Polyurethane plastic runway material and preparation method thereof
A technology of plastic track and polyurethane, applied in the field of polyurethane plastic track materials, can solve problems such as low cost, achieve the effects of low cost, good elongation and strength, and solve processing problems
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Embodiment 1
[0026] 1. Degradation of waste polyurethane fiber:
[0027] a, install the reaction device: take the four-necked flask as the reaction vessel, and three of them are respectively equipped with a thermometer,
[0028] Reflux condensing device and nitrogen ventilation device;
[0029] b. Degradation reaction: Take 200 parts of polyurethane fiber waste and 400 parts of ethylene glycol and add them to a four-neck flask for mixing, put the four-necked flask into an oil bath, and heat the reaction mixture to 200°C under the protection of nitrogen. And keep at this temperature for 1h. Then, after cooling to room temperature, the degradation product separated into two layers. The upper product was separated, washed with water and purified with benzene to obtain a refined polyol whose hydroxyl value was measured to be 92.5.
[0030] 2. Polyurethane plastic runway material is composed and prepared of A component and B component:
[0031] Component A is composed of the following raw m...
Embodiment 2
[0037] 1. Degradation of waste polyurethane fiber:
[0038] a, install the reaction device: take the four-necked flask as the reaction vessel, and three of them are respectively equipped with a thermometer,
[0039] Reflux condensing device and nitrogen ventilation device;
[0040] b. Degradation reaction: Take 200 parts of polyurethane fiber waste, 400 parts of ethylene glycol, and 4 parts of catalyst potassium acetate and mix them in a four-necked flask, put the four-necked flask into an oil bath, and react under nitrogen protection. The mixture was heated to 200 °C and kept at this temperature for 1 h. Then, after cooling to room temperature, the degradation product separated into two layers. The upper product is separated, washed with water and purified with benzene to obtain refined polyols. Its hydroxyl value was measured to be 106.
[0041] 2. Polyurethane plastic runway material is composed and prepared of A component and B component:
[0042] Component A is compo...
Embodiment 3
[0048] 1. Degradation of waste polyurethane fiber:
[0049] a, install the reaction device: take the four-necked flask as the reaction vessel, and three of them are respectively equipped with a thermometer,
[0050] Reflux condensing device and nitrogen ventilation device;
[0051] b. Degradation reaction: Take 200 parts of polyurethane fiber waste, 400 parts of 1,4-butanediol, and 4 parts of catalyst potassium acetate and mix them in a four-necked flask, put the four-necked flask into an oil bath, and under nitrogen protection, The reaction mixture was heated to 190 °C and maintained at this temperature for 1 h. Then, after cooling to room temperature, the degradation product separated into two layers. The upper product is separated, washed with water and purified with benzene to obtain refined polyols. Measure its hydroxyl value to be 100.
[0052] 2. Polyurethane plastic runway material is composed and prepared of A component and B component:
[0053] Component A is co...
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Abstract
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