UHMWPE sheet material manufacturing method

A manufacturing method and sheet technology, applied in the direction of non-woven fabrics, textiles and papermaking, etc., can solve the difficult problems of uniform fiber height arrangement, prepreg thickness uniformity control, fiber spreading uniformity to be improved, etc.

Inactive Publication Date: 2017-03-08
BEIJING TONGYIZHONG NEW MATERIAL TECH CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The above-mentioned U.S. Patent US4916000 only discloses a simple preparation method for prepregs, and does not control the thickness uniformity of prepregs. If it is desired to improve the anti-ballistic performance, it is necessary to improve the uniformity and flatness of prepregs, while prepregs The uniformity of the belt is directly related to the uniformity of the spreading, and the US p

Method used

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  • UHMWPE sheet material manufacturing method
  • UHMWPE sheet material manufacturing method
  • UHMWPE sheet material manufacturing method

Examples

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Embodiment 1

[0040] The manufacturing method of the UHMWPE sheet of this embodiment includes the following steps: unwinding the commercially available ultra-high molecular weight polyethylene fiber 800D / 840F (strength 36cN / dtex, modulus 1300cN / dtex) successively through the creel, clustering frame, stretching Reed arrangement, and then use the spreading equipment to spread the thread arrangement, and then glue the spread fiber bundle through the dipping tank. In this embodiment, polyurethane emulsion adhesive is used, and the glue amount is about 30%. It is dried at 65°C in a hot shaft, and finally wound up by a winding device.

[0041] The spinning equipment used in this embodiment is as figure 1As shown, it includes four spreading units arranged at intervals, and each spreading unit includes a first spreading member—a spreading roller 1, a second spreading member—a spreading beam 2 located downstream of the first spreading member , wherein the spreading roller 1 is cylindrical with a di...

Embodiment 2

[0046] The manufacturing method of the UHMWPE sheet of the present embodiment comprises the following steps: unwinding the commercially available ultra-high molecular weight polyethylene fiber 400D / 400F (strength 37cN / dtex, modulus 1350cN / dtex) successively on the creel, clustering on the cluster frame, stretching Reed arrangement, and then use the spreading equipment to spread the thread arrangement, and then glue the spread fiber bundle through the dipping tank. In this embodiment, polyurethane emulsion adhesive is used, and the glue amount is about 25%. Dry at 70°C through a hot shaft, and finally wind up through a winding device.

[0047] The spinning equipment in this embodiment is as figure 2 As shown, different from Embodiment 1, in this embodiment, each spreading unit is provided with two first spreading members with different diameters—the spreading roller 1, and the diameter of the spreading roller 1 located downstream is 50mm, the diameter of the spreading roller ...

Embodiment 3

[0052] The manufacturing method of the UHMWPE sheet of the present embodiment comprises the following steps: unwinding the commercially available ultra-high molecular weight polyethylene fiber 800D / 360F (strength 38cN / dtex, modulus 1450cN / dtex) successively on the creel, clustering on the cluster frame, stretching Reed arrangement, and then use the spreading equipment to spread the thread arrangement, and then glue the spread fiber bundle through the dipping tank. In this embodiment, polyurethane emulsion adhesive is used, and the glue amount is about 22%. Dry at 68°C in a hot shaft, and finally wind up with a winding device.

[0053] The spinning equipment in this embodiment is as image 3 As shown, different from Embodiment 1, the spreading beam 2 in this embodiment is a triangular prism with a side length of 95 mm in cross section, and the diameter of the spreading roller is 94 mm. same.

[0054] In this embodiment, during spinning, the rotational speeds of the first spin...

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Abstract

The invention discloses a UHMWPE sheet material manufacturing method comprising steps of unwinding, clustering, laying out, spreading, gluing and drying fiber bundles. A filament spreading device is employed in the spreading step; the filament spreading device comprises a plurality of filament spreading units; each filament spreading unit has a first filament spreading member horizontally arranged and a second filament spreading member horizontally arranged; the first filament spreading member is provided with an arc-shaped curved surface; the second filament spreading member is provided a corner angle; and the fiber beam is spread via contacting the arc-shaped curved surface of the first filament spreading member and the corner angle of the second filament spreading member. Elastoresistance performance can be improved by at least 10% for a single-oriented pre-dip belt manufactured by the method at the same areal density.

Description

technical field [0001] The invention relates to the technical field of ultra-high molecular weight polyethylene fiber production equipment, in particular to a method for manufacturing UHMWPE sheets. Background technique [0002] The manufacturing method of ultra-high molecular weight polyethylene (UHMWPE for short) sheet includes two kinds: weaving method and non-woven method, and the unidirectional prepreg tape can be obtained through the non-woven method. According to empirical data, UHMWPE fiber is most suitable for making unidirectional prepreg tape, which avoids the weakest point in the woven fabric caused by the reflection and superposition of stress waves at the intersection of fibers, and the prepreg tape with unidirectional arrangement is more It is beneficial to the energy absorption and energy dissipation of the fiber. [0003] U.S. Patent US4916000 discloses a preparation method of high-strength and high-modulus polyethylene fiber unidirectional prepreg tape. In...

Claims

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Application Information

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IPC IPC(8): D04H1/4291D04H1/58
Inventor 陈振坤马天黄兴良黄献聪李伟萍
Owner BEIJING TONGYIZHONG NEW MATERIAL TECH CORP
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