High-strength drainage hose composite material and preparation method thereof

Abstract

The invention discloses a high-strength drainage hose composite material and a preparation method thereof, and the high-strength drainage hose composite material comprises the following raw materials by weight: 100 parts of PVC resin, 5-50 parts of a filler, 1.8-3 parts of stearic acid, 0.3-1 part of paraffin, 3-10 parts of CPE, 3.6-5.6 parts of titanium dioxide, 0.5-2.0 parts of a processing aid, 10-20 parts of a flexibilizer, 6-12 parts of a composite stabilizer, 8-12 parts of nano silica, and 4-9 parts of nano silicon carbide. The composite material comprises the following components in parts by weight: 5-10 parts of nano calcium carbonate, 6-12 parts of nano bamboo charcoal powder, 4 parts of a lubricant and 20-40 parts of high-strength fibers, and the high-strength fibers are formed by mixing glass fibers containing accommodating grooves and steel fibers according to a mass ratio of 2: 1. The mechanical shock resistance, wear resistance and corrosion resistance of the drainage hose are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of drainage pipes, and in particular relates to a high-strength drainage hose composite material and a preparation method thereof. Background Art

[0002] Drainage pipes refer to the system of pipes and ancillary facilities that collect and discharge sewage, wastewater, and rainwater. These include main pipes, branch pipes, and pipes leading to treatment plants. Drainage pipes primarily handle the drainage of rainwater, sewage, and farmland irrigation. Among various drainage applications, plastic pipes are the most widely used. The main plastic pipes used include polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP).

[0003] Chinese patent CN102702436B discloses a special material for buried plastic drainage pipes and its manufacturing method. The material is prepared from the following ingredients in parts by weight: 100 parts high-density polyethylene; 0.02-2 parts peroxide initiator; 0.5-5 parts silane; 0.01-0.2 parts cross-linking catalyst; 0.2-5 parts multifunctional monomer; 1-5 parts plasticizer; 0.05-0.5 parts antioxidant; and 0.1-0.5 parts lubricant. The material exhibits good processability, high modulus, excellent flexibility, and superior resistance to environmental stress cracking. It can mitigate the impact of localized stress or minor defects on pipeline system safety, making it suitable for use in areas with adverse engineering geological conditions.

[0004] Chinese patent CN108822411A discloses a high-strength composite material for drainage pipes and its preparation method. The composite material comprises 50-60 parts of copolymerized polypropylene, 25-30 parts of homopolymerized polypropylene, 14-20 parts of ethylene propylene diene monomer rubber, 8-12 parts of nano-silicon dioxide, 4-9 parts of nano-silicon carbide, 6-12 parts of nano-calcium carbonate, 6-12 parts of nano-zinc oxide, 5-10 parts of nano-bamboo charcoal powder, 0.4-0.8 parts of titanate coupling agent, and 1.8-3.6 parts of antibacterial agent, etc. The composite material is prepared by blending and co-melting several high molecular weight polymers, and then adding nano-fillers and processing aids. The synergistic effect achieves toughening and reinforcement effects, giving the material excellent rigidity, flexibility, and mechanical impact resistance, while also improving the material's crystallization temperature, melting point, heat deformation temperature, and mechanical properties.

[0005] Drainage pipes may be subjected to various physical stresses during installation and commissioning. For example, during construction, the pipes may need to withstand pressure from excavation equipment, other construction materials, and unexpected impacts during transportation. During use, they may face soil movement and the combined pressure of low pressure caused by ground traffic. Furthermore, thermal expansion and contraction due to temperature fluctuations, and water hammer caused by the sudden opening or closing of valves, can also affect drainage pipes. If the drainage pipe material does not have sufficient impact resistance, these factors may cause the pipe to rupture or deform, resulting in leaks or blockages, seriously affecting its water transport function. Therefore, it is necessary to develop a drainage pipe material with excellent impact resistance. Summary of the Invention

[0006] In response to the above technical problems, the present invention provides a high-strength drainage hose composite material and a preparation method thereof, which improves the drainage hose's resistance to mechanical impact, wear resistance, and corrosion resistance.

[0007] In order to achieve the above object, the present invention provides a high-strength drainage hose composite material, which includes the following raw materials, by weight: 100 parts of PVC resin, 5-50 parts of filler, 1.8-3 parts of stearic acid, 0.3-1 part of paraffin, 3-10 parts of CPE (chlorinated polyethylene), 3.6-5.6 parts of titanium dioxide, 0.5-2.0 parts of processing aid, 10-20 parts of toughening agent, 6-12 parts of composite stabilizer, 8-12 parts of nano-silicon dioxide, 4-9 parts of nano-silicon carbide, 5-10 parts of nano-calcium carbonate, 6-12 parts of nano-bamboo charcoal powder, 4 parts of lubricant and 20-40 parts of high-strength fiber.

[0008] Preferably, the diameters of nano-silicon dioxide, nano-silicon carbide, nano-calcium carbonate and nano-bamboo charcoal powder are all 1-100 nanometers.

[0009] Preferably, the composite stabilizer is composed of a composite lead salt stabilizer, a lead salt stabilizer and a calcium-zinc composite stabilizer in a weight ratio of (5-6):(3-4):(3-4).

[0010] Further preferably, the composite lead salt stabilizer is a mixture of lead salt and ester, the lead content is 28.5-32.5%, and the calcium-zinc composite stabilizer is a mixture of calcium salt, zinc salt, auxiliary stabilizer and lubricant in a weight ratio of 4:4:2:3.

[0011] More preferably, the calcium salt is a metal soap calcium salt, the zinc salt is a metal soap zinc salt, the auxiliary stabilizer is any one of epoxidized soybean oil, dibenzoylmethane, pentaerythritol and hydrotalcite; and the lubricant is any one of stearic acid, paraffin, polyethylene wax and hydrotalcite.

[0012] Furthermore, the metal soap calcium salt is any one of calcium stearate, calcium laurate and calcium octoate; the metal soap zinc salt is any one of zinc stearate, zinc laurate and zinc octoate.

[0013] More preferably, the lead salt stabilizer is any one of tribasic lead sulfate, dibasic lead phosphite, tribasic lead maleate, dibasic lead stearate, and dibasic lead phthalate.

[0014] Preferably, the viscosity of the processing aid is 4.0-10.

[0015] Further preferably, the processing aid is copolymerized by methyl methacrylate, butyl acrylate, butyl methacrylate, ethyl methacrylate, deionized water, emulsifier, initiator and regulator in a weight ratio of 4:2:4:3:6:2:1:1.

[0016] More preferably, the emulsifier is polyoxyl stearate; the initiator is benzoyl peroxide-N, wherein N is any one of N,N-dimethylaniline, N,N-diethylaniline and N,N-dimethyl-p-toluidine; and the regulator is any one of N-nitrosodiisopropylamine, N-nitroso-N-phenylhydroxylamine aluminum and N-nitrosodimethylamine.

[0017] Preferably, the high-strength fiber comprises a fiber body (2), and six receiving grooves (1) are provided in an annular array on the fiber body (2).

[0018] Further preferably, the outer edges of the receiving groove and the fiber body are rounded, and the outer edge of the fiber body between the two rounded edges consists of two edges with an angle of 165°.

[0019] More preferably, the radius of the receiving groove is R=8 μm; and the angle of the rounded corner treatment is 23°.

[0020] Further preferably, the high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of (1-2): (1-2).

[0021] More preferably, the glass fiber has a length of 3-25 mm and a diameter of 9-15 μm; the steel fiber has a length of 20-60 mm and a diameter of 0.1-0.6 mm.

[0022] Preferably, the filler is light calcium carbonate; the melt index of the toughening agent is 1-15 g / min, and the lubricant is stearyl alcohol.

[0023] More preferably, the toughening agent is ethylene propylene rubber.

[0024] Preferably, the PVC resin is a hard PVC resin with a hardness of 60-85 Shore D and a tensile strength of 40-55 MPa.

[0025] The present invention also provides a method for preparing a high-strength drainage hose composite material, comprising the following steps: (1) Preparation of processing aid: Methyl methacrylate, butyl acrylate, butyl methacrylate, ethyl methacrylate, deionized water, emulsifier, initiator and regulator are mixed, vacuum polymerized and dried to obtain the processing aid; (2) PVC, filler, stearic acid, paraffin, CPE, titanium dioxide, processing aid, toughening agent, composite stabilizer, nano silicon dioxide, nano silicon carbide, nano calcium carbonate, nano bamboo charcoal powder and lubricant are mixed to obtain a mixed material; (3) Mixing glass fiber and steel fiber to obtain high-strength fiber; (4) The mixed material is mixed with high-strength fiber, and the mixture is extruded and granulated to obtain a high-strength drainage hose composite material.

[0026] Preferably, the vacuum polymerization in step (1) is carried out at a temperature of 40-50° C. and for a time of 2-3 hours.

[0027] Preferably, the mixing method in step (2) is stirring and mixing at 50-100 r / min.

[0028] Preferably, the rotation speed during the extrusion granulation is 80-100 r / min, and the temperature of the extrusion head is 200°C.

[0029] The beneficial effects of the present invention are: 1. Using rigid PVC resin as the basic framework material of the pipe, supplemented by special processing aids such as ACR, can increase the fusion rate between the remaining materials in the ratio and the rigid PVC resin, as well as the tightness of the connection between the materials, improve the strength of the composite material, and reduce the risk of quality problems.

[0030] 2. Glass fiber and steel fiber are mixed as high-strength fibers and added to the drainage hose composite material. According to the characteristics of glass fiber and steel fiber themselves, such as strong heat resistance, good corrosion resistance, high mechanical strength, low water absorption and low price, the mechanical properties and later processing performance of the composite material can be further improved. At the same time, due to the high tensile strength and elastic coefficient of glass fiber, it can absorb greater impact energy, ensuring its integrity when impact occurs.

[0031] 3. The composite effect of adding nano-silicon dioxide, nano-silicon carbide, nano-calcium carbonate and nano-bamboo charcoal powder can not only improve the strength of the drainage pipe material, but also enhance the wear resistance and corrosion resistance of the material due to the large specific surface area of the nanoparticles. At the same time, bamboo charcoal powder can enhance the antibacterial properties of the material and prevent bacteria from growing on the surface of the water pipe material.

[0032] 4. Through the special design of the shape of glass fiber and steel fiber, the remaining materials can enter the inner cavity of the holding tank during the production of the pipeline, increasing the contact area between the materials and improving the stability of the connection between the materials; at the same time, after the rounded corners between the holding tank and the fiber body are processed, the resin and the like can be blocked when the material is bent, preventing the resin from separating from the fiber body, further improving the strength of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the cross section of the glass fiber or steel fiber of the present invention, wherein 1 is the receiving groove, 2 is the fillet, and 3 is the fiber body. DETAILED DESCRIPTION

[0034] The technical solutions of the present invention are further explained below with reference to the accompanying drawings and specific embodiments. It is worth noting that the following embodiments are only preferred embodiments of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the claims. Any modifications or substitutions made to the technical solutions of the present invention by those skilled in the art without creative effort shall fall within the scope of protection of the present invention.

[0035] In the following embodiments, the glass fibers and / or steel fibers used have the same shape and include a fiber body 3. Six receiving grooves 1 are provided in a circular array on the fiber body 3. The receiving grooves 1 are rounded on both sides of the outer edge of the fiber body 3 and between the outer edge of the fiber body 3; the outer edge of the fiber body 3 between two adjacent receiving grooves 1 consists of two edges with an angle of 165°; the angle of the rounded corner is 23°, and the radius of the receiving groove 1 is 0.8 μm.

[0036] Example 1 The steps for preparing the processing aid are as follows: (1) Methyl methacrylate, butyl acrylate, butyl methacrylate, ethyl methacrylate, deionized water, polyoxyethylene stearate, benzoyl peroxide-N,N-dimethylaniline and N-nitrosodiisopropylamine were placed in a polymerization kettle in a mass ratio of 4:2:4:3:6:2:1:1; (2) Adjusting the vacuum degree to 0.05 MPa, polymerizing at 45°C for 2.5 h to obtain an emulsion; (3) The emulsion was placed in a drying tower and spray-dried to obtain a powdered processing aid. The centrifugal atomization method was used, with an inlet air temperature of 150°C, an outlet air temperature of 75°C, a material flow rate of 1L / h, and a finished product D = 40μm.

[0037] Example 2 A high-strength drainage hose composite material, comprising, by weight, 100 parts of hard PVC resin (hardness 60 Shore D), 5 parts of light calcium carbonate, 1.8 parts of stearic acid, 0.3 parts of paraffin wax, 3 parts of CPE (chlorinated polyethylene), 3.6 parts of titanium dioxide, 0.5 parts of a processing aid (prepared in Example 1), 10 parts of ethylene propylene rubber (melt index 1 g / 10 min), 6 parts of a composite stabilizer, 8 parts of nano-silicon dioxide, 4 parts of nano-silicon carbide, 5 parts of nano-calcium carbonate, 6 parts of nano-bamboo charcoal powder, 4 parts of stearyl alcohol, and 20 parts of high-strength fiber. The composite stabilizer is composed of a composite lead salt stabilizer, a lead salt stabilizer and a calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; the high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The composite stabilizer is composed of a composite lead salt stabilizer, a lead salt stabilizer and a calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; the high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The composite lead salt stabilizer is prepared by mixing dibasic lead phosphite, calcium stearate and phosphite in a weight ratio of 1:1:1, with a lead content of 30%; The lead salt stabilizer is tribasic lead sulfate; The calcium-zinc composite stabilizer is prepared by mixing calcium stearate, zinc stearate and hydrotalcite in a weight ratio of 4:4:5.

[0038] The preparation method is as follows: (1) Add all the above raw materials into a stirring tank in sequence, and stir and mix at a speed of 100 r / min to obtain a mixed material; (2) The mixed material and high-strength fiber are uniformly poured into a single-screw extruder with a guide stirring structure hopper for granulation, cutting and water cooling to obtain high-strength drainage hose composite material particles; the speed of the single-screw extruder screw is 100 r / min, and the temperature of the extrusion head is 200 °C.

[0039] Example 3 A high-strength drainage hose composite material, comprising, by weight, 100 parts of hard PVC resin (hardness: 80 Shore D), 11 parts of light calcium carbonate, 2 parts of stearic acid, 0.4 parts of paraffin wax, 4 parts of CPE (chlorinated polyethylene), 3.8 parts of titanium dioxide, 0.8 parts of a processing aid (prepared in Example 1), 11 parts of ethylene propylene rubber (melt index: 10 g / 10 min), 7 parts of a composite stabilizer, 8 parts of nano-silicon dioxide, 4 parts of nano-silicon carbide, 5 parts of nano-calcium carbonate, 6 parts of nano-bamboo charcoal powder, 4 parts of stearyl alcohol, and 25 parts of high-strength fiber. The composite stabilizer is prepared by mixing composite lead salt stabilizer, lead salt stabilizer and calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; The calcium-zinc composite stabilizer is prepared by mixing calcium laurate, zinc laurate, epoxidized soybean oil and polyethylene wax in a mass ratio of 4:4:2:3; The lead salt stabilizer is dibasic lead phosphite; The high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The preparation method is the same as Example 2.

[0040] Example 4 A high-strength drainage hose composite material, comprising, by weight, 100 parts of hard PVC resin (hardness: 85 Shore D), 17 parts of light calcium carbonate, 2.1 parts of stearic acid, 0.5 parts of paraffin wax, 5 parts of CPE (chlorinated polyethylene), 4.1 parts of titanium dioxide, 1 part of a processing aid (prepared in Example 1), 13 parts of ethylene propylene rubber (melt index: 15 g / 10 min), 8 parts of a composite stabilizer, 8 parts of nano-silicon dioxide, 5 parts of nano-silicon carbide, 7 parts of nano-calcium carbonate, 8 parts of nano-bamboo charcoal powder, 4 parts of stearyl alcohol, and 28 parts of high-strength fiber. The composite stabilizer is prepared by mixing composite lead salt stabilizer, lead salt stabilizer and calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; The calcium zinc composite stabilizer is prepared by mixing calcium octanoate, zinc octanoate, dibenzoylmethane and stearic acid in a mass ratio of 4:4:2:3; The lead salt stabilizer is tribasic lead maleate; The high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The preparation method is the same as Example 2.

[0041] Example 5 A high-strength drainage hose composite material, comprising, by weight, 100 parts of hard PVC resin (hardness: 70 Shore D), 23 parts of light calcium carbonate, 2.2 parts of stearic acid, 0.6 parts of paraffin wax, 6 parts of CPE (chlorinated polyethylene), 4.6 parts of titanium dioxide, 1.3 parts of a processing aid (prepared in Example 1), 15 parts of ethylene propylene rubber (melt index: 5 g / 10 min), 9 parts of a composite stabilizer, 9 parts of nano-silicon dioxide, 6 parts of nano-silicon carbide, 8 parts of nano-calcium carbonate, 9 parts of nano-bamboo charcoal powder, 4 parts of stearyl alcohol, and 32 parts of high-strength fiber. The composite stabilizer is prepared by mixing composite lead salt stabilizer, lead salt stabilizer and calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; The lead salt stabilizer is dibasic lead phthalate; The high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The preparation method is the same as Example 2.

[0042] Example 6 A high-strength drainage hose composite material, comprising, by weight, 100 parts of hard PVC resin (hardness: 80 Shore D), 31 parts of light calcium carbonate, 2.4 parts of stearic acid, 0.7 parts of paraffin wax, 7 parts of CPE (chlorinated polyethylene), 4.8 parts of titanium dioxide, 1.5 parts of a processing aid (prepared in Example 1), 16 parts of ethylene propylene rubber (melt index: 10 g / 10 min), 10 parts of a composite stabilizer, 9 parts of nano-silicon dioxide, 6 parts of nano-silicon carbide, 9 parts of nano-calcium carbonate, 10 parts of nano-bamboo charcoal powder, 4 parts of stearyl alcohol, and 33 parts of high-strength fiber. The composite stabilizer is prepared by mixing composite lead salt stabilizer, lead salt stabilizer and calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; The lead salt stabilizer is dibasic lead stearate; The high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The preparation method is the same as Example 2.

[0043] Example 7 A high-strength drainage hose composite material, comprising, by weight, 100 parts of hard PVC resin (hardness: 80 Shore D), 38 parts of light calcium carbonate, 2.7 parts of stearic acid, 0.8 parts of paraffin wax, 8 parts of CPE (chlorinated polyethylene), 5.2 parts of titanium dioxide, 1.7 parts of a processing aid (prepared in Example 1), 18 parts of ethylene propylene rubber (melt index: 10 g / 10 min), 11 parts of a composite stabilizer, 10 parts of nano-silicon dioxide, 7 parts of nano-silicon carbide, 9 parts of nano-calcium carbonate, 11 parts of nano-bamboo charcoal powder, 4 parts of stearyl alcohol, and 36 parts of high-strength fiber. The composite stabilizer is composed of a composite lead salt stabilizer, a lead salt stabilizer and a calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; the high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The preparation method is the same as Example 2.

[0044] Example 8 A high-strength drainage hose composite material, comprising, by weight, 100 parts of hard PVC resin (hardness: 80 Shore D), 42 parts of light calcium carbonate, 2.8 parts of stearic acid, 0.9 parts of paraffin wax, 9 parts of CPE (chlorinated polyethylene), 5.4 parts of titanium dioxide, 1.9 parts of a processing aid (prepared in Example 1), 20 parts of ethylene propylene rubber (melt index: 10 g / 10 min), 12 parts of a composite stabilizer, 11 parts of nano-silicon dioxide, 8 parts of nano-silicon carbide, 10 parts of nano-calcium carbonate, 11 parts of nano-bamboo charcoal powder, 4 parts of stearyl alcohol, and 38 parts of high-strength fiber. The composite stabilizer is composed of a composite lead salt stabilizer, a lead salt stabilizer and a calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; the high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The preparation method is the same as Example 2.

[0045] Example 9 A high-strength drainage hose composite material, comprising, by weight, 100 parts of hard PVC resin (hardness: 80 Shore D), 50 parts of light calcium carbonate, 3 parts of stearic acid, 1 part of paraffin wax, 10 parts of CPE (chlorinated polyethylene), 5.6 parts of titanium dioxide, 2 parts of a processing aid (prepared in Example 1), 20 parts of ethylene propylene rubber (melt index: 10 g / 10 min), 12 parts of a composite stabilizer, 12 parts of nano-silicon dioxide, 9 parts of nano-silicon carbide, 10 parts of nano-calcium carbonate, 12 parts of nano-bamboo charcoal powder, 4 parts of stearyl alcohol, and 40 parts of high-strength fiber. The composite stabilizer is composed of a composite lead salt stabilizer, a lead salt stabilizer and a calcium zinc composite stabilizer in a mass ratio of 5.6:3.5:3.5; the high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of 2:1; The preparation method is the same as Example 2.

[0046] Comparative Example 1 A composite material for a drainage hose has the same formula as in Example 7 and the same preparation method as in Example 2, except that it does not contain high-strength fibers.

[0047] Comparative Example 2 A composite material for drainage hoses has the same formula as in Example 7 and the same preparation method as in Example 2, except that the composite material does not contain nano-silicon dioxide, nano-silicon carbide, nano-calcium carbonate, and nano-bamboo charcoal powder.

[0048] Comparative Example 3 A composite material for a drainage hose has the same formula as in Example 7 and the same preparation method as in Example 2, except that all high-strength fibers are replaced with glass fibers.

[0049] Comparative Example 4 A composite material for a drainage hose has the same formula as in Example 7 and the same preparation method as in Example 2, except that all high-strength fibers are replaced with steel fibers.

[0050] Comparative Example 5 A composite material for a drainage hose has the same formulation as in Example 7 and the same preparation method as in Example 2, except that the mass ratio of glass fiber to steel fiber in the high-strength fiber is changed to 1:1.

[0051] Comparative Example 6 A composite material for a drainage hose has the same formula as in Example 7 and the same preparation method as in Example 2, except that the high-strength fibers are replaced with ordinary cylindrical fibers.

[0052] Comparative Example 7 A composite material for a drainage hose has the same formula as in Example 7 and the same preparation method as in Example 2, except that the amount of high-strength fiber is changed to 42 parts.

[0053] Comparative Example 8 A composite material for a drainage hose has the same formula as in Example 7 and the same preparation method as in Example 2, except that the composite stabilizer is replaced by a composite lead salt stabilizer.

[0054] Comparative Example 9 A composite material for a drainage hose has the same formula as in Example 7 and the same preparation method as in Example 2, except that the composite stabilizer is changed to a mixture of a lead salt stabilizer and a calcium zinc composite stabilizer in a mass ratio of 1:1.

[0055] Comparative Example 10 A composite material for a drainage hose has the same formula as in Example 7 and the same preparation method as in Example 2, except that the composite stabilizer is changed to a composite lead salt stabilizer and a calcium zinc composite stabilizer mixed in a mass ratio of 5.6:3.5.

[0056] Comparative Example 11 A composite material for a drainage hose was prepared using the same formula as in Example 7 and the same preparation method as in Example 2, except that the processing aid ACR was replaced with ACR201 (viscosity 2.0±0.4 mL / g, purchased from Jiangyin Mengfan Rubber & Plastic Trading Co., Ltd.).

[0057] Results: The composite materials for drainage hoses prepared in the above examples and comparative examples were subjected to impact strength tests, tensile strength tests, and flexural strength tests according to GB / T5836.2-2006. The results are shown in Table 1. The drainage hose composite materials prepared in the above examples and comparative examples were tested for wear resistance according to QB / T 5101-2017 and for corrosion resistance according to GB / T 1846-2001. The results are shown in Table 1: Table 1 Properties of drainage hose composite materials

[0058] As shown in Table 1, the addition of high-strength fibers significantly improves the impact, tensile, and flexural strengths of the drainage hose composite, thereby enhancing its quality. When nano-silicon dioxide, nano-silicon carbide, nano-calcium carbonate, and nano-bamboo charcoal powder are removed from the raw materials, the composite's impact, tensile, and flexural strengths also decrease significantly, indicating that these four materials significantly impact the composite's production quality, thereby limiting its potential applications.

Claims

1. A high-strength drainage hose composite material, characterized by: The material comprises the following raw materials by weight: 100 parts of PVC resin, 5-50 parts of filler, 1.8-3 parts of stearic acid, 0.3-1 part of paraffin, 3-10 parts of CPE, 3.6-5.6 parts of titanium dioxide, 0.5-2.0 parts of processing aid, 10-20 parts of toughening agent, 6-12 parts of composite stabilizer, 8-12 parts of nano-silicon dioxide, 4-9 parts of nano-silicon carbide, 5-10 parts of nano-calcium carbonate, 6-12 parts of nano-bamboo charcoal powder, 4 parts of lubricant and 20-40 parts of high-strength fiber.

2. The high-strength drainage hose composite material according to claim 1, characterized in that: The composite stabilizer is composed of a composite lead salt stabilizer, a lead salt stabilizer and a calcium-zinc composite stabilizer in a weight ratio of (5-6):(3-4):(3-4).

3. The high-strength drainage hose composite material according to claim 2, characterized in that: The composite lead salt stabilizer is a mixture of lead salt and ester, with a lead content of 28.5-32.5%. The calcium-zinc composite stabilizer is a mixture of calcium salt, zinc salt, auxiliary stabilizer and lubricant, with a weight ratio of 4:4:2:

3.

4. The high-strength drainage hose composite material according to claim 1, characterized in that: The viscosity of the processing aid is 4.0-10.

5. The high-strength drainage hose composite material according to claim 4, characterized in that: The processing aid is prepared by copolymerizing methyl methacrylate, butyl acrylate, butyl methacrylate, ethyl methacrylate, deionized water, an emulsifier, an initiator and a regulator in a weight ratio of 4:2:4:3:6:2:1:

1.

6. The high-strength drainage hose composite material according to claim 5, characterized in that: The emulsifier is polyoxyl stearate; the initiator is benzoyl peroxide-N, wherein N is one of N,N-dimethylaniline, N,N-diethylaniline, and N,N-dimethyl-p-toluidine; and the regulator is any one of N-nitrosodiisopropylamine, N-nitrosophenylhydroxylamine aluminum, and N-nitrosodimethylamine.

7. The high-strength drainage hose composite material according to claim 1, characterized in that: The high-strength fiber comprises a fiber body (2), and six receiving grooves (1) are provided in a ring array on the fiber body (2).

8. The high-strength drainage hose composite material according to claim 7, characterized in that: The high-strength fiber is composed of glass fiber and steel fiber in a mass ratio of (1-2): (1-2).

9. The high-strength drainage hose composite material according to claim 1, characterized in that: The filler is light calcium carbonate; the melt index of the toughening agent is 1-15 g / min; and the lubricant is stearyl alcohol.

10. A method for preparing the high-strength drainage hose composite material according to any one of claims 1 to 9, characterized in that: The steps include: (1) Preparation of processing aid: Methyl methacrylate, butyl acrylate, butyl methacrylate, ethyl methacrylate, deionized water, emulsifier, initiator and regulator are mixed, vacuum polymerized and dried to obtain the processing aid; (2) PVC, filler, stearic acid, paraffin, CPE, titanium dioxide, processing aid, toughening agent, composite stabilizer, nano silicon dioxide, nano silicon carbide, nano calcium carbonate, nano bamboo charcoal powder and lubricant are mixed to obtain a mixed material; (3) Mixing glass fiber and steel fiber to obtain high-strength fiber; (4) The mixed material is mixed with high-strength fiber, and the mixture is extruded and granulated to obtain a high-strength drainage hose composite material.

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