A kind of high tensile strength waterproof and moisture-permeable composite fabric material and preparation process thereof

Abstract

The invention discloses a high tensile strength waterproof and moisture-permeable composite fabric material and a preparation process thereof. The composite fabric material is prepared by compounding a base material and a functional layer with an adhesive, and the functional layer is made of ultra-high molecular weight polyethylene. be made of. By setting the material and preparation process in the composite fabric material, the present invention uses textile fabric as the base material, selects polyethylene with strong hydrophobicity as the functional layer material, and forms a nano-scale microporous structure with good water vapor. Molecular permeability and moisture permeability can well replace the composite materials used in the current field; the substrate is dispensed in an arrangement and thermally compounded with the functional layer to obtain a composite fabric material, which has improved tensile strength and excellent It can be well applied in various fields, and the garments made have the characteristics of high heat preservation, high puncture resistance to sharp objects and good moisture permeability.

Description

technical field

[0001] The invention relates to the technical field of outdoor fabrics, in particular to a high tensile strength waterproof and moisture-permeable composite fabric material and a preparation process thereof. Background technique

[0002] Outdoor clothing is a necessary protective equipment for explorers, outdoor sports enthusiasts and long-distance travelers. At present, it is mainly made of fabrics produced by American Gore Company, etc., but its material is made of relatively expensive PTFE microporous. The membrane material is used as a breathable interlayer, so the related outdoor clothing is more expensive; in addition, some other domestic and foreign manufacturers have tried to use other materials to replace the PTFE material, although it has improved in terms of breathability, but because of Too low strength to be used in harsh environments such as polyurethane etc. Or adopt other preparation process to reduce cost, but the effect is not obvious. The...

Examples

Embodiment 1

[0035] (1) Preparation of functional layer:

[0036] (a) mixing: take polyethylene with a molecular weight of 900,000 and a molecular weight distribution coefficient of 0.9 and white oil into a twin-screw extruder, melt, shear, and blend to obtain a mixture, and cast to form sheet A;

[0037] (b) Longitudinal stretching: After the sheet A is cooled, longitudinal stretching is performed to form a longitudinal hole structure, and the sheet B is obtained;

[0038] (c) One-time lateral stretching: take sheet B and carry out lateral stretching. During stretching, the stretching angle increases stepwise, and is divided into 3 stretching orientations. The angle ranges are: the first angle of 15°, The second angle is 45°, the third angle is 75°, the stretching temperature is 129°C, and sheet C is obtained;

[0039](d) extraction: the sheet C is immersed in the extraction solution, and the white oil therein is extracted to form a formed pore structure to obtain the sheet D;

[0040] ...

Embodiment 2

[0050] (1) Preparation of functional layer:

[0051] (a) mixing: take polyethylene with a molecular weight of 850,000 and a molecular weight distribution coefficient of 0.9 and white oil into a twin-screw extruder, melt, shear, and blend to obtain a mixture, and cast to form sheet A;

[0052] (b) Longitudinal stretching: After the sheet A is cooled, longitudinal stretching is performed to form a longitudinal hole structure, and the sheet B is obtained;

[0053] (c) One-time lateral stretching: take sheet B and carry out lateral stretching. During stretching, the stretching angle increases in a stepwise manner, and is divided into 3 stretching orientations. The angle ranges are: the first angle of 15°, The second angle is 45°, the third angle is 75°, the stretching temperature is 129°C, and sheet C is obtained;

[0054] (d) extraction: the sheet C is immersed in the extraction solution, and the white oil therein is extracted to form a formed pore structure to obtain the sheet ...

Embodiment 3

[0065] (1) Preparation of functional layer:

[0066] (a) mixing: take polyethylene with a molecular weight of 870,000 and a molecular weight distribution coefficient of 1.1 and white oil into a twin-screw extruder, melt, shear, and blend to obtain a mixture, and cast to form sheet A;

[0067] (b) Longitudinal stretching: After the sheet A is cooled, longitudinal stretching is performed to form a longitudinal hole structure, and the sheet B is obtained;

[0068] (c) One-time lateral stretching: take sheet B and carry out lateral stretching. During stretching, the stretching angle increases in a stepwise manner, and is divided into 3 stretching orientations. The angle ranges are: the first angle of 15°, The second angle is 45°, the third angle is 75°, the stretching temperature is 129°C, and sheet C is obtained;

[0069] (d) extraction: the sheet C is immersed in the extraction solution, and the white oil therein is extracted to form a formed pore structure to obtain the sheet ...

technical field

[0001] The invention relates to the technical field of outdoor fabrics, in particular to a high tensile strength waterproof and moisture-permeable composite fabric material and a preparation process thereof. Background technique

[0002] Outdoor clothing is a necessary protective equipment for explorers, outdoor sports enthusiasts and long-distance travelers. At present, it is mainly made of fabrics produced by American Gore Company, etc., but its material is made of relatively expensive PTFE microporous. The membrane material is used as a breathable interlayer, so the related outdoor clothing is more expensive; in addition, some other domestic and foreign manufacturers have tried to use other materials to replace the PTFE material, although it has improved in terms of breathability, but because of Too low strength to be used in harsh environments such as polyurethane etc. Or adopt other preparation process to reduce cost, but the effect is not obvious. The...

Examples

Embodiment 1

[0035] (1) Preparation of functional layer:

[0036] (a) mixing: take polyethylene with a molecular weight of 900,000 and a molecular weight distribution coefficient of 0.9 and white oil into a twin-screw extruder, melt, shear, and blend to obtain a mixture, and cast to form sheet A;

[0037] (b) Longitudinal stretching: After the sheet A is cooled, longitudinal stretching is performed to form a longitudinal hole structure, and the sheet B is obtained;

[0038] (c) One-time lateral stretching: take sheet B and carry out lateral stretching. During stretching, the stretching angle increases stepwise, and is divided into 3 stretching orientations. The angle ranges are: the first angle of 15°, The second angle is 45°, the third angle is 75°, the stretching temperature is 129°C, and sheet C is obtained;

[0039](d) extraction: the sheet C is immersed in the extraction solution, and the white oil therein is extracted to form a formed pore structure to obtain the sheet D;

[0040] ...

Embodiment 2

[0050] (1) Preparation of functional layer:

[0051] (a) mixing: take polyethylene with a molecular weight of 850,000 and a molecular weight distribution coefficient of 0.9 and white oil into a twin-screw extruder, melt, shear, and blend to obtain a mixture, and cast to form sheet A;

[0052] (b) Longitudinal stretching: After the sheet A is cooled, longitudinal stretching is performed to form a longitudinal hole structure, and the sheet B is obtained;

[0053] (c) One-time lateral stretching: take sheet B and carry out lateral stretching. During stretching, the stretching angle increases in a stepwise manner, and is divided into 3 stretching orientations. The angle ranges are: the first angle of 15°, The second angle is 45°, the third angle is 75°, the stretching temperature is 129°C, and sheet C is obtained;

[0054] (d) extraction: the sheet C is immersed in the extraction solution, and the white oil therein is extracted to form a formed pore structure to obtain the sheet ...

Embodiment 3

[0065] (1) Preparation of functional layer:

[0066] (a) mixing: take polyethylene with a molecular weight of 870,000 and a molecular weight distribution coefficient of 1.1 and white oil into a twin-screw extruder, melt, shear, and blend to obtain a mixture, and cast to form sheet A;

[0067] (b) Longitudinal stretching: After the sheet A is cooled, longitudinal stretching is performed to form a longitudinal hole structure, and the sheet B is obtained;

[0068] (c) One-time lateral stretching: take sheet B and carry out lateral stretching. During stretching, the stretching angle increases in a stepwise manner, and is divided into 3 stretching orientations. The angle ranges are: the first angle of 15°, The second angle is 45°, the third angle is 75°, the stretching temperature is 129°C, and sheet C is obtained;

[0069] (d) extraction: the sheet C is immersed in the extraction solution, and the white oil therein is extracted to form a formed pore structure to obtain the sheet ...

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