WO2023000709A1 - Ingrédient mixte de tuyau d'alimentation en eau de polychlorure de vinyle non plastifié à haute performance et son procédé de préparation - Google Patents

Ingrédient mixte de tuyau d'alimentation en eau de polychlorure de vinyle non plastifié à haute performance et son procédé de préparation Download PDF

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WO2023000709A1
WO2023000709A1 PCT/CN2022/084276 CN2022084276W WO2023000709A1 WO 2023000709 A1 WO2023000709 A1 WO 2023000709A1 CN 2022084276 W CN2022084276 W CN 2022084276W WO 2023000709 A1 WO2023000709 A1 WO 2023000709A1
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calcium carbonate
polyvinyl chloride
water supply
supply pipe
pvc
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PCT/CN2022/084276
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English (en)
Chinese (zh)
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王章林
徐林智
陈智勇
孙华丽
徐军标
刘良斌
齐博
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公元股份有限公司
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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
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • 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
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/016—Additives defined by their aspect ratio
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • 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

Definitions

  • the invention relates to a compounding material and a preparation method of a high-performance rigid polyvinyl chloride water supply pipe, and belongs to the technical field of pipe materials and processing thereof.
  • PVC-U Rigid polyvinyl chloride
  • PVC-U pipe matrix resin usually adopts SG5 type PVC resin.
  • Type PVC resin the use of PVC resin with a lower degree of polymerization will cause the mechanical properties and heat resistance of the product to deteriorate, which in turn will affect the overall service life of the pipeline.
  • the existing rigid PVC water supply pipes on the market have low tensile strength, poor heat resistance, and hydrostatic resistance. Insufficient mechanical properties, etc., the longitudinal shrinkage rate of the pipe after installation is relatively large, especially in summer when the temperature difference is large, and the expansion and contraction of the pipe will easily lead to water seepage at the joint. At the same time, the drag and friction of PVC-U pipes during production, transportation, storage, and installation will also cause certain damage to the outer surface of the pipe, further reducing the performance of the pipe. To sum up, the existing PVC-U water supply pipes can no longer meet the performance requirements of water supply pipes for high-rise and super high-rise buildings.
  • the water supply pipes commonly used in high-rise and super high-rise fields are galvanized steel pipes and PSP steel-plastic composite pipes.
  • the present invention aims at the defects existing in the above prior art, and provides a high-performance rigid polyvinyl chloride water supply pipe mixing material and a preparation method.
  • the problem to be solved is how to make the PVC-U water supply pipe have high heat resistance, high Hydraulic and high wear resistance performance.
  • a compound of high-performance rigid polyvinyl chloride water supply pipe characterized in that the compound comprises the following components by weight:
  • the composite reinforcing material is mainly composed of acrylic acid grafted polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate and dispersant, and the acrylic acid grafted polyvinyl chloride: calcium carbonate whiskers: nano-active calcium carbonate: dispersed
  • the mass ratio of the agent is 1:0.8 ⁇ 1.0:0.8 ⁇ 1.0:0.5 ⁇ 1.0.
  • the PVC-U water supply pipe made of the material of the present invention has high heat resistance, low longitudinal shrinkage, high wear resistance, high tensile strength, and high hydraulic resistance, so that it can completely replace galvanized steel pipe/PSP steel plastic Composite pipes are used in the field of water supply for high-rise/super high-rise buildings.
  • the present invention has an unexpected excellent effect on the performance of wear resistance and heat resistance, and the addition of stabilizers and lubricants can ensure the overall stability of the material. Processability, reduce equipment loss and prevent material decomposition.
  • PVC-SG5 resin it is better to use a resin with an average degree of polymerization of about 1000, which has good flow processability.
  • PVC-SG3 resin it is better to use a resin with an average degree of polymerization of about 1300, which has excellent comprehensive mechanical properties. performance.
  • the calcium carbonate whiskers are calcium carbonate whiskers with an aspect ratio of 25 to 35 and calcium carbonate crystals with an aspect ratio of 5 to 10. It must be a mixture of two different aspect ratios.
  • the mass ratio of the calcium carbonate whiskers with an aspect ratio of 25-35 to the calcium carbonate whiskers with an aspect ratio of 5-10 is 1:0.8-1.2.
  • the calcium carbonate whiskers have a length of 20-60 ⁇ m.
  • the whiskers must be guaranteed to have a certain length.
  • the whiskers will be distributed in the pipe in a relatively orderly manner under the action of the fluid or the direction of movement of the pipe, and the whiskers will be distributed in the pipe in a relatively orderly manner.
  • the stable and uniform distribution of the pipe is more conducive to achieving high wear resistance, but if it is too long, it will be weakened by the movement direction of the pipe; at the same time, the whiskers of the above length are used, and the arrangement of the whiskers is highly ordered. , It can still maintain the integrity of its whiskers under high temperature friction, and ensure the stability of the whisker size, so as to achieve better wear resistance and heat resistance stability.
  • the dispersant is ethylene bis stearic acid amide. It can improve the uniformity of distribution of raw materials in the compounded reinforcing material, and can also improve the uniformity of distribution of the compounded reinforcing material in the overall formula system, so that the lower limit of the performance of the pipeline product made of the material of the present invention is greatly improved; in addition On the one hand, during the pipe extrusion process, good dispersion greatly reduces the influence of pipe wall thickness fluctuations and host current instability caused by the uneven dispersion of compound reinforcing materials in the system.
  • the particle diameter of the nano-active calcium carbonate is 30-50 nm.
  • the use of nano-active calcium carbonate particles with the above particle size can improve the rheological properties of composite reinforcement materials, and the use of nano-scale particles has high specific surface area and high surface energy, making it easier to form mutual interactions between the interfaces of the mixed materials during processing.
  • the overlapping structure has the effect of improving heat resistance.
  • the lubricant is a mixture of an internal lubricant and an external lubricant, and the internal lubricant is selected from monoglyceride, stearic acid and oxidized One or more of polyethylene; the external lubricant is selected from polyethylene wax and/or paraffin wax.
  • the addition of the internal lubricant will directly act on the interior of the primary particles of polyvinyl chloride, increasing the friction between the primary particles, which is conducive to improving the degree of plasticization of the resin; while the addition of the external lubricant can prevent the material from sticking during processing, Ensure the continuity and stability of the pipe extrusion process.
  • the compounding material of the above-mentioned high-performance rigid polyvinyl chloride water supply pipe preferably, the compounding material further contains 0.5-3.0 parts by weight of an acrylic ester processing aid.
  • an acrylic ester processing aid When used as a pipe material, after melting in the mold, it can reduce the melt viscosity and pressure of the compounding material, and improve the overall fluidity of the material.
  • the composite reinforcing material also contains 0.2 to 0.5 parts by weight of potassium titanate whiskers, and the length of the potassium titanate whiskers 22 to 25 ⁇ m. It can form a better synergistic effect with calcium carbonate whiskers, and can better improve the wear resistance and heat resistance and stability of the material.
  • the stabilizer is preferably a calcium-zinc composite stabilizer, which can ensure the stability of the compounding material during processing and extrusion, and facilitate processing and molding.
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of the titanium dioxide accounts for 80% to 80% of the colorant. 85%, which can not only give the color requirements of the pipe used as a water supply pipe, but also enhance the aging resistance of the pipe.
  • the colorant here can also be added with other pigments (the color of the high-performance polyvinyl chloride water supply pipe recommended in the CJ/T493-2016 standard is blue, so the pigment used in the present invention is organic blue).
  • the second object of the present invention is achieved through the following technical solutions, a method for preparing a high-performance rigid polyvinyl chloride water supply pipe, characterized in that the method comprises the following steps:
  • the excellent effect of improving wear resistance and heat resistance is obtained; by using PVC-SG3 and PVC-SG5 as the matrix material, and making The mixed ingredients are melt-extruded at 190°C to 220°C and processed into water supply pipes to obtain excellent hydrostatic resistance; at the same time, the synergistic effect between the ingredients of the above mixed ingredients is used to make the mixed ingredients have better stability and Liquidity is good for production and processing.
  • the calcium carbonate whiskers described in the step A are prepared by the following method:
  • the purpose is to increase the gas attachment area, which is beneficial to the adsorption of the carbon dioxide gas introduced, which is beneficial to the formation of calcium carbonate whiskers, and is also conducive to improving the output efficiency of calcium carbonate whiskers; at the same time , by adding potassium chloride and magnesium chloride, it mainly acts as a crystal form control agent, so that the characteristics of calcium carbonate whiskers can be effectively formed, and it can also ensure that it has an ideal whisker aspect ratio.
  • the present invention has the following advantages:
  • the material can achieve high wear resistance, high heat resistance, and high tensile strength. The effect of elongation and low longitudinal retraction.
  • porous polytetrafluoroethylene plastic sheet as a carrier in the process of processing calcium carbonate whiskers, it can be more conducive to the formation of calcium carbonate whiskers and improve output efficiency, and the addition of potassium chloride and magnesium chloride can be more It is conducive to the formation of calcium carbonate whiskers with ideal aspect ratio.
  • the above-mentioned composite reinforcing material is mainly composed of acrylic acid graft copolymerized polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate and dispersant, And the mass ratio of acrylic acid graft copolymerized polyvinyl chloride: calcium carbonate whisker: nano-active calcium carbonate: dispersant is 1.0:1.0:1.0:1.0, wherein, the dispersant is ethylene bis stearic acid amide; calcium carbonate whisker It is a calcium carbonate whisker with an aspect ratio of 30-35 and the length of the calcium carbonate whisker is 40 ⁇ m.
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 80% of the colorant.
  • SJZ-92/188 conical twin-screw extruder is used, the diameter of the screw head and tail is 92mm, 188mm, the effective length of the screw is 2000mm, and the temperature is kept at 140°C for 2 hours after starting up, and then the temperature of the barrel is set at 170-190°C.
  • the above-mentioned acrylic acid graft copolymerized polyvinyl chloride used can be purchased directly from the market, and the following method is preferably used to prepare the above-mentioned acrylic acid graft copolymerized polyvinyl chloride:
  • the calcium carbonate whisker used above-mentioned is preferably prepared by the following method:
  • the above composite reinforcing materials can be premixed as follows:
  • SHR50L small-scale mixer with oil temperature control is used, the oil temperature is set to preheat to 40°C when starting up, and acrylic acid graft copolymerized polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate and dispersant are sequentially added in proportion, Mix at a low speed of 750rpm for 2 minutes, then turn to 1500rpm and mix at a high speed to 70°C, and discharge to obtain a composite reinforcing material.
  • the above-mentioned high-performance rigid polyvinyl chloride water supply pipe mixing material is preferably mixed to form a mixing material by the following method:
  • SHR800L large-scale mixer with oil temperature control is used, the oil temperature is set to preheat to 60°C, and the proportionally weighed PVC-SG5 resin, PVC-SG3 resin, stabilizer, internal lubricant, and external lubricant are sequentially mixed , processing aids and colorants are put into the hot mixing pot, and when the material is heated to 60°C at a spindle speed of 850rpm, then the compound reinforcing material is added, and the mixing is completed when the spindle speed is 1200rpm to 130°C, and the material is discharged.
  • the cold mixing pot is cold mixed at a speed of 200rpm to 40°C, and the material is discharged, and the high-performance rigid polyvinyl chloride water supply pipe material is obtained.
  • the above-mentioned composite reinforcing material is mainly composed of acrylic acid graft copolymerized polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate and dispersant, and acrylic acid graft copolymerized polyvinyl chloride
  • the mass ratio of ethylene: calcium carbonate whiskers: nano-active calcium carbonate: dispersant is 1.0:1.0:1.0:0.8, wherein the dispersant is ethylene bis stearic acid amide; the calcium carbonate whiskers have an aspect ratio of 5 ⁇ 10 calcium carbonate whiskers and the length of the calcium carbonate whiskers is 30 ⁇ m.
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 85% of the colorant.
  • PVC-SG5 25; PVC-SG3: 75; Calcium zinc stabilizer: 3.0; Compound reinforcement material: 10; Internal lubricant monoglyceride: 0.1; Internal lubricant stearic acid: 0.1; Internal lubricant oxidized polyethylene : 0.1; external lubricant polyethylene wax: 1.5; processing aid: 1.5; Composition, and the mass ratio of acrylic acid graft copolymerized polyvinyl chloride: calcium carbonate whisker: nano-active calcium carbonate: dispersant is 1.0:1.0:1.0:1.0, wherein, the dispersant is ethylene bis stearic acid amide, nano-active
  • the particle size of the calcium carbonate is 30nm; the calcium carbonate whiskers are calcium carbonate whiskers with an aspect ratio of 25-35 and the length of the calcium carbonate whiskers is 20 ⁇ m.
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 85% of the colorant.
  • PVC-SG5 35; PVC-SG3: 70; calcium-zinc stabilizer: 1.5; compound reinforcement material: 15; internal lubricant monoglyceride: 1.0; internal lubricant stearic acid: 0.5; internal lubricant oxidized polyethylene : 1.0; external lubricant polyethylene wax: 1.0; processing aid: 0.5; coloring agent: 0.3;
  • the above-mentioned composite reinforcing material is mainly composed of acrylic acid graft copolymerized polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate and dispersant Composition, and the mass ratio of acrylic acid graft copolymerized polyvinyl chloride: calcium carbonate whiskers: nano-active calcium carbonate: dispersant is 1.0:0.8:1.0:0.5.
  • the particle diameter of above-mentioned nano active calcium carbonate is 30nm, and dispersant is ethylene bis stearic acid amide;
  • Calcium carbonate whisker is the calcium carbonate whisker that aspect ratio is 25 ⁇ 35 and the aspect ratio is the carbonic acid of 5 ⁇ 10 Calcium whiskers are a mixture of two different aspect ratios, and the mass ratio of calcium carbonate whiskers with an aspect ratio of 25-35 to calcium carbonate whiskers with an aspect ratio of 5-10 is 1:0.8, and the above two The lengths of the calcium carbonate whiskers with aspect ratios were all 20 ⁇ m.
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 85% of the colorant.
  • the above-mentioned composite reinforcing material is mainly composed of acrylic acid graft copolymerized polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate and dispersant, and acrylic acid graft copolymerized polyvinyl chloride
  • Ethylene calcium carbonate whiskers: nano-active calcium carbonate: dispersant mass ratio is 1.0:0.8:0.8:0.5, wherein the dispersant is ethylene bis stearic acid amide; calcium carbonate whiskers have an aspect ratio of 25 ⁇ 35 calcium carbonate whiskers and calcium carbonate whiskers with an aspect ratio of 5 to 10 are a mixture of two different aspect ratios, and calcium carbonate whiskers with an aspect ratio of 25
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 82% of the colorant.
  • the above-mentioned composite reinforcing material is mainly composed of acrylic acid graft copolymerized polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate, dispersant and potassium titanate whiskers, and The mass ratio of acrylic acid graft copolymerized polyvinyl chloride: calcium carbonate whisker: nano-active calcium carbonate: dispersant is 1.0:0.8:0.8:0.5:0.2; the length of potassium titanate whisker is 22 ⁇ m, and the dispersant is B Bis stearic acid amide.
  • Calcium carbonate whiskers are a mixture of calcium carbonate whiskers with an aspect ratio of 25-35 and calcium carbonate whiskers with an aspect ratio of 5-10, and calcium carbonate whiskers with an aspect ratio of 25-35
  • the mass ratio of the whiskers to the calcium carbonate whiskers with an aspect ratio of 5-10 is 1:1, and the lengths of the calcium carbonate whiskers with the above two aspect ratios are both 40 ⁇ m.
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 82% of the colorant.
  • this comparative example replaces calcium carbonate whiskers with nano-active calcium carbonate.
  • the compounding material of the high-performance rigid polyvinyl chloride water supply pipe of this comparative example comprises the composition of following parts by weight:
  • PVC-SG5 35; PVC-SG3: 70; calcium-zinc stabilizer: 1.5; compound reinforcement material: 15; internal lubricant monoglyceride: 1.0; internal lubricant stearic acid: 0.5; internal lubricant oxidized polyethylene : 1.0; external lubricant polyethylene wax: 1.0; processing aid: 0.5;
  • the mass ratio of branch copolymerized polyvinyl chloride: nano-active calcium carbonate: dispersant is 1.0:1.8:0.5.
  • the particle diameter of above-mentioned nano active calcium carbonate is 30nm, and dispersant is ethylene bis stearic acid amide.
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 85% of the colorant.
  • this comparative example uses PVC-SG5 to replace PVC-SG3, that is, adopts a single PVC -SG5 was used as the base material for comparison.
  • the compounding material of the high-performance rigid polyvinyl chloride water supply pipe of this comparative example comprises the composition of following parts by weight:
  • PVC-SG5 100; calcium zinc stabilizer: 3.0; compound reinforcement material: 10; internal lubricant monoglyceride: 0.1; internal lubricant stearic acid: 0.1; internal lubricant oxidized polyethylene: 0.1; external lubricant Polyethylene wax: 1.5; processing aid: 1.5; coloring agent: 0.5;
  • the above-mentioned composite reinforcing material is mainly composed of acrylic acid grafted copolymerized polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate and dispersant, and acrylic acid grafted Copolyvinyl chloride: calcium carbonate whiskers: nano-active calcium carbonate: the mass ratio of dispersant is 1.0: 1.0: 1.0: 1.0, wherein, the dispersant is ethylene bis stearic acid amide, and the particle size of nano-active calcium carbonate is 30nm; the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 85% of the colorant.
  • this comparative example uses longer calcium carbonate whiskers for comparison and illustration.
  • the compounding material of the high-performance rigid polyvinyl chloride water supply pipe of this comparative example comprises the composition of following parts by weight:
  • the above-mentioned composite reinforcing material is mainly composed of acrylic acid graft copolymerized polyvinyl chloride, calcium carbonate whiskers, nano-active calcium carbonate and dispersant, And the mass ratio of acrylic acid graft copolymerized polyvinyl chloride: calcium carbonate whisker: nano-active calcium carbonate: dispersant is 1.0:1.0:1.0:1.0, wherein, the dispersant is ethylene bis stearic acid amide; calcium carbonate whisker It is a calcium carbonate whisker with an aspect ratio of 30-35 and the length of the calcium carbonate whisker is 100 ⁇ m.
  • the colorant is a blend of titanium dioxide and organic blue pigment, and the mass content of titanium dioxide accounts for 80% of the colorant.
  • the mixed ingredients obtained in the above-mentioned examples and comparative examples were randomly selected to carry out corresponding performance tests.
  • the specific test method is tested according to the mixed material requirements in the urban construction standard "CJ/T 493-2016 High-performance rigid polyvinyl chloride pipes and their connectors for water supply”.

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  • Chemical & Material Sciences (AREA)
  • 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

La présente invention concerne le domaine technique des matériaux de pipeline et son traitement, et concerne un ingrédient mixte de tuyau d'alimentation en eau de polychlorure de vinyle (PVC) non plastifié à haute performance, et son procédé de préparation. L'invention concerne un ingrédient mixte de tuyau d'alimentation en eau de PVC non plastifié à haute performance et son procédé de préparation, destiné à être utilisé pour résoudre les problèmes existants de faible résistance à la chaleur, etc. L'ingrédient mixte comprend les composants suivants en parties en poids : PVC-SG 5 : 25 à 50 ; PVC-SG 3 : 50 à 70 ; un stabilisant : 1,5 à 3,0 ; un matériau de renforcement de composé : 5,0 à 20 ; un lubrifiant : 0,1 à 5,0 ; et un agent colorant : 0,1 à 0,5. Le matériau de renforcement composite est principalement composé de PVC copolymérisé greffé d'acide acrylique, de trichites de carbonate de calcium, de carbonate de calcium nano-actif et d'un dispersant. Le procédé comprend le mélange de l'ingrédient mixte, la réalisation d'une extrusion à l'état fondu sur celui-ci, sa mise en forme, son refroidissement et sa découpe pour obtenir le matériau de tuyau correspondant. La présente invention permet d'obtenir les effets d'une résistance à l'usure élevée, d'une résistance à la chaleur élevée, d'une résistance à la traction élevée et d'un faible retrait longitudinal du matériau.
PCT/CN2022/084276 2021-07-21 2022-03-31 Ingrédient mixte de tuyau d'alimentation en eau de polychlorure de vinyle non plastifié à haute performance et son procédé de préparation WO2023000709A1 (fr)

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CN202110823659.7A CN113337055B (zh) 2021-07-21 2021-07-21 一种高性能硬质聚氯乙烯给水管材的混配料及制备方法

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Cited By (3)

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CN116814025A (zh) * 2023-08-05 2023-09-29 杭州鑫璐实业有限公司 一种改性复合聚氯乙烯塑料粒子及其生产工艺
CN116855021A (zh) * 2023-09-05 2023-10-10 山东骏昂新材料科技有限公司 一种耐磨塑料件配方及生产工艺
CN117645764A (zh) * 2023-11-30 2024-03-05 浙江飞龙管业集团有限公司 一种耐高温pvc管材及其制造工艺

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113337055B (zh) * 2021-07-21 2022-08-09 公元股份有限公司 一种高性能硬质聚氯乙烯给水管材的混配料及制备方法
CN115073871A (zh) * 2022-07-15 2022-09-20 浙江煜华车饰有限公司 耐磨型pvc塑料及其制备方法

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