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Method for preparing intelligent waterproof moisture permeable tent fabric

A waterproof and moisture-permeable, tent fabric technology, applied in the field of fabric preparation, can solve problems such as insufficient trigger temperature, affecting the waterproof and moisture-permeable effect of fabrics, etc. Effect

Inactive Publication Date: 2012-11-28
SHANGHAI YANGFAN INDAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in the production process, the trigger temperature of the existing tent fabric coated with shape memory polyurethane is not close to the normal body temperature of the human body, which affects the waterproof and moisture-permeable effect of the fabric

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The preparation method of the smart waterproof and moisture-permeable tent fabric of the present invention includes the steps of preparing the shape memory polyurethane emulsion, the step of adjusting the trigger temperature of the shape memory polyurethane, the water repellent finishing step of the base fabric and the coating finishing step of the coating.

[0021] The preparation steps of shape memory polyurethane are: first add polyether polyol of different proportions into the container, then vacuumize the container and heat the polyether polyol to 110~120℃ for dehydration for 2-3h, and then lower the temperature to 65~75 After ℃, pour nitrogen into the container, then add 4,4-diphenylmethane diisocyanate MDI dissolved in N,N'-dimethylformamide DMF solution into the container, and gradually increase the temperature to 75±5℃ for reaction 1.5~2h, when the temperature is lowered to 50~60℃, gradually add N,N'-dimethylformamide DMF solution containing 1,4-butanediol BDO into...

Embodiment 1

[0027] The preparation method of the intelligent waterproof and moisture-permeable tent fabric of the present invention includes:

[0028] The preparation steps of shape memory polyurethane are: first add polyether polyol of different proportions into the container, then vacuumize the container and heat the polyether polyol to 120°C for dehydration for 2.5h, then cool to 70°C and put it in the container Blow in nitrogen, and then add 4,4-diphenylmethane diisocyanate MDI dissolved in N,N'-dimethylformamide DMF solution into the vessel, gradually increase the temperature to 75°C and react for 2h, then cool to 50°C At the time, gradually add the N,N'-dimethylformamide DMF solution containing 1,4-butanediol BDO to the container, and react at 60℃ for 1.5h, then add methanol to the container under stirring Terminate the reaction and degas in vacuum;

[0029] To adjust the trigger temperature of shape memory polyurethane, adjust the ratio of the soft and hard segments of the polyurethane...

Embodiment 2

[0034] The preparation method of the intelligent waterproof and moisture-permeable tent fabric of the present invention includes:

[0035] The preparation steps of shape memory polyurethane are the same as in Example 1;

[0036] The adjustment step of the trigger temperature of the shape memory polyurethane is to adjust the ratio of the soft and hard segments of the polyurethane through the DSC test regulator. Refer to "GB / T17594-1998 Textile Material Thermal Transition Temperature Test Method Differential Scanning Calorimetry". The temperature of the whole test is The range is -50~100℃, the heating rate is 10℃ / min, the whole test process is carried out under the protection of nitrogen, and the 4,4-diphenylmethane diisocyanate MDI, polyethylene glycol PEG, and polycarbonate in the shape memory polyurethane are adjusted. When the ratio of butylene diacid PBA and 1,4-butanediol BDO is 3.0:0.8:0.4:2.0, the trigger temperature Tg of shape memory polyurethane is 35~36℃, which can make t...

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 discloses a method for preparing an intelligent waterproof moisture permeable tent fabric, comprising: a step of preparing a shape memory polyurethane emulsion, a step of adjusting the trigger temperature of the shape memory polyurethane, a step of water-repellent finishing of a base fabric, and a step of coating and finishing a coating layer. The proportion between the soft, hard polyurethane segments is adjusted, thus the trigger temperature of the shape memory polyurethane is made to be close to the human temperature, and the mutation in thermodynamics performance of the shape memory polyurethane at the trigger temperature-high molecular micro-Brownian movement is used and combined with the micropore moisture permeable film coating technology, thus the hydrophilic moisture diffusion performance of the shape memory polyurethane film formed on the base fabric is reinforced, and when the temperature is above the trigger temperature, the water steam well permeates the fabric, so as to play a water-proof moisture permeable role and when the temperature is below the trigger temperature, the fabric plays a wind-proof thermal insulation role.

Description

Technical field [0001] The invention relates to a preparation method of a fabric, in particular to a preparation method of an intelligent waterproof and moisture-permeable tent fabric. Background technique [0002] Waterproof and moisture-permeable fabrics are called "breathable fabrics" abroad, which means that the fabric will not be permeated or saturated by water under a certain water pressure, but the sweat vapor emitted by the human body can diffuse through the fabric or be transmitted to the outside world without being physically present. Condensation accumulates between the watch and the fabric to make people feel sticky and sultry, thus realizing the unity of the waterproof performance and moisture permeability of the fabric. [0003] At present, waterproof and moisture-permeable fabric products are mainly divided into three categories: compact fabrics, mostly woven with polyester microfibers as warp and weft yarns, and then super-high shrinkage finishing and waterproof tre...

Claims

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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Application Information

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IPC IPC(8): D06M15/564D06M15/568D06M15/277C08G18/66C08G18/48C08G18/32C08G18/10D06M101/32
Inventor 李国强林锦顺王文彬崔鸣
Owner SHANGHAI YANGFAN INDAL CO LTD
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