical field [0001] The invention belongs to the technical field of polyurethane sealant, and relates to an emerging one-component polyurethane sealant for wooden floor paving, which has high elasticity, heat resistance, water resistance, thermal conductivity, adhesiveness and does not contain formaldehyde and solvents, and can Bonds well to a wide variety of substrates including various woods and concrete. Background technique [0002] "Three-point floor and seven-point installation" is a common saying in the flooring industry. In fact, that is to say, a good floor needs a good installation. The traditional wood floor paving method adopts the wooden keel method. The emerging adhesive paving method is mainly from the perspective of energy saving and saving natural resources. This is also a comparison between the pasting system and the traditional one. Why does it occupy a place in the European and American markets? main reason. In the European floor paving market, almo...
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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Application Information
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