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A polyurethane tire, anti-corrosion technology, applied in the field of polyurethane, can solve the problems affecting product life, etc., achieve the effect of improving high temperature resistance, not easy to hydrolyze, and improving strength
Active Publication Date: 2022-03-25
安徽誉林新材料科技有限公司
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[0003] Conventional polyurethane materials are mostly made of polyester. Although such products have good strength and resilience, they will be hydrolyzed due to the entry of moisture during use due to the ester bond in the product. Affect the life of the product
Method used
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Embodiment 1
[0033] Prepare the chain extender:
[0034] Step S11, at a temperature of 0°C, mix p-nitrophenol, tetrahydrofuran and triethylamine, then add methacryloyl chloride, keep the temperature constant after the addition, and continue stirring for 10 hours. After the reaction, you will get The reaction solution was concentrated under reduced pressure to remove the solvent, then dissolved with chloroform, and then washed with 1% hydrochloric acid solution and 3% sodium hydroxide solution successively, and the solvent was removed after washing to obtain the auxiliary agent; control p-nitrophenol, methyl The dosage ratio of acryloyl chloride, tetrahydrofuran and triethylamine is 0.015mol: 0.015mol: 40mL: 2mL;
[0035] Step S12, under the condition of nitrogen protection, mix the additive and hydroquinone, add chloroplatinic acid, then slowly add 1,3,5,7-tetramethylcyclotetrasiloxane dropwise, and raise the temperature to 65°C, After the addition, keep the temperature constant, stir for...
Embodiment 2
[0038] Preparation of anti-hydrolysis agent:
[0039] At a temperature of 180°C and nitrogen protection, add isocyanate-propyltriethoxysilane to 3-methyl-1-phenyl-2-cyclobutene-1-oxide, and stir for 4 hours to obtain Anti-hydrolysis agent. The amount of 3-methyl-1-phenyl-2-cyclobutene-1-oxide added is 0.75% of the mass of isocyanate propyltriethoxysilane.
Embodiment 3
[0041] Preparation of polyester polyol:
[0042] Mix dibasic acid and polyol with a mass ratio of 10:7, add tetraisopropyl titanate, heat to 233°C under nitrogen protection, and react until the acid value drops below 1mgKOH / g, and the hydroxyl value The reaction is stopped below 114mgKOH / g to obtain polyester polyol, wherein the dibasic acid is sebacic acid, and the polyol is a mixture of new diol and trimethylolpropane at a mass ratio of 10-50:0.5.
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Abstract
The invention relates to a high-wear-resistant corrosion-resistant floor scrubber polyurethane tire, and belongs to the technical field of polyurethane, and the polyurethane tire is prepared by the following steps: 1, mixing polyester polyol, a chain extender and isocyanate, stirring for reaction, then adding hydroxyl-terminated liquid rubber and a catalyst, and stirring to obtain a component A; 2, polycarbonate diol, polytetrahydrofuran glycol and p-phenylene diisocyanate are mixed and heated for a reaction, an oligomer is obtained, then isophorone diisocyanate, an antioxidant, an ultraviolet light absorber and an anti-hydrolysis agent are sequentially added, stirring is conducted, and a component B is obtained; and 3, mixing the component A and the component B, pouring the mixture into a tire mold, and curing to obtain the high-wear-resistance corrosion-resistant scrubber polyurethane tire. And the added chain extender and hydrolysis-resistant agent improve the strength of the material and resist hydrolysis, and have a good promotion effect on prolonging the service life of the high-wear-resistance corrosion-resistant floor scrubber polyurethane tire.
Description
technical field [0001] The invention belongs to the technical field of polyurethane, and in particular relates to a high wear-resistant and anti-corrosion polyurethane tire for floor washing machines. Background technique [0002] Polyurethane is a polymer synthetic material with properties between rubber and plastic. It is characterized by a wide range of hardness adjustment. It has both the elasticity of rubber and the hardness of plastic. Polyurethane elastomers have good mechanical properties and wear resistance. and rebound performance. However, in addition to having good wear resistance and rebound effects, polyurethane also requires products to have excellent low temperature resistance and super hydrolysis resistance. [0003] Conventional polyurethane materials are mostly made of polyester. Although such products have good strength and resilience, they will be hydrolyzed due to the entry of moisture during use due to the ester bond in the product. affect the life o...
Claims
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