Preparation method for ultra high molecular weight polyethylene (UHMWPE) fiber/thermosetting epoxy resin high-strength anti-bending composite board
An epoxy resin and thermosetting technology, applied in the field of materials, can solve problems such as poor compatibility, high specific modulus, and affecting organic bonding
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[0037] The invention provides a method for preparing a UHMWPE fiber / thermosetting epoxy resin high-strength anti-bending composite board, comprising the following steps:
[0038] (1) Preparation of UHMWPE staple fiber yarn woven fabric;
[0039] (2) Fabric pre-treatment;
[0040] (3) oxidation modification treatment;
[0041] (4) Coupling agent modification treatment;
[0042] (5) Composite board preparation.
[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings. Please see figure 1 and figure 2 , figure 1 It is a layup schematic diagram of the preparation method of a UHMWPE fiber / thermosetting epoxy resin high-strength anti-bending composite board according to the present invention; figure 2 It is a test schematic diagram of a method for preparing a UHMWPE fiber / thermosetting ep...
Embodiment 1
[0072] A method for preparing a UHMWPE fiber / thermosetting epoxy resin high-strength anti-bending composite board, comprising:
[0073] (1) Preparation of UHMWPE staple fiber yarn woven fabric
[0074]Select UHMWPE fiber with a linear density of 2.1dtex~2.7dtex and a length of 38mm~51mm, and make a single yarn with a linear density of 194dtex (20Ne)~292dtex (30Ne) through ring spinning. The above-mentioned single yarn is selected to make a plain weave woven fabric with a warp yarn density of 320 yarns / 10cm~480 yarns / 10cm and a weft yarn density of 120 yarns / 10cm~140 yarns / 10cm. The above-mentioned single yarn can also be processed into double-ply yarn, and then made into a plain weave woven fabric with a warp yarn density of 240 yarns / 10cm~320 yarns / 10cm and a weft yarn density of 70 yarns / 10cm~95 yarns / 10cm. The finished product is called Fabric 1.
[0075] (2) Fabric pre-treatment
[0076] The method is to soak the above fabric 1 in acetone solution, treat it in an ultras...
Embodiment 2
[0096] This implementation case shows a UHMWPE fiber / thermosetting epoxy resin high-strength anti-bending composite board made according to the first step of the embodiment:
[0097] Using 32Ne / 2 UHMWPE staple fiber yarn as warp yarn, 21NeUHMWPE staple fiber yarn as weft yarn, warp density 300 / 10cm, weft density 120 / 10cm to make plain weave fabric, made of UHMWPE fiber / thermosetting epoxy resin composite After the tensile test, the average tensile breaking strength can reach 6.7GPa, which is close to the strength of 7 GPa ~ 8.5GPa of the composite plate made of similar weight carbon fiber fabric. Tested by the three-point bending test, the displacement of the bending point can reach more than 2cm, and it will not break. However, in the three-point bending test of the same kind of carbon fiber composite board, it will be brittle when the displacement is less than 0.5mm.
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Abstract
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