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Low-temperature-resistant soft PU (Poly Urethane) barrier film and composite waterproof joint strip

A technology of barrier film and low temperature resistance, applied in the direction of film/sheet adhesive, adhesive type, polyurea/polyurethane adhesive, etc., can solve the problem of windproof, waterproof clothing windproof, waterproof function, windproof, The wearing experience of waterproof clothing is poor, and the PVC barrier layer is easy to crack, etc., to achieve the effect of improving the wearing experience, good elasticity, and high bonding strength

Pending Publication Date: 2022-07-29
GUANGDONG YETOM NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing composite waterproof stickers will obviously harden in a low temperature environment of 0°C or below, and the PVC barrier layer will even become brittle and easy to crack, resulting in poor wearing experience of two-layer windproof and waterproof clothing, and affecting windproof and waterproof The windproof and waterproof functions of clothing bring a lot of inconvenience to consumers

Method used

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  • Low-temperature-resistant soft PU (Poly Urethane) barrier film and composite waterproof joint strip
  • Low-temperature-resistant soft PU (Poly Urethane) barrier film and composite waterproof joint strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add 100 parts of organosilicon polyether polyol (number average molecular weight 1000g / mol) to the reaction kettle, 110 ° C, vacuum stirring for 3H, cool down to 80 ° C, add 50 parts of fatty polyisocyanate, vacuum stirring, when The viscosity of the prepolymer is 7000 mPa.s, and the reaction is stopped by cooling down to obtain a silicone-modified polyurethane prepolymer.

[0029] (2) Mix more than 60 parts of silicone-modified polyurethane prepolymer (viscosity of 7000 mPa.s), 10 parts of aromatic isocyanate (viscosity of 500 mPa.s), 8 parts of ethylene glycol, 0.5 part of γ-glycidyl ether oxygen Propyltrimethoxysilane (KH-560), 0.2 part of diphenyl polysiloxane, 0.5 part of polycarbodiimide, 0.1 part of antioxidant 1010, 0.3 part of UV328 were stirred well, and vacuumed; then the mixture was coated with Cloth on the release paper, drying at 100 ℃ for 15min; then curing at 50±5 ℃ for 24h, remove the release paper to obtain a PU barrier film with a thickness of 0.0...

Embodiment 2

[0031] (1) Add 100 parts of organosilicon polyester polyol (number average molecular weight 1500g / mol) to the reaction kettle, 110 ° C, vacuum stirring for 3H, cool down to 80 ° C, add 60 parts of fatty polyisocyanate, vacuum stirring, when The viscosity of the prepolymer is 10,000 mPa.s, and the reaction is stopped by cooling down to obtain a silicone-modified polyurethane prepolymer.

[0032] (2) 70 parts or more of silicone-modified polyurethane prepolymer (viscosity of 10000mPa.s), 20 parts of aliphatic isocyanate (viscosity of 600mPa.s), 10 parts of 1,4-butanediol, 2 parts of γ- Glycidyl ether oxypropyl trimethoxysilane (KH-560), 0.5 part of diphenyl polysiloxane, 2 parts of polycarbodiimide, 0.5 part of antioxidant 1010, 0.5 part of UV328 were stirred evenly, and vacuumed; Then the mixture was coated on release paper, dried at 120°C for 15min; then aged at 70±5°C for 24h, the release paper was removed to obtain a PU barrier film with a thickness of 0.1mm; the TPU adhesiv...

Embodiment 3

[0034] (1) 50 parts of organosilicon polyether polyols (number-average molecular weight 2000g / mol), 50 parts of organosilicon polyester polyols (number-average molecular weight 1000g / mol) are added in the reactor, 110 ° C, vacuum stirring for 3H, The temperature was lowered to 80° C., 60 parts of aromatic polyisocyanate were added, and the mixture was vacuumed and stirred. When the viscosity of the prepolymer was 15,000 mPa.s, the reaction was stopped by cooling to obtain a silicone-modified polyurethane prepolymer.

[0035](2) 80 parts of poly or more silicone modified polyurethane prepolymer (viscosity of 15000mPa.s), 30 parts of aliphatic isocyanate (viscosity of 800mPa.s), 10 parts of neopentyl glycol, 5 parts of octylsilane Polymer (6608), 1 part of methylphenyl polysiloxane, 3 parts of polycarbodiimide, 1 part of antioxidant 168, 1 part of UV531 were stirred evenly and vacuumed; then the mixture was coated on release paper drying at 150°C for 20min; then curing at 80±5°C...

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Abstract

The invention provides a low-temperature-resistant soft PU (polyurethane) barrier film and a composite waterproof joint strip. The low-temperature-resistant soft PU barrier film comprises the following components in parts by weight: 60-80 parts of organic silicon modified polyurethane prepolymer; 10-30 parts of a curing agent; 5-10 parts of a chain extender; 0.5 to 5 parts of a coupling agent; 0.2 to 1 part of a leveling agent; 0.5 to 3 parts of polycarbodiimide; 0.1 to 1 part of an antioxidant; and 0.3-1 part of an ultraviolet light absorber. The invention provides a low-temperature-resistant soft PU (polyurethane) barrier layer and a composite waterproof joint strip for windproof and waterproof clothes. The composite waterproof joint strip is resistant to low temperature, soft, good in elasticity, good in washing resistance and water pressure resistance, and high in bonding strength for coatings of two layers of windproof and waterproof clothes. The composite waterproof joint strip is used for manufacturing two-layer windproof and waterproof clothes, the problem that the adhesive tape is hardened in the low-temperature environment of 0 DEG C or below can be effectively solved, the wearing experience of consumers is improved, and the composite waterproof joint strip has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a low temperature resistant soft PU barrier film and a composite waterproof sticker. Background technique [0002] At present, with the improvement of people's living standards, people are paying more and more attention to their own health, and people's yearning and pursuit for a higher quality of life have led to the rise of outdoor sports. People's favor, deeply loved by consumers. [0003] In the prior art, there are usually two ways to manufacture windproof and waterproof clothing: one is to sew the fabrics of windproof and waterproof clothing together with a sewing machine or similar sewing equipment, without pressing adhesive strips. The windproof and waterproof effect is not good, and there are problems of air leakage and water leakage in the wind and rain environment for a long time; the second method is to press the waterproof sticker on the suture...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L75/06C08L79/00C08J5/18C08G18/32C08G18/46C08G18/50C08G18/66C09J7/25A41D27/00A41D27/24C09J175/08
CPCC08J5/18C08G18/3206C08G18/4692C08G18/5096C08G18/4018C08G18/664C08G18/6674C09J7/25A41D27/00A41D27/245C08J2375/08C08J2375/06C08J2479/00C09J2475/00C09J2203/358C09J2301/304
Inventor 陈伯兴梁坤焕梁锋
Owner GUANGDONG YETOM NEW MATERIALS CO LTD
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