A kind of preparation method of recycled non-woven fiber/plastic composite board

A technology of recycled fibers and non-woven fabrics, applied in the field of building materials, can solve problems such as air pollution, land occupation, and waste of resources, and achieve the effects of easy construction, reduced formaldehyde emissions, and low equipment requirements

Active Publication Date: 2018-02-09
江苏成力科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to incomplete statistics, about tens of thousands of tons of waste non-woven fabrics are used for filtering oil in various industries in Henan Province every year. A small part of these non-woven fabrics are made into sound insulation blankets and greenhouse insulation cotton after fiber opening, and most of them have been implemented Incineration operations or the use of landfill methods not only cause air pollution, occupy a large amount of land, but also cause waste of resources

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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  • A kind of preparation method of recycled non-woven fiber/plastic composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of the regenerated non-woven fabric fiber / PP composite board of the present embodiment, the steps are as follows:

[0020] (1) Cleaning: Waste non-woven fabrics were washed with high-pressure water (15 MPa), detergent (mainly composed of sodium alkylsulfonate and sodium fatty alcohol ether sulfate), dilute alkali (2 mol / L), dilute acid (2 mol / L), distilled water, and dried at 130°C for 2 hours;

[0021] (2) Fiber opening: the above-mentioned clean non-woven fabric is opened to obtain recycled short fibers;

[0022] (3) Air-laid: Air-laid regenerated short fibers to form a three-dimensional fiber web;

[0023] (4) Hot pressing molding: spread a certain amount of polypropylene pellets (melting point 167 °C) evenly on the above-mentioned three-dimensional fiber net, and hot press at 180 °C and 10 MPa pressure for 10 min to obtain a composite material with good mechanical properties. High-performance recycled non-woven fiber / PP composite board. Amo...

Embodiment 2

[0026] The preparation method of the regenerated non-woven fiber / HDPE composite board of the present embodiment, the steps are as follows:

[0027] (1) Cleaning: Waste non-woven fabrics were washed with high-pressure water (10 MPa), detergent (mainly composed of sodium alkyl sulfonate and sodium fatty alcohol ether sulfate), dilute alkali (5 mol / L), dilute acid (5 mol / L), distilled water, and dried at 130°C for 2 h;

[0028] (2) Fiber opening: the above-mentioned clean non-woven fabric is opened to obtain recycled short fibers;

[0029] (3) Air-laid: Air-laid regenerated short fibers to form a three-dimensional fiber web;

[0030] (4) Hot pressing molding: A certain amount of HDPE pellets (melting point 135°C) is evenly spread on the above-mentioned three-dimensional fiber net, and hot-pressed at 165°C and 7 MPa pressure for 15 minutes to obtain a composite with good mechanical properties. The recycled non-woven fiber / HDPE composite board, in which the quality of the three-d...

Embodiment 3

[0032] The preparation method of the regenerated non-woven fiber / LLDPE composite board of the present embodiment, the steps are as follows:

[0033] (1) Cleaning: waste non-woven fabrics were washed with high-pressure water (20 MPa), detergent (mainly composed of sodium alkylsulfonate and sodium fatty alcohol ether sulfate), dilute alkali (3 mol / L), dilute acid (3 mol / L), distilled water, and dried at 130°C for 2 h;

[0034] (2) Fiber opening: the above-mentioned clean non-woven fabric is opened to obtain recycled short fibers;

[0035] (3) Air-laid: Air-laid regenerated short fibers to form a three-dimensional fiber web;

[0036] (4) Hot pressing molding: spread a certain amount of LLDPE pellets (melting point of 123°C) evenly on the above-mentioned three-dimensional fiber net, and hot press at 143°C and 5 MPa pressure for 8 minutes to obtain a mold with good mechanical properties. The recycled non-woven fiber / LLDPE composite board, in which the quality of the three-dimensi...

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 manufacturing regenerated non-woven fiber / plastic composite boards. The method includes cleaning abandoned non-woven fabrics by the aid of high-pressure water, detergents, dilute alkali, dilute acid and distilled water respectively, drying the non-woven fabrics and splitting the non-woven fabrics to obtain regenerated short fibers; carrying out airflow network forming on the regenerated fibers to obtain three-dimensional fiber networks, carrying out hot-press molding on the three-dimensional fiber networks and plastic matrixes in a vacuum press machine to obtain the regenerated non-woven fiber / plastic composite boards. The method for manufacturing the regenerated non-woven fiber / plastic composite boards has the advantages that the regenerated non-woven fiber / plastic composite boards are manufactured by means of hot-press molding, processes are simple, the method has low requirements on equipment, a way of turning waste into wealth can be found for the non-degradable abandoned non-woven fabrics by the method for manufacturing the regenerated non-woven fiber / plastic composite boards, accordingly, resources can be recycled, and environmental stress can be effectively relieved; the regenerated non-woven fiber / plastic composite boards are high in strength and easy to construct, are abrasion-resistant, impact-resistant, corrosion-resistant, sound-insulation, heat-insulation and attractive; chemical reagents such as adhesive are omitted, accordingly, formaldehyde emission can be effectively reduced, environments can be effectively protected, and the like.

Description

technical field [0001] The invention relates to a resource substitute product in the field of building materials, in particular to a method for preparing plastic composite boards for building materials by using waste non-woven fabrics. Background technique [0002] At present, the treatment of waste non-woven fabrics has become an urgent issue to protect the environment. Only one small aluminum plate factory discards about 1.5 tons of non-woven fabrics for filtering oil every year. With the development of the economy, edible oil, beverages and other industries waste The number of non-woven fabrics is also increasing. According to incomplete statistics, about tens of thousands of tons of waste non-woven fabrics are used for filtering oil in various industries in Henan Province every year. A small part of these non-woven fabrics are made into sound insulation blankets and greenhouse insulation cotton after fiber opening, and most of them have been implemented Incineration ope...

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 Patents(China)
IPC IPC(8): B32B37/06B32B37/10B32B5/02B32B27/12
CPCB32B5/022B32B27/12B32B37/06B32B37/10B32B2262/10B32B2305/20B32B2305/38B32B2307/102B32B2307/304B32B2307/554B32B2307/7242B32B2307/7265B32B2419/00
Inventor 石素宇王利娜闫新辛长征侯涛
Owner 江苏成力科技发展有限公司
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