CN116120664B - Temperature-resistant PPR water supply pipe and preparation method and application thereof - Google Patents

Temperature-resistant PPR water supply pipe and preparation method and application thereof Download PDF

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CN116120664B
CN116120664B CN202211729925.0A CN202211729925A CN116120664B CN 116120664 B CN116120664 B CN 116120664B CN 202211729925 A CN202211729925 A CN 202211729925A CN 116120664 B CN116120664 B CN 116120664B
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parts
temperature
heat treatment
water supply
supply pipe
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CN116120664A (en
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代营伟
李锦松
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HENAN LIANSU INDUSTRIAL CO LTD
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HENAN LIANSU INDUSTRIAL CO LTD
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C08K2003/322—Ammonium phosphate
    • C08K2003/323—Ammonium polyphosphate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention discloses a temperature-resistant PPR water supply pipe, and belongs to the technical field of high-performance plastic and resin manufacture. The invention relates to a temperature-resistant PPR water supply pipe, which comprises the following components in parts by weight: 100 parts of polypropylene, 15-29 parts of quantum dot titanium dioxide, 18-31 parts of porous calcium sulfate, 25-36 parts of carbon fiber modified polypropylene, 13-20 parts of nano calcium carbonate and 15-32 parts of other auxiliary agents. The temperature-resistant PPR water supply pipe comprises the components of the quantum dot titanium dioxide, the porous calcium sulfate and the carbon fiber modified polypropylene, wherein the quantum dot titanium dioxide has high dispersibility, the carbon fiber in the carbon fiber modified polypropylene has good dispersibility and compatibility in the polypropylene, the reinforcing effect of the carbon fiber on the polypropylene is further improved, and the porous calcium sulfate has an excellent pore structure, so that the static pressure resistance and the heat resistance of the temperature-resistant PPR water supply pipe can be effectively improved due to the synergistic effect of the components.

Description

Temperature-resistant PPR water supply pipe and preparation method and application thereof
Technical Field
The invention relates to the technical field of high-performance plastic and resin manufacturing, in particular to a temperature-resistant PPR water supply pipe and a preparation method and application thereof.
Background
Along with the rapid development of economy and the continuous improvement of living standard of people, the requirements of people on the static pressure resistance and the heat resistance of PPR water supply pipes are continuously improved, and the PPR water supply pipes are required to have higher static pressure resistance and high temperature resistance in particular to the industry. Therefore, the PPR water supply pipe production needs to be deeply researched for different novel materials and production processes to jointly solve the problem of the performance short plate of the existing PPR water supply pipe in the aspects of static pressure resistance and heat resistance.
The prior art discloses a high and low temperature resistant PPR pipe with an aluminum metal effect, which comprises the following components in parts by weight: 100 parts of PPR, 10-25 parts of aluminum powder, 8-18 parts of dispersing agent, 3-8 parts of soft-core and hard-shell type core-shell copolymer, 5-10 parts of styrene-butadiene rubber, 5-10 parts of carbon fiber, 3-8 parts of needle-like wollastonite fiber, 1-3 parts of coupling agent and 1.5-3 parts of antioxidant.
Disclosure of Invention
The invention aims to overcome the defect and the defect that the existing PPR pipe does not have good temperature and static pressure resistance, and provides a temperature-resistant PPR water supply pipe, and the temperature and static pressure resistance of the PPR pipe is effectively improved through the synergistic effect of the components.
The above object of the present invention is achieved by the following technical scheme:
the temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 15-29 parts of quantum dot titanium dioxide, 18-31 parts of porous calcium sulfate, 25-36 parts of carbon fiber modified polypropylene, 13-20 parts of nano calcium carbonate and 15-32 parts of other auxiliary agents.
The following description is needed:
the carbon fiber modified polypropylene can achieve the effect of reinforcing polypropylene by modifying the polypropylene by the carbon fiber, and can also improve the static pressure resistance and the heat resistance of the temperature-resistant PPR water supply pipe.
The quantum dot titanium dioxide disclosed by the invention has high dispersibility, and can obviously improve the static pressure resistance of the temperature-resistant PPR water supply pipe.
The porous calcium sulfate provided by the invention has an excellent pore structure, so that the static pressure resistance and the heat resistance of the temperature-resistant PPR water supply pipe can be improved.
In the specific embodiment, in order to realize better temperature and static pressure resistance, the alloy comprises the following components in parts by weight:
100 parts of polypropylene, 18.5 parts of quantum dot titanium dioxide, 21 parts of porous calcium sulfate, 28.6 parts of carbon fiber modified polypropylene, 15.3 parts of nano calcium carbonate and 23 parts of other auxiliary agents.
In a specific embodiment, the other auxiliary agents comprise, by weight, 3-7 parts of calcium stearate, 3-9 parts of zinc stearate and 9-16 parts of ammonium polyphosphate.
In a specific embodiment, the invention further specifically provides a preparation method of the quantum dot titanium dioxide, which specifically comprises the following steps:
s1, mixing ethanol, ethyl acetate, ethyl cellulose and cellulose acetate, fully reacting at 65-75 ℃, cooling to 45 ℃, adding tetrabutyl titanate, continuously reacting under the reaction conditions, adding a citric acid aqueous solution, and continuously reacting under the reaction conditions for 3-8 hours to obtain a product;
s2, vacuum drying and crushing the product, carrying out heat treatment at 100 ℃ for 1h,200 ℃ for 2h,300 ℃ for 2h,400 ℃ for 1h,500 ℃ for 3h and 550 ℃ for 3h, crushing, purifying and drying to obtain the quantum dot titanium dioxide,
wherein the mass portion ratio of tetrabutyl titanate, ethanol, ethyl acetate, ethyl cellulose, cellulose acetate, water and citric acid is 35:160-210:93-135:9-20:10-22:9-18:8-17.
The following description is needed:
the vacuum drying treatment in the S2 of the invention is that the vacuum drying treatment is carried out for 5h at 60 ℃ under the pressure of minus 0.1MPa, and the purification in the S2 is that 3 times of washing with 3 percent aqueous acetic acid solution, 3 times of washing with water and 3 times of washing with ethanol.
In the preparation method of the quantum dot titanium dioxide, the purpose of the ethyl cellulose and the cellulose acetate is to improve the dispersion uniformity of the titanium dioxide precursor. The ethyl cellulose and the cellulose acetate have excellent thickening property, the viscosity of a system can be obviously improved, the dispersion uniformity of materials in the system is improved, meanwhile, the hydrolysis rate of a titanium dioxide precursor is further reduced by adopting organic acid citric acid and organic solvents of tetrabutyl titanate, ethanol and ethyl acetate, the dispersibility of the titanium dioxide precursor is obviously improved, the hydrolysis efficiency is reduced, and therefore the high-dispersibility quantum dot titanium dioxide is prepared, and the static pressure resistance of the temperature-resistant PPR water supply pipe can be obviously improved.
In a specific embodiment, the carbon fiber modified polypropylene is also preferably prepared by the following method:
s3, uniformly mixing the carbon fiber, the emulsifier, the photoinitiator, the maleic anhydride and the benzoyl peroxide, reacting completely at 30-40 ℃, irradiating the product for 5-35 s by ultraviolet, crushing to obtain the product,
s4, uniformly mixing the product and polypropylene, completely reacting at 30-40 ℃, carrying out heat treatment on the materials at 195-230 ℃ for 9-17 min, crushing to obtain carbon fiber modified polypropylene,
wherein, the mass portion ratio of polypropylene, carbon fiber, emulsifier, photoinitiator, maleic anhydride and benzoyl peroxide is as follows: 90:17-25:5-11:0.02-0.1:5-11:0.03-0.2.
The following description is needed:
the emulsifier of the invention may be a conventional emulsifier in the art, such as SE-10 emulsifier.
The photoinitiator of the present invention may be a conventional photoinitiator in the art, such as 814 photoinitiator.
The purpose of the SE-10 emulsifier, 814 photoinitiator, maleic anhydride and benzoyl peroxide is to improve the surface activity and dispersion compatibility of the carbon fibers.
The emulsifier SE-10 has excellent effect of improving the surface activity of the material, has photochemical activity, and can form a surface modification interface layer on the surface of the carbon fiber, thereby improving the dispersibility and compatibility of the carbon fiber in the material; and maleic anhydride is an excellent compatibility modifier, so that the dispersibility and compatibility of the carbon fiber in polypropylene can be further improved, the reinforcing effect of the carbon fiber on the polypropylene is further improved, and the static pressure resistance and the heat resistance of the temperature-resistant PPR water supply pipe are obviously improved.
In a specific embodiment, the porous calcium sulfate is also preferably prepared by the following method:
s5, uniformly mixing calcium hydroxide, water, acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, ethanol, glycerol, methylene bisacrylamide and ammonium persulfate, reacting for 0.5-5 h at 31-45 ℃, completely reacting the crushed product at 4 ℃, adding an aqueous solution of ferric sulfate, maintaining the reaction condition, continuously reacting for 3-6 h, heating the temperature of a reaction kettle to 10 ℃ for reacting for 5h, vacuum drying and crushing the product,
s6, performing heat treatment at 100 ℃ for 1h,200 ℃ for 2h,300 ℃ for 2h,400 ℃ for 1h,500 ℃ for 3h and 550 ℃ for 3h, crushing, washing and drying to obtain the porous calcium sulfate.
Among them, the washing operation of S6 may be referred to as follows:
washing 3 times with 3% sulfuric acid water solution, washing 3 times with water, washing 3 times with ethanol, and drying to obtain porous calcium sulfate.
The following description is needed:
the purpose of adding calcium hydroxide in the preparation method of the porous calcium sulfate is to further improve the porosity of the calcium sulfate.
In the preparation method of the porous calcium sulfate, acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and methylene bisacrylamide are polymerized to form a three-dimensional network structure, calcium hydroxide is dispersed in the three-dimensional network structure of the polyacrylamide by assistance of ethanol and glycerol, the polyacrylamide has strong water absorption performance, an aqueous solution of sulfuric acid can be absorbed and converted into a polyacrylamide material, calcium hydroxide and ferric sulfate are in the aqueous solution, calcium sulfate and a pore-forming agent ferric hydroxide are synchronously co-precipitated in the polyacrylamide step by step due to the difference of hydrolysis and solubility product constants, and the porous calcium sulfate is formed after heat treatment and acid treatment, so that the prepared porous calcium sulfate has excellent pore structure and can improve the static pressure resistance and the heat resistance of a temperature-resistant PPR water supply pipe.
On the other hand, the invention also specifically protects a preparation method of the temperature-resistant PPR water supply pipe, which comprises the following steps:
uniformly mixing polypropylene, quantum dot titanium dioxide, porous calcium sulfate, carbon fiber modified polypropylene, nano calcium carbonate, calcium stearate, zinc stearate and ammonium polyphosphate, mixing and reacting for 1-5 min at 199-207 ℃, and extruding and forming at 217-236 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
On the other hand, the invention also specifically protects the application of the temperature-resistant PPR water supply pipe in preparing the PPR pipe.
The invention also specifically protects a PPR pipe, which is prepared from the temperature-resistant PPR water supply pipe.
Compared with the prior art, the invention has the beneficial effects that:
the temperature-resistant PPR water supply pipe comprises the components of the quantum dot titanium dioxide, the porous calcium sulfate and the carbon fiber modified polypropylene, wherein the quantum dot titanium dioxide has high dispersibility, the carbon fiber in the carbon fiber modified polypropylene has good dispersibility and compatibility in the polypropylene, the reinforcing effect of the carbon fiber on the polypropylene is further improved, and the porous calcium sulfate has an excellent pore structure, so that the static pressure resistance and the heat resistance of the temperature-resistant PPR water supply pipe can be effectively improved due to the synergistic effect of the components.
The temperature-resistant PPR water supply pipe can keep 1863h at 125 ℃ under 3.5MPa static pressure without rupture and leakage, and can keep no rupture and no leakage at 20 ℃, 16.0MPa, 1h hydrostatic test, 5 ℃, 16.0MPa, 1h hydrostatic test and-5 ℃, 16.0MPa and 1h hydrostatic test, and has good temperature resistance and static pressure resistance.
Detailed Description
The invention will be further described with reference to the following specific embodiments, but the examples are not intended to limit the invention in any way. Raw materials reagents used in the examples of the present invention are conventionally purchased raw materials reagents unless otherwise specified.
Example 1
The temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 18.5 parts of quantum dot titanium dioxide, 21 parts of porous calcium sulfate, 28.6 parts of carbon fiber modified polypropylene, 15.3 parts of nano calcium carbonate, 5 parts of calcium stearate, 6 parts of zinc stearate and 12 parts of ammonium polyphosphate.
The carbon fiber modified polypropylene is prepared by the following method:
21 parts of carbon fiber, 7 parts of SE-10 emulsifier, 0.05 part of 814 photoinitiator, 7.5 parts of maleic anhydride and 0.06 part of benzoyl peroxide are weighed and added into a high-speed mixer, the mixing speed is 600r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the product is illuminated for 15s by a 3000W LED ultraviolet lamp, the crushing is carried out, the material and 90 parts of polypropylene are transferred into the high-speed mixer, the mixing speed is 800r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the material is subjected to heat treatment for 11min at 197 ℃, and the crushing is carried out, thus obtaining the carbon fiber modified polypropylene.
The porous calcium sulfate is prepared by the following method:
15 parts of calcium hydroxide, 50 parts of water, 13.5 parts of acrylamide, 3.6 parts of 2-acrylamide-2-methylpropanesulfonic acid, 21 parts of ethanol, 15.6 parts of glycerol, 0.06 part of methylene bisacrylamide and 0.05 part of ammonium persulfate are weighed and added into a reaction kettle, the stirring speed is 220r/min, the reaction is carried out for 2 hours under the condition of maintaining the system reaction temperature at 35 ℃, the product is crushed, the materials are transferred into the reaction kettle, the stirring speed is 300r/min, the reaction is carried out for 30 minutes under the condition of maintaining the system reaction temperature at 4 ℃, the mixture of 18 parts of ferric sulfate and 50 parts of water is weighed and added into the reaction kettle according to the adding rate of 0.02 part/min, the reaction is continued for 5 hours under the condition of maintaining the reaction, the temperature of the reaction kettle is raised to 10 ℃, the product is dried for 5 hours under the vacuum condition of 90 ℃ and minus 0.1MPa, the product is crushed,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% sulfuric acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain porous calcium sulfate.
The quantum dot titanium dioxide is prepared by the following method:
180 parts of ethanol, 95 parts of ethyl acetate, 12 parts of ethyl cellulose and 13 parts of cellulose acetate are weighed and added into a reaction kettle, the stirring speed is 230r/min, the reaction temperature is 70 ℃ for 50min, the temperature of the reaction kettle is reduced to 45 ℃, 35 parts of tetrabutyl titanate is added into the reaction kettle, the reaction is continued for 35min under the reaction conditions, 13 parts of water and 11 parts of citric acid mixed solution are weighed and added into the reaction kettle according to the adding rate of 0.01 part/min, the reaction is continued for 6h under the reaction conditions,
vacuum drying the product at 60 ℃ and minus 0.1MPa for 5 hours, crushing, heat-treating the product at 100 ℃ for 1 hour, heat-treating the product at 200 ℃ for 2 hours, heat-treating the product at 300 ℃ for 2 hours, heat-treating the product at 400 ℃ for 1 hour, heat-treating the product at 500 ℃ for 3 hours, heat-treating the product at 550 ℃ for 3 hours, crushing, washing the product with 3% acetic acid aqueous solution for 3 times, washing the product with water for 3 times, washing the product with ethanol for 3 times, and drying the product to obtain the quantum dot titanium dioxide.
The preparation method of the temperature-resistant PPR water supply pipe in the embodiment 1 comprises the following steps:
adding the components into a high-speed mixer, mixing and reacting for 3min at 202 ℃ by using the high-speed mixer, and extruding and molding at 218 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
Example 2
The temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 15 parts of quantum dot titanium dioxide, 18 parts of porous calcium sulfate, 25 parts of carbon fiber modified polypropylene, 13 parts of nano calcium carbonate, 3 parts of calcium stearate, 3 parts of zinc stearate and 9 parts of ammonium polyphosphate.
The carbon fiber modified polypropylene is prepared by the following method:
17 parts of carbon fiber, 5 parts of SE-10 emulsifier, 0.02 part of 814 photoinitiator, 5 parts of maleic anhydride and 0.03 part of benzoyl peroxide are weighed and added into a high-speed mixer, the mixing speed is 600r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the product is subjected to illumination for 5s by a 3000W LED ultraviolet lamp, the crushing is carried out, the material and 90 parts of polypropylene are transferred into the high-speed mixer, the mixing speed is 800r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the material is subjected to heat treatment for 17min at 195 ℃, and the crushing is carried out, thus obtaining the carbon fiber modified polypropylene.
The porous calcium sulfate is prepared by the following method:
15 parts of calcium hydroxide, 45.5 parts of water, 12 parts of acrylamide, 3 parts of 2-acrylamide-2-methylpropanesulfonic acid, 18 parts of ethanol, 12 parts of glycerol, 0.03 part of methylene bisacrylamide and 0.02 part of ammonium persulfate are weighed and added into a reaction kettle, the stirring speed is 220r/min, the reaction is carried out for 5 hours under the condition of maintaining the system reaction temperature at 31 ℃, the product is crushed, the materials are transferred into the reaction kettle, the stirring speed is 300r/min, the reaction is carried out for 30 minutes under the condition of maintaining the system reaction temperature at 4 ℃, the mixture of 15 parts of ferric sulfate and 45.5 parts of water is weighed and added into the reaction kettle according to the adding rate of 0.02 part/min, the reaction is continued for 3 hours under the condition of maintaining the reaction, the temperature of the reaction kettle is raised to 10 ℃ for 5 hours, the product is dried under the vacuum for 5 hours under the conditions of 90 ℃ and 0.1MPa, the product is crushed,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% sulfuric acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain porous calcium sulfate.
The quantum dot titanium dioxide is prepared by the following method:
160 parts of ethanol, 93 parts of ethyl acetate, 9 parts of ethylcellulose and 10 parts of cellulose acetate are weighed and added into a reaction kettle, the stirring speed is 230r/min, the reaction temperature is 70 ℃ for 50min, the temperature of the reaction kettle is reduced to 45 ℃, 35 parts of tetrabutyl titanate is added into the reaction kettle, the reaction is continued for 35min under the reaction condition, 9 parts of water and 8 parts of citric acid mixed solution are weighed and added into the reaction kettle according to the adding rate of 0.01 part/min, the reaction is continued for 3h under the reaction condition, the product is dried for 5h under the vacuum condition of 60 ℃ and minus 0.1MPa, and crushed,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% acetic acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain the quantum dot titanium dioxide.
The preparation method of the temperature-resistant PPR water supply pipe in the embodiment 2 comprises the following steps:
adding the components into a high-speed mixer, mixing and reacting for 5min at 199 ℃ by using the high-speed mixer, and extruding and molding at 217 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
Example 3
The temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 29 parts of quantum dot titanium dioxide, 31 parts of porous calcium sulfate, 36 parts of carbon fiber modified polypropylene, 20 parts of nano calcium carbonate, 7 parts of calcium stearate, 9 parts of zinc stearate and 16 parts of ammonium polyphosphate.
The carbon fiber modified polypropylene is prepared by the following method:
weighing 25 parts of carbon fiber, 11 parts of SE-10 emulsifier, 0.1 part of 814 photoinitiator, 11 parts of maleic anhydride and 0.2 part of benzoyl peroxide, adding into a high-speed mixer, reacting for 10min at the reaction temperature of a system of 600r/min, irradiating the product for 35s by a 3000W LED ultraviolet lamp, crushing, transferring the material and 90 parts of polypropylene into the high-speed mixer, reacting for 10min at the reaction temperature of the system of 800r/min, heat-treating the material for 9min at the temperature of 230 ℃, and crushing to obtain the carbon fiber modified polypropylene.
The porous calcium sulfate is prepared by the following method:
15 parts of calcium hydroxide, 60 parts of water, 20 parts of acrylamide, 7 parts of 2-acrylamide-2-methylpropanesulfonic acid, 30 parts of ethanol, 23 parts of glycerol, 3 parts of methylene bisacrylamide and 0.7 part of ammonium persulfate are weighed and added into a reaction kettle, the stirring speed is 220r/min, the reaction is carried out for 0.5h under the condition of maintaining the system reaction temperature at 45 ℃, the product is crushed, the materials are transferred into the reaction kettle, the stirring speed is 300r/min, the reaction is carried out for 30min under the condition of maintaining the system reaction temperature at 4 ℃, the mixture of 25 parts of ferric sulfate and 60 parts of water is weighed and added into the reaction kettle according to the adding rate of 0.02 part/min, the reaction is continued for 6h under the condition of maintaining the reaction, the temperature of the reaction kettle is raised to 10 ℃ for 5h, the product is dried under the vacuum condition of 90 ℃ to-0.1 MPa for 5h, the crushing,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% sulfuric acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain porous calcium sulfate.
The quantum dot titanium dioxide is prepared by the following method:
adding 210 parts of ethanol, 135 parts of ethyl acetate, 20 parts of ethylcellulose and 22 parts of cellulose acetate into a reaction kettle, reacting at a stirring speed of 230r/min and a reaction temperature of 70 ℃ for 50min, cooling the reaction kettle to 45 ℃, adding 35 parts of tetrabutyl titanate into the reaction kettle, maintaining the reaction condition for 35min, continuously reacting, weighing 18 parts of water and 17 parts of citric acid mixed solution, adding into the reaction kettle according to an adding rate of 0.01 part/min, maintaining the reaction condition for continuously reacting for 8h, vacuum drying the product at 60 ℃ and minus 0.1MPa for 5h, crushing,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% acetic acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain the quantum dot titanium dioxide.
The preparation method of the temperature-resistant PPR water supply pipe in the embodiment 3 comprises the following steps:
adding the components into a high-speed mixer, mixing and reacting for 1min at 207 ℃ by using the high-speed mixer, and extruding and molding at 236 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
Example 4
The temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 15.9 parts of quantum dot titanium dioxide, 18.7 parts of porous calcium sulfate, 28.7 parts of carbon fiber modified polypropylene, 14.5 parts of nano calcium carbonate, 3.7 parts of calcium stearate, 3.9 parts of zinc stearate and 9.6 parts of ammonium polyphosphate.
The carbon fiber modified polypropylene is prepared by the following method:
17.5 parts of carbon fiber, 6.3 parts of SE-10 emulsifier, 0.03 part of 814 photoinitiator, 5.6 parts of maleic anhydride and 0.05 part of benzoyl peroxide are weighed and added into a high-speed mixer, the mixing speed is 600r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the product is irradiated by a 3000W LED ultraviolet lamp for 8s and crushed, the material and 90 parts of polypropylene are transferred into the high-speed mixer, the mixing speed is 800r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the material is subjected to heat treatment for 10min under the condition of maintaining the reaction temperature of 196 ℃, and the crushed, so that the carbon fiber modified polypropylene is obtained.
The porous calcium sulfate is prepared by the following method:
15 parts of calcium hydroxide, 49 parts of water, 13.5 parts of acrylamide, 3.7 parts of 2-acrylamide-2-methylpropanesulfonic acid, 19.2 parts of ethanol, 13.1 parts of glycerol, 0.06 part of methylene bisacrylamide and 0.07 part of ammonium persulfate are weighed and added into a reaction kettle, the stirring speed is 220r/min, the reaction is carried out for 0.9h under the condition of maintaining the system reaction temperature at 33 ℃, the product is crushed, the materials are transferred into the reaction kettle, the stirring speed is 300r/min, the reaction is carried out for 30min under the condition of maintaining the system reaction temperature at 4 ℃, 16.3 parts of ferric sulfate and 49 parts of water are weighed and added into the reaction kettle according to the adding rate of 0.02 part/min, the continuous reaction is carried out for 3.5h under the reaction condition, the temperature of the reaction kettle is raised to 10 ℃, the product is dried for 5h under the vacuum condition of 90 ℃ to minus 0.1MPa, the product is crushed,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% sulfuric acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain porous calcium sulfate.
The quantum dot titanium dioxide is prepared by the following method:
adding 168 parts of ethanol, 95 parts of ethyl acetate, 9.8 parts of ethyl cellulose and 11.6 parts of cellulose acetate into a reaction kettle, stirring at a speed of 230r/min, reacting at a temperature of 70 ℃ for 50min, cooling the reaction kettle to 45 ℃, adding 35 parts of tetrabutyl titanate into the reaction kettle, maintaining the reaction condition for continuous reaction for 35min, weighing 11.2 parts of water and 9.5 parts of citric acid mixed solution, adding into the reaction kettle according to an adding rate of 0.01 part/min, maintaining the reaction condition for continuous reaction for 3.5h, vacuum drying the product at 60 ℃ and-0.1 MPa for 5h, crushing,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% acetic acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain the quantum dot titanium dioxide.
The preparation method of the temperature-resistant PPR water supply pipe in the embodiment 4 is as follows:
adding the mixture into a high-speed mixer, mixing and reacting for 2min at the temperature of 201 ℃ by using the high-speed mixer, and extruding and molding at the temperature of 219 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
Example 5
The temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 19.6 parts of quantum dot titanium dioxide, 21.3 parts of porous calcium sulfate, 29.7 parts of carbon fiber modified polypropylene, 16.4 parts of nano calcium carbonate, 5.1 parts of calcium stearate, 5.6 parts of zinc stearate and 12.9 parts of ammonium polyphosphate.
The carbon fiber modified polypropylene is prepared by the following method:
19.7 parts of carbon fiber, 7.9 parts of SE-10 emulsifier, 0.05 part of 814 photoinitiator, 7.2 parts of maleic anhydride and 0.08 part of benzoyl peroxide are weighed and added into a high-speed mixer, the mixing speed is 600r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the product is irradiated for 16s by a 3000W LED ultraviolet lamp, the product is crushed, the material and 90 parts of polypropylene are transferred into the high-speed mixer, the mixing speed is 800r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the material is subjected to heat treatment for 13min under the temperature of 206 ℃, and the crushed, so that the carbon fiber modified polypropylene is obtained.
The porous calcium sulfate is prepared by the following method:
15 parts of calcium hydroxide, 52 parts of water, 14.6 parts of acrylamide, 5.1 parts of 2-acrylamide-2-methylpropanesulfonic acid, 22.3 parts of ethanol, 14.9 parts of glycerol, 0.09 part of methylene bisacrylamide and 0.22 part of ammonium persulfate are weighed and added into a reaction kettle, the stirring speed is 220r/min, the reaction is carried out for 2 hours under the condition of maintaining the system reaction temperature at 36 ℃, the product is crushed, the materials are transferred into the reaction kettle, the stirring speed is 300r/min, the reaction is carried out for 30 minutes under the condition of maintaining the system reaction temperature at 4 ℃, 18.8 parts of ferric sulfate and 52 parts of water are weighed and added into the reaction kettle according to the adding rate of 0.02 part/min, the continuous reaction is carried out for 4.5 hours under the reaction condition, the temperature of the reaction kettle is raised to 10 ℃, the product is dried for 5 hours under the vacuum condition of 90 ℃ to minus 0.1MPa, the product is crushed,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% sulfuric acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain porous calcium sulfate.
The quantum dot titanium dioxide is prepared by the following method:
185 parts of ethanol, 108 parts of ethyl acetate, 13.5 parts of ethyl cellulose and 14.1 parts of cellulose acetate are weighed and added into a reaction kettle, the stirring speed is 230r/min, the reaction temperature is 70 ℃ for 50min, the reaction kettle temperature is reduced to 45 ℃, 35 parts of tetrabutyl titanate is added into the reaction kettle, the reaction is continued for 35min under the reaction condition, 13.7 parts of water and 12.5 parts of citric acid mixed solution are weighed and added into the reaction kettle according to the addition rate of 0.01 part/min, the reaction is continued for 5h under the reaction condition, the product is dried under the vacuum of 60 ℃ and minus 0.1MPa for 5h, and the product is crushed,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% acetic acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain the quantum dot titanium dioxide.
The preparation method of the temperature-resistant PPR water supply pipe in the embodiment 5 is as follows:
adding the components into a high-speed mixer, mixing and reacting for 3min at 203 ℃ by using the high-speed mixer, and extruding and molding at 223 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
Example 6
The temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 19 parts of quantum dot titanium dioxide, 21 parts of porous calcium sulfate, 29 parts of carbon fiber modified polypropylene, 16 parts of nano calcium carbonate, 5 parts of calcium stearate, 7 parts of zinc stearate and 12 parts of ammonium polyphosphate.
The carbon fiber modified polypropylene is prepared by the following method:
weighing 20 parts of carbon fiber, 10 parts of SE-10 emulsifier, 0.05 part of 814 photoinitiator, 9 parts of maleic anhydride and 0.07 part of benzoyl peroxide, adding into a high-speed mixer, reacting for 10min at the reaction temperature of a system of 600r/min, illuminating the product for 18s by a 3000W LED ultraviolet lamp, crushing, transferring the material and 90 parts of polypropylene into the high-speed mixer, reacting for 10min at the reaction temperature of the system of 800r/min, heat-treating the material for 13min at the temperature of 202 ℃, and crushing to obtain the carbon fiber modified polypropylene.
The porous calcium sulfate is prepared by the following method:
15 parts of calcium hydroxide, 50 parts of water, 15 parts of acrylamide, 5 parts of 2-acrylamide-2-methylpropanesulfonic acid, 23 parts of ethanol, 16 parts of glycerol, 0.08 part of methylene bisacrylamide and 0.07 part of ammonium persulfate are weighed and added into a reaction kettle, the stirring speed is 220r/min, the reaction is carried out for 1.5 hours under the condition of maintaining the system reaction temperature at 35 ℃, the product is crushed, the materials are transferred into the reaction kettle, the stirring speed is 300r/min, the reaction is carried out for 30 minutes under the condition of maintaining the system reaction temperature at 4 ℃, the mixture of 19 parts of ferric sulfate and 50 parts of water is weighed and added into the reaction kettle according to the adding rate of 0.02 part/min, the reaction is continued for 4 hours under the condition of maintaining the reaction, the temperature of the reaction kettle is raised to 10 ℃ for 5 hours, the product is dried under the vacuum of 90 ℃ to minus 0.1MPa for 5 hours, and the product is crushed,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% sulfuric acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain porous calcium sulfate.
The quantum dot titanium dioxide is prepared by the following method:
190 parts of ethanol, 105 parts of ethyl acetate, 14 parts of ethyl cellulose and 13 parts of cellulose acetate are weighed and added into a reaction kettle, the stirring speed is 230r/min, the reaction temperature is 70 ℃ for 50min, the temperature of the reaction kettle is reduced to 45 ℃, 35 parts of tetrabutyl titanate is added into the reaction kettle, the reaction is continued for 35min under the reaction condition, 12 parts of water and 11 parts of citric acid mixed solution are weighed and added into the reaction kettle according to the adding rate of 0.01 part/min, the reaction is continued for 5h under the reaction condition, the product is dried for 5h under the vacuum condition of 60 ℃ and minus 0.1MPa, and crushed,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% acetic acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain the quantum dot titanium dioxide.
The preparation method of the temperature-resistant PPR water supply pipe in the embodiment 6 is as follows:
adding the components into a high-speed mixer, mixing and reacting for 3min at 203 ℃ by using the high-speed mixer, and extruding and molding at 219 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
Example 7
The temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 27.6 parts of quantum dot titanium dioxide, 30.1 parts of porous calcium sulfate, 34.3 parts of carbon fiber modified polypropylene, 18.7 parts of nano calcium carbonate, 5.8 parts of calcium stearate, 8.5 parts of zinc stearate and 14.6 parts of ammonium polyphosphate.
The carbon fiber modified polypropylene is prepared by the following method:
23.7 parts of carbon fiber, 10.3 parts of SE-10 emulsifier, 0.09 part of 814 photoinitiator, 10.8 parts of maleic anhydride and 0.17 part of benzoyl peroxide are weighed and added into a high-speed mixer, the mixing speed is 600r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the product is subjected to illumination for 31s by a 3000W LED ultraviolet lamp, the crushing is carried out, the material and 90 parts of polypropylene are transferred into the high-speed mixer, the mixing speed is 800r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the material is subjected to heat treatment for 15min under the temperature of 226 ℃, and the crushing is carried out, so that the carbon fiber modified polypropylene is obtained.
The porous calcium sulfate is prepared by the following method:
15 parts of calcium hydroxide, 53 parts of water, 18.6 parts of acrylamide, 6.1 parts of 2-acrylamide-2-methylpropanesulfonic acid, 28.7 parts of ethanol, 21.5 parts of glycerin, 2.3 parts of methylene bisacrylamide and 0.61 part of ammonium persulfate are weighed and added into a reaction kettle, the stirring speed is 220r/min, the reaction is carried out for 4.5 hours under the condition of maintaining the system reaction temperature at 43 ℃, the product is crushed, the materials are transferred into the reaction kettle, the stirring speed is 300r/min, the reaction is carried out for 30 minutes under the condition of maintaining the system reaction temperature at 4 ℃, the mixture of 23 parts of ferric sulfate and 53 parts of water is weighed and added into the reaction kettle according to the adding speed of 0.02 part/min, the continuous reaction is carried out for 5.5 hours under the condition of maintaining the reaction, the temperature of the reaction kettle is raised to 10 ℃, the product is dried for 5 hours under the conditions of 90 ℃ and-0.1 MPa under vacuum, the crushing,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% sulfuric acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain porous calcium sulfate.
The quantum dot titanium dioxide is prepared by the following method:
adding 205 parts of ethanol, 130 parts of ethyl acetate, 18.5 parts of ethyl cellulose and 21.3 parts of cellulose acetate into a reaction kettle, stirring at a speed of 230r/min, reacting at a temperature of 70 ℃ for 50min, cooling the reaction kettle to 45 ℃, adding 35 parts of tetrabutyl titanate into the reaction kettle, maintaining the reaction condition for continuous reaction for 35min, weighing 17.2 parts of water and 15.8 parts of citric acid mixed solution, adding into the reaction kettle according to an adding rate of 0.01 part/min, maintaining the reaction condition for continuous reaction for 6.5h, vacuum drying the product at 60 ℃ and-0.1 MPa for 5h, crushing,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% acetic acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain the quantum dot titanium dioxide.
The preparation method of the temperature-resistant PPR water supply pipe in the embodiment 7 is as follows:
adding the components into a high-speed mixer, mixing and reacting for 4min at 205 ℃ by using the high-speed mixer, and extruding and molding at 231 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
Example 8
The temperature-resistant PPR water supply pipe comprises the following components in parts by weight:
100 parts of polypropylene, 23.8 parts of quantum dot titanium dioxide, 23.6 parts of porous calcium sulfate, 31.3 parts of carbon fiber modified polypropylene, 16.7 parts of nano calcium carbonate, 5.5 parts of calcium stearate, 6.5 parts of zinc stearate and 14.1 parts of ammonium polyphosphate.
The carbon fiber modified polypropylene is prepared by the following method:
21.5 parts of carbon fiber, 9.9 parts of SE-10 emulsifier, 0.07 part of 814 photoinitiator, 9.6 parts of maleic anhydride and 0.14 part of benzoyl peroxide are weighed and added into a high-speed mixer, the mixing speed is 600r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the product is irradiated for 28s by a 3000W LED ultraviolet lamp, the product is crushed, the material and 90 parts of polypropylene are transferred into the high-speed mixer, the mixing speed is 800r/min, the reaction is carried out for 10min under the condition of maintaining the reaction temperature of the system at 35 ℃, the material is subjected to heat treatment for 14min under the temperature of 216 ℃, and the crushed, so that the carbon fiber modified polypropylene is obtained.
The porous calcium sulfate is prepared by the following method:
15 parts of calcium hydroxide, 53 parts of water, 17.6 parts of acrylamide, 5.5 parts of 2-acrylamide-2-methylpropanesulfonic acid, 23.1 parts of ethanol, 20.5 parts of glycerin, 1.6 parts of methylene bisacrylamide and 0.5 part of ammonium persulfate are weighed and added into a reaction kettle, the stirring speed is 220r/min, the reaction is carried out for 3.5 hours under the condition of maintaining the system reaction temperature at 41 ℃, the product is crushed, the materials are transferred into the reaction kettle, the stirring speed is 300r/min, the reaction is carried out for 30 minutes under the condition of maintaining the system reaction temperature at 4 ℃, 21 parts of ferric sulfate and 53 parts of water mixed solution are weighed and added into the reaction kettle according to the adding speed of 0.02 part/min, the continuous reaction is carried out for 4.5 hours under the condition of maintaining the reaction, the temperature of the reaction kettle is raised to 10 ℃, the product is dried for 5 hours under the conditions of 90 ℃ and minus 0.1MPa under vacuum, the crushing,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% sulfuric acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain porous calcium sulfate.
The quantum dot titanium dioxide is prepared by the following method:
adding 201 parts of ethanol, 123 parts of ethyl acetate, 17.6 parts of ethyl cellulose and 18.2 parts of cellulose acetate into a reaction kettle, stirring at a speed of 230r/min, reacting at a temperature of 70 ℃ for 50min, cooling the reaction kettle to 45 ℃, adding 35 parts of tetrabutyl titanate into the reaction kettle, maintaining the reaction condition for continuous reaction for 35min, weighing 15.6 parts of water and 14.3 parts of citric acid mixed solution, adding into the reaction kettle according to an adding rate of 0.01 part/min, maintaining the reaction condition for continuous reaction for 6.5h, vacuum drying the product at 60 ℃ and-0.1 MPa for 5h, crushing,
the product is subjected to heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h, heat treatment at 550 ℃ for 3h, crushing, washing with 3% acetic acid water solution for 3 times, washing with water for 3 times, washing with ethanol for 3 times, and drying to obtain the quantum dot titanium dioxide.
The preparation method of the temperature-resistant PPR water supply pipe in the embodiment 1 comprises the following steps:
adding the components into a high-speed mixer, mixing and reacting for 3min at 205 ℃ by using the high-speed mixer, and extruding and molding at 227 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
Comparative example 1
The temperature-resistant PPR water supply pipe comprises the components and the contents basically same as those in the embodiment 1 in parts by weight, wherein the difference is that quantum dot titanium dioxide is not added, and the preparation method of each component and the preparation method of the temperature-resistant PPR water supply pipe are the same as those in the embodiment 1.
Comparative example 2
The temperature-resistant PPR water supply pipe comprises the components and the contents basically same as those in the embodiment 1 in parts by weight, wherein porous calcium sulfate is not added, and the preparation method of each component and the preparation method of the temperature-resistant PPR water supply pipe are the same as those in the embodiment 1.
Comparative example 3
The temperature-resistant PPR water supply pipe comprises the components and the contents basically same as those in the embodiment 1 in parts by weight, wherein the carbon fiber modified polypropylene is not added, and the preparation method of each component and the preparation method of the temperature-resistant PPR water supply pipe are the same as those in the embodiment 1.
Comparative example 4
The temperature-resistant PPR water supply pipe comprises the components and the contents basically same as those in the embodiment 1 in parts by weight, wherein the common quantum dot titanium dioxide is selected to replace the quantum dot titanium dioxide in the embodiment 1, and other components and the preparation method are the same as those in the embodiment 1.
Comparative example 5
The temperature-resistant PPR water supply pipe comprises the components and the contents basically same as those in the embodiment 1 in parts by weight, wherein the common porous calcium sulfate is selected to replace the porous calcium sulfate in the embodiment 1, and other components and the preparation method are the same as those in the embodiment 1.
Comparative example 6
The temperature-resistant PPR water supply pipe comprises the components and the contents basically same as those in the embodiment 1 in parts by weight, wherein the common carbon fiber modified polypropylene is selected to replace the carbon fiber modified polypropylene in the embodiment 1, and the other components and the preparation method are the same as those in the embodiment 1.
Result detection
The PPR water supply pipes of the temperature-resistant type prepared in examples 1 to 8 and comparative examples 1 to 6 were tested for static pressure resistance and heat resistance according to GB/T18742.2-2002, and the test results are shown in tables 1 and 2 below.
Table 1 Performance parameters of the temperature-resistant PPR Water supply pipes prepared in examples 1 to 8
Table 2 Performance parameters of the temperature-resistant PPR Water supply pipes produced in example 1 and comparative examples 1 to 6
From table 1, it can be seen that the static pressure resistance and the heat resistance of the temperature-resistant PPR water supply pipe prepared by the embodiments of the present invention are better, which indicates that the temperature-resistant PPR water supply pipe prepared by the raw materials provided by the present invention has better static pressure resistance and heat resistance.
In comparative example 1, the temperature and static pressure resistance of the PPR water supply pipe is obviously not achieved because the test time of the static pressure of 3.5MPa at 125 ℃ is obviously shortened by 813 hours without the quantum dot titanium dioxide component.
In contrast, in comparative example 2, the test time of the PPR water supply pipe at 125 ℃ and the static pressure of 3.5MPa is obviously shortened by 1096 hours, and obviously, the temperature resistance and the static pressure resistance of the invention cannot be achieved.
In contrast, in comparative example 3, the static pressure test time of PPR water supply pipe at 125 ℃ and 3.5MPa is obviously shortened by only 739h, and leakage occurs in hydrostatic tests at 20 ℃ and 16.0MPa and 1h, which indicates that the static pressure resistance is poor and obviously the temperature and static pressure resistance of the invention cannot be achieved.
The conventional and existing quantum dot titanium dioxide, porous calcium sulfate and carbon fiber modified polypropylene in comparative examples 4-6 cannot achieve the temperature and static pressure resistance of the invention.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (7)

1. The temperature-resistant PPR water supply pipe is characterized by comprising the following components in parts by weight: 100 parts of polypropylene, 15-29 parts of quantum dot titanium dioxide, 18-31 parts of porous calcium sulfate, 25-36 parts of carbon fiber modified polypropylene, 13-20 parts of nano calcium carbonate and 15-32 parts of other auxiliary agents;
the quantum dot titanium dioxide is prepared by the following method:
s1, mixing ethanol, ethyl acetate, ethyl cellulose and cellulose acetate, fully reacting at 65-75 ℃, cooling to 45 ℃, adding tetrabutyl titanate, maintaining the continuous reaction under the reaction conditions fully, adding an aqueous solution of citric acid, and maintaining the continuous reaction under the reaction conditions for 3-8 hours to obtain a product;
s2, vacuum drying and crushing a product, and performing heat treatment at 100 ℃ for 1h, heat treatment at 200 ℃ for 2h, heat treatment at 300 ℃ for 2h, heat treatment at 400 ℃ for 1h, heat treatment at 500 ℃ for 3h and heat treatment at 550 ℃ for 3h, crushing, purifying and drying to obtain quantum dot titanium dioxide, wherein the mass part ratio of tetrabutyl titanate, ethanol, ethyl acetate, ethyl cellulose, cellulose acetate, water and citric acid is 35:160-210:93-135:9-20:10-22:9-18:8-17;
the carbon fiber modified polypropylene is prepared by the following method:
s3, uniformly mixing carbon fibers, an emulsifying agent, a photoinitiator, maleic anhydride and benzoyl peroxide, reacting completely at 30-40 ℃, irradiating the product for 5-35 s by ultraviolet, and crushing to obtain the product;
s4, uniformly mixing the product and polypropylene, completely reacting at the temperature of 30-40 ℃, carrying out heat treatment on the materials at the temperature of 195-230 ℃ for 9-17 min, and crushing to obtain carbon fiber modified polypropylene;
the polypropylene, the carbon fiber, the emulsifier, the photoinitiator, the maleic anhydride and the benzoyl peroxide are mixed according to the mass ratio of 90:17-25:5-11:0.02-0.1:5-11:0.03-0.2;
the porous calcium sulfate is prepared by the following method:
s5, uniformly mixing calcium hydroxide, water, acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, ethanol, glycerol, methylene bisacrylamide and ammonium persulfate, reacting for 0.5-5 h at 31-45 ℃, completely reacting the crushed product at 4 ℃, adding an aqueous solution of ferric sulfate, maintaining the reaction condition, continuously reacting for 3-6 h, heating the temperature of a reaction kettle to 10 ℃ for reacting for 5h, and vacuum drying and crushing the product;
s6, performing heat treatment at 100 ℃ for 1h,200 ℃ for 2h,300 ℃ for 2h,400 ℃ for 1h,500 ℃ for 3h and 550 ℃ for 3h, crushing, washing and drying to obtain the porous calcium sulfate.
2. The temperature-resistant PPR water supply pipe as claimed in claim 1, which comprises the following components in parts by weight:
100 parts of polypropylene, 18.5 parts of quantum dot titanium dioxide, 21 parts of porous calcium sulfate, 28.6 parts of carbon fiber modified polypropylene, 15.3 parts of nano calcium carbonate and 23 parts of other auxiliary agents.
3. The temperature-resistant PPR water supply pipe material as claimed in claim 1, wherein the other auxiliary agents comprise, by weight, 3-7 parts of calcium stearate, 3-9 parts of zinc stearate and 9-16 parts of ammonium polyphosphate.
4. The temperature-resistant PPR feedwater tubing of claim 1, wherein the emulsifier is a SE-10 emulsifier.
5. A method for preparing the temperature-resistant PPR water supply pipe according to any one of claims 1 to 4, comprising the following steps:
uniformly mixing polypropylene, quantum dot titanium dioxide, porous calcium sulfate, carbon fiber modified polypropylene, nano calcium carbonate, calcium stearate, zinc stearate and ammonium polyphosphate, mixing and reacting for 1-5 min at 199-207 ℃, and extruding and forming at 217-236 ℃ by using an extruder to obtain the temperature-resistant PPR water supply pipe.
6. An application of the temperature-resistant PPR water supply pipe material as claimed in any one of claims 1 to 4 in preparing a PPR pipe.
7. A PPR pipe, characterized in that the PPR pipe is prepared from the temperature-resistant PPR water supply pipe material according to any one of claims 1-4.
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CN113265103A (en) * 2021-03-19 2021-08-17 河南联塑实业有限公司 Low-permeability PPR composition and preparation method and application thereof

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