Fabric with high penetration rate, and preparation method and application of fabric
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A speed and fabric technology, applied in knitting, mechanical equipment, warp knitting, etc., can solve the problems of whitening of perfusion, long perfusion time of blade root, etc., and achieve the effect of increased perfusion speed, short perfusion time and high soaking rate
Active Publication Date: 2017-09-12
ZHEJIANG HENGSHI FIBER FOUND CO LTD
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Problems solved by technology
[0004] In order to solve the above problems of too long pouring time and whitening of the root of the blade in the prior art, the present invention provides a fabric with a high soaking rate, the fabric has a high soaking rate, the resin pouring speed is fast, and the root of the blade no whitening
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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Embodiment 1
[0043] A fabric with a high soak-through rate, such as figure 2 As shown, including +45° weft yarn 1, 90° weft yarn 2, -45° weft yarn 3 and 0° warp yarn 4, the +45° weft yarn, 90° weft yarn, and -45° weft yarn are bound together by 0° warp yarn, 0 ° The sewing stitch length 5 when the warp is bound is 2.6mm. Wherein, the arrangement angle of 90° weft yarn 2 is 88-92°, for example, 90° weft yarn 2 can follow 90°, 88°, 90°, 92°, 90°, 90°, 88°, 92°, and so on Arranged in the same way, there is a cross section between a part of the adjacent 90° weft yarn 2; the 90° weft yarn layer is sandwiched between the +45° weft yarn layer and the -45° weft yarn layer. It can be seen that the 90° weft yarn 2 of the present invention is only a name, and its laying angle is not limited to the 90° direction.
[0044] Such as figure 1 Shown, the preparation method of the fabric with high soaking rate in the present embodiment, comprises the following steps successively:
[0045] A. Laying +45...
Embodiment 21
[0059] A fabric with a high soaking rate, different from Example 1, in step D of its preparation method, when binding +45° weft yarn 1, 90° weft yarn 2 and -45° weft yarn 3 with 0° warp yarn 4 , control the tension of warp 4 at 0° to 19cN.
[0060] In this embodiment, the blade plant takes 3.9 hours to fill the shell, and at the same time, the root of the blade does not turn white.
Embodiment 22
[0062] A fabric with a high soaking rate, different from Example 1, in step D of its preparation method, when binding +45° weft yarn 1, 90° weft yarn 2 and -45° weft yarn 3 with 0° warp yarn 4 , control the tension of warp 4 at 0° to 15cN.
[0063] In this embodiment, the blade plant takes 3.8 hours to fill the shell, and at the same time, the root of the blade does not turn white.
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 provides fabric with a high penetration rate. The fabric comprises +45-degree weft yarns, 90-degree weft yarns, -45-degree weft yarns and 0-degree warp yarns, wherein the +45-degree weft yarns, the 90-degree weft yarns and the -45-degree weft yarns are bound together by means of the 0-degree warp yarns. The invention also provides a preparation method of the fabric with the high penetration rate. The method sequentially comprises the following steps: A. laying the +45-degree weft yarns; B. laying the 90-degree weft yarns; C. laying the -45-degree weft yarns; D. using the 0-degree warp yarns to bind the +45-degree weft yarns, the 90-degree weft yarns and the -45-degree weft yarns which are respectively laid in the step A, the step B and the step C, wherein the lengths of stitch-knitting stitches of the 0-degree warp yarns in the step A and the step C are 2.6-3.0mm. The invention also relates to application of the fabric in preparation of wind turbine blades. The fabric prepared by the method is high in porosity; resin filling channels are yarn clearances and holes of the bound yarns; when being filled with resin, the fabric is high in penetration rate, thus avoiding the problem that the roots of foliums become white; furthermore, the time for filling the roots of the foliums is short, and the filling speed is accelerated by 20% or above.
Description
technical field [0001] The invention belongs to the field of fabric preparation. Specifically, the invention designs a fabric with a high penetration rate and a preparation method thereof, and also relates to its application. Background technique [0002] Glass fiber fabric becomes fiber-reinforced plastic after being infused with resin, which is the main base material for wind turbine blades. As the blade shape of wind power blades becomes longer and longer, the root of the blade gradually thickens. Many blade factories spend as long as 5 hours, and some even reach 6 hours. At the same time, there may be phenomena such as root whitishness after perfusion, resulting in quality problems such as leaf defects. [0003] The Chinese utility model patent with the authorized notification number CN201428038Y discloses a triaxial warp knitted fabric, the first and second yarn layers are formed by the weft yarn arrangement of ±45°, the third yarn layer is formed by the warp yarn arra...
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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