Wear-resistant and aging-resistant polyurethane resin and preparation method thereof

Abstract

The invention discloses a wear-resistant and aging-resistant polyurethane resin, wherein the polyurethane resin is prepared from the following raw materials in parts by weight: 10 to 15 parts of polyadipic acid 1,6-hexanediol ester glycol, 12 to 18 parts of polycarbonate diol, 3 to 5 parts of 1,6-hexanediol, 2 to 4 parts of trimethylolpropane, 8 to 10 parts of hexamethylene diisocyanate, 0.35 to 0.55 part of an antioxidant, 0.15 to 0.25 part of an organic bismuth catalyst, 0.5 to 0.8 part of isophorone diamine, 0.15 to 0.25 part of KH-560, and 45 to 75 parts of a solvent. The wear-resistant and aging-resistant polyurethane resin disclosed by the invention has the advantages of good wear resistance, high anti-aging yellowing grade, good anti-aging performance, good hydrolysis resistance andthe like. The wear-resistant and aging-resistant polyurethane resin can be directly coated on a textile fabric or a non-woven fabric to form a film, and the film has the advantages of good wear resistance, high anti-aging yellowing grade, good anti-aging performance, good wear resistance and the like; the textile fabric or non-woven fabric finished product coated with the coating also has good wear resistance, high anti-aging yellowing grade, good anti-aging performance, good hydrolysis resistance and the like.

Description

technical field [0001] The invention relates to the technical field of polyurethane and its production equipment, in particular to a wear-resistant and aging-resistant polyurethane resin and a preparation method thereof. Background technique [0002] The full name of polyurethane is polyurethane, a polymer compound. Polyurethane has two types: polyester type and polyether type. They can be made into polyurethane plastics (mainly foam plastics), polyurethane fibers (called spandex in China ), polyurethane rubber and elastomers. [0003] The main raw materials of polyurethane include diphenylmethane diisocyanate (MDI), toluene diisocyanate (TDI), and polypropylene glycol (PPG), all of which have become international commodities. The production technology and equipment of these raw materials are very complicated. [0004] Polyurethane resin is generally formed by the reaction of polyisocyanate and polyol containing active hydrogen atoms and groups. The reaction between the tw...

AI Technical Summary

Problems solved by technology

But existing nitrogen filling device has the following problems: 1, when using, it is inconvenient to fix it, so that when using, because of shaking, normal use is affected; 2, when using, there is no When the amount of nitrogen in the nitrogen bottle is insufficient, the device needs to be stopped for replacement before it can continue to be used

However, the existing high-viscosity pumps have the following problems: 1. The existing high-viscosity pumps are too complicated to be disassembled as a whole, which is not convenient for transportation and quick maintenance, and reduces the overall use efficiency; 2. The existing high-viscosity pumps High-viscosity pumps have low overall corrosion resistance, wear resistance and high temperature resistance, so they are prone to damage and reduce the overall service life

[0011] 1. The wear resistance of polyurethane resin is poor, and it is easy to scratch after being made into leather; the aging resistance is poor, especially under the condition of ultraviolet light (sunlight), it is easy to produce yellowing and yellowing;

[0012] 2. The production reaction system of polyurethane resin lacks small and medium-sized continuous production equipment, and cannot well combine mixing, feeding, prepolymerization, polymerization, discharging and storage to form a complete continuous polyurethane production equipment;

[0013]3. The above-mentioned defects still exist in the links of mixing, feeding, prepolymerization, polymerization, discharging and storage of polyurethane production equipment, which cannot satisfy the requirements of polyurethane The production requirements cannot guarantee the quality of the produced polyurethane

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