Fire-resistant hard foamed polyurethane composite board and fire protection strip preparation method
A technology of rigid polyurethane foam and fireproof isolation belt, which is applied in the direction of polyurea/polyurethane adhesive, fire prevention, chemical instruments and methods, etc., can solve the problems that the thermal insulation wall does not have fire resistance ability, troublesome construction, etc. Excellent stability, easy construction and simple manufacturing process
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples of specific implementation.
[0020] 1. The production method of the fire-resistant rigid polyurethane foam composite board is as follows: first, the fire-resistant polymer sheet is prepared in advance, and the fire-resistant polymer sheet can be obtained by any of the following methods:
[0021] a. After mixing the inorganic powder and the flame-retardant adhesive 3:1 evenly, press the mixture with the flame-retardant non-woven fabric with a professional production line to make a flame-retardant polymer sheet.
[0022] b. Immerse the non-woven fabric in the flame-retardant adhesive, take out the non-woven fabric, scrape off the excess flame-retardant adhesive, flatten it, and dry it to form a flame-retardant polymer sheet.
[0023] c. Buy flame-retardant non-woven fabrics sold in the market
[0024] The flame retardant adhesive is prepared accordi...
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