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Wet-type high cracking resistance, high wear resistance and high peel strength polyurethane resin and preparation thereof

A technology of polyurethane resin and high wear resistance, which is applied in the field of its preparation, can solve the problems of not being able to achieve high bending resistance, high wear resistance and high peeling at the same time, and achieve improved wear resistance, improved durability, good flexibility and heat resistance The effect of stability

Active Publication Date: 2011-02-09
HEFEI ANLI POLYURETHANE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, polyurethane resins with high physical properties on the market, such as high-stripping polyurethane resins and cold-resistant polyurethane resins, cannot simultaneously achieve the three performance indicators of high bending resistance, high wear resistance, and high peeling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0026] Raw material name Weight (unit: Kg)

[0027] PET-A 300

[0028] PET-B 600

[0029] Ethylene glycol 126

[0030] 4,4-Diphenylmethane diisocyanate 592

[0031] Antioxidant I-1010 2.0

[0032] Catalyst (phosphoric acid or organic bismuth catalyst MB20) 0.2

[0033] Accelerator 60

[0034] Retarder 40

[0035] Leveling agent 10

[0036] N,N-Dimethylformamide 3680

[0037] PET-A is a polyester polyol with a molecular weight of 4000. The raw materials and formula used are 4000Kg of adipic acid, 1300Kg of ethylene glycol, 900Kg of 1,4-butanediol, and 0.5Kg of catalyst TPT. (The catalyst TPT here is used for the synthesis of polyester polyol PET, while the previous organic bismuth catalyst MB20 is used for the synthesis of polyurethane resin.)

[0038] PET-B is a polyester polyol with a molecular weight of 2300. The raw materials and formula used are 3000Kg adipic acid, 190Kg ethylene glycol, 1860Kg 1,4-butanediol, and 0.4Kg catalyst TPT.

[0039] The wet type high to...

Embodiment approach 2

[0046] Raw material name Weight (unit: Kg)

[0047] PET-A 350

[0048] PET-B 550

[0049] Ethylene glycol 110

[0050] 1,4-butanediol 25

[0051] 4,4-Diphenylmethane diisocyanate 595

[0052] Antioxidant I-1010 2.0

[0053]Catalyst 0.2

[0054] Accelerator 70

[0055] Retarder 30

[0056] Leveling agent 10

[0057] N,N-Dimethylformamide 3700

[0058] PET-A is a polyester polyol with a molecular weight of 4000. The raw materials and formula used are 4000Kg of adipic acid, 1300Kg of ethylene glycol, 900Kg of 1,4-butanediol, and 0.5Kg of catalyst TPT.

[0059] PET-B is a polyester polyol with a molecular weight of 2300. The raw materials and formula used are 3000Kg adipic acid, 190Kg ethylene glycol, 1860Kg 1,4-butanediol, and 0.4Kg catalyst TPT.

[0060] The wet type high tortuous resistance, high wear resistance and high peeling polyurethane resin of the present invention is specifically prepared according to the following steps:

[0061] 1. Put polyester polyol comp...

effect approach 3

[0067] In order to verify that the wet high tortuosity, high wear resistance, and high peeling polyurethane resin described in the present invention can simultaneously achieve three performance indicators such as high tortuosity, high wear resistance, and high peeling, the resin prepared by the above embodiment is The following formula is used to make synthetic leather, and the specific leather-making formula is as follows:

[0068] Resin 100

[0069] DMF 55

[0070] B-90 1.0

[0071] S-91 2.5

[0072] Lignin 4.0

[0073] CaCO3 2.0

[0074] Appropriate amount of color paste

[0075] After testing, the wet-type polyurethane synthetic leather made with the above-mentioned formula can simultaneously have high peel strength and good bending resistance, and has high abrasion resistance.

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Abstract

The invention discloses a wet polyurethane resin with high flexing resistance, high wear resistance and high peeling strength, and a preparation method thereof. During a synthetic process of the polyurethane (PU) resin, proper soft polyurethane segment and hard polyurethane segment materials and a brand-new synthesis process route by quasi prepolymerization are selected to prepare the wet polyurethane resin based on fully considering effect of separate soft and hard segment structure, crystallinity and intermolecular cohesive energy density distribution of the PU resin on aggregation structure relationship formed by coagulation of PU resin solution in dimethylformamide (DMF) aqueous solution. The wet PU resin with high flexing resistance, high wear resistance and high peeling strength fully solves the defect that the existing common PU resin can not reach three performance indexes which are high flexing, high wear resistance, high peeling strength at the same time. Synthetic leather made from the wet PU resin with high flexing resistance, high wear resistance and high peeling strength can meet three performance indexes of high flexing resistance, high wear resistance, high peelingstrength at the same time, and can greatly improve durability of shoes products.

Description

technical field [0001] The invention relates to a wet-type polyurethane resin with high bending resistance, high wear resistance and high peeling off, which is a wet-type polyurethane resin for luggage leather, ball leather and sports and leisure shoe leather, and also relates to a preparation method thereof. Background technique [0002] Due to the limited natural resources and high prices of leather products, it cannot meet the growing market demand. Polyurethane synthetic leather products have a wide range of raw materials, cheap prices, good processing performance, and fully meet people's life pursuits. In particular, polyurethane synthetic leather products with high physical properties have been widely used in sports and leisure shoes, ball games, massage chairs, sofas, etc. The polyurethane synthetic leather products with high physical properties are mainly reflected by the polyurethane resin used. At present, polyurethane resins with high physical properties on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/10C08G18/42C08G18/76
Inventor 吴兴保惠坚强姚和平
Owner HEFEI ANLI POLYURETHANE NEW MATERIAL
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