阅读说明：本技术 一种中空纤维增强塑料支撑杆及其制备方法 (Hollow fiber reinforced plastic support rod and preparation method thereof ) 是由 李向华 于 2019-08-30 设计创作，主要内容包括：本发明涉及一种中空纤维增强塑料支撑杆及其制备方法,涉及苗木支撑架技术领域,中空纤维增强塑料支撑杆包括：由内而外依次铺设的纤维毡层A、单向纱层和纤维毡层B；所述纤维毡层A为片材通过单向纤维多余的树脂胶浸润后,按一个方向包覆在模芯上形成的；所述单向纱层为纤维经过浸胶后,沿所述模芯方向单向包覆在所述纤维毡层A上形成的；所述纤维毡层B为纤维毡包覆在所述单向纱层上形成的。解决了市面上常见的树木类支撑杆存在牢固性差,入土部分易腐烂的问题,钢铁类支撑杆存在重量大,运输安装费用高的问题,由于这些材料耐腐蚀性能差,所以使用寿命短,综合成本高的技术问题,达到了使得中空纤维增强塑料支撑杆能够在更多样的使用场景中发挥其优良的性能,同时增加支撑杆使用寿命,减少更换次数,免除不必要的人工费用的有益效果,可广泛应用于植物栽培,具体包括各种农作物、林木、果树、花草、药用和观赏等植物的栽培。(The invention relates to a hollow fiber reinforced plastic support rod and a preparation method thereof, relating to the technical field of nursery stock support frames, wherein the hollow fiber reinforced plastic support rod comprises: the fiber felt layer A, the unidirectional yarn layer and the fiber felt layer B are sequentially paved from inside to outside; the fiber felt layer A is formed by coating a sheet material on a mold core in one direction after the sheet material is soaked by redundant resin adhesive of unidirectional fibers; the unidirectional yarn layer is formed by coating fibers on the fiber felt layer A in a unidirectional way along the direction of the mold core after the fibers are subjected to gum dipping; and the fiber felt layer B is formed by coating a fiber felt on the unidirectional yarn layer. The problem of common trees class bracing piece on the market have the fastness poor, the perishable problem of buried part, there is heavy in steel class bracing piece, the problem that transportation installation cost is high, because these materials corrosion resisting property is poor, so life is short, the high technical problem of comprehensive cost, reached and made hollow fiber reinforced plastic bracing piece can exert its good performance in more kinds of use scenes, increase bracing piece life simultaneously, reduce the change number of times, avoid the beneficial effect of unnecessary labour cost, but wide application in plant cultivation, specifically include various crops, woods, the fruit tree, flowers and plants, the cultivation of plants such as medicinal and sight and admire.)

1. A hollow fiber reinforced plastic support rod is characterized in that: comprises a fiber felt layer A (1), a unidirectional yarn layer (2) and a fiber felt layer B (3) which are sequentially paved from inside to outside;

the fiber felt layer A (1) is formed by coating a sheet material on a mold core in one direction after the sheet material is soaked by redundant resin adhesives with various colors of unidirectional fibers;

the unidirectional yarn layer (2) is formed by coating fibers on the fiber felt layer A (1) in a unidirectional way along the direction of the mold core after the fibers are impregnated;

the fiber felt layer B (3) is formed by coating the fiber felt on the unidirectional yarn layer (2).

2. The hollow fiber reinforced plastic support rod as set forth in claim 1, wherein: the fiber felt layer B (3) is composed of a continuous fiber felt.

3. The hollow fiber reinforced plastic support rod as set forth in claim 1, wherein: the fiber felt layer B (3) is formed by polyester fiber felt.

4. The hollow fiber reinforced plastic support rod as set forth in claim 1, wherein: one-way yarn layer (2) upper berth is equipped with winding layer (4), winding layer (4) are the cladding of fibre hoop winding one-way yarn layer (2) form.

5. The hollow fiber reinforced plastic support rod as set forth in claim 1, wherein: the hollow fiber reinforced plastic support rod is round, square or special-shaped.

6. A preparation method of a hollow fiber reinforced plastic support rod is characterized by comprising the following steps:

step S1, after the fibrofelt sheet is soaked by redundant resin glue on the unidirectional fiber, the fibrofelt sheet is coated on the mold core in one direction to form a fibrofelt layer A;

step S2, after gum dipping, the fiber is coated on the fiber felt layer A in a unidirectional way along the direction of the mold core to form a unidirectional yarn layer;

step S3, coating the fiber felt on the unidirectional yarn layer to form a fiber felt layer B;

step S4, after the fiber felt layer A, the unidirectional yarn layer and the fiber felt layer B are dipped, curing is carried out in a mould, so that the hollow fiber reinforced plastic support rod is molded;

step S5, pulling and moving the molded hollow fiber reinforced plastic support rod for demolding through pultrusion;

and step S6, cutting the pulled hollow fiber reinforced plastic support rod into a finished product according to the length required by actual design.

Technical Field

The invention relates to the technical field of nursery stock support frames, in particular to a hollow fiber reinforced plastic support rod and a preparation method thereof.

Background

The nursery stock support frame is that trees are after planting or transplanting process, and the root system has not stretched yet, and in order to prevent it from taking place to incline and fall under the exogenic action, in order to ensure its survival rate, often adopt the fixed bolster to fix it after planting. At present, the supporting rods are made of fir rods, pine rods, eucalyptus rods, bamboo rods, galvanized steel pipes, high polymer materials and rods, the upper portions of the rods are made of wood, the lower portions of the rods are made of steel, the firmness of the supporting rods of trees is poor, the soil-entering portions of the supporting rods are prone to rotting, the supporting rods of steel are heavy in weight and high in transportation and installation cost, and the materials are poor in corrosion resistance, so that the service life is short, and the comprehensive cost is high.

Disclosure of Invention

In view of the above, the invention provides a hollow fiber reinforced plastic support rod and a preparation method thereof, and aims to solve the technical problems that the common tree support rods in the market are poor in firmness, easy to rot in the soil part, heavy in weight, easy to corrode and high in transportation and installation cost.

The technical scheme adopted by the invention for solving the technical problems is as follows:

in a first aspect, an embodiment of the present invention provides a hollow fiber reinforced plastic support rod, including a fiber felt layer a, a unidirectional yarn layer, and a fiber felt layer B, which are sequentially laid from inside to outside;

the fiber felt layer A is formed by coating a sheet material on a mold core in one direction after the sheet material is soaked by redundant resin adhesives with various colors of unidirectional fibers;

the unidirectional yarn layer is formed by coating fibers on the fiber felt layer A in a unidirectional way along the direction of the mold core after the fibers are subjected to gum dipping;

and the fiber felt layer B is formed by coating a fiber felt on the unidirectional yarn layer.

In combination with the first aspect, embodiments of the present invention provide a first possible embodiment of the first aspect, wherein the fiber mat layer B is composed of a continuous fiber mat.

In combination with the first aspect, embodiments of the present invention provide a second possible embodiment of the first aspect, wherein the fiber mat layer B is made of a polyester fiber mat.

With reference to the first aspect, an embodiment of the present invention provides a third possible embodiment of the first aspect, where a winding layer is laid on the unidirectional yarn layer, and the winding layer is formed by winding and covering a fiber hoop around the unidirectional yarn layer.

In combination with the first aspect, embodiments of the present invention provide a fourth possible embodiment of the first aspect, wherein the hollow fiber reinforced plastic support rod is round, square or irregular.

In a second aspect, an embodiment of the present invention provides a method for manufacturing a hollow fiber reinforced plastic support rod, including the following steps:

step S1, after the fibrofelt sheet is soaked by redundant resin glue on the unidirectional fiber, coating the resin on the mold core according to one direction to form a fibrofelt layer A;

step S2, after gum dipping, the fiber is coated on the fiber felt layer A in a unidirectional way along the direction of the mold core to form a unidirectional yarn layer;

step S3, coating the fiber felt on the unidirectional yarn layer to form a fiber felt layer B;

step S4, after the fiber felt layer A, the unidirectional yarn layer and the fiber felt layer B are dipped, curing is carried out in a mould, so that the hollow fiber reinforced plastic support rod is molded;

step S5, pulling and moving the molded hollow fiber reinforced plastic support rod for demolding through pultrusion;

and step S6, cutting the pulled hollow fiber reinforced plastic support rod into a finished product according to the length required by actual design.

The invention has the advantages that the fiber reinforced plastic has the performance characteristics of light weight, high strength, non-conductivity, stable performance, high mechanical strength, corrosion resistance, repeated recycling and the like, the characteristics of light weight and high strength can facilitate high mountain operation, the characteristic of high mechanical strength can deal with stronger wind power, and the characteristic of corrosion resistance can deal with the acidity and alkalinity of different soils, so that the hollow fiber reinforced plastic support rod can exert excellent performance in more use scenes, meanwhile, the service life of the support rod is prolonged, the replacement frequency is reduced, unnecessary labor cost is avoided, and the hollow fiber reinforced plastic support rod can be widely applied to plant cultivation, particularly the cultivation of various crops, woods, fruit trees, flowers, medicinal plants, ornamental plants and the like.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and are some embodiments of the present invention, and it will be apparent to those skilled in the art that other drawings can be obtained without inventive effort, and therefore the scope of the present invention is not limited. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic cross-sectional view of a hollow fiber reinforced plastic support rod according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a hollow fiber reinforced plastic support rod with a wrapping layer according to an embodiment of the present invention.

In the figure, 1, a fiber felt layer A, 2, a unidirectional yarn layer, 3, a fiber felt layer B, 4 and a winding layer.

Detailed description of the preferred embodiments

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete description of the technical solutions of the present invention will be given below with reference to the accompanying drawings, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments, and all other embodiments obtained by those skilled in the art without any creative work may be obtained. All fall within the scope of protection of the present invention.

The nursery stock support frame is that trees are after planting or transplanting process, and the root system has not stretched yet, and in order to prevent it from taking place to incline and fall under the exogenic action, in order to ensure its survival rate, often adopt the fixed bolster to fix it after planting. At present, the support rod is mostly made of fir rods, pine rods, eucalyptus rods, bamboo rods, galvanized steel pipes, high-fat polymer materials, and the upper part of the rod body is made of wood, the lower part of the rod body is made of steel, the tree support rod has poor firmness and the buried part is easy to rot, and the steel support rod has the problems of heavy weight, easy corrosion and high transportation and installation cost. Meanwhile, the service life of the supporting rod is prolonged, the replacement times are reduced, unnecessary labor cost is avoided, and the method can be widely applied to plant cultivation, particularly cultivation of various crops, woods, fruit trees, flowers and plants, medicinal plants, ornamental plants and the like.

To facilitate understanding of the present embodiment, a hollow fiber reinforced plastic support rod and a method for manufacturing the same disclosed in the embodiments of the present invention are described in detail with reference to fig. 1-2, which includes a fiber felt layer a1, a unidirectional yarn layer 2 and a fiber felt layer B3 sequentially laid from inside to outside;

the fiber felt layer A1 is formed by coating a sheet material on a mold core in one direction after being soaked by redundant resin adhesive of unidirectional fibers;

in the embodiment of the invention, the unidirectional fiber composite felt layer A1 is used for priming, so that the distribution of annular fibers is realized, the cracking of the unidirectional yarn layer when bearing load is reduced, and the higher mechanical strength of the support rod is ensured.

The unidirectional yarn layer 2 is formed by coating fibers on the fiber felt layer A1 in a unidirectional manner along the direction of the mold core after the fibers are subjected to gum dipping;

in the embodiment of the invention, the unidirectional yarn layer 2 is laid on the fiber felt layer A1 along the length direction of the mold core, so that the stress and the load are longitudinally shared, the longitudinal strength of the hollow fiber reinforced plastic support rod is ensured, and the folding resistance is improved.

The fiber felt layer B3 is formed by coating fiber felt on the unidirectional yarn layer 2;

in the embodiment of the invention, the fiber felt layer B3 can greatly improve the circumferential strength of the support frame, and the support frame is arranged on the outermost layer, so that the content of resin adhesive is improved, and the corrosion resistance is ensured.

The fiber felt layer B3 is composed of continuous fiber felt;

in the embodiment of the present invention, more optional fiber materials are provided for the fiber mat layer B3, and when the fiber mat layer B3 is made of continuous fiber mat, it can meet the requirements of outdoor operation.

The fiber felt layer B3 is made of polyester fiber felt;

in the embodiment of the present invention, the fiber felt layer B3 is provided with more optional fiber materials, and when the fiber felt layer B3 is made of polyester fiber felt, the requirement of indoor application can be met.

A winding layer 4 is laid on the unidirectional yarn layer 2, and the winding layer 4 is formed by winding and coating fibers on the unidirectional yarn layer 2 in the circumferential direction;

in the embodiment of the invention, the winding layer 4 is formed by winding the fibers circumferentially, and because the continuous fibers are circumferentially distributed and are not overlapped, the stress concentration in use is reduced, the circumferential mechanical strength is increased, and the anti-bending performance is higher.

The hollow fiber reinforced plastic support rod is round, square or special-shaped;

in the embodiment of the invention, the shape structure of the support rod is explained, so that the shape structure of the hollow fiber reinforced plastic support rod is more diversified and has more choices.

In another embodiment of the present invention, there is also provided a method for manufacturing a hollow fiber reinforced plastic support rod, which may include the steps of:

step S1, after the fibrofelt sheet is soaked by redundant resin glue on the unidirectional fiber, the fibrofelt sheet is coated on the mold core in one direction to form a fibrofelt layer A;

step S2, after gum dipping, the fiber is coated on the fiber felt layer A in a unidirectional way along the direction of the mold core to form a unidirectional yarn layer;

step S3, coating the fiber felt on the unidirectional yarn layer to form a fiber felt layer B;

step S4, after the fiber felt layer A, the unidirectional yarn layer and the fiber felt layer B are dipped, curing is carried out in a mould, so that the hollow fiber reinforced plastic support rod is molded;

here, the fiber felt layer a, the unidirectional yarn layer and the fiber felt layer B are fixed at specific positions of a pultrusion device, and then cured in a mold, and finally the hollow fiber reinforced plastic support rod is molded.

Step S5, pulling and moving the molded hollow fiber reinforced plastic support rod for demolding through pultrusion;

and step S6, cutting the pulled hollow fiber reinforced plastic support rod into a finished product according to the length required by actual design.

Unless specifically stated otherwise, the relative steps, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.