A kind of hydrophilic base cloth and its manufacturing method

A technology of hydrophilic base cloth and manufacturing method, which is applied in the direction of non-woven fabrics, textiles, papermaking, and road construction reinforcements, etc. Seepage and anti-reflection base structure, not suitable for road base, etc., to achieve the effect of high strength, good hydrophilicity, and easy impregnation

Inactive Publication Date: 2011-12-14
HUNAN NONWOVEN CNNC
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AI Technical Summary

Problems solved by technology

However, with the rapid development of modern highways, the requirements of modern highway construction technology for geotechnical materials continue to increase. The tensile strength, affinity and bonding strength of existing geotechnical materials cannot meet the high-quality requirements of road engineering.
Among the existing geotechnical materials, the tensile strength of the polyester filament base fabric can meet this requirement, but the base fabric has poor water permeability and no reverse filter function, so it is not suitable for road bases
However, when the singeing geotextile is combined with high-temperature asphalt, it is easy to produce shrinkage deformation, resulting in instability of the anti-seepage base, shrinkage displacement damages the structure of the anti-seepage and anti-reflection base, and affects the use effect

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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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0027] In step (2), the amount of melt extrusion is controlled at 140 g / s, the speed of web laying is controlled at 8 m / min, the depth of needling is 11.5 mm, and the density of needling is 80 punctures / cm 2 .

[0028] In step (3), the ratio of the binder is by weight, water: hydrophilic base binder: crosslinking agent = 1:0.90:0.1.

[0029] In step (4), the drying time is 60 seconds.

[0030] The prepared hydrophilic base fabric has a unit area weight of 250g / ㎡, a thickness of 0.95㎜, a tensile strength of 13000N / m, a tear strength of 300N, and a vertical permeability coefficient of 0.85cm / s.

[0031] The rest are the same as embodiment 1.

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Abstract

The invention discloses hydrophilic base fabric with high tensile strength and good water permeability. The hydrophilic-group fabric is characterized in that the gram weight per unit area is 100-280g/m<2>, the thickness is 0.4-1.0mm, the tensile strength is 4000-14000N/m, the tearing strength is 130-450N, and the vertical permeation coefficient is 0.1-1.0cm/s. The manufacturing method of the hydrophilic base fabric comprises the steps of: raw material processing, net forming, impregnating and bonding, drying and sizing. The product of the hydrophilic base fabric has the characteristics of high strength, good hydrophilcity, small thermal contractibility, easiness for impregnation and the like, has high bonding strength with modified asphalt, is easy for construction, and completely meets the requirements of high-grade highways on high performance of materials.

Description

technical field [0001] The invention relates to a non-woven geotechnical material, in particular to a hydrophilic base cloth and a manufacturing method thereof. Background technique [0002] At present, in the reconstruction of urban roads and highway construction, non-woven geotechnical materials have been widely used in the reinforcement, isolation, filtration of road bases, and the prevention and treatment of reflection cracks in cement concrete bases. Among them, polyester filament geotextiles and singeing geotextiles are the most used. Although these materials have high strength, good extensibility, creep performance and aging resistance. However, with the rapid development of modern highways, the requirements of modern highway construction technology for geotechnical materials continue to increase. The tensile strength, affinity and bonding strength of existing geotechnical materials cannot meet the high-quality requirements of road engineering. Among the existing geo...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/12D04H3/10E01C11/16
Inventor 彭友勇杨建辉欧阳清熊建生李智辉欧阳志屈东鑫毛向荣
Owner HUNAN NONWOVEN CNNC
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