CN111421932A - Anti-scaling plastic pipe with far infrared radiation function and preparation method thereof - Google Patents

Anti-scaling plastic pipe with far infrared radiation function and preparation method thereof Download PDF

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CN111421932A
CN111421932A CN202010316050.6A CN202010316050A CN111421932A CN 111421932 A CN111421932 A CN 111421932A CN 202010316050 A CN202010316050 A CN 202010316050A CN 111421932 A CN111421932 A CN 111421932A
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far infrared
parts
infrared radiation
scaling
layer
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雷钢强
宋锵
彭云
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Tianjin Weixing New Building Materials Co ltd
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Tianjin Weixing New Building Materials Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
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    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
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    • B32—LAYERED PRODUCTS
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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    • 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C2948/92—Measuring, controlling or regulating
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    • B29C2948/92—Measuring, controlling or regulating
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
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    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • B29L2023/22—Tubes or pipes, i.e. rigid
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    • B32B2250/24—All layers being polymeric
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    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
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Abstract

The invention is a kind of anti-scaling plastic tubing with far infrared radiation function and its preparation method; the pipe comprises a far infrared radiation layer, a polyolefin resin layer and an anti-scaling layer which are arranged from outside to inside in sequence; the far infrared radiation layer is formed by extruding far infrared radiation composite materials; the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 1-10 parts of functional master batch; the polyolefin resin layer is formed by extrusion molding of a heat-resistant polyethylene material; the anti-scaling layer is formed by extruding an anti-scaling composite material; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 1-10 parts of fluorine-containing organic silicon modified PE master batch. The preparation method adopts three extruders to carry out three-layer co-extrusion, and the anti-scaling plastic pipe with the far infrared radiation function is obtained after vacuum sizing, cooling and shaping. The invention overcomes the problems of easy scaling of the inner wall of the existing polyolefin pipeline and low heat radiation efficiency.

Description

Anti-scaling plastic pipe with far infrared radiation function and preparation method thereof
Technical Field
The invention relates to the technical field of functional plastic pipes and preparation, in particular to an anti-scaling plastic pipe with a far infrared radiation function and a preparation method thereof.
Background
The low-temperature floor radiant heating is generally applied to climate regulation of a building system by virtue of the advantages of uniform temperature distribution, space saving, comfortable body feeling and the like, and is particularly widely applied to the terminal heating market of the building system.
However, after the floor heating pipe is used for a plurality of heating seasons, a large amount of slime, bacteria and scale are generated in the pipe and attached to the inner wall of the pipe to form pipe blockage, so that water circulation is not smooth, heat dissipation is not enough, and heating temperature and effect are seriously affected; on the other hand, because the heat conductivity coefficient of the floor heating pipeline is low, the heat transfer is slow, the heat exchange efficiency is low, a large amount of heat energy can be wasted on the water supply and return pipeline, and effective heat radiation transfer is not formed at the tail end (ground). Therefore, the two situations are energy waste and inefficient use for floor radiant heating, and the health comfort of floor radiant heating is greatly influenced.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides the anti-scaling plastic pipe with the far infrared radiation function and the preparation method thereof, which can form a hydrophobic protective layer on the surface of the inner wall of the pipeline by adopting a material with low surface energy, reduce the adhesive force of biological sludge on the material of the inner wall of the pipeline and fundamentally solve the scaling problem; meanwhile, the functional material with high far infrared emissivity is adopted, the far infrared thermal radiation energy proportion of the floor heating system is increased, the far infrared radiation which is more beneficial to the absorption of human body wave bands is increased, the human body has higher body sensing temperature and better comfortable sensation, the heating requirement of people is met under the condition that higher water temperature is not needed, and therefore the purposes of reducing consumption and saving energy are achieved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an anti scale deposit plastics tubular product with far infrared radiation function, includes the far infrared radiation layer, polyolefin resin layer and the anti scale deposit layer that set gradually from outside to inside, the thickness ratio on far infrared radiation layer, polyolefin resin layer and the anti scale deposit layer is: 1: 8: 1;
the far infrared radiation layer is formed by extruding far infrared radiation composite materials; the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 1-10 parts of functional master batch; wherein the functional master batch comprises 0.2-4 parts of graphene, 1-10 parts of graphite powder, 1-9 parts of bamboo charcoal powder, 0.1-3 parts of tourmaline powder, 0.5-6 parts of carbon black powder, 0.5-6 parts of far infrared ceramic powder, 0.1-3 parts of carbon nano tube and 0.1-3 parts of coupling agent;
the polyolefin resin layer is formed by extrusion molding of a heat-resistant polyethylene material;
the anti-scaling layer is formed by extruding an anti-scaling composite material; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 1-10 parts of fluorine-containing organic silicon modified PE master batch.
Particularly, the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 2-8 parts of functional master batch; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 3-8 parts of fluorine-containing organic silicon modified PE master batch.
Particularly, the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 3-6 parts of functional master batch; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 4-8 parts of fluorine-containing organic silicon modified PE master batch.
The particle size range of the graphite powder of the functional master batch is 50-200 nm; the particle size range of the bamboo charcoal powder is 20-100 nm; the particle size range of the tourmaline powder is 50-500 nm; the particle size range of the carbon black powder is 50-600 nm; the grain size range of the far infrared ceramic powder is 50-800 nm;
the carbon nanotube is single-walled; the number of the layers of the graphene is 3-10, and the sheet diameter is 80-1000 nm;
the coupling agent is one or more of silane coupling agent, titanate, zirconate and aluminate.
The molecular weight of the ultra-high molecular weight polyethylene of the anti-scaling composite material is 150-300 ten thousand; the fluorine content in the fluorine-containing organosilicon modified PE master batch is 0.5-2%, and the silicon content is 5-10%.
The preparation method of the anti-scaling plastic pipe with the far infrared radiation function comprises the following specific steps:
adding the far infrared radiation composite material of the far infrared radiation layer into a first extruder;
uniformly stirring the heat-resistant polyethylene material of the polyolefin resin layer and adding the heat-resistant polyethylene material into a second extruder;
uniformly stirring the anti-scaling composite material of the anti-scaling layer and adding the anti-scaling composite material into a third extruder;
three extruders are adopted to carry out three-layer co-extrusion, and the anti-scaling plastic pipe with the far infrared radiation function is obtained after vacuum sizing, cooling and shaping.
The preparation method of the far infrared radiation composite material of the far infrared radiation layer comprises the following steps:
weighing the dried graphene, graphite powder, bamboo charcoal powder, tourmaline powder, carbon black powder, far infrared ceramic powder and carbon nano tubes according to the proportion, pouring the mixture into a high-speed stirrer, stirring for 15-20 minutes, adding a coupling agent dissolved in white oil into the high-speed stirrer according to the proportion, fully stirring for 20-30 minutes to obtain surface modified functional master batches, uniformly mixing the surface modified functional master batches and polyolefin resin by using an internal mixer, and then granulating by using a double-screw granulator at the temperature of 185-195 ℃, wherein the length-diameter ratio of the double-screw granulator is more than or equal to 40: 1, obtaining the far infrared radiation composite material.
The anti-scaling layer is extruded by adopting extensional rheology plasticization, equipment adopted by the extensional rheology plasticization extrusion is extensional rheology plasticization extrusion equipment with an eccentric rotor, the periodical change of the volume of a cavity is realized by the rotation of the eccentric rotor in a stator around a shaft, materials are brought in when the volume is increased, and the materials are compacted, plasticized and discharged when the volume is reduced.
The temperature of a cylinder of a first extruder of the far infrared radiation layer is 190-200 ℃, and the temperature of a die head is 200-210 ℃;
the cylinder temperature of the second extruder for the polyolefin resin layer is 185-195 ℃, and the die head temperature is 195-205 ℃;
the temperature of each section of the extensional rheology plasticizing extrusion equipment of the third extruder of the anti-scaling layer is 200-.
The production line speed in the preparation process is 10-20m/min, and the inner diameter of the neck ring die is 30-45 mm.
The invention has the beneficial effects that: the functional plastic pipe prepared by the invention obviously improves the emissivity of full-wavelength and segmented-wavelength far infrared rays at 30-60 ℃, has the emissivity of more than or equal to 0.87, can radiate 8-14 mu m of far infrared rays, just accords with the absorption wave band of a human body, forms resonance spontaneous heating with human body cells, and can improve the sensible temperature of a human body, thereby improving the indoor heating efficiency, the inner layer is added with a hydrophobic functional material, the pipe wall slime can be easily washed away in the floor heating operation process, the inner wall is not easy to scale, thereby reducing the floor heating cleaning frequency, improving the heat exchange efficiency and achieving the purpose of energy conservation; the method adopts blending extrusion and mainly changes the stretching flow, compared with the traditional screw extruder, the stretching flow plasticizing molding has the characteristics of weak shearing, controllable residence time, narrow residence time distribution, good mixing and dispersing performance, stronger high-viscosity system conveying capacity and better material performance maintenance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1-a far infrared radiation layer; 2-a polyolefin resin layer; 3-anti-scaling layer;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, an anti-scaling plastic pipe with far infrared radiation function comprises a far infrared radiation layer 1, a polyolefin resin layer 2 and an anti-scaling layer 3 which are arranged from outside to inside in sequence, wherein the thickness ratio of the far infrared radiation layer 1, the polyolefin resin layer 2 and the anti-scaling layer 3 is as follows: 1: 8: 1;
the far infrared radiation layer 1 is formed by extruding far infrared radiation composite materials; the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 1-10 parts of functional master batch; wherein the functional master batch comprises 0.2-4 parts of graphene, 1-10 parts of graphite powder, 1-9 parts of bamboo charcoal powder, 0.1-3 parts of tourmaline powder, 0.5-6 parts of carbon black powder, 0.5-6 parts of far infrared ceramic powder, 0.1-3 parts of carbon nano tube and 0.1-3 parts of coupling agent;
the polyolefin resin layer 2 is formed by extrusion molding of a heat-resistant polyethylene material;
the anti-scaling layer 3 is formed by extrusion molding of an anti-scaling composite material; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 1-10 parts of fluorine-containing organic silicon modified PE master batch.
Particularly, the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 2-8 parts of functional master batch; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 3-8 parts of fluorine-containing organic silicon modified PE master batch.
Particularly, the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 3-6 parts of functional master batch; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 4-8 parts of fluorine-containing organic silicon modified PE master batch.
The particle size range of the graphite powder of the functional master batch is 50-200 nm; the particle size range of the bamboo charcoal powder is 20-100 nm; the particle size range of the tourmaline powder is 50-500 nm; the particle size range of the carbon black powder is 50-600 nm; the grain size range of the far infrared ceramic powder is 50-800 nm;
the carbon nanotube is single-walled; the number of the layers of the graphene is 3-10, and the sheet diameter is 80-1000 nm;
the coupling agent is one or more of silane coupling agent, titanate, zirconate and aluminate.
The molecular weight of the ultra-high molecular weight polyethylene of the anti-scaling composite material is 150-300 ten thousand; the fluorine content in the fluorine-containing organosilicon modified PE master batch is 0.5-2%, and the silicon content is 5-10%.
The preparation method of the anti-scaling plastic pipe with the far infrared radiation function comprises the following specific steps:
adding the far infrared radiation composite material of the far infrared radiation layer 1 into a first extruder;
uniformly stirring the heat-resistant polyethylene material of the polyolefin resin layer 2 and adding the mixture into a second extruder;
uniformly stirring the anti-scaling composite material of the anti-scaling layer 3 and adding the mixture into a third extruder;
three extruders are adopted to carry out three-layer co-extrusion, and the anti-scaling plastic pipe with the far infrared radiation function is obtained after vacuum sizing, cooling and shaping.
The preparation method of the far infrared radiation composite material of the far infrared radiation layer 1 comprises the following steps:
weighing the dried graphene, graphite powder, bamboo charcoal powder, tourmaline powder, carbon black powder, far infrared ceramic powder and carbon nano tubes according to the proportion, pouring the mixture into a high-speed stirrer, stirring for 15-20 minutes, adding a coupling agent dissolved in white oil into the high-speed stirrer according to the proportion, fully stirring for 20-30 minutes to obtain surface modified functional master batches, uniformly mixing the surface modified functional master batches and polyolefin resin by using an internal mixer, and then granulating by using a double-screw granulator at the temperature of 185-195 ℃, wherein the length-diameter ratio of the double-screw granulator is more than or equal to 40: 1, obtaining the far infrared radiation composite material.
The anti-scaling layer 3 is extruded by adopting extensional rheology plasticization, the equipment adopted by the extensional rheology plasticization extrusion is extensional rheology plasticization extrusion equipment with an eccentric rotor, the periodical change of the cavity volume is realized by the rotation of the eccentric rotor in a stator around a shaft, the material is brought in when the volume is increased, and the material is compacted, plasticized and discharged when the volume is reduced.
The cylinder temperature of the first extruder of the far infrared radiation layer 1 is 190-200 ℃, and the die head temperature is 200-210 ℃;
the cylinder temperature of the second extruder for the polyolefin resin layer 2 is 185-195 ℃, and the die head temperature is 195-205 ℃;
the temperature of each section of the extensional rheology plasticizing extrusion equipment of the third extruder of the anti-scaling layer 3 is 200-.
The production line speed in the preparation process is 10-20m/min, and the inner diameter of the neck ring die is 30-45 mm.
Specific example 1:
the utility model provides an anti scale deposit plastics tubular product with far infrared radiation function, includes the far infrared radiation layer 1, polyolefin resin layer 2 and the anti scale deposit layer 3 that set gradually from outside to inside, the thickness ratio of far infrared radiation layer 1, polyolefin resin layer 2 and anti scale deposit layer 3 is: 1: 8: 1;
the far infrared radiation layer 1 is formed by extruding far infrared radiation composite materials; the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 3 parts of functional master batch;
the polyolefin resin layer 2 is formed by extrusion molding of a heat-resistant polyethylene material;
the anti-scaling layer 3 is formed by extrusion molding of an anti-scaling composite material; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 4 parts of fluorine-containing organic silicon modified PE master batch.
The melt flow ratio of the heat-resistant polyethylene is MFR1190 ℃, 10Kg, MFR2190 ℃, 2.16Kg & gt 6.
The ultra-high molecular weight polyethylene is produced by Shanghai chemical research institute, has a trade mark of SWG09, and has a molecular weight of 200-250 ten thousand.
The fluorine-containing organosilicon modified PE master batch is a commercial product, is an AF-600-1 type fluorine and silicon modified functional master batch produced by Zhejiang Jiahua refining Co., Ltd, and the base resin is HDPE, wherein the fluorine content is 0.5-2%, and the silicon content is 5-10%.
Adding the far infrared radiation composite material of the far infrared radiation layer 1 into a first extruder;
uniformly stirring the heat-resistant polyethylene material of the polyolefin resin layer 2 and adding the mixture into a second extruder;
uniformly stirring the anti-scaling composite material of the anti-scaling layer 3 and adding the mixture into a third extruder;
three extruders are adopted to carry out three-layer co-extrusion, and the anti-scaling plastic pipe with the far infrared radiation function is obtained after vacuum sizing, cooling and shaping.
The anti-scaling layer 3 adopts an extensional rheological extrusion device which is a testing machine of Guangdong Xingxi scientific and technological limited company.
Specific example 2:
the utility model provides an anti scale deposit plastics tubular product with far infrared radiation function, includes the far infrared radiation layer 1, polyolefin resin layer 2 and the anti scale deposit layer 3 that set gradually from outside to inside, the thickness ratio of far infrared radiation layer 1, polyolefin resin layer 2 and anti scale deposit layer 3 is: 1: 8: 1;
the far infrared radiation layer 1 is formed by extruding far infrared radiation composite materials; the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 4 parts of functional master batch;
the polyolefin resin layer 2 is formed by extrusion molding of a heat-resistant polyethylene material;
the anti-scaling layer 3 is formed by extrusion molding of an anti-scaling composite material; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 5 parts of fluorine-containing organic silicon modified PE master batch.
The melt flow ratio of the heat-resistant polyethylene is MFR1190 ℃, 10Kg, MFR2190 ℃, 2.16Kg & gt 6.
The ultra-high molecular weight polyethylene is produced by Shanghai chemical research institute, has a trade mark of SWG09, and has a molecular weight of 200-250 ten thousand.
The fluorine-containing organosilicon modified PE master batch is a commercial product, is an AF-600-1 type fluorine and silicon modified functional master batch produced by Zhejiang Jiahua refining Co., Ltd, and the base resin is HDPE, wherein the fluorine content is 0.5-2%, and the silicon content is 5-10%.
Adding the far infrared radiation composite material of the far infrared radiation layer 1 into a first extruder;
uniformly stirring the heat-resistant polyethylene material of the polyolefin resin layer 2 and adding the mixture into a second extruder;
uniformly stirring the anti-scaling composite material of the anti-scaling layer 3 and adding the mixture into a third extruder;
three extruders are adopted to carry out three-layer co-extrusion, and the anti-scaling plastic pipe with the far infrared radiation function is obtained after vacuum sizing, cooling and shaping.
The anti-scaling layer 3 adopts an extensional rheological extrusion device which is a testing machine of Guangdong Xingxi scientific and technological limited company.
Specific example 3:
the utility model provides an anti scale deposit plastics tubular product with far infrared radiation function, includes the far infrared radiation layer 1, polyolefin resin layer 2 and the anti scale deposit layer 3 that set gradually from outside to inside, the thickness ratio of far infrared radiation layer 1, polyolefin resin layer 2 and anti scale deposit layer 3 is: 1: 8: 1;
the far infrared radiation layer 1 is formed by extruding far infrared radiation composite materials; the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 5 parts of functional master batch;
the polyolefin resin layer 2 is formed by extrusion molding of a heat-resistant polyethylene material;
the anti-scaling layer 3 is formed by extrusion molding of an anti-scaling composite material; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 6 parts of fluorine-containing organic silicon modified PE master batch.
The melt flow ratio of the heat-resistant polyethylene is MFR1190 ℃, 10Kg, MFR2190 ℃, 2.16Kg & gt 6.
The ultra-high molecular weight polyethylene is produced by Shanghai chemical research institute, has a trade mark of SWG09, and has a molecular weight of 200-250 ten thousand.
The fluorine-containing organosilicon modified PE master batch is a commercial product, is an AF-600-1 type fluorine and silicon modified functional master batch produced by Zhejiang Jiahua refining Co., Ltd, and the base resin is HDPE, wherein the fluorine content is 0.5-2%, and the silicon content is 5-10%.
Adding the far infrared radiation composite material of the far infrared radiation layer 1 into a first extruder;
uniformly stirring the heat-resistant polyethylene material of the polyolefin resin layer 2 and adding the mixture into a second extruder;
uniformly stirring the anti-scaling composite material of the anti-scaling layer 3 and adding the mixture into a third extruder;
three extruders are adopted to carry out three-layer co-extrusion, and the anti-scaling plastic pipe with the far infrared radiation function is obtained after vacuum sizing, cooling and shaping.
The anti-scaling layer 3 adopts an extensional rheological extrusion device which is a testing machine of Guangdong Xingxi scientific and technological limited company.
Specific example 4:
the utility model provides an anti scale deposit plastics tubular product with far infrared radiation function, includes the far infrared radiation layer 1, polyolefin resin layer 2 and the anti scale deposit layer 3 that set gradually from outside to inside, the thickness ratio of far infrared radiation layer 1, polyolefin resin layer 2 and anti scale deposit layer 3 is: 1: 8: 1;
the far infrared radiation layer 1 is formed by extruding far infrared radiation composite materials; the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 6 parts of functional master batch;
the polyolefin resin layer 2 is formed by extrusion molding of a heat-resistant polyethylene material;
the anti-scaling layer 3 is formed by extrusion molding of an anti-scaling composite material; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 8 parts of fluorine-containing organic silicon modified PE master batch.
The melt flow ratio of the heat-resistant polyethylene is MFR1190 ℃, 10Kg, MFR2190 ℃, 2.16Kg & gt 6.
The ultra-high molecular weight polyethylene is produced by Shanghai chemical research institute, has a trade mark of SWG09, and has a molecular weight of 200-250 ten thousand.
The fluorine-containing organosilicon modified PE master batch is a commercial product, is an AF-600-1 type fluorine and silicon modified functional master batch produced by Zhejiang Jiahua refining Co., Ltd, and the base resin is HDPE, wherein the fluorine content is 0.5-2%, and the silicon content is 5-10%.
Adding the far infrared radiation composite material of the far infrared radiation layer 1 into a first extruder;
uniformly stirring the heat-resistant polyethylene material of the polyolefin resin layer 2 and adding the mixture into a second extruder;
uniformly stirring the anti-scaling composite material of the anti-scaling layer 3 and adding the mixture into a third extruder;
three extruders are adopted to carry out three-layer co-extrusion, and the anti-scaling plastic pipe with the far infrared radiation function is obtained after vacuum sizing, cooling and shaping.
The anti-scaling layer 3 adopts an extensional rheological extrusion device which is a testing machine of Guangdong Xingxi scientific and technological limited company.
The extrusion conditions of the extruder in any of the specific examples 1 to 4 are shown in Table 1:
TABLE 1
Figure BDA0002459480830000081
The pipes prepared in the specific examples 1 to 4 have a nominal outer diameter of 20mm and a nominal wall thickness of 2.0mm, and are subjected to normal total emissivity detection according to the GB/T7287-2008 method under the environmental conditions that the air temperature is 21.3 ℃ and the relative humidity is 60%, wherein the detection results are shown in Table 2:
TABLE 2
Figure BDA0002459480830000091
The test results show that the far infrared wavelength range of the sample is 8-14 μm, and the average value of the infrared total normal emissivity is 0.905 at the temperature of 35 ℃.
A plate is prepared according to the formulation proportion of the inner layer hydrophobic material in the specific examples 1 to 4, a contact angle test is carried out according to the method of GB/T30693-2014 under the environmental conditions that the air temperature is 22.5 ℃ and the relative humidity is 50%, and the detection results are shown in Table 3:
TABLE 3
Detecting items Example 1 Example 2 Example 3 Example 4 Mean value of
Contact angle 108.43° 108.81° 109.37° 109.86° 109.12°
According to the test results, the average value of the surface contact angle of the inner wall material is 109.12 degrees, which is far greater than the surface contact angle of the common PE-RT material, which is 99.89 degrees.
The PE-RT pipe prepared by the invention can be used in the heating process, the emissivity of full-wavelength and segmented-wavelength far infrared rays at 30-60 ℃ is obviously improved, the emissivity is not less than 0.87, the far infrared rays with the radiation of 8-14 mu m can exactly meet the absorption wave band of a human body, resonance spontaneous heating is formed with human body cells, the sensible temperature of the human body can be improved, the indoor heating efficiency is improved, the hydrophobic functional material is added in the inner layer, the pipe wall slime can be easily washed away in the floor heating operation process, the inner wall is not easy to scale, the floor heating cleaning frequency is reduced, the heat exchange efficiency is improved, and the purpose of energy saving is achieved; the method adopts blending extrusion and mainly changes the stretching flow, compared with the traditional screw extruder, the stretching flow plasticizing molding has the characteristics of weak shearing, controllable residence time, narrow residence time distribution, good mixing and dispersing performance, stronger high-viscosity system conveying capacity and better material performance maintenance.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and variations are within the scope of the invention.

Claims (10)

1. The utility model provides an anti scale deposit plastics tubular product with far infrared radiation function which characterized in that, includes far infrared radiation layer (1), polyolefin resin layer (2) and anti scale deposit layer (3) that set gradually from outside to inside, the thickness ratio of far infrared radiation layer (1), polyolefin resin layer (2) and anti scale deposit layer (3) is: 1: 8: 1;
the far infrared radiation layer (1) is formed by extruding far infrared radiation composite materials; the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 1-10 parts of functional master batch; wherein the functional master batch comprises 0.2-4 parts of graphene, 1-10 parts of graphite powder, 1-9 parts of bamboo charcoal powder, 0.1-3 parts of tourmaline powder, 0.5-6 parts of carbon black powder, 0.5-6 parts of far infrared ceramic powder, 0.1-3 parts of carbon nano tube and 0.1-3 parts of coupling agent;
the polyolefin resin layer (2) is formed by extrusion molding of a heat-resistant polyethylene material;
the anti-scaling layer (3) is formed by extrusion molding of an anti-scaling composite material; the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 1-10 parts of fluorine-containing organic silicon modified PE master batch.
2. The anti-scaling plastic pipe with far infrared radiation function as claimed in claim 1,
the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 2-8 parts of functional master batch;
the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 3-8 parts of fluorine-containing organic silicon modified PE master batch.
3. The anti-scaling plastic pipe with far infrared radiation function as claimed in claim 2,
the far infrared radiation composite material comprises the following components in parts by weight: 100 parts of heat-resistant polyethylene and 3-6 parts of functional master batch;
the anti-scaling composite material comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene and 4-8 parts of fluorine-containing organic silicon modified PE master batch.
4. The anti-scaling plastic pipe with far infrared radiation function as claimed in claim 1,
the particle size range of the graphite powder of the functional master batch is 50-200 nm; the particle size range of the bamboo charcoal powder is 20-100 nm; the particle size range of the tourmaline powder is 50-500 nm; the particle size range of the carbon black powder is 50-600 nm; the grain size range of the far infrared ceramic powder is 50-800 nm;
the carbon nanotube is single-walled; the number of the layers of the graphene is 3-10, and the sheet diameter is 80-1000 nm;
the coupling agent is one or more of silane coupling agent, titanate, zirconate and aluminate.
5. The anti-scaling plastic pipe with far infrared radiation function as claimed in claim 1, wherein the molecular weight of the ultra-high molecular weight polyethylene of the anti-scaling composite material is 150-300 ten thousand; the fluorine content in the fluorine-containing organosilicon modified PE master batch is 0.5-2%, and the silicon content is 5-10%.
6. A method for preparing the anti-scaling plastic pipe with the far infrared radiation function as claimed in any one of claims 1 to 5, is characterized by comprising the following specific steps:
adding the far infrared radiation composite material of the far infrared radiation layer (1) into a first extruder;
uniformly stirring the heat-resistant polyethylene material of the polyolefin resin layer (2) and adding the mixture into a second extruder;
uniformly stirring the anti-scaling composite material of the anti-scaling layer (3) and adding the mixture into a third extruder;
three extruders are adopted to carry out three-layer co-extrusion, and the anti-scaling plastic pipe with the far infrared radiation function is obtained after vacuum sizing, cooling and shaping.
7. The method for preparing the anti-scaling plastic pipe with far infrared radiation function according to claim 6,
the preparation method of the far infrared radiation composite material of the far infrared radiation layer (1) comprises the following steps:
weighing the dried graphene, graphite powder, bamboo charcoal powder, tourmaline powder, carbon black powder, far infrared ceramic powder and carbon nano tubes according to the proportion, pouring the mixture into a high-speed stirrer, stirring for 15-20 minutes, adding a coupling agent dissolved in white oil into the high-speed stirrer according to the proportion, fully stirring for 20-30 minutes to obtain surface modified functional master batches, uniformly mixing the surface modified functional master batches and polyolefin resin by using an internal mixer, and then granulating by using a double-screw granulator at the temperature of 185-195 ℃, wherein the length-diameter ratio of the double-screw granulator is more than or equal to 40: 1, obtaining the far infrared radiation composite material.
8. The method for preparing the anti-scaling plastic pipe with far infrared radiation function according to claim 7,
the anti-scaling layer (3) is extruded by adopting extensional rheology plasticization, equipment adopted by the extensional rheology plasticization extrusion is extensional rheology plasticization extrusion equipment with an eccentric rotor, the periodical change of the cavity volume is realized by the rotation of the eccentric rotor in a stator around a shaft, the material is brought in when the volume is increased, and the material is compacted, plasticized and discharged when the volume is reduced.
9. The method for preparing the anti-scaling plastic pipe with far infrared radiation function according to claim 8,
the cylinder temperature of the first extruder of the far infrared radiation layer (1) is 190-200 ℃, and the die head temperature is 200-210 ℃;
the cylinder temperature of the second extruder of the polyolefin resin layer (2) is 185-195 ℃, and the die head temperature is 195-205 ℃;
the temperature of each section of the extensional rheology plasticizing extrusion equipment of the third extruder of the anti-scaling layer (3) is 200-250 ℃, the rotating speed of a rotor is 20-150 r/min, and the rotating speed of a feeding machine is 20-100 r/min.
10. The method for preparing the anti-scaling plastic pipe with the far infrared radiation function as claimed in claim 9, wherein the production line speed in the preparation process is 10-20m/min, and the inner diameter of the die is 30-45 mm.
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CN112212083A (en) * 2020-10-12 2021-01-12 浙江爱康实业有限公司 Shading type anti-scale PE-RT composite pipe structure
CN112724521A (en) * 2020-12-28 2021-04-30 金发科技股份有限公司 Super-hydrophobic anti-scaling pipe and preparation method thereof
CN112944056A (en) * 2021-02-22 2021-06-11 临海伟星新型建材有限公司 Multifunctional polyethylene composite pipe for conveying liquid food and preparation method thereof
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CN113172948A (en) * 2021-04-29 2021-07-27 天津市伟星新型建材有限公司 Anti-scaling floor heating pipeline with high thermal conductivity and preparation method thereof
CN113357446A (en) * 2021-06-01 2021-09-07 天津市伟星新型建材有限公司 Self-cleaning floor heating pipeline and preparation method thereof
CN113357446B (en) * 2021-06-01 2023-09-29 天津市伟星新型建材有限公司 Self-cleaning floor heating pipeline and preparation method thereof
CN113292792A (en) * 2021-06-25 2021-08-24 华南理工大学 rPP/POE/nano-silica composite material and preparation method and application thereof
CN114179446A (en) * 2021-12-24 2022-03-15 天津市伟星新型建材有限公司 Long-acting oxygen-blocking floor heating pipeline with far infrared radiation function and preparation method thereof
CN114179446B (en) * 2021-12-24 2024-07-09 天津市伟星新型建材有限公司 Long-acting oxygen-blocking floor heating pipeline with far infrared radiation function and preparation method thereof

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