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Preparation method of anti-flaming washable filter material

A filter material, washable technology, applied in filtration and separation, separation methods, chemical instruments and methods, etc., to achieve the effect of reducing use costs, reducing emissions, and protecting the environment

Active Publication Date: 2009-05-06
HENAN ANKELIN FILTER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to disclose a preparation method of a flame-retardant and washable filter material, so as to meet the problems of resource conservation and environmental protection in contemporary society. The flame-retardant and washable filter material in the present invention is made of polyester or polypropylene fiber fine The filter layer and polyester or polypropylene fiber coarse filter layer are needle-punched to form a base material, and then soaked in an aqueous solution of flame-retardant glue made of water-based polyurethane, cyclic phosphate flame retardant, and sodium dihydrogen phosphate in a certain proportion. Double-roll rolling, drying, spraying flame-retardant glue solution, drying and ironing to form a filter material with fiber intersections fixed by glue spots and fiber surface covered by a smooth glue layer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Preparation of fine filter layer:

[0016] Polyester or polypropylene fibers with a fineness of 2dtex and short fibers with a length of 50mm are uniformly mixed, and are opened and carded, laid, and needled. Made of polyester or polypropylene fibers intertwined with each other. The thickness is 0.5mm.

[0017] (2) Preparation of coarse and fine filter layer composited into trapezoidal structure filter substrate:

[0018] The fineness of polyester or polypropylene staple fibers in the coarse filter layer is 8dtex, and the length is 51mm. The fineness of three-dimensional crimped polyester staple fibers is 6dtex, and the length is 40mm. Above and acupuncture, the speed of the acupuncture machine is 1400 times / min, and the density of needles is 3000 pieces / m, so that the two layers of fibers are intertwined and compounded to form a trapezoidal structure filter substrate, in which the fine filter layer is made of polyester or polypropylene staple fibers : coarse filt...

Embodiment 2

[0035] (1) Preparation of fine filter layer:

[0036] Polyester or polypropylene fibers with a fineness of 4dtex and short fibers with a length of 65mm are evenly mixed, and are opened and carded, laid, and needled. Made of polyester or polypropylene fibers intertwined with each other. The thickness is 1mm.

[0037] (2) Preparation of coarse and fine filter layer composited into trapezoidal structure filter substrate:

[0038] The fineness of polyester or polypropylene staple fibers in the coarse filter layer is 14dtex, and the length is 65mm. The fineness of three-dimensional crimped polyester staple fibers is 12dtex, and the length is 50mm. Above and acupuncture, the speed of the acupuncture machine is 1200 times / min, and the density of the needles is 2400 pieces / m, so that the two layers of fibers are intertwined and compounded to form a trapezoidal structure filter substrate, in which the fine filter layer is made of polyester or polypropylene staple fibers : coarse fil...

Embodiment 3

[0055] (1) Preparation of fine filter layer:

[0056] Polyester or polypropylene fibers with a fineness of 6dtex and short fibers with a length of 80mm are evenly mixed, and are opened and carded, laid, and needled. Made of polyester or polypropylene fibers intertwined with each other. The thickness is 1mm.

[0057] (2) Preparation of coarse and fine filter layer composited into trapezoidal structure filter substrate:

[0058] The fineness of polyester or polypropylene staple fibers in the coarse filter layer is 20dtex, and the length is 80mm. The fineness of three-dimensional crimped polyester staple fibers is 18dtex, and the length is 60mm. Above and acupuncture, the speed of the acupuncture machine is 900 times / min, and the density of the needles is 1800 pieces / m, so that the two layers of fibers are intertwined and compounded to form a trapezoidal structure filter substrate, in which the fine filter layer is made of polyester or polypropylene staple fibers : coarse filt...

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Abstract

The invention discloses a preparation method of a flame-retardant and washable filter material. The flame-retardant and washable filter material is the filter material which is prepared by the following steps: a basic material is acupunctured and compounded by a polyester or a polypropylene fiber fine filter layer with a polyester or a polypropylene rough fine filter layer, then is emerged into a flame-retardant solution which is prepared by waterborne polyurethane, an acyclic phosphate flame retardant and sodium dihydrogen phosphate according to a certain proportion and then compacted by a twin-roll and dried and ironed out after being sprayed with the flame-retardant solution; and the formed fiber crossing points are fixed by gel points with the filter material with the fiber surface being covered by a smooth glue layer. The filter material is flame-retardant and washable.

Description

Technical field: [0001] The invention relates to a flame-retardant and water-washable filter material and a preparation method thereof, in particular to a filter material for systems such as centralized ventilation, central air conditioning, and liquid purification. Background technique: [0002] China is the most populous developing country in the world. Since the end of the 1970s, with the continuous and rapid development of China's economy, the environmental problems that have emerged in stages in the industrialization process of developed countries for hundreds of years have concentrated in China. The contradiction between environment and development Eyes are prominent. The relative shortage of resources, fragile ecological environment, and insufficient environmental capacity have gradually become major problems in China's development. my country's "Eleventh Five-Year Plan" puts forward higher requirements for environmental protection. Water, gas, sound, slag and other ...

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): B01D39/16
Inventor 李瑞乐
Owner HENAN ANKELIN FILTER IND
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