A kind of compound fibre draw-winding rod and preparation method thereof
Technical field
The present invention relates to a kind of draw-winding rod of pulling and locate by the hydrophone on the naval vessel and preparation method thereof that is used to, belong to field of compound material.
Technical background
Draw-winding rod is a kind of towing instrument commonly used of drawing and locating of being used to, and is mainly used to pull and locate the hydrophone on the naval vessel.During hydrophone locating lug system works, medium complexity of living in, stressing conditions is changeable, and needs frequent folding and unfolding and coiling to deposit.Therefore require it to have resisting sea water erosion, high tensile modulus of elasticity, good bending property and Combination properties such as crooked restorability and major rupture strain, common material can't satisfy its Combination property requirement fully.
At present, what adopted domestic towing commonly used in the hydroacoustic electronic warfare system and location is the rod member of homogenous material preparation, and the modulus of metallic material is higher, but its withstanding corrosion not; Tradition pull bar product material pulling strengrth is higher, but transverse strength is low, easily produces splitting and distortion in the long-term crooked folding and unfolding process, all can not satisfy its operating needs.
Summary of the invention
The purpose of this invention is to provide a kind of difficult distortion, transverse strength height, tensile modulus and bending modulus and surpass more than the 100GPa, straightness accuracy recovers, and has draw-winding rod of excellent corrosion resisting performance and preparation method thereof.
For achieving the above object, the present invention has adopted following technical scheme: a kind of compound fibre draw-winding rod, comprise core bar and covering, it is characterized in that: core bar is a pole spar, covering is made up of winding layer and preservative coat, described winding layer oppositely is entwined by coaxial after at least two strands of fibers and the mixed with resin, and described preservative coat radially adheres to the winding layer surface after by multiply fiber and mixed with resin and forms.
Above-mentioned draw-winding rod, its characteristics are: described pole spar for the multi-strand carbon fiber behind resin dipping through the mould formed by extrusion and tension, its carbon fiber and mixed with resin ratio of weight and number are 60~70: 30~40.
Above-mentioned draw-winding rod, its characteristics are: described winding layer fiber adopts high-strength glass fibre, and described preservative coat fiber adopts alkali-free glass fibre.
Above-mentioned draw-winding rod, its characteristics are: described high-strength glass fibre and mixed with resin ratio of weight and number are 60~80: 20~40; The mixed weight portion rate of described alkali-free glass fibre and resin is 50~70: 30~50.
Above-mentioned draw-winding rod, its characteristics are: described resin is the glue shape, described glue shape resin is a vinylite.
Above-mentioned draw-winding rod, its characteristics are: described core bar radius is at least 2.47mm, and the volume ratio that its sectional area accounts for is r
2/ 4
2, shared volume ratio is (1-r in the described covering cross section
2/ 4
2) * 9/10.
A kind of method for preparing the described draw-winding rod of claim 1, its characteristics are: adopt following steps successively:
1) draws core bar; Select the carbon fiber of 60~70 weight portions for use; Be impregnated in the vinylite glue of 30~40 weight portions,, enter mould (7) pultrusion, then along lead coiled core bar rotating disk through preforming template (6) extruding glue;
2) draw-winding rod moulding; The core bar rotating disk is fixed, be provided with the winding wheel that twines yarn along the core bar lead, core bar is by twining the wheel center, twine wheel and be provided with at least two, described winding wheel is connected with motor by gear, motor twines the wheel rotation with certain speed by gear driven, twines that yarn is two-way to be wrapped on the core bar; Be provided with the alkali-free glass fibre yarn frame in core bar rotating disk both sides, be provided with the glue groove that fills the vinylite glue in the creel corresponding section, alkali-free glass fibre floods the back by preforming template (12) through glue, radially attached on the core bar that has winding layer, after being shaped to one by preforming template (13) again, enter mould (14) pultrusion.
Above-mentioned preparation method, its characteristics are: described winding yarn is a high-strength glass fibre.
Above-mentioned preparation method, its characteristics are: described preforming template (6) is provided with several impartial holes that distributes, and described hole is that carbon fiber yarn number is by the place; Described preforming template (13) center is provided with the core bar knock hole, and the core bar that twines high-strength glass fibre passes knock hole, is provided with the alkali-free glass fibre yarn passing hole hole of some equalizations at described knock hole periphery place; Preforming template (14) center is provided with the plastic squeeze hole, and the alkali-free glass fibre and the winding layer that will have glue are extruded into one.
The present invention adopts multistep combination to draw the draw-winding rod of winding technologe preparation, and the cross section of bar is divided into three parts, and core is that the thin bar of the carbon fiber of high fiber content is formed, and its bending property is improved; Centre portion is two winding layers, can guarantee to be unlikely splitting and distortion when draw-winding rod is crooked, has improved the transverse strength of draw-winding rod; Skin adopts the anti-corrosion layer of high elongation at fracture, has improved the decay resistance of draw-winding rod.
The present invention has adopted integral type preforming frock, mould, preforming template center are accurately located, be as the criterion by mould, preforming mould Board position, regulate the core bar rotating disk, wind is set, and the position of traction draw-winding rod, make its strict conformance on level and vertical both direction, thereby guarantee that core bar from extracting out, carries out skin and twines, to going into mould and pull out mould all to be in constant position.
Adopt the product that draws the winding technologe preparation of the present invention, owing to have above-mentioned various super performance, so can be widely used in the manufacturing of fiber reinforced plastic pipe, booth pole and antenna equipment.
Description of drawings
Fig. 1 is a draw-winding rod cross sectional representation of the present invention
Fig. 2 is the crowded drawing process scheme drawing of carbon fiber core bar of the present invention
Fig. 3 is a draw-winding rod forming process scheme drawing of the present invention
The specific embodiment
Embodiment one:
As shown in Figure 1: the draw-winding rod that the present invention makes is made up of core bar 1, winding layer 2, preservative coat 3, and core bar 1 is a pole spar, by carbon fiber and mixed with resin pultrusion; Selecting tensile modulus for use is 290GPa, the carbon fiber of stretch ratio 1.5%; It is 80GPa that winding layer 2 is selected tensile modulus for use, and stretch ratio is 3% high-strength glass fibre; Preservative coat 3 is selected alkali-free glass fibre for use; The resin of selecting for use is the vinylite of glue shape, and its tensile modulus is 3.2, and stretch ratio is 6%.
Preparation core bar method comprises the steps:
The first step: mold design: the specification difference requires designing mould per sample
Diameter is the core bar of 8mm, and the core bar intracavity diameter is set at 4.94mm; Several 37 strands of the required carbon fiber of inner core, 24 strands of the required glass fibers dimensions of external coating.
Second step: draw the carbon fiber core bar
As shown in Figure 2: with carbon fiber 4, being immersed in the vinylite glue groove 5, by preformed board 6, entering and squeeze in the drawing-die tool 7, is the carbon fiber core bar by formed by extrusion and tension, and it is wound in dish.
The 3rd step: draw winding technologe
As shown in Figure 3: the mode of taking out is stretched out beyond will being wound in the carbon fiber 8 of dish, by two have the winding wheel 10 that twines yarn 11 draw around, twining wheel 10 links to each other with a motor by gear, motor twines by two of gear drivens takes turns the rotation of 10 different directions, twines yarn 11 and with twining wheel 10 rotations high-strength glass fibre is wrapped on the core bar with netted; Also be respectively equipped with and be placed with alkali-free glass fibre yarn frame 9 twining wheel 10 both sides, one of alkali-free glass fibre is stretched out, behind steeping vat 5 impregnations, pass the hole that template 12 is enclosed and presented by a certain percentage along center rectangular distribution one, radially covering on the high-strength glass fibre winding layer, pass through template 13 center holes again, core bar is wound in thigh, is draw-winding rod final products of the present invention by mould 14 formed by extrusion and tension at last.
Embodiment two:
As shown in Figure 1: the draw-winding rod that the present invention makes is made up of core bar 1, winding layer 2, preservative coat 3, and core bar 1 is a pole spar, by carbon fiber and mixed with resin pultrusion; Selecting tensile modulus for use is 290GPa, the carbon fiber of stretch ratio 1.5%; It is 80GPa that winding layer 2 is selected tensile modulus for use, and stretch ratio is 3% high-strength glass fibre; Preservative coat 3 is selected alkali-free glass fibre for use; The resin of selecting for use is the vinylite of glue shape, and its tensile modulus is 3.2, and stretch ratio is 6%.
Preparation core bar method comprises the steps:
The first step: mold design: the specification difference requires designing mould per sample
Diameter is that the inner chamber of 10mm inner core is set at 6.17mm; Several 61 strands of the required carbon fiber of inner core, 30 strands of the required glass fibers dimensions of external coating.
Second step: draw the carbon fiber core bar
As shown in Figure 2: with carbon fiber 4, being immersed in the vinylite glue groove 5, by preformed board 6, entering and squeeze in the drawing-die tool 7, is the carbon fiber core bar by formed by extrusion and tension, and it is wound in dish.
The 3rd step: draw winding technologe
With embodiment one.
Embodiment three:
Attainability energy index was as follows when the draw-winding rod length that adopts above-mentioned preparation method to prepare was 40 meters:
Diameter | Tensile modulus | Minimum drum diameter | Bow is high in 6 meters long scopes | Torsion resistance in 6 meters long scopes |
8mm | ?150GPa | ????900mm | ????1cm | ????0 |
10mm | ?150GPa | ????900mm | ????1cm | ????0 |