A blind ditch of bamboo fiber material and its manufacturing method and application

Abstract

The application provides a bamboo fiber material blind ditch and a manufacturing method thereof, and the manufacturing method is as follows: bamboo fibers after being softened are orderly and / or disorderly wound according to certain rules, contact points of the wound bamboo fibers are bonded by using a bonding agent to form a bamboo wound three-dimensional space pipe body, and the space pipe body is subjected to a space three-dimensional solidification treatment to form the bamboo fiber material blind ditch. The bamboo fiber material blind ditch is used to replace a plastic blind ditch with high energy consumption and high pollution, and is applied to engineering construction, so as to realize development of a new product of 'bamboo instead of plastic' by using natural green bamboo fiber material, reduce pollution of the plastic blind ditch to the environment, achieve the purpose of carbon reduction, and have important social significance and economic value. The bamboo fiber material blind ditch provided by the application is a three-dimensional hollow structure, has good water permeability, has high compressive strength and rigidity, is low in cost, green and environment-friendly, fully meets the requirements of engineering construction, and has wide popularization and application prospects.

Description

Technical Field

[0001] This invention belongs to the technical field of drainage structures, specifically relating to a bamboo fiber material blind drain and its manufacturing method, as well as the application of the above-mentioned bamboo fiber material blind drain in engineering construction. Background Technology

[0002] Traditional plastic drain pipes are high-energy-consuming, high-polluting, and difficult-to-degrade materials. They consist of a plastic core wrapped with non-woven fabric. The plastic core is made primarily of thermoplastic synthetic resin, which is modified and extruded into plastic filaments through a nozzle in a molten state. These filaments are then fused together at their junctions using a molding device to form a three-dimensional drain structure. However, due to the escalating problem of plastic pollution, the development and production of safe, environmentally friendly, and biodegradable plastic alternatives has become an urgent issue for my country.

[0003] Due to my country's abundant bamboo resources, "replacing plastic with bamboo" has become a major new technology for alleviating plastic pollution. my country's bamboo industry has formed a relatively complete industrial system encompassing bamboo resource cultivation, bamboo processing and utilization, and bamboo product export trade, making it one of the most internationally competitive sunrise industries in my country's forestry sector. Research on the competitiveness of various bamboo products shows that bamboo products possess excellent characteristics such as environmental friendliness, beautiful texture, durability, low carbon footprint, and economy, and have broad market prospects. Bamboo fiber materials can replace traditional materials such as plastics, steel, and cement to a large extent, playing a vital role in national green and environmentally friendly development. Furthermore, the production and use of bamboo fiber materials can effectively reduce carbon emissions, which is extremely important for achieving carbon neutrality goals.

[0004] The utility model patent with announcement number CN 219549766U discloses a "construction positioning device for a bamboo-wound composite drainage pipe in a tunnel". This device utilizes bamboo-wound composite material to create the tunnel drainage pipe and successfully buries it underground using a positioning device. However, the drainage pipe produced by this patent is a closed pipe and lacks permeability.

[0005] Patent application CN 105526430B discloses "a straw-wound composite pipe and its preparation method." This composite pipe consists of an inner lining layer, a reinforcing layer, and an outer protective layer from the inside out. The inner lining layer is made of fabric and adhesive, and the reinforcing layer is made by winding multiple layers of straw stems onto the inner lining layer after parallel laying, pressing into sheets, sewing, and impregnation with adhesive. This straw-wound composite pipe is suitable for agricultural irrigation, drainage, and building ventilation. However, the aforementioned straw-wound composite pipe also has a closed structure and lacks permeable water-permeable properties.

[0006] Based on this, the present invention provides a bamboo fiber material blind drain with a hollow structure, good water permeability and high mechanical strength, and its manufacturing method, to replace plastic blind drains. Summary of the Invention

[0007] One of the objectives of this invention is to provide a method for manufacturing a bamboo fiber blind drain with good water permeability and high mechanical strength.

[0008] The second objective of this invention is to provide a bamboo fiber material blind drain with good water permeability and high mechanical strength.

[0009] The third objective of this invention is to provide a bamboo fiber material blind drain with good water permeability and high mechanical strength for application in engineering construction.

[0010] One of the technical solutions adopted to achieve the objective of this invention is: to provide a method for manufacturing blind drains made of bamboo fiber material, comprising the following steps:

[0011] S1. After raw bamboo is cut, split, and planed into bamboo strips, the bamboo strips are softened, planed, and cut to obtain bamboo fibers with a length of 200-500mm, a width of 2-4mm, and a thickness of 1-2mm.

[0012] S2. The bamboo fibers are wound together in an orderly and / or disordered manner according to certain rules, and the contact points of the winding are bonded together with an adhesive to form a bamboo wound three-dimensional hollow tubular body.

[0013] S3. The bamboo-wound three-dimensional hollow tubular body is subjected to three-dimensional curing treatment under certain conditions to obtain the cured bamboo-wound three-dimensional hollow tubular body, namely, bamboo fiber material blind drain.

[0014] This invention addresses the high energy consumption and pollution issues associated with current plastic blind drains used in engineering construction by providing a method for manufacturing blind drains using low-carbon, environmentally friendly, natural, and renewable green materials. This method uses bamboo as the main raw material, and involves processes such as softening, cutting, winding, bonding, curing, and surface protection to obtain bamboo fiber material blind drains. The bamboo fiber material blind drains prepared by this invention not only have excellent permeability but also high strength and rigidity, and good compressive strength.

[0015] Furthermore, in step S1, the softening agent used for softening is MJB-NS type bamboo fiber softening agent.

[0016] Further, in step S1, the softening method includes: placing the bamboo strip in an aqueous solution of a softening agent with a mass concentration of 1%-2%, and heating it at 90-110°C for 40-80 minutes. Preferably, the heating temperature is 100°C.

[0017] Further, in step S2, the adhesive is selected from one or more combinations of acrylic adhesive, epoxy resin adhesive, and polyurethane adhesive.

[0018] Furthermore, in step S2, the bamboo-wrapped three-dimensional hollow tubular body is a hollow tubular shape with a circular, square, or rectangular cross-section.

[0019] Furthermore, in step S2, the bamboo fiber is wound to form a bamboo-wound three-dimensional hollow tubular body with an average winding density of 7-8 permeable pores per cubic decimeter. Studies have found that under the aforementioned winding density, a balance between the permeability and mechanical properties of the blind drain can be achieved, ensuring smooth water flow while maintaining high compressive strength, thus better meeting the application needs of engineering construction.

[0020] Furthermore, the wall thickness of the bamboo-wrapped three-dimensional hollow tubular body is 5-10cm.

[0021] Further, in step S3, the temperature for the three-dimensional curing process is 25-70℃, and the time is 150-200 min. Preferably, the temperature for the three-dimensional curing process is 50-60℃.

[0022] Preferably, in the three-dimensional curing process, the bamboo-wrapped three-dimensional hollow tubular body is rotated at a uniform speed around its axis to ensure that the overall heating is uniform and the curing effect is consistent.

[0023] Preferably, the method further includes the following step: S4, applying a protective layer of tung oil to the inner and outer walls of the bamboo fiber blind drain. This protective layer imparts excellent waterproof, corrosion-resistant, and antioxidant properties to the bamboo-wrapped blind drain, extending its service life.

[0024] The second objective of this invention is to provide a bamboo fiber material blind drain, which is prepared by the manufacturing method described in the first objective of this invention.

[0025] The third technical solution adopted by the present invention is: the application of bamboo fiber material blind drains in engineering construction according to the second objective of the present invention.

[0026] The bamboo fiber material blind drain produced by this invention can be widely used in drainage-related engineering constructions such as tunnel underground drainage, roadbed underground drainage, underground building drainage and moisture-proofing, lawn drainage systems, garden drainage, and landfill underground drainage.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] (1) The present invention provides a method for manufacturing a bamboo fiber material blind drain. By using bamboo instead of plastic, it can make full use of a large amount of bamboo forest resources and actively respond to the domestic requirements for carbon reduction. Bamboo naturally has good elasticity and toughness. After the unique processing, softening and curing steps of the present invention, the mechanical properties of the bamboo-wound three-dimensional hollow tubular body can be further improved. The bamboo fiber material blind drain has good permeability and good compressive strength.

[0029] (2) The bamboo fiber material blind drain prepared by this invention has the characteristics of good water permeability and high compressive strength. At the same time, it also has the advantages of low production cost, green environmental protection, and carbon reduction. This invention can realize the development of new products that "replace plastic with bamboo", reduce the pollution of plastic blind drains to the environment, and achieve the purpose of carbon reduction. It has important social significance and economic value. Attached Figure Description

[0030] Figure 1 This is a front view of the circular bamboo fiber material blind drain provided in Embodiment 1 of the present invention;

[0031] Figure 2 This is a left view of the circular bamboo fiber material blind drain provided in Embodiment 1 of the present invention;

[0032] Figure 3 This is a cross-sectional view of the bamboo fiber material blind drain provided in Embodiment 1 of the present invention;

[0033] Figure 4 This is a left view of the square bamboo fiber material blind drain provided in Embodiment 2 of the present invention.

[0034] Figure 5 This is a left view of the rectangular bamboo fiber material blind drain provided in Embodiment 3 of the present invention.

[0035] Among them, 1-bamboo fiber; 2-inner wall of blind drain; 3-outer wall of blind drain. Detailed Implementation

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0038] This invention provides a blind drain made of bamboo fiber material, the manufacturing method of which includes the following steps:

[0039] Step 1: After the raw bamboo is cut, split, and planed into bamboo strips, the bamboo strips are softened, planed, and cut to obtain bamboo fibers with a length of 200-500mm, a width of 2-3mm, and a thickness of 2mm. The softening agent used is MJB-NS type bamboo fiber softener. The softening method is as follows: the softener is added to water to make an aqueous solution with a mass concentration of 1%-2%. The bamboo strips are placed in the aqueous solution of the softener and heated at 90-110℃ for 40-80 minutes to complete the softening operation.

[0040] Step 2: The bamboo fibers are wound together on a mold using a machine at a density of 7-8 permeable pores per cubic decimeter on average. The contact points of the winding are then bonded together with an adhesive to form a bamboo-wound three-dimensional hollow tubular body. The adhesive is one or a combination of acrylic glue, epoxy resin glue, and polyurethane glue.

[0041] Step 3: The bamboo-wound three-dimensional hollow tubular body is subjected to thermosetting treatment at a temperature of 25-70℃ for 150-200 minutes to improve its compressive strength. After demolding, the reinforced bamboo-wound three-dimensional hollow tubular body is obtained. During the thermosetting treatment, the bamboo-wound three-dimensional hollow tubular body is rotated uniformly around its axis to ensure uniform heating of the bamboo fiber material and consistent curing effect.

[0042] The present invention will be further described below with reference to specific embodiments, but these are not intended to limit the scope of the invention.

[0043] Example 1

[0044] This embodiment provides a bamboo fiber blind drain with a circular cross-section (outer diameter of 40cm and wall thickness of 8cm), and its manufacturing method includes the following steps:

[0045] Step 1: After the raw bamboo is cut, split, and planed into bamboo strips, the bamboo strips are softened, planed, and cut to obtain bamboo fibers with a length of 400mm, a width of 2.5mm, and a thickness of 2mm. The softening agent used is MJB-NS type bamboo fiber softener. The softening method is as follows: the softener is added to water to make a 1.5% (w / w) aqueous solution. The bamboo strips are placed in the aqueous solution of the softener and heated at 100℃ for 60 minutes to complete the softening operation.

[0046] Step 2: The bamboo fibers are wound together on a mold using a machine at a density of about 7 permeable pores per cubic decimeter. The contact points of the winding are then bonded together with an adhesive to form a three-dimensional hollow tubular bamboo winding body. The adhesive used is acrylic glue.

[0047] Step 3: The bamboo-wound three-dimensional hollow tubular body is subjected to thermosetting treatment at a temperature of 60℃ for 180 minutes to improve its compressive strength. After demolding, the reinforced bamboo-wound three-dimensional hollow tubular body is obtained. During the thermosetting treatment, the bamboo-wound three-dimensional hollow tubular body is rotated uniformly around its axis to ensure uniform heating of the bamboo fiber material and consistent curing effect.

[0048] Figure 1 This is a front view of the circular bamboo fiber material blind drain prepared in this embodiment. Figure 2 This is a left view of the circular bamboo fiber material blind drain. Figure 3 This is a cross-sectional view of the circular bamboo fiber material blind drain.

[0049] Combined with appendix Figure 1-3 As can be seen, the bamboo fiber blind drain prepared in Example 1 has an overall structure formed by winding bamboo fibers. Numerous pores exist between the bamboo fibers 1 throughout the blind drain to allow water flow. Simultaneously, a certain thickness exists between the inner wall 2 and the outer wall 3 of the blind drain, providing the structure with a certain compressive load-bearing capacity. A hollow tube with a certain diameter is formed in the middle of the blind drain, exhibiting good water permeability. Furthermore, the bamboo fibers bond together at their intersections, improving the overall strength of the blind drain. Moreover, the protective layer formed by applying tung oil to the inner wall 2 and outer wall 3 of the bamboo fiber blind drain imparts excellent waterproof, anti-corrosion, and anti-oxidation properties to the bamboo-wound blind drain, extending its service life.

[0050] Example 2

[0051] This embodiment provides a bamboo fiber material blind drain with a square cross-section (the side length of the square cross-section is 30cm and the wall thickness is 6cm), its left view is as follows. Figure 4 As shown, its manufacturing method includes the following steps:

[0052] Step 1: After the raw bamboo is cut, split, and planed into bamboo strips, the bamboo strips are softened, planed, and cut to obtain bamboo fibers with a length of 200mm, a width of 2mm, and a thickness of 2mm. The softening agent used is MJB-NS type bamboo fiber softener. The softening method is as follows: the softener is added to water to make a 1% (w / w) aqueous solution. The bamboo strips are placed in the aqueous solution of the softener and heated at 100℃ for 50 minutes to complete the softening operation.

[0053] Step 2: The bamboo fibers are wound together on a mold using a machine at a density of about 8 permeable pores per cubic decimeter. The contact points of the winding are then bonded together with an adhesive to form a bamboo-wound three-dimensional hollow tubular body. The adhesive is epoxy resin.

[0054] Step 3: The bamboo-wound three-dimensional hollow tubular body is subjected to thermosetting treatment at a temperature of 40℃ for 150 minutes to improve its compressive strength. After demolding, the reinforced bamboo-wound three-dimensional hollow tubular body is obtained. During the thermosetting treatment, the bamboo-wound three-dimensional hollow tubular body is rotated uniformly around its axis to ensure uniform heating of the bamboo fiber material and consistent curing effect.

[0055] Example 3

[0056] This embodiment provides a bamboo fiber material blind drain with a rectangular cross-section (the rectangular cross-section is 35cm long, 25cm wide, and 5cm thick), as shown in the left view below. Figure 5 As shown, its manufacturing method includes the following steps:

[0057] Step 1: After the raw bamboo is cut, split, and planed into bamboo strips, the bamboo strips are softened, planed, and cut to obtain bamboo fibers with a length of 400mm, a width of 3mm, and a thickness of 2mm. The softening agent used is MJB-NS type bamboo fiber softener. The softening method is as follows: the softener is added to water to make a 2% (w / w) aqueous solution. The bamboo strips are placed in the aqueous solution of the softener and heated at 100℃ for 80 minutes to complete the softening operation.

[0058] Step 2: The bamboo fibers are wound together on a mold using a machine at a density of about 7 permeable pores per cubic decimeter. The contact points of the winding are then bonded together with an adhesive to form a bamboo-wound three-dimensional hollow tubular body. The adhesive is polyurethane glue.

[0059] Step 3: The bamboo-wound three-dimensional hollow tubular body is subjected to thermosetting treatment at a temperature of 70℃ for 200 minutes to improve its compressive strength. After demolding, the reinforced bamboo-wound three-dimensional hollow tubular body is obtained. During the thermosetting treatment, the bamboo-wound three-dimensional hollow tubular body is rotated uniformly around its axis to ensure uniform heating of the bamboo fiber material and consistent curing effect.

[0060] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the content of this specification should be included within the protection scope of the present invention.

Claims

1. A method for manufacturing a blind drain made of bamboo fiber material, characterized in that, Includes the following steps: S1. After raw bamboo is cut, split, and planed into bamboo strips, the bamboo strips are softened, planed, and cut to obtain bamboo fibers with a length of 200-500mm, a width of 2-4mm, and a thickness of 1-2mm. The softening agent used is a bamboo fiber softening agent; the softening method includes: placing the bamboo strips in an aqueous solution of softening agent with a mass concentration of 1%-2% and heating at 90-110℃ for 40-80 minutes; S2. The bamboo fibers are wound together in an orderly and / or disordered manner according to certain rules, and the contact points of the winding are bonded together with an adhesive to form a bamboo-wound three-dimensional hollow tubular body; the bamboo fibers are wound with an average of 7-8 water-permeable pores per cubic decimeter to form the bamboo-wound three-dimensional hollow tubular body. S3. The bamboo-wound three-dimensional hollow tubular body is subjected to three-dimensional curing treatment. The temperature of the three-dimensional curing treatment is 25-70℃ and the time is 150-200min, to obtain the cured bamboo-wound three-dimensional hollow tubular body, namely the bamboo fiber material blind drain.

2. The manufacturing method according to claim 1, characterized in that, In step S2, the adhesive is selected from one or more combinations of acrylic adhesive, epoxy resin adhesive, and polyurethane adhesive.

3. The manufacturing method according to claim 1, characterized in that, In step S2, the bamboo-wrapped three-dimensional hollow tubular body is a hollow tubular shape with a circular, square, or rectangular cross-section.

4. The manufacturing method according to claim 1, characterized in that, In step S2, the wall thickness of the bamboo-wrapped three-dimensional hollow tubular body is 5-10cm.

5. A blind drain made of bamboo fiber material, characterized in that, It is prepared by the manufacturing method according to any one of claims 1-4.

6. The application of a bamboo fiber material blind drain according to claim 5 in engineering construction.

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