A curing room for polyurethane mixture mixing building and polyurethane pre-curing method
A curing chamber, polyurethane technology, applied in chemical instruments and methods, mixers, mixers with rotary stirring devices, etc., can solve the problems of mixture segregation, reduced peeling resistance, road performance degradation, etc., and achieves good results. Effect
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Embodiment 1
[0034] This embodiment provides a polyurethane mixture mixing building with a curing room, the schematic diagram of which is as follows figure 1 As shown, it includes isocyanate injection pipe 1, polyol / water spray pipe 2, hygrometer 3, temperature control device 4, polyurethane output pipe 5, agitator 6, upper liquid layer viscosity test chamber 7, middle liquid layer viscosity test chamber 8 And the viscosity test chamber 9 of the lower liquid layer, wherein the isocyanate injection pipe 1 is arranged on one side of the top wall of the curing chamber and extends vertically upward; the polyol / water spray pipe 2 is arranged in the middle of the top wall of the curing chamber and has a plurality of nozzles; The hygrometer 3 is arranged outside the pipe wall of the polyol / water spray pipe 2; the temperature control device 4 is arranged on the upper part of the side wall of the curing chamber; the polyurethane output pipe 5 is arranged on one side of the bottom wall of the curing ...
Embodiment 2
[0038] This embodiment provides a kind of polyurethane mixture mixing building, its structural schematic diagram is as follows image 3 Shown, comprise polyurethane cement spraying pipe 14, polyurethane mixture mixing tank 15, curing chamber 16, isocyanate storage tank 17, isocyanate weighing hopper 18, polyol / water weighing hopper 19 and polyol / water storage tank 20, wherein The input end of the isocyanate weighing hopper 18 is connected with the output end of the isocyanate storage tank 17, the output end of the isocyanate weighing hopper 18 is connected with the isocyanate injection pipe of the curing chamber 16, and the input end of the polyol / water weighing hopper 19 is connected with the polyol / water storage tank. The output end of the tank 20 is connected, the output end of the polyol / water weighing hopper 19 is connected with the polyol / water spray pipe of the curing chamber 16, the polyurethane cement spray pipe 14 is connected with the polyurethane output pipe of the ...
Embodiment 3
[0040] This embodiment utilizes the mixing plant provided in Example 2 to provide a method for preparing a polyurethane mixture, wherein the polyurethane is a two-component polyurethane, specifically comprising the following steps:
[0041] Step 1: Control the humidity in the curing room through the hygrometer and the temperature control device to keep the humidity at 30%; use the temperature control device to keep the temperature in the curing room at 30°C;
[0042] Step 2: Transport the isocyanate from the isocyanate storage tank to the isocyanate weighing hopper, and weigh m in the isocyanate weighing hopper 1 kg isocyanate, and injected into the curing chamber through the isocyanate injection pipe;
[0043] Step 3: Transport the polyol from the polyol storage tank to the polyol weighing hopper, and weigh m in the polyol weighing hopper 2 kg polyol, and spray polyol to the isocyanate in the curing chamber through the polyol spray pipe, m 2 :m 1 =1.25:1;
[0044] Step 4:...
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Abstract
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