Ultra-high molecular weight polyethylene monofilament filter cloth and preparation method thereof

Abstract

The invention discloses an ultra-high molecular weight polyethylene monofilament filter cloth and a preparation method thereof. The filter cloth has a single-layer structure or a double-layer structure; the filter cloth in the form of a single-layer structure has a warp thread woven by a single monofilament, The weft is woven from another monofilament, and the diameter of the monofilament is 0.07-0.2mm; the filter cloth with double-layer structure has an arrangement ratio of 4:1 between the outer and inner warp and the outer and inner weft, and the binding method is joint Weft-knotting method, the warp of the surface tissue and the inner structure are respectively woven from one monofilament, and the weft is woven from another monofilament; the diameter of the monofilament of the above-mentioned surface tissue is 0.07-0.2mm, and the tensile strength is above 1100MPa ; The diameter of the monofilament in the tissue is 0.6mm, and the tensile strength is above 1000MPa. The above-mentioned monofilaments are all spun from ultra-high molecular weight polyethylene by melt spinning method, and are processed by heat setting and calendering in turn after weaving. The filter cloth of the invention has the advantages of high strength, good surface performance, long service life, etc., and the preparation process is simple and the cost is low.

Description

technical field [0001] The invention relates to an industrial filter cloth and a preparation method thereof, in particular to an ultra-high molecular weight polyethylene monofilament filter cloth and a preparation method thereof. Background technique [0002] Filtration textiles are an important branch of industrial textiles, and their output is about 10% of industrial textiles. [0003] At present, nylon, polyester and polypropylene monofilament filter cloths are the main filter materials used in metal ore dressing, sludge dewatering, comprehensive water pollution control, power plant desulfurization and denitrification, papermaking, fine chemical industry and other fields. In actual use, industrial filter cloths of these materials have more or less defects such as non-wear resistance, severe surface crystallization, easy hardening, high-viscosity materials are not easy to peel off, poor regeneration performance, and short service life, which seriously affect the production...

AI Technical Summary

Problems solved by technology

In actual use, industrial filter cloths of these materials have more or less defects such as non-wear resistance, severe surface crystallization, easy hardening, high-viscosity materials are not easy to peel off, poor regeneration performance, and short service life, which seriously affect the production process. filter effect

[0004] For example, in the mining field, due to the finer solid particles and higher ion content in water, the crystallization problem on the surface of the filter cloth is becoming more and more serious, resulting in high filtration resistance of the filter cloth, difficulty in peeling off the filter cake, and loss of the filter cloth. The replacement cycle is getting shorter and shorter, and even needs to be replaced every day, which not only seriously affects production efficiency, but also causes a substantial increase in production costs

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