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CN-122011554-A - Wear-resistant PE composite material, water supply pipe and preparation method of water supply pipe

CN122011554ACN 122011554 ACN122011554 ACN 122011554ACN-122011554-A

Abstract

The invention discloses a wear-resistant PE composite material, a water supply pipe and a preparation method thereof, which belong to the technical field of PE composite materials, flower-shaped alumina is obtained through hydrothermal reaction and calcination, tannic acid is utilized to form a porous coating on the surface of the flower-shaped alumina, cerium ions are loaded and calcined to obtain cerium dioxide loaded flower-shaped alumina, mesoporous silica is taken as a template, hollow and zirconium zinc doped hollow mesoporous silica spheres are obtained through ammonia water etching, then polyethylene PE100, cerium dioxide loaded flower-shaped alumina, zirconium zinc doped hollow mesoporous silica spheres, an antioxidant 1010 and polyethylene wax are mixed, melted, extruded and granulated to obtain the wear-resistant PE composite material, the wear-resistant PE water supply pipe is manufactured through melting, plasticizing and extruding of a single screw extruder and vacuum sizing and cooling traction, and the wear resistance, toughness, ageing resistance and antibacterial effect of the water supply pipe are further improved.

Inventors

  • Yi Shucheng
  • WANG ZHIYUE

Assignees

  • 安徽万大管业科技有限公司

Dates

Publication Date
20260512
Application Date
20260306

Claims (10)

  1. 1. The wear-resistant PE composite material is characterized by comprising the following components in parts by mass: Polyethylene PE100 800-1000 parts, titanate coupling agent 10-15 parts, ceria supported flower-like alumina 50-100 parts, zirconium zinc doped hollow mesoporous silica sphere 10-25 parts, antioxidant 1010 5-15 parts and polyethylene wax 10-30 parts; the ceria supported flower-like alumina is prepared by the steps of: Adding flower-like alumina and absolute ethyl alcohol into deionized water, stirring for 30-40min, adding 2.55wt% of tannic acid solution, stirring uniformly, adding 25wt% of ammonia water and 3.7wt% of formaldehyde solution, stirring for 12-14h at 60 ℃, slowly dropwise adding 0.118wt% of cerium nitrate hexahydrate solution, stirring for 12-14h continuously, transferring to a polytetrafluoroethylene lining reaction kettle, performing hydrothermal reaction at 100-120 ℃ for 24-26h, centrifugally collecting precipitate, washing, freeze-drying, placing in a muffle furnace, heating to 500-600 ℃ and calcining for 2-4h to obtain the cerium dioxide-loaded flower-like alumina.
  2. 2. The abrasion resistant PE composite according to claim 1, wherein the ratio of the amounts of flower-like alumina, absolute ethanol, deionized water, 2.55wt% tannic acid solution, 25wt% aqueous ammonia, 3.7wt% formaldehyde solution and 0.118wt% cerium nitrate hexahydrate solution is 18-22g:150-180ml:650-850ml:140-160ml:5-8ml:50-80ml:18.75-22.4mL.
  3. 3. The wear-resistant PE composite material according to claim 2, characterized in that the specific preparation steps of the flower-like alumina are as follows: Adding potassium sulfate, urea, aluminum nitrate nonahydrate and deionized water into a reaction kettle, stirring until the solid is completely dissolved, reacting for 3-5 hours at 180-200 ℃, cooling to room temperature, centrifugally washing for 10-20 minutes, collecting precipitate, drying, transferring into a muffle furnace, heating to 1100-1200 ℃ and calcining for 3-5 hours to obtain flower-shaped aluminum oxide.
  4. 4. A wear resistant PE composite according to claim 3, characterized in that the dosage ratio of potassium sulphate, urea, aluminium nitrate nonahydrate and deionized water is 224-256g:38.4-42.2g:240-260g:12.8-14.2L.
  5. 5. The wear-resistant PE composite material according to claim 1, wherein the zirconium-zinc doped hollow mesoporous silica spheres are prepared by the following steps: Dissolving zirconium nitrate pentahydrate and zinc nitrate hexahydrate in deionized water to obtain a mixed solution, adding mesoporous silica nanospheres into the deionized water, stirring for 30-40min, slowly dropwise adding the mixed solution, magnetically stirring for 30-40min, then dropwise adding 25wt% ammonia water, transferring into a reaction kettle, reacting for 24-26h at 160-180 ℃, cooling to room temperature, centrifuging for 10-20min, collecting precipitate, washing, and vacuum drying to constant weight to obtain the zirconium-zinc doped hollow mesoporous silica nanospheres.
  6. 6. The wear resistant PE composite of claim 5, characterized in that the dosage ratio of zirconium nitrate pentahydrate, zinc nitrate hexahydrate and deionized water is 21.5-24g:14.85-16.2g:2000-2500mL; The dosage ratio of the mesoporous silica nanospheres, deionized water, the mixed solution and 25wt% of ammonia water is 6.5-8.2g:2000-2500mL:2000-2500mL:600-800mL.
  7. 7. The wear-resistant PE composite according to claim 1, characterized in that it is prepared by the steps of: adding polyethylene PE100, a titanate coupling agent, ceria-supported flower-shaped alumina, zirconium-zinc-doped hollow mesoporous silica spheres, an antioxidant 1010 and polyethylene wax into a high-speed premixing machine, mixing for 8-10min at 500-800rpm, transferring into a double-screw extruder, carrying out melt extrusion and granulation, and drying for 2-4h at 60-80 ℃ to obtain an abrasion-resistant PE composite material; The temperature of the twin-screw extruder is set to be one zone 165-175 ℃, two zone 185-195 ℃, three zone 205-215 ℃, four zone 205-210 ℃, and head 200-210 ℃.
  8. 8. The preparation method of the water supply pipe is characterized by comprising the following steps: adding the wear-resistant PE composite material according to any one of claims 1-7 into a single screw extruder, melting, plasticizing, extruding, transferring to a vacuum sizing box, adsorbing to a sizing sleeve at-0.06 to-0.09 MPa, placing the pipe into a spray cooling water tank, gradually cooling at 15-25 ℃, drawing the cooled pipe at a constant speed by a drawing machine, and cutting the pipe by a planetary cutting machine according to a set length to obtain the wear-resistant PE water supply pipe.
  9. 9. The method for producing a water pipe according to claim 8, wherein the temperature of the single screw extruder is set to 180-190 ℃ in one zone, 190-200 ℃ in two zones, 200-210 ℃ in three zones, and 210-220 ℃ in a head.
  10. 10. A water supply pipe, characterized in that it is produced by the method for producing a water supply pipe according to any one of claims 8 to 9.

Description

Wear-resistant PE composite material, water supply pipe and preparation method of water supply pipe Technical Field The invention belongs to the technical field of PE composite materials, and particularly relates to a wear-resistant PE composite material, a water supply pipe and a preparation method of the wear-resistant PE composite material. Background With the continuous promotion of urban construction, the upgrading and reconstruction of municipal water supply networks and the comprehensive spreading of rural drinking water safety engineering, polyethylene (PE) water supply pipes are widely used for replacing traditional pipes such as cast iron pipes, galvanized steel pipes and the like by virtue of the advantages of corrosion resistance, good flexibility, convenience in construction and the like, and become main flow pipeline materials in the fields of urban and rural water supply, water conservancy water delivery, sponge city construction and the like. In long-term engineering application, the common PE water supply pipe gradually exposes an obvious short plate, and under complex working conditions of sand-containing raw water conveying, mountain non-excavation laying, high-flow-rate water conveying and the like, the pipe wall is easily washed by silt, sand and stone friction and external force scraping, so that the problems of inner wall abrasion thinning, local stress concentration, pressure resistance reduction and the like are caused, and the service life and operation safety of the pipe are seriously influenced. Meanwhile, with the improvement of public health consciousness, the safety of the drinking water quality of a water supply pipe network is increasingly concerned. PE material itself does not possess antibacterial property, especially in high-rise building secondary water supply etc. detention risk higher scene, the pipe wall is liable to breed the bacterium, forms the biomembrane, causes quality of water secondary pollution. Therefore, the development of a novel PE water supply pipe with excellent wear resistance and high-efficiency antibacterial function has become an important direction for industrial technology upgrading. The Chinese patent application with publication number of CN117105256A discloses cerium oxide-based nano powder, and the prepared cerium oxide nano powder has small particle size and large specific surface area, has better antibacterial property and can improve the antibacterial property of plastic products. Besides nano cerium dioxide, nano silver, nano zinc oxide, quaternary ammonium salt modified graphene and other nano materials have good antibacterial effects, but the nano materials are easy to agglomerate in plastic materials, so that the antibacterial effects and mechanical properties of PE water supply pipes and other products are affected. Disclosure of Invention The invention aims to provide a wear-resistant PE composite material, a water supply pipe and a preparation method thereof, wherein tannic acid-formaldehyde is polymerized on the surface of flower-shaped alumina to form a porous coating, cerium oxide nano particles are uniformly loaded on the surface of the flower-shaped alumina by utilizing the efficient coordination capturing capability of phenolic hydroxyl groups of the coating on cerium ions, so that the agglomeration of the cerium oxide nano particles is effectively avoided, and meanwhile, the antibacterial and wear-resistant effects of the PE water supply pipe are jointly improved by cooperating with zirconium-zinc doped hollow mesoporous silica spheres. The aim of the invention can be achieved by the following technical scheme: the wear-resistant PE composite material comprises the following components in parts by mass: Polyethylene PE100 800-1000 parts, titanate coupling agent 10-15 parts, ceria supported flower-shaped alumina 50-100 parts, zirconium zinc doped hollow mesoporous silica sphere 10-25 parts, antioxidant 1010 5-15 parts and polyethylene wax 10-30 parts. Further, the specific preparation method of the ceria supported flower-like alumina comprises the following steps: Adding flower-like alumina and absolute ethyl alcohol into deionized water, stirring for 30-40min, adding 2.55wt% of tannic acid solution, stirring uniformly, adding 25wt% of ammonia water and 3.7wt% of formaldehyde solution, stirring for 12-14h at 60 ℃, slowly dropwise adding 0.118wt% of cerium nitrate hexahydrate solution, stirring for 12-14h continuously, transferring to a polytetrafluoroethylene lining reaction kettle, performing hydrothermal reaction at 100-120 ℃ for 24-26h, centrifugally collecting precipitate, washing, freeze-drying, placing in a muffle furnace, heating to 500-600 ℃ and calcining for 2-4h to obtain the cerium dioxide-loaded flower-like alumina. Further, the dosage ratio of the flower-shaped alumina, the absolute ethyl alcohol, the deionized water, the tannic acid solution with the weight percent of 2.55, the ammonia water with the weight percen