阅读说明：本技术 一种玻璃纤维复合导流经编织品 (Glass fiber composite flow guide warp knitted product ) 是由 宣维栋 朱忠裕 张从勇 金湘玉 梁兵兵 于 2020-07-22 设计创作，主要内容包括：一种玻璃纤维复合导流经编织品,本发明涉及经编织品技术领域,它包含若干层高强度玻璃纤维层、聚酯缝编线和玻璃纤维短切原丝,若干层高强度玻璃纤维层依次叠设在玻璃纤维短切原丝上,且每层高强度玻璃纤维层均由若干个高强度玻璃纤维包芯纱制成,上下相邻层次之间的高强度玻璃纤维包芯纱以正交坐标分别呈±45°设置,若干个高强度玻璃纤维层以及玻璃纤维短切原丝之间利用聚酯缝编线连接；上述高强度玻璃纤维包芯纱由玻璃纤维无捻粗纱和包覆于该玻璃纤维无捻粗纱外部的聚酯短纤维制成。其有效提高制品的强度和刚性,增加其使用范围。(The invention relates to a glass fiber composite flow guide warp knitting product, which relates to the technical field of warp knitting products and comprises a plurality of high-strength glass fiber layers, polyester stitch-knitting threads and glass fiber chopped strands, wherein the plurality of high-strength glass fiber layers are sequentially stacked on the glass fiber chopped strands, each high-strength glass fiber layer is made of a plurality of high-strength glass fiber core-spun yarns, the high-strength glass fiber core-spun yarns between the upper layer and the lower layer are respectively arranged in an orthogonal coordinate manner at an angle of +/-45 degrees, and the plurality of high-strength glass fiber layers and the glass fiber chopped strands are connected by the polyester stitch-knitting threads; the high-strength glass fiber core-spun yarn is made of glass fiber roving and polyester short fiber coated outside the glass fiber roving. It can effectively raise strength and rigidity of product and can increase its application range.)

1. The glass fiber composite flow guide warp knitted product is characterized in that: the glass fiber fabric comprises a plurality of high-strength glass fiber layers, polyester stitch-knitting threads and glass fiber chopped strands, wherein the plurality of high-strength glass fiber layers are sequentially stacked on the glass fiber chopped strands, each high-strength glass fiber layer is made of a plurality of high-strength glass fiber covering yarns, the high-strength glass fiber covering yarns between the upper layer and the lower layer are respectively arranged in an orthogonal coordinate manner at an angle of +/-45 degrees, and the plurality of high-strength glass fiber layers and the glass fiber chopped strands are connected by the polyester stitch-knitting threads; the high-strength glass fiber core-spun yarn is made of glass fiber roving and polyester short fiber coated outside the glass fiber roving.

2. The glass fiber composite flow guide warp knitted fabric according to claim 1, wherein: the polyester stitch-bonding thread penetrates through the high-strength glass fiber layers and the glass fiber chopped strands in a zigzag manner.

3. The glass fiber composite flow guide warp knitted fabric according to claim 1, wherein: the processing technology comprises the following steps: the method comprises coating a layer of polyester staple fiber on the surface of glass fiber roving by air spinning to obtain high-strength glass fiber core-spun yarn, and processing the glass fiber core-spun yarn on a multi-axial warp knitting machine to obtain glass fiber chopped strand with a shape of + -45%⁰Axially weaving the high-strength glass fiber core-spun yarn in a way of penetrating one space, and finally sewing by using polyester stitch-bonding yarns to prepare the flow guide material.

Technical Field

The invention relates to the technical field of warp-knitted products, in particular to a glass fiber composite flow guide warp-knitted product.

Background

With the continuous improvement of the environmental protection requirement, the existing glass fiber reinforced plastic hand pasting process is more and more limited because the existing glass fiber reinforced plastic hand pasting process belongs to a die sinking forming process and the environmental protection problem is caused by the emission of a large amount of Volatile Organic Compounds (VOC).

With the development of science and technology, a closed mold molding process (RTM) is rapidly developed due to its environmental protection, and the principle thereof is a process technology of adopting low-viscosity resin to flow in a closed mold, infiltrating a reinforcing material and curing and molding, and belongs to the technical field of liquid molding or structural liquid molding of composite materials. The specific method is that reasonably designed, cut or mechanically preformed reinforcing material and flow guiding material are put into a designed mould in advance, the mould needs to be sealed and fastened at the periphery, and smooth resin flow is ensured; after the mould is closed, a certain amount of resin is injected, and after the resin is solidified, the desired product can be obtained by demoulding. This process has many advantages, and a wide variety of fiber reinforcement and resin systems can be used, resulting in excellent article surfaces. The method is suitable for manufacturing products with high quality and complex shapes, and has the advantages of high fiber content, less volatile components in the forming process, less environmental pollution, strong production automation adaptability, less investment and high production efficiency. Therefore, the RTM process is widely used in the automobile industry, aerospace, defense industry, machinery and equipment, and electronic products.

The core of realizing the process is the use of the diversion material, and the commonly used at present are as follows: vacuum bag film and flow-through net, or stitch-bonded fabric with flow-through sandwich felt. RTM molding is carried out by using the vacuum bag film and the flow guide net, and after the product is manufactured, the vacuum bag film and the flow guide net need to be removed from the surface of the product, so that the operation procedure is increased, and the surface needs to be additionally treated. RTM molding is carried out by using the stitch-bonded fabric with the flow-guiding sandwich felt, although a product post-treatment process is omitted, the flow-guiding sandwich felt is made of polypropylene fibers (PP), and the compatibility of other resins is poor, so that the strength and the rigidity of the product are reduced, and the use is limited to a certain extent.

Disclosure of Invention

The invention aims to provide a reasonably designed glass fiber composite flow guide warp knitting product aiming at the defects and shortcomings of the prior art, which effectively improves the strength and rigidity of the product and enlarges the application range of the product.

In order to achieve the purpose, the invention adopts the following technical scheme: the glass fiber fabric comprises a plurality of high-strength glass fiber layers, polyester stitch-knitting threads and glass fiber chopped strands, wherein the plurality of high-strength glass fiber layers are sequentially stacked on the glass fiber chopped strands, each high-strength glass fiber layer is made of a plurality of high-strength glass fiber covering yarns, the high-strength glass fiber covering yarns between the upper layer and the lower layer are respectively arranged in an orthogonal coordinate manner at an angle of +/-45 degrees, and the plurality of high-strength glass fiber layers and the glass fiber chopped strands are connected by the polyester stitch-knitting threads; the high-strength glass fiber core-spun yarn is made of glass fiber roving and polyester short fiber coated outside the glass fiber roving.

Furthermore, the polyester stitch-bonding thread penetrates through the high-strength glass fiber layers and the glass fiber chopped strands in a zigzag manner.

The processing technology of the invention is as follows: the method comprises coating a layer of polyester staple fiber on the surface of glass fiber roving by air spinning to obtain high-strength glass fiber core-spun yarn, and processing the glass fiber core-spun yarn on a multi-axial warp knitting machine to obtain glass fiber chopped strand with a shape of + -45%⁰Axially weaving the high-strength glass fiber core-spun yarn in a way of penetrating one space, and finally sewing by using polyester stitch-bonding yarns to prepare the flow guide material.

After adopting the structure, the invention has the beneficial effects that: the invention provides a glass fiber composite flow guide warp knitted product, which effectively improves the strength and rigidity of the product and increases the application range of the product.

Description of the drawings:

fig. 1 is a cross-sectional view of the structure of the present invention.

Fig. 2 is a sectional view of the high strength glass fiber core-spun yarn of the present invention.

Fig. 3 is a front view of the present invention.

Description of reference numerals:

the composite yarn comprises + 45-degree high-strength glass fiber covering yarns 1, -45-degree high-strength glass fiber covering yarns 2, glass fiber chopped strands 3, polyester stitch-knitted yarns 4, glass fiber roving 5 and polyester staple fibers 6.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to fig. 3, the following technical solutions are adopted in the present embodiment: the glass fiber composite material comprises a plurality of high-strength glass fiber layers, polyester stitch-knitted threads and glass fiber chopped strands, wherein the high-strength glass fiber layers are sequentially stacked on the glass fiber chopped strands, each high-strength glass fiber layer is made of a plurality of high-strength glass fiber covering yarns, the high-strength glass fiber covering yarns between the upper layer and the lower layer are arranged in an orthogonal coordinate manner at an angle of +/-45 degrees respectively, the high-strength glass fiber layers and the glass fiber chopped strands are connected through the polyester stitch-knitted threads, and the polyester stitch-knitted threads penetrate through the high-strength glass fiber layers and the glass fiber chopped strands in a zigzag manner; the high-strength glass fiber core-spun yarn is made of glass fiber roving and polyester short fiber coated outside the glass fiber roving.

The processing technology of the specific embodiment is as follows: the method comprises coating a layer of polyester staple fiber on the surface of glass fiber roving by air spinning to obtain high-strength glass fiber core-spun yarn, and processing the glass fiber core-spun yarn on a multi-axial warp knitting machine to obtain glass fiber chopped strand with a shape of + -45%⁰Axially weaving the high-strength glass fiber core-spun yarn in a way of penetrating one space, and finally sewing by using polyester stitch-bonding yarns to prepare the flow guide material.

After adopting above-mentioned structure, this embodiment's beneficial effect is: the specific embodiment provides a glass fiber composite flow guide warp knitted product, wherein glass fiber roving is adopted as main fiber, a special air spinning process is adopted, a layer of polyester short fiber is coated outside the glass fiber roving to manufacture high-strength glass fiber core-spun yarn, the process has the effects that the glass fiber roving is changed into a cylindrical shape from an original flat shape, and then the high-strength glass fiber core-spun yarn is manufactured into a flow guide material through a warp knitting process, so that the strength and the rigidity of the product are effectively improved, and the application range of the product is enlarged.