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Breathable and moisture-permeable polyurethane resin for labor protection gloves and preparation method of breathable and moisture-permeable polyurethane resin

A polyurethane resin and labor protection glove technology, applied in the field of polyurethane resin, can solve the problems of sweat not being discharged in time, hand injury, poor air permeability and moisture permeability, etc., and achieve the effect of excellent moisture permeability and excellent mechanical properties

Inactive Publication Date: 2021-12-21
华大化学(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a polyurethane resin for breathable and moisture-permeable labor protection gloves and its preparation method, which has the advantages of good wearing comfort and solves the relatively poor air permeability and moisture permeability of knitted gloves. And during use, the sweat on the hands cannot be discharged in time, and wearing it for a long time will cause damage to the hands

Method used

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  • Breathable and moisture-permeable polyurethane resin for labor protection gloves and preparation method of breathable and moisture-permeable polyurethane resin
  • Breathable and moisture-permeable polyurethane resin for labor protection gloves and preparation method of breathable and moisture-permeable polyurethane resin
  • Breathable and moisture-permeable polyurethane resin for labor protection gloves and preparation method of breathable and moisture-permeable polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]

[0033] Put AA-EG-DEG with a number average molecular weight of 2000G / MOL, PEG-2000, antioxidants, phosphoric acid and an appropriate amount of DMF into a three-necked flask, stir evenly with a mechanical stirrer at high speed, raise the temperature to 50°C, and then add MDI to control the reaction The temperature is 70-75℃ for prepolymerization for 1 hour; after the prepolymerization is completed, add MDI to increase viscosity, and when the viscosity reaches 40-80Pa.s / 70℃, add part of DMF and EG; after fully stirring, add the remaining MDI, and control the temperature at React at 70-80°C to increase the viscosity, and depending on the reaction speed, add CATA (catalyst) as appropriate, add MDI moderately during the thickening process and gradually add DMF to dilute the viscosity until the viscosity reaches 300-350Pas / 25°C, add end capping DMF and methanol are used for capping, and then malic acid and additives are put in. After being completely stirred evenly, it is...

Embodiment 2

[0035]

[0036]

[0037]Put AA-BG with a number average molecular weight of 2000G / MOL, PEG-2000, antioxidants, phosphoric acid and an appropriate amount of DMF into a three-necked flask, stir evenly with a mechanical stirrer at high speed, raise the temperature to 50°C, then add MDI, and control the reaction temperature to Pre-polymerize at 70-75°C for 1 hour; add MDI to increase viscosity after pre-polymerization, and add part of DMF and EG when the viscosity reaches 40-80Pa.s / 70°C; add the remaining MDI after fully stirring, and control the temperature at 70- React at 80°C to increase the viscosity, and depending on the reaction speed, add CATA (catalyst) as appropriate, add MDI moderately during the thickening process and gradually add DMF to dilute the viscosity until the viscosity reaches 300-350Pas / 25°C, add end-capped DMF and Carry out capping with methanol, then put in malic acid and additives, after being completely stirred evenly, cool down and pour into a speci...

Embodiment 3

[0039]

[0040]

[0041] Put AA-EG-BG, PEG-2000, antioxidant, phosphoric acid and appropriate amount of DMF with a number average molecular weight of 2500G / MOL into a three-necked flask, stir evenly at high speed with a mechanical stirrer, raise the temperature to 50°C, and then add MDI to control the reaction temperature Pre-polymerize at 70-75°C for 1 hour; add MDI to increase viscosity after pre-polymerization, and add part of DMF and EG when the viscosity reaches 40-80Pa.s / 70°C; add the remaining MDI after fully stirring, and control the temperature at 70 Reaction at -80°C to increase viscosity, and depending on the reaction speed, add CATA (catalyst) as appropriate, add MDI moderately during the thickening process and gradually add DMF to dilute the viscosity until the viscosity reaches 300-350Pas / 25°C, add end-capped DMF Capped with methanol, then put in malic acid and additives, after being completely stirred evenly, cooled and poured into a special plastic bottle,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to polyurethane resin for breathable and moisture-permeable leather working gloves. The polyurethane resin is prepared from the following raw materials in parts by weight: 16.976% to 17.23% of polyester polyol, 4.244% to 4.308% of PEG-2000 (Polyethylene Glycol), 0.02% of I-1010, 0.002% of H3PO4, 0.878% to 1.202% of EG (Ethylene Glycol), 6.223% to 6.228% of MD (Methyl Diisocyanate), 0.03% of TL-1, 0.05% of CH3OH and M-70. The invention relates to a high-performance liquid detergent, which comprises the following components in percentage by weight: 1.5% of sodium dodecyl benzene sulfonate, 0.5% of HLD-8823, 70% of DMF and a proper amount of EATA. according to the polyurethane resin for the breathable and moisture-permeable working gloves and the preparation method of the polyurethane resin, the polyester polyol and the polyethylene glycol are matched for use, and the polyester polyol in the soft segment can endow the resin with excellent mechanical properties, mainly including wear resistance, scratch resistance, heat resistance, oil resistance and the like; the polyethylene glycol in the soft segment has hydrophilic performance, so that the polyethylene glycol has the capability of capturing water molecules, the barrier energy of-O-bonds in the molecular chain segment of the polyethylene glycol is relatively low, single bonds easily rotate in molecules, and certain free volume voids can be generated at the moment of the rotation process, so that a way is provided for permeation of water vapor; therefore, the polyurethane resin can be endowed with excellent moisture permeability.

Description

technical field [0001] The invention relates to the technical field of polyurethane resins, in particular to a polyurethane resin for breathable and moisture-permeable labor protection gloves and a preparation method thereof. Background technique [0002] Polyurethane labor protection gloves mainly protect human hands and skin to a certain extent, preventing people from being hurt by external effects in life, work and some special operations. Compared with knitted labor protection gloves, they are more excellent in wear resistance, scratch resistance and oil resistance. and heat resistance, both domestic and foreign sales have a very large market share. The production of polyurethane type labor protection gloves mainly adopts the glue-hanging process, and the knitted gloves are put on the glove mold, and then transported to the trough by the conveyor belt. The surface is coated with a layer of wet-process polyurethane resin, then solidified in a solidification tank and dried...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08L75/04C08L83/12C08K5/42C08J9/12A41D19/015C08G101/00
CPCC08G18/6607C08G18/425C08G18/4833C08G18/3206C08G18/4018C08J9/125C08J9/0033C08J9/0061A41D19/0055C08G2110/0083C08G2101/00C08J2375/04C08J2483/12
Inventor 张道东刘其春曲福庆
Owner 华大化学(安徽)有限公司
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