CN113881157A - Antibacterial PVC water supply pipe and preparation method thereof - Google Patents

Antibacterial PVC water supply pipe and preparation method thereof Download PDF

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Publication number
CN113881157A
CN113881157A CN202010625060.8A CN202010625060A CN113881157A CN 113881157 A CN113881157 A CN 113881157A CN 202010625060 A CN202010625060 A CN 202010625060A CN 113881157 A CN113881157 A CN 113881157A
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China
Prior art keywords
parts
pvc
water supply
supply pipe
antibacterial
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Pending
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CN202010625060.8A
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Chinese (zh)
Inventor
罗煜
罗小妍
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Chuxiong Runfeng Plastic Industry Co ltd
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Chuxiong Runfeng Plastic Industry Co ltd
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Priority to CN202010625060.8A priority Critical patent/CN113881157A/en
Publication of CN113881157A publication Critical patent/CN113881157A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions 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
    • C08L27/02Compositions 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
    • C08L27/04Compositions 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
    • C08L27/06Homopolymers or copolymers of vinyl chloride
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0022Combinations of extrusion moulding with other shaping operations combined with cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/885External treatment, e.g. by using air rings for cooling tubular films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00Tubular articles
    • B29L2023/22Tubes or pipes, i.e. rigid
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/18Applications used for pipes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00Properties characterising the ingredient of the composition
    • C08L2207/04Thermoplastic elastomer

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses an antibacterial PVC water supply pipe and a preparation method thereof, wherein the antibacterial PVC water supply pipe comprises 90-130 parts of PVC, 20-50 parts of TPE, 1-3 parts of alkene soil stabilizer, 0.5-1.5 parts of polyethylene wax, 0.5-6 parts of MBS2 and 0.5-1.5 parts of titanium dioxide, qualified products are obtained by mixing, extruding and sizing raw materials, and the antibacterial and nontoxic properties of a PVC pipeline are realized by the aspects of formula design and process control.

Description

Antibacterial PVC water supply pipe and preparation method thereof
Technical Field
The invention relates to the technical field of plastic products, in particular to an antibacterial PVC water supply pipe and a preparation method thereof.
Background
Since 80 s of the last century, PVC pipes are mass-produced and applied in China, are plastic pipes which are the most mature in production and technical application at present, and are applied to the field of water supply in a large scale, the PVC pipes have the advantages of high strength, low cost, chemical corrosion resistance, flame retardance and the like, the short-term and long-term compressive strength of PVC materials is higher than that of PE, PP, PB and the like at normal temperature, however, the PVC materials suffer from safety and sanitation for a long time in the development process, and GB/T1729-1998 safety evaluation standards of drinking water transportation and distribution equipment and protective materials for life is implemented in 10 months and 1 day of the year. The standard clearly stipulates that the lead content of the domestic drinking water delivery and distribution equipment and the protective material is less than 0.005mg/L, the content of Vinyl Chloride (VCM) monomer is less than 1.0mg/KG, then the Ministry of health in 2001 issues a domestic drinking water quality standard and a domestic drinking water delivery and distribution equipment and protective material safety evaluation standard, emphasizes that the vinyl chloride monomer is less than 1.0mg/Kg, and the lead content control standard is improved by 5 times.
Disclosure of Invention
The invention aims to provide an antibacterial PVC water supply pipe and a preparation method thereof, which realize the antibacterial and nontoxic performances of a PVC pipeline through the aspects of formula design and process control.
In order to achieve the purpose, the invention adopts the following technical scheme:
an antibiotic PVC feed pipe which is characterized in that: the paint comprises the following components of 90-130 parts of PVC, 20-50 parts of TPE, 1-3 parts of rare earth stabilizer, 0.5-1.5 parts of polyethylene wax, 0.5-6 parts of MBS2 and 0.5-1.5 parts of titanium dioxide.
As further improvement of the invention, the PVC composite material comprises 90 parts of PVC, 20 parts of TPE, 1 part of an olefinic soil stabilizer, 0.5 part of polyethylene wax, 2 parts of MBS and 0.5 part of titanium dioxide.
As a further improvement of the invention, the PVC material comprises 130 parts of PVC, 50 parts of TPE, 3 parts of an olefinic soil stabilizer, 1.5 parts of polyethylene wax, 6 parts of MBS and 1.5 parts of titanium dioxide.
As a further improvement of the invention, the PVC material comprises 110 parts of PVC, 40 parts of TPE, 2 parts of an olefinic soil stabilizer, 1 part of polyethylene wax, 4 parts of MBS and 1 part of titanium dioxide.
As a further improvement of the invention, the PVC monomer VCM residual amount is less than 5 mg/kg.
The preparation method of the antibacterial PVC water supply pipe is characterized by comprising the following steps:
1) and mixing raw materials: PVC, TPE, an olefin soil stabilizer, polyethylene wax, MBS and titanium dioxide are sequentially added into a high-speed mixer in proportion, the temperature is raised to 115-125 ℃, and then the material is cooled to 40-50 ℃ by a cold roller;
2) and extruding: adding the mixed raw materials into a double-screw extruder, compacting, smelting, mixing, homogenizing and then extruding, wherein the rotating speed of a main machine of the extruder is 22-26rpm, the torque of the main machine is 50%, the feeding rotating speed is 15-18rpm, the temperature of the main machine is set to be 180 +/-2 ℃ in a first section, 182 +/-2 ℃ in a second section, 178 +/-2 ℃ in a third section and 176 +/-2 ℃ in a fourth section;
3) and setting the pipe fitting: drawing the extruded pipeline to a vacuum shaping water tank for shaping and cooling, wherein the vacuum degree of the vacuum shaping water tank is 0.03 Mpa;
4) cutting and turning: and cutting the cooled pipeline according to a specified length, and turning and discharging the cut pipeline by using a turning frame to obtain the qualified pipeline.
As a further improvement of the invention, in the step 1), the cold roller machine cools the material to 40 ℃ and stores the material for 24 hours.
By controlling the formula and the process, the PVC pipeline meeting the national sanitary standard can be produced, other performances are further improved, and the aging resistance, the weather resistance and the strength are improved to a certain extent.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Selecting 90 parts of PVC, 20 parts of TPE, 1 part of rare earth stabilizer, 0.5 part of polyethylene wax, 2 parts of MBS and 0.5 part of titanium dioxide, adding the materials into a mixing machine, mixing and heating to 125 ℃, cooling to 50 ℃ through a cold roll machine, storing for 12 hours, adding the materials into an extruder, extruding, setting the rotating speed of a main engine of the extruder to be 24rpm, the torque of the main engine to be 50%, the feeding rotating speed to be 18rpm, setting the temperature of the main engine to be 180 +/-2 ℃ in a first section, 182 +/-2 ℃ in a second section, 178 +/-2 ℃ in a third section and 176 +/-2 ℃ in a fourth section, and carrying out vacuum shaping, cooling and cutting after extrusion to obtain the product.
The product in the embodiment 1 has a longitudinal retraction rate of 3.2 percent and a detection method of GB/T6671-2001; the density is 1.35 g/cm3, the Vicat softening point is 86 ℃, the content of vinyl chloride monomer is 0.081 mg/kg, and the extraction values of lead, tin, cadmium and mercury are all less than 0.01 m mg/l.
The product meets the national sanitary performance standard, and all indexes meet the design and construction requirements.
Example 2
Selecting 130 parts of PVC, 50 parts of TPE, 3 parts of rare earth stabilizer, 1.5 parts of polyethylene wax, 6 parts of MBS and 1.5 parts of titanium dioxide, adding the materials into a mixing machine, mixing and heating to 115 ℃, cooling to 45 ℃ through a cold roll machine, storing for 24 hours, adding the materials into an extruder, extruding, setting the rotating speed of a main machine of the extruder to be 22rpm, the torque of the main machine to be 50%, the feeding rotating speed to be 16rpm, setting the temperature of the main machine to be 180 +/-2 ℃ in a first section, 182 +/-2 ℃ in a second section, 178 +/-2 ℃ in a third section and 176 +/-2 ℃ in a fourth section, and carrying out vacuum shaping, cooling and cutting after extrusion to obtain the product.
The product in the embodiment 2 has a longitudinal retraction rate of 3.4 percent and a detection method of GB/T6671-2001; the density is 1.42 g/cm3, the Vicat softening point is 88 ℃, the content of vinyl chloride monomer is 0.076mg/kg, and the extraction values of lead, tin, cadmium and mercury are all less than 0.008 m mg/l.
The pipeline in the embodiment has excellent resilience performance, long service life and stronger pressure-resistant and explosion-proof functions, and meets the requirements of most occasions.
Example 3
Selecting 110 parts of PVC, 40 parts of TPE, 2 parts of rare earth stabilizer, 1 part of polyethylene wax, 4 parts of MBS and 1 part of titanium dioxide, sequentially adding the materials into a high-speed mixer in proportion, heating to 125 ℃, cooling the materials to 50 ℃ by a cold roll machine, adding the mixed raw materials into a double-screw extruder, compacting, smelting, mixing and homogenizing, extruding, setting the rotating speed of a main machine of the extruder to be 24rpm, the torque of the main machine to be 50%, the feeding rotating speed to be 18rpm, setting the temperature of the main machine to be 180 +/-2 ℃ in a first section, 182 +/-2 ℃ in a second section, 178 +/-2 ℃ in a third section and 176 +/-2 ℃ in a fourth section, drawing the extruded pipeline into a vacuum shaping water tank for shaping and cooling, setting the vacuum degree of the vacuum shaping water tank to be 0.03MPa, cutting the cooled pipeline according to a specified length, and turning and discharging the cut pipeline by using a turning frame to obtain a qualified pipeline.
The product in the embodiment 3 has a longitudinal retraction rate of 3.6 percent and a detection method of GB/T6671-2001; the density is 1.4 g/cm3, the Vicat softening point is 87 ℃, the content of vinyl chloride monomer is 0.065mg/kg, and the extraction values of lead, tin, cadmium and mercury are all less than 0.009 m mg/l.
The tensile strength of the pipe is 52MPa, the strength is more excellent than that of the common pipe, and the weather resistance and the ageing resistance are further improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. An antibiotic PVC feed pipe which is characterized in that: the paint comprises the following components of 90-130 parts of PVC, 20-50 parts of TPE, 1-3 parts of rare earth stabilizer, 0.5-1.5 parts of polyethylene wax, 0.5-6 parts of MBS2 and 0.5-1.5 parts of titanium dioxide.
2. The antibacterial PVC water supply pipe according to claim 1, characterized in that: the PVC material comprises, by weight, 90 parts of PVC, 20 parts of TPE, 1 part of an olefin soil stabilizer, 0.5 part of polyethylene wax, 2 parts of MBS and 0.5 part of titanium dioxide.
3. The antibacterial PVC water supply pipe according to claim 1, characterized in that: 130 parts of PVC, 50 parts of TPE, 3 parts of an olefin soil stabilizer, 1.5 parts of polyethylene wax, 6 parts of MBS and 1.5 parts of titanium dioxide.
4. The antibacterial PVC water supply pipe according to claim 1, characterized in that: 110 parts of PVC, 40 parts of TPE, 2 parts of an olefin soil stabilizer, 1 part of polyethylene wax, 4 parts of MBS and 1 part of titanium dioxide.
5. The antibacterial PVC water supply pipe according to any one of claims 1 to 4, characterized in that: the residual quantity of the PVC monomer VCM is less than 5 mg/kg.
6. The preparation method of the antibacterial PVC water supply pipe is characterized by comprising the following steps:
1) and mixing raw materials: PVC, TPE, an olefin soil stabilizer, polyethylene wax, MBS and titanium dioxide are sequentially added into a high-speed mixer in proportion, the temperature is raised to 115-125 ℃, and then the material is cooled to 40-50 ℃ by a cold roller;
2) and extruding: adding the mixed raw materials into a double-screw extruder, compacting, smelting, mixing, homogenizing and then extruding, wherein the rotating speed of a main machine of the extruder is 22-26rpm, the torque of the main machine is 50%, the feeding rotating speed is 15-18rpm, the temperature of the main machine is set to be 180 +/-2 ℃ in a first section, 182 +/-2 ℃ in a second section, 178 +/-2 ℃ in a third section and 176 +/-2 ℃ in a fourth section;
3) and setting the pipe fitting: drawing the extruded pipeline to a vacuum shaping water tank for shaping and cooling, wherein the vacuum degree of the vacuum shaping water tank is 0.03 Mpa;
4) cutting and turning: and cutting the cooled pipeline according to a specified length, and turning and discharging the cut pipeline by using a turning frame to obtain the qualified pipeline.
7. The antibacterial PVC water supply pipe according to claim 6, characterized in that: and (3) cooling the material to 40 ℃ by using the cold roller in the step 1), and storing for 24 hours.
CN202010625060.8A 2020-07-02 2020-07-02 Antibacterial PVC water supply pipe and preparation method thereof Pending CN113881157A (en)

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CN202010625060.8A CN113881157A (en) 2020-07-02 2020-07-02 Antibacterial PVC water supply pipe and preparation method thereof

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Application Number Priority Date Filing Date Title
CN202010625060.8A CN113881157A (en) 2020-07-02 2020-07-02 Antibacterial PVC water supply pipe and preparation method thereof

Publications (1)

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CN113881157A true CN113881157A (en) 2022-01-04

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060189731A1 (en) * 2003-07-10 2006-08-24 Stephane Girois Stabilizing composition for chlorine-containing polymers
CN102863712A (en) * 2011-07-06 2013-01-09 中国石油化工股份有限公司 High shock resistant PVC tubular product and preparation method thereof
CN104710710A (en) * 2015-03-23 2015-06-17 苏州市神龙门窗有限公司 Environment-friendly PVC plastic door/window profile and preparation method thereof
CN105860337A (en) * 2016-04-21 2016-08-17 安徽华宇管道制造有限公司 Preparation method of rigid PVC (polyvinyl chloride) water supply pipe
CN107325428A (en) * 2016-04-28 2017-11-07 浙江光通塑业有限公司 A kind of PVC and preparation method thereof
CN108219326A (en) * 2018-04-03 2018-06-29 马鞍山顾地塑胶有限公司 A kind of high impact PVC pipe formula and preparation method thereof
CN109438873A (en) * 2018-10-25 2019-03-08 福建亚通新材料科技股份有限公司 A kind of impact-resistant modified polyvinyl chloride draining sewage pipe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060189731A1 (en) * 2003-07-10 2006-08-24 Stephane Girois Stabilizing composition for chlorine-containing polymers
CN102863712A (en) * 2011-07-06 2013-01-09 中国石油化工股份有限公司 High shock resistant PVC tubular product and preparation method thereof
CN104710710A (en) * 2015-03-23 2015-06-17 苏州市神龙门窗有限公司 Environment-friendly PVC plastic door/window profile and preparation method thereof
CN105860337A (en) * 2016-04-21 2016-08-17 安徽华宇管道制造有限公司 Preparation method of rigid PVC (polyvinyl chloride) water supply pipe
CN107325428A (en) * 2016-04-28 2017-11-07 浙江光通塑业有限公司 A kind of PVC and preparation method thereof
CN108219326A (en) * 2018-04-03 2018-06-29 马鞍山顾地塑胶有限公司 A kind of high impact PVC pipe formula and preparation method thereof
CN109438873A (en) * 2018-10-25 2019-03-08 福建亚通新材料科技股份有限公司 A kind of impact-resistant modified polyvinyl chloride draining sewage pipe

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