CN107353474A - A kind of compound interior SMD drip irrigation pipe of edge and preparation method thereof - Google Patents

A kind of compound interior SMD drip irrigation pipe of edge and preparation method thereof Download PDF

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Publication number
CN107353474A
CN107353474A CN201710571488.7A CN201710571488A CN107353474A CN 107353474 A CN107353474 A CN 107353474A CN 201710571488 A CN201710571488 A CN 201710571488A CN 107353474 A CN107353474 A CN 107353474A
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China
Prior art keywords
extruder
drip irrigation
real wall
area
irrigation pipe
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CN201710571488.7A
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Chinese (zh)
Inventor
王冲
冯厚军
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Dayu Water Saving Tianjin Co Ltd
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Dayu Water Saving Tianjin Co Ltd
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Priority to CN201710571488.7A priority Critical patent/CN107353474A/en
Publication of CN107353474A publication Critical patent/CN107353474A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers
    • 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
    • B32B1/08—Tubular products
    • 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
    • B32B27/06—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
    • B32B27/065—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 of foam
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/24—Layered products comprising a layer of synthetic resin characterised by the use of special additives using solvents or swelling agents
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/712—Weather resistant
    • 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
    • B32B2410/00—Agriculture-related articles
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
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    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
    • C08K2003/262—Alkali metal carbonates
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    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08L2203/14—Applications used for foams
    • 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
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    • C08L2207/00—Properties characterising the ingredient of the composition
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    • C08L2207/062—HDPE
    • C—CHEMISTRY; METALLURGY
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    • C08L2312/00—Crosslinking
    • 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
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
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    • Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion

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  • Soil Sciences (AREA)
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  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention discloses a kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer, foamed core layer and real wall outer layer, the foamed core layer to be arranged between the real wall internal layer and the real wall outer layer；The real wall internal layer and real wall outer layer include following composition according to mass percent：High density polyethylene (HDPE) 40% ~ 60%%, low density polyethylene (LDPE) 10% ~ 30%, LLDPE 10% ~ 30%, functional agglomerate 1% ~ 2%, black masterbatch 3% ~ 5%%；The foamed core layer includes following composition according to mass percent：High density polyethylene (HDPE) 60% ~ 80%, low density polyethylene (LDPE) 15% ~ 30%, AC foaming systems 2% ~ 4%, DCP cross-linking systems 0.5% ~ 1%, black masterbatch 3% ~ 5%；Present invention also offers the preparation method of the drip irrigation pipe, using invention increases the intensity of drip irrigation pipe, solves drip irrigation pipe and punches impermeable technical problem with tube wall at the increase water dropper water outlet frame of wall thickness.

Description

A kind of compound interior SMD drip irrigation pipe of edge and preparation method thereof
Technical field
The present invention relates to drip irrigation pipe field, especially a kind of compound interior SMD drip irrigation pipe of edge and preparation method thereof.
Background technology
Drip irrigation is to utilize the water dropper being arranged on final stage pipeline (being referred to as hollow billet), or makes integral drip irrigation zone with hollow billet (or drip irrigation pipe) uniformly and slowly instills the water inside pipeline in the soil of crop root zone with drops.In douche flow When larger, continuous tiny current moistening soil is formed.Hollow billet and douche are generally placed on ground, hollow billet and can also be poured water Device embedment below ground 30cm or so.The former is referred to as drip surface, and the latter is referred to as underground drip irrigation.Surface irrigation ensures that soil is wet Degree, hence it is evident that reduce the generation of pest and disease damage, the dosage of agricultural chemicals can be reduced in turn.Douche is embedded in underground, will not produce earth's surface footpath Stream, reduces the water content of topsoil, the region that drip emitter is moistened is spherical, the volume of humid region to greatest extent All greatly increased with surface area, to provide bigger space as root system hyperplasia diffusion absorption nutrition；Dripped using drip irrigation technique Filling has a water-saving 50%, volume increase 30%, the land utilization ratio of increase by 5%~7%, raising utilization rate of fertilizer to more than 50% it is excellent Point.
Drip irrigation pipe (band) product used in current domestic drip irrigation system is divided into two classes with wall thickness, and one kind is thin-walled multiplex The drip irrigation zone of type drip irrigation zone, i.e. below 0.4mm；One kind is heavy wall composite drip irrigation pipe, i.e. 0.4mm~1.0mm drip irrigation pipe.One As in the case of, more than 1.0mm drip irrigation pipe does not almost have commercially, its main cause on the one hand be wall thickness height, drip irrigation pipe Production material demand is more, and cost is high, and price is high, is on the other hand increase of the existing drilling forming technology with drip irrigation thickness of pipe wall, its The difficulty of drilling forming gradually rises, and more than 1.0mm drip irrigation pipe occurs that drip irrigation tube wall punches impermeable situation.
The content of the invention
The technical problems to be solved by the invention are exactly to be to be directed to above-mentioned deficiency of the prior art, there is provided a kind of compound Interior SMD drip irrigation pipe of edge and preparation method thereof.
In order to solve the above technical problems, first purpose of the present invention is to provide a kind of compound interior SMD drip irrigation pipe of edge, The technical scheme of use is：
A kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer, foamed core layer and real wall outer layer, the foamed core layer It is arranged between the real wall internal layer and the real wall outer layer；The real wall internal layer and real wall outer layer include according to mass percent Following composition：High density polyethylene (HDPE) 40%~60%%, low density polyethylene (LDPE) 10%~30%, LLDPE 10% ~30%, functional agglomerate 1%~2%, black masterbatch 3%~5%%；The foamed core layer according to mass percent include below into Part：High density polyethylene (HDPE) 60%~80%, low density polyethylene (LDPE) 15%~30%, AC foaming systems 2%~4%, DCP crosslinkeds It is 0.5%~1%, black masterbatch 3%~5%.
Further, the functional master batch is fluoropolymer additive PPA.
Further, the AC foaming systems are made up of azodicarbonamide, zinc oxide, zinc stearate, its mass ratio Example is 4：3：1.
Further, DCP crosslinking agents are made up of cumyl peroxide, calcium carbonate, sodium carbonate, and its mass ratio is 3： 1：1.
Further, the wall thickness of real wall internal layer be 0.15~0.2mm, the wall thickness of the real wall outer layer be 0.15~ 0.2mm, the wall thickness of the foamed core layer are 0.6~1.7mm.
Further, the interior edge water dropper of drip irrigation pipe for flat or column type water dropper, 3~6L/h of dripping end flow.
Second object of the present invention is to provide a kind of preparation method of the compound interior SMD drip irrigation pipe of edge, using following skill Art scheme：Including following preparation processes：
(1) example weighs the raw material of real wall internal layer and real wall outer layer respectively in mass ratio：40~60 parts of high density polyethylene (HDPE) is low 10~30 parts of density polyethylene, 10~30 parts of LLDPE, 1~2 part of functional agglomerate, 3~5 parts of black masterbatch；Mixed It is stand-by after uniform mixing 30min at 80 DEG C of material machine；
(2) the mixed uniformly real wall internal layer of the step (1) and real wall outer layer raw material are added in extruder one, extruded Machine one is delivered at co-extruding machine head by shearing, heating plasticizing, and wherein the technological temperature of the machine barrel of extruder one is 160~230 DEG C；
(3) example weighs AC foaming systems and DCP cross-linking systems respectively in mass ratio；Wherein AC foaming systems are 4~8%, DCP cross-linking systems are 1~2%, are uniformly granulated after mixing by single screw extrusion machine, are prepared into 2 times of concentration master batch, single spiral shell The technological temperature of bar extruder is 80~170 DEG C；Example weighs foamed core material in mass ratio：High density polyethylene (HDPE) 60~ 80%, low density polyethylene (LDPE) 15~30%, master batch 5~10% is concentrated, it is stand-by after batch mixer uniformly mixes 30min；
(4) the mixed uniformly foamed core layer of the step (3) is added in extruder two, in extruder two by being heated Plasticizing, extrusion, sizing, cooling, pelletizing, air-dried technique are delivered at co-extruding machine head, and the machine barrel technological temperature of extruder two is 100 ~170 DEG C；
(5) co-extruding machine head technological temperature is 190~210 DEG C, and co-extruding machine head extrusion tubular materials are sent into vacuum through traction The cooling of sizing tank sizing is cooled down, then after drilling forming machine punches at water dropper water outlet frame, compound interior edge is wound to obtain by winder Formula drip irrigation pipe.
Further, each section of design temperature of machine barrel of extruder one is the area of one machine barrel of extruder one in the step (2) For 160 DEG C, the area of one machine barrel of extruder two is 190 DEG C, and the area of one machine barrel of extruder three is 210 DEG C, and the area of one machine barrel of extruder four is 230 ℃。
Further, each section of design temperature of machine barrel of step (4) extruder two is 80 DEG C of one area of extruder barrel, The area of extruder barrel two is 110 DEG C, and the area of extruder barrel three is 130 DEG C, and the area of extruder barrel four is 140 DEG C, the area's temperature of head one Spend for 150 DEG C, the area of head two is 160 DEG C, and the area of head three is 170 DEG C.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is provided with real wall internal layer, real wall outer layer and foaming core Layer, the wall thickness of real wall internal layer can meet that the operating pressure of drip irrigation system requires, hot melt adhesion water dropper in drip irrigation pipe production process Requirement and drip irrigation pipe mechanization laying tension requirement；The low ratio foamed degree foamed core layer of crosslinking reduces more than 1.0mm drip irrigations The materials demand of pipe, while the coefficient of heat conduction of drip irrigation pipe intermediate layer material is reduced, improve the weatherability of drip irrigation pipe.
The foamed core layer that the present invention is provided with, the material hardness of drip irrigation pipe is reduced, solve increase of the drip irrigation pipe with wall thickness Tube wall punches impermeable agricultural technology problem at water dropper water outlet frame, while reduces the speed that perforating knife wears on drilling forming machine Degree.
The low ratio foamed degree foamed core layer for the crosslinking that the present invention is provided with, adds the transverse strength of drip irrigation tube material, solves Because drip irrigation pipe forms in traction draw direction higher machine-direction oriented, transverse strength is relatively low, viscous in flat water dropper and tube wall hot melt Connect periphery and form stress concentration, it is permanent in use, water dropper goes out with tube wall hot melt adhesion position in the larger area of day and night temperature The problem of now ftractureing.
Brief description of the drawings
Fig. 1 show the structural representation of compound systemic transferring；
In figure：1-real wall outer layer, 2-foamed core layer, 3-real wall internal layer, 4-interior edge water dropper.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment.It is it should be appreciated that described herein specific Embodiment only to explain the present invention, is not intended to limit the present invention.
Embodiment 1
A kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer 1, foamed core layer 2 and real wall outer layer 3, the foaming Sandwich layer 2 is arranged between the real wall internal layer 1 and the real wall outer layer 3；The real wall internal layer and real wall outer layer are according to quality hundred Divide than including following composition：High density polyethylene (HDPE) 40%, low density polyethylene (LDPE) 30%, LLDPE 24%, function Master batch 1%, black masterbatch 5%；The foamed core layer includes following composition according to mass percent：High density polyethylene (HDPE) 60% is low Density polyethylene 30%, AC foaming systems 2%, DCP cross-linking systems 1%, black masterbatch 5%；
Further, the functional master batch is fluoropolymer additive PPA.
Further, the AC foaming systems are made up of azodicarbonamide, zinc oxide, zinc stearate, its mass ratio Example is 4：3：1.
Further, DCP crosslinking agents are made up of cumyl peroxide, calcium carbonate, sodium carbonate, and its mass ratio is 3： 1：1.
Further, the wall thickness of real wall internal layer be 0.15~0.2mm, the wall thickness of the real wall outer layer be 0.15~ 0.2mm, the wall thickness of the foamed core layer are 0.6~1.7mm.
Further, the interior edge water dropper 4 of drip irrigation pipe is flat or column type water dropper, 3~6L/h of dripping end flow.
The above-mentioned compound interior SMD drip irrigation pipe its preparation method of edge：
(1) example weighs the raw material of real wall internal layer and real wall outer layer respectively in mass ratio, is uniformly mixed at 80 DEG C of batch mixer It is stand-by after 30min；
(2) the mixed uniformly real wall internal layer of the step (1) and real wall outer layer raw material are added in extruder one, extruded Machine one is delivered at co-extruding machine head by shearing, heating plasticizing, and wherein the technological temperature of the machine barrel of extruder one is 160~230 DEG C；
(3) example weighs AC foaming systems and DCP cross-linking systems respectively in mass ratio；Wherein AC foaming systems are 4%, DCP Cross-linking system is 1%, is uniformly granulated after mixing by single screw extrusion machine, is prepared into 2 times of concentration master batch, Single screw extrusion The technological temperature of machine is 80 DEG C；Example weighs foamed core material in mass ratio：High density polyethylene (HDPE) 60%, low density polyethylene (LDPE) 30%th, 5% part of master batch, 5% part of black masterbatch are concentrated；It is stand-by after batch mixer uniformly mixes 30min；
(4) uniformly mixing 3 adds in extruder two step (3), in extruder two by carrying out heating plasticizing, squeezing Go out, shape, cooling down, pelletizing, air-drying technique and be delivered at co-extruding machine head, the machine barrel technological temperature of extruder two is 100~170 ℃；
(5) co-extruding machine head technological temperature is 190~210 DEG C, and co-extruding machine head extrusion tubular materials are sent into vacuum through traction The cooling of sizing tank sizing is cooled down, then after drilling forming machine punches at water dropper water outlet frame, compound interior edge is wound to obtain by winder Formula drip irrigation pipe.
Further, each section of design temperature of the machine barrel of above-mentioned extruder one is that the area of one machine barrel of extruder one is 160 DEG C, is squeezed Go out the area of one machine barrel of machine two for 190 DEG C, the area of one machine barrel of extruder three is 210 DEG C, and the area of one machine barrel of extruder four is 230 DEG C；
Further, each section of design temperature of the machine barrel of above-mentioned extruder two is 80 DEG C of one area of extruder barrel, extruder The area of machine barrel two is 110 DEG C, and the area of extruder barrel three is 130 DEG C, and the area of extruder barrel four is 140 DEG C, and the area's temperature of head one is 150 DEG C, the area of head two is 160 DEG C, and the area of head three is 170 DEG C.
Embodiment 2
A kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer 1, foamed core layer 2 and real wall outer layer 3, the foaming Sandwich layer 2 is arranged between the real wall internal layer 1 and the real wall outer layer 3；The real wall internal layer and real wall outer layer are according to quality hundred Divide than including following composition：High density polyethylene (HDPE) 45%, low density polyethylene (LDPE) 18%, LLDPE 30%, function Master batch 2%, black masterbatch 3.5%；The foamed core layer includes following composition according to mass percent：High density polyethylene (HDPE) 64%, Low density polyethylene (LDPE) 23%, AC foaming systems 4%, DCP cross-linking systems 1%, black masterbatch 3%；
Further, the functional master batch is fluoropolymer additive PPA.
Further, the AC foaming systems are made up of azodicarbonamide, zinc oxide, zinc stearate, its mass ratio Example is 4：3：1.
Further, DCP crosslinking agents are made up of cumyl peroxide, calcium carbonate, sodium carbonate, and its mass ratio is 3： 1：1.
Further, the wall thickness of real wall internal layer be 0.15~0.2mm, the wall thickness of the real wall outer layer be 0.15~ 0.2mm, the wall thickness of the foamed core layer are 0.6~1.7mm.
Further, the interior edge water dropper of drip irrigation pipe for flat or column type water dropper, 3~6L/h of dripping end flow.
The above-mentioned compound interior SMD drip irrigation pipe its preparation method of edge：
(1) example weighs the raw material of real wall internal layer and real wall outer layer respectively in mass ratio, is uniformly mixed at 80 DEG C of batch mixer It is stand-by after 30min；
(2) the mixed uniformly real wall internal layer of the step (1) and real wall outer layer raw material are added in extruder one, extruded Machine one is delivered at co-extruding machine head by shearing, heating plasticizing, and wherein the technological temperature of the machine barrel of extruder one is 160~230 DEG C；
(3) example weighs AC foaming systems and DCP cross-linking systems respectively in mass ratio；Wherein AC foaming systems are 6%, DCP Cross-linking system is 2%, is uniformly granulated after mixing by single screw extrusion machine, is prepared into 2 times of concentration master batch, Single screw extrusion The technological temperature of machine is 100 DEG C；Example weighs foamed core material in mass ratio：High density polyethylene (HDPE) 64%, low density polyethylene (LDPE) 23%th, master batch 10%, black masterbatch 3% are concentrated；It is stand-by after batch mixer uniformly mixes 30min；
(4) the mixed uniformly foamed core layer raw material of the step (3) is added in extruder two, in extruder two by carrying out Heating plasticizing, extrusion, sizing, cooling, pelletizing, air-dried technique are delivered at co-extruding machine head, the machine barrel technological temperature of extruder two For 100~170 DEG C；
(5) co-extruding machine head technological temperature is 190~210 DEG C, and co-extruding machine head extrusion tubular materials are sent into vacuum through traction The cooling of sizing tank sizing is cooled down, then after drilling forming machine punches at water dropper water outlet frame, compound interior edge is wound to obtain by winder Formula drip irrigation pipe.
Further, each section of design temperature of the machine barrel of above-mentioned extruder one is that the area of one machine barrel of extruder one is 160 DEG C, is squeezed Go out the area of one machine barrel of machine two for 190 DEG C, the area of one machine barrel of extruder three is 210 DEG C, and the area of one machine barrel of extruder four is 230 DEG C.
Further, each section of design temperature of the machine barrel of above-mentioned extruder two is 80 DEG C of one area of extruder barrel, extruder The area of machine barrel two is 110 DEG C, and the area of extruder barrel three is 130 DEG C, and the area of extruder barrel four is 140 DEG C, and the area's temperature of head one is 150 DEG C, the area of head two is 160 DEG C, and the area of head three is 170 DEG C.
Embodiment 3
A kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer 1, foamed core layer 2 and real wall outer layer 3, the foaming Sandwich layer 2 is arranged between the real wall internal layer 1 and the real wall outer layer 3；The real wall internal layer and real wall outer layer are according to quality hundred Divide than including following composition：High density polyethylene (HDPE) 48%, low density polyethylene (LDPE) 26%, LLDPE 21%, function Master batch 1%, black masterbatch 4%；The foamed core layer includes following composition according to mass percent：High density polyethylene (HDPE) 68% is low Density polyethylene 20%, AC foaming systems 3%, DCP cross-linking systems 0.5%, black masterbatch 4%；
Further, the functional master batch is fluoropolymer additive PPA.
Further, the AC foaming systems are made up of azodicarbonamide, zinc oxide, zinc stearate, its mass ratio Example is 4：3：1.
Further, DCP crosslinking agents are made up of cumyl peroxide, calcium carbonate, sodium carbonate, and its mass ratio is 3： 1：1.
Further, the wall thickness of real wall internal layer be 0.15~0.2mm, the wall thickness of the real wall outer layer be 0.15~ 0.2mm, the wall thickness of the foamed core layer are 0.6~1.7mm.
Further, the interior edge water dropper of drip irrigation pipe for flat or column type water dropper, 3~6L/h of dripping end flow.
The above-mentioned compound interior SMD drip irrigation pipe its preparation method of edge：
(1) example weighs the raw material of real wall internal layer and real wall outer layer respectively in mass ratio, is uniformly mixed at 80 DEG C of batch mixer It is stand-by after 30min；
(2) the mixed uniformly real wall internal layer of the step (1) and real wall outer layer raw material are added in extruder one, extruded Machine one is delivered at co-extruding machine head by shearing, heating plasticizing, and wherein the technological temperature of the machine barrel of extruder one is 160~230 DEG C；
(3) example weighs AC foaming systems and DCP cross-linking systems respectively in mass ratio；Wherein AC foaming systems are 6%, DCP Cross-linking system is 2%, is uniformly granulated after mixing by single screw extrusion machine, is prepared into 2 times of concentration master batch, Single screw extrusion The technological temperature of machine is 120 DEG C；Example weighs foamed core material in mass ratio：High density polyethylene (HDPE) 68%, low density polyethylene (LDPE) 20%th, master batch 8%, black masterbatch 4% are concentrated；It is stand-by after batch mixer uniformly mixes 30min；
(4) the mixed uniformly foamed core layer raw material of the step (3) is added in extruder two, in extruder two by carrying out Heating plasticizing, extrusion, sizing, cooling, pelletizing, air-dried technique are delivered at co-extruding machine head, the machine barrel technological temperature of extruder two For 100~170 DEG C；
(5) co-extruding machine head technological temperature is 190~210 DEG C, and co-extruding machine head extrusion tubular materials are sent into vacuum through traction The cooling of sizing tank sizing is cooled down, then after drilling forming machine punches at water dropper water outlet frame, compound interior edge is wound to obtain by winder Formula drip irrigation pipe.
Further, each section of design temperature of the machine barrel of above-mentioned extruder one is that the area of one machine barrel of extruder one is 160 DEG C, is squeezed Go out the area of one machine barrel of machine two for 190 DEG C, the area of one machine barrel of extruder three is 210 DEG C, and the area of one machine barrel of extruder four is 230 DEG C；
Further, each section of design temperature of the machine barrel of above-mentioned extruder two is 80 DEG C of one area of extruder barrel, extruder The area of machine barrel two is 110 DEG C, and the area of extruder barrel three is 130 DEG C, and the area of extruder barrel four is 140 DEG C, and the area's temperature of head one is 150 DEG C, the area of head two is 160 DEG C, and the area of head three is 170 DEG C.
Embodiment 4
A kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer 1, foamed core layer 2 and real wall outer layer 3, the foaming Sandwich layer 2 is arranged between the real wall internal layer 1 and the real wall outer layer 3；The real wall internal layer and real wall outer layer are according to quality hundred Divide than including following composition：High density polyethylene (HDPE) 50%, low density polyethylene (LDPE) 20%, LLDPE 24%, function Master batch 2%, black masterbatch 4%；The foamed core layer includes following composition according to mass percent：High density polyethylene (HDPE) 72% is low Density polyethylene 15%, AC foaming systems 3.5%, DCP cross-linking systems 0.5%, black masterbatch 5%；
Further, the functional master batch is fluoropolymer additive PPA.
Further, the AC foaming systems are made up of azodicarbonamide, zinc oxide, zinc stearate, its mass ratio Example is 4：3：1.
Further, DCP crosslinking agents are made up of cumyl peroxide, calcium carbonate, sodium carbonate, and its mass ratio is 3： 1：1.
Further, the wall thickness of real wall internal layer be 0.15~0.2mm, the wall thickness of the real wall outer layer be 0.15~ 0.2mm, the wall thickness of the foamed core layer are 0.6~1.7mm.
Further, the interior edge water dropper of drip irrigation pipe for flat or column type water dropper, 3~6L/h of dripping end flow.
The above-mentioned compound interior SMD drip irrigation pipe its preparation method of edge：
(1) example weighs the raw material of real wall internal layer and real wall outer layer respectively in mass ratio, is uniformly mixed at 80 DEG C of batch mixer It is stand-by after 30min；
(2) the mixed uniformly real wall internal layer of the step (1) and real wall outer layer raw material are added in extruder one, extruded Machine one is delivered at co-extruding machine head by shearing, heating plasticizing, and wherein the technological temperature of the machine barrel of extruder one is 160~230 DEG C；
(3) example weighs AC foaming systems and DCP cross-linking systems respectively in mass ratio；Wherein AC foaming systems are 7%, DCP Cross-linking system is 1%, is uniformly granulated after mixing by single screw extrusion machine, is prepared into 2 times of concentration master batch, Single screw extrusion The technological temperature of machine is 140 DEG C；Example weighs foamed core material in mass ratio：High density polyethylene (HDPE) 72%, low density polyethylene (LDPE) 15%th, master batch 9%, black masterbatch 5% are concentrated；It is stand-by after batch mixer uniformly mixes 30min；
(4) the mixed uniformly foamed core layer of the step (3) is added in extruder two, in extruder two by being heated Plasticizing, extrusion, sizing, cooling, pelletizing, air-dried technique are delivered at co-extruding machine head, and the machine barrel technological temperature of extruder two is 100 ~170 DEG C；
(5) co-extruding machine head technological temperature is 190~210 DEG C, and co-extruding machine head extrusion tubular materials are sent into vacuum through traction The cooling of sizing tank sizing is cooled down, then after drilling forming machine punches at water dropper water outlet frame, compound interior edge is wound to obtain by winder Formula drip irrigation pipe.
Further, each section of design temperature of the machine barrel of above-mentioned extruder one is that the area of one machine barrel of extruder one is 160 DEG C, is squeezed Go out the area of one machine barrel of machine two for 190 DEG C, the area of one machine barrel of extruder three is 210 DEG C, and the area of one machine barrel of extruder four is 230 DEG C.
Further, each section of design temperature of the machine barrel of above-mentioned extruder two is 80 DEG C of one area of extruder barrel, extruder The area of machine barrel two is 110 DEG C, and the area of extruder barrel three is 130 DEG C, and the area of extruder barrel four is 140 DEG C, and the area's temperature of head one is 150 DEG C, the area of head two is 160 DEG C, and the area of head three is 170 DEG C.
Embodiment 5
A kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer 1, foamed core layer 2 and real wall outer layer 3, the foaming Sandwich layer 2 is arranged between the real wall internal layer 1 and the real wall outer layer 3；The real wall internal layer and real wall outer layer are according to quality hundred Divide than including following composition：High density polyethylene (HDPE) 55%, low density polyethylene (LDPE) 10%, LLDPE 27%, function Master batch 1%, black masterbatch 3%；The foamed core layer includes following composition according to mass percent：High density polyethylene (HDPE) 76% is low Density polyethylene 12%, AC foaming systems 3.5%, DCP cross-linking systems 0.5%, black masterbatch 4%；
Further, the functional master batch is fluoropolymer additive PPA.
Further, the AC foaming systems are made up of azodicarbonamide, zinc oxide, zinc stearate, its mass ratio Example is 4：3：1.
Further, DCP crosslinking agents are made up of cumyl peroxide, calcium carbonate, sodium carbonate, and its mass ratio is 3： 1：1.
Further, the wall thickness of real wall internal layer be 0.15~0.2mm, the wall thickness of the real wall outer layer be 0.15~ 0.2mm, the wall thickness of the foamed core layer are 0.6~1.7mm.
Further, the interior edge water dropper of drip irrigation pipe for flat or column type water dropper, 3~6L/h of dripping end flow.
The above-mentioned compound interior SMD drip irrigation pipe its preparation method of edge：
(1) example weighs the raw material of real wall internal layer and real wall outer layer respectively in mass ratio, is uniformly mixed at 80 DEG C of batch mixer It is stand-by after 30min；
(2) the mixed uniformly real wall internal layer of the step (1) and real wall outer layer raw material are added in extruder one, extruded Machine one is delivered at co-extruding machine head by shearing, heating plasticizing, and wherein the technological temperature of the machine barrel of extruder one is 160~230 DEG C；
(3) example weighs AC foaming systems and DCP cross-linking systems respectively in mass ratio；Wherein AC foaming systems are 7%, DCP Cross-linking system is 1%, is uniformly granulated after mixing by single screw extrusion machine, is prepared into 2 times of concentration master batch, Single screw extrusion The technological temperature of machine is 160 DEG C；Example weighs foamed core material in mass ratio：High density polyethylene (HDPE) 76%, low density polyethylene (LDPE) 12%th, master batch 8%, black masterbatch 4% are concentrated；It is stand-by after batch mixer uniformly mixes 30min；
(4) the mixed uniformly foamed core layer of the step (3) is added in extruder two, in extruder two by being heated Plasticizing, extrusion, sizing, cooling, pelletizing, air-dried technique are delivered at co-extruding machine head, and the machine barrel technological temperature of extruder two is 100 ~170 DEG C；
(5) co-extruding machine head technological temperature is 190~210 DEG C, and co-extruding machine head extrusion tubular materials are sent into vacuum through traction The cooling of sizing tank sizing is cooled down, then after drilling forming machine punches at water dropper water outlet frame, compound interior edge is wound to obtain by winder Formula drip irrigation pipe.
Further, each section of design temperature of the machine barrel of above-mentioned extruder one is that the area of one machine barrel of extruder one is 160 DEG C, is squeezed Go out the area of one machine barrel of machine two for 190 DEG C, the area of one machine barrel of extruder three is 210 DEG C, and the area of one machine barrel of extruder four is 230 DEG C.
Further, each section of design temperature of the machine barrel of above-mentioned extruder two is 80 DEG C of one area of extruder barrel, extruder The area of machine barrel two is 110 DEG C, and the area of extruder barrel three is 130 DEG C, and the area of extruder barrel four is 140 DEG C, and the area's temperature of head one is 150 DEG C, the area of head two is 160 DEG C, and the area of head three is 170 DEG C.
Embodiment 6
A kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer 1, foamed core layer 2 and real wall outer layer 3, the foaming Sandwich layer 2 is arranged between the real wall internal layer 1 and the real wall outer layer 3；The real wall internal layer and real wall outer layer are according to quality hundred Divide than including following composition：High density polyethylene (HDPE) 60%, low density polyethylene (LDPE) 25%, LLDPE 10%, function Master batch 2%, black masterbatch 3%；The foamed core layer includes following composition according to mass percent：High density polyethylene (HDPE) 80% is low Density polyethylene 10%, AC foaming systems 3%, DCP cross-linking systems 0.5%, black masterbatch 3%；
Further, the functional master batch is fluoropolymer additive PPA.
Further, the AC foaming systems are made up of azodicarbonamide, zinc oxide, zinc stearate, its mass ratio Example is 4：3：1.
Further, DCP crosslinking agents are made up of cumyl peroxide, calcium carbonate, sodium carbonate, and its mass ratio is 3： 1：1.
Further, the wall thickness of real wall internal layer be 0.15~0.2mm, the wall thickness of the real wall outer layer be 0.15~ 0.2mm, the wall thickness of the foamed core layer are 0.6~1.7mm.
Further, the interior edge water dropper of drip irrigation pipe for flat or column type water dropper, 3~6L/h of dripping end flow.
The above-mentioned compound interior SMD drip irrigation pipe its preparation method of edge：
(1) example weighs the raw material of real wall internal layer and real wall outer layer respectively in mass ratio, is uniformly mixed at 80 DEG C of batch mixer It is stand-by after 30min；
(2) the mixed uniformly real wall internal layer of the step (1) and real wall outer layer raw material are added in extruder one, extruded Machine one is delivered at co-extruding machine head by shearing, heating plasticizing, and wherein the technological temperature of the machine barrel of extruder one is 160~230 DEG C；
(3) example weighs AC foaming systems and DCP cross-linking systems respectively in mass ratio；Wherein AC foaming systems are 6%, DCP Cross-linking system is 1%, is uniformly granulated after mixing by single screw extrusion machine, is prepared into 2 times of concentration master batch, Single screw extrusion The technological temperature of machine is 170 DEG C；Example weighs foamed core material in mass ratio：High density polyethylene (HDPE) 80%, low density polyethylene (LDPE) 10%th, master batch 7%, black masterbatch 3% are concentrated；It is stand-by after batch mixer uniformly mixes 30min；
(4) the mixed uniformly foamed core layer raw material of the step (3) is added in extruder two, in extruder two by carrying out Heating plasticizing, extrusion, sizing, cooling, pelletizing, air-dried technique are delivered at co-extruding machine head, the machine barrel technological temperature of extruder two For 100~170 DEG C；
(5) co-extruding machine head technological temperature is 190~210 DEG C, and co-extruding machine head extrusion tubular materials are sent into vacuum through traction The cooling of sizing tank sizing is cooled down, then after drilling forming machine punches at water dropper water outlet frame, compound interior edge is wound to obtain by winder Formula drip irrigation pipe.
Further, each section of design temperature of the machine barrel of above-mentioned extruder one is that the area of one machine barrel of extruder one is 160 DEG C, is squeezed Go out the area of one machine barrel of machine two for 190 DEG C, the area of one machine barrel of extruder three is 210 DEG C, and the area of one machine barrel of extruder four is 230 DEG C；
Further, each section of design temperature of the machine barrel of above-mentioned extruder two is 80 DEG C of one area of extruder barrel, extruder The area of machine barrel two is 110 DEG C, and the area of extruder barrel three is 130 DEG C, and the area of extruder barrel four is 140 DEG C, and the area's temperature of head one is 150 DEG C, the area of head two is 160 DEG C, and the area of head three is 170 DEG C.
It is the discharge uniformity of the SMD drip irrigation pipe of compound interior edge produced by the present invention, normal temperature hydrostatic pressing, high temperature hydrostatic pressing, resistance to Drawing property foundation《GB/T 19812.3-2008 plastic water savings irrigate equipment internally-inlaid drip irrigation zone, band》Tested.Drip irrigation pipe The performance test results are as shown in Table 1：
The drip irrigation pipe the performance test results of table one
6 embodiments described above are only the preferred embodiment of the present invention, it is noted that for the art Those of ordinary skill for, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these change Enter and retouch and also should be regarded as protection scope of the present invention.

Claims (9)

1. a kind of compound interior SMD drip irrigation pipe of edge, including real wall internal layer, foamed core layer and real wall outer layer, the foamed core layer are set Put between the real wall internal layer and the real wall outer layer；The real wall internal layer and real wall outer layer according to mass percent include with Lower composition：High density polyethylene (HDPE) 40% ~ 60%%, low density polyethylene (LDPE) 10% ~ 30%, LLDPE 10% ~ 30%, function Master batch 1% ~ 2%, black masterbatch 3% ~ 5%%；The foamed core layer includes following composition according to mass percent：High density polyethylene (HDPE) 60% ~ 80%, low density polyethylene (LDPE) 15% ~ 30%, AC foaming systems 2% ~ 4%, DCP cross-linking systems 0.5% ~ 1%, black masterbatch 3% ~ 5%.
2. the compound interior SMD drip irrigation pipe of edge according to claim 1, it is characterised in that：The functional master batch is fluorine-containing poly- Compound processing aid PPA.
3. the compound interior SMD drip irrigation pipe of edge according to claim 1, it is characterised in that：The AC foaming systems are by azo Diformamide, zinc oxide, zinc stearate composition, its mass ratio are 4：3：1.
4. the compound interior SMD drip irrigation pipe of edge according to claim 1, it is characterised in that：DCP crosslinking agents are by peroxidating two Isopropylbenzene, calcium carbonate, sodium carbonate composition, its mass ratio are 3：1：1.
5. the compound interior SMD drip irrigation pipe of edge according to claim 1, it is characterised in that：The wall thickness of real wall internal layer is 0.15 ~ 0.2mm, the wall thickness of the real wall outer layer are 0.15 ~ 0.2mm, the wall thickness of the foamed core layer is 0.6 ~ 1.7mm.
6. the compound interior SMD drip irrigation pipe of edge according to claim 1, it is characterised in that：The interior edge water dropper of drip irrigation pipe is Flat or column type water dropper, 3 ~ 6L/h of dripping end flow.
A kind of 7. compound interior SMD drip irrigation tube preparation method of edge, it is characterised in that：Comprise the following steps：
Example weighs the raw material of real wall internal layer and real wall outer layer respectively in mass ratio, at 80 DEG C of batch mixer uniformly after mixing 30min It is stand-by；
（2）By the step（1）Mixed uniformly real wall internal layer and real wall outer layer raw material are added in extruder one, in extruder one It is delivered to by shearing, heating plasticizing at co-extruding machine head, wherein the technological temperature of the machine barrel of extruder one is 160 ~ 230 DEG C；
（3）Example weighs AC foaming systems and DCP cross-linking systems respectively in mass ratio；Wherein AC foaming systems are crosslinked for 4 ~ 8%, DCP System is 1 ~ 2%, is uniformly granulated after mixing by single screw extrusion machine, is prepared into 2 times of concentration master batch, single screw extrusion machine Technological temperature be 80 ~ 170 DEG C；Example weighs foamed core material in mass ratio：High density polyethylene (HDPE) 60 ~ 80%, low density polyethylene Alkene 15 ~ 30%, master batch 5 ~ 10% is concentrated, it is stand-by after batch mixer uniformly mixes 30min；
（4）The step（3）Mixed uniformly foamed core layer is added in extruder two, in extruder two by carrying out heating modeling Change, extrusion, sizing, cooling, pelletizing, air-dry technique and be delivered at co-extruding machine head, the machine barrel technological temperature of extruder two for 100 ~ 170℃；
（5）Co-extruding machine head technological temperature is 190 ~ 210 DEG C, and co-extruding machine head extrusion tubular materials are determined through traction feeding vacuum cooled Footpath case sizing cooling, then after drilling forming machine punches at water dropper water outlet frame, compound internally-inlaid drip irrigation is wound to obtain by winder Pipe.
8. the compound interior SMD drip irrigation tube preparation method of edge according to claim 7, it is characterised in that：The step（2） Each section of design temperature of machine barrel of middle extruder one is that the area of one machine barrel of extruder one is 160 DEG C, and the area of one machine barrel of extruder two is 190 DEG C, the area of one machine barrel of extruder three is 210 DEG C, and the area of one machine barrel of extruder four is 230 DEG C.
9. the compound interior SMD drip irrigation tube preparation method of edge according to claim 7, it is characterised in that：The step（4） Each section of design temperature of machine barrel of extruder two is 80 DEG C of one area of extruder barrel, and the area of extruder barrel two is 110 DEG C, extruder machine 3rd area of cylinder are 130 DEG C, and the area of extruder barrel four is 140 DEG C, and the area's temperature of head one is 150 DEG C, and the area of head two is 160 DEG C, head 3rd area are 170 DEG C.
CN201710571488.7A 2017-07-13 2017-07-13 A kind of compound interior SMD drip irrigation pipe of edge and preparation method thereof Pending CN107353474A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111616025A (en) * 2020-06-09 2020-09-04 山东长江节水灌溉科技有限公司 Inclined seam compensation type drip infiltration pipe belt with internal embedded elastomer sleeve strip and preparation method thereof
CN111616026A (en) * 2020-06-09 2020-09-04 山东长江节水灌溉科技有限公司 Thin-wall drip infiltration belt with cylindrical drippers embedded in composite material and manufacturing method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2751539Y (en) * 2004-09-23 2006-01-18 杨凌秦川节水灌溉设备工程有限公司 Three-layer Co-squeezing drop irrigation pipe
CN103113653A (en) * 2013-02-06 2013-05-22 常州大学 HDPE (high-density polyethylene)/LDPE (low-density polyethylene) blended foam material and preparation method thereof
CN106117759A (en) * 2016-08-18 2016-11-16 大禹节水（天津）有限公司 Edge paster drip irrigation zone and preparation method thereof in a kind of double water dropper formula

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2751539Y (en) * 2004-09-23 2006-01-18 杨凌秦川节水灌溉设备工程有限公司 Three-layer Co-squeezing drop irrigation pipe
CN103113653A (en) * 2013-02-06 2013-05-22 常州大学 HDPE (high-density polyethylene)/LDPE (low-density polyethylene) blended foam material and preparation method thereof
CN106117759A (en) * 2016-08-18 2016-11-16 大禹节水（天津）有限公司 Edge paster drip irrigation zone and preparation method thereof in a kind of double water dropper formula

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111616025A (en) * 2020-06-09 2020-09-04 山东长江节水灌溉科技有限公司 Inclined seam compensation type drip infiltration pipe belt with internal embedded elastomer sleeve strip and preparation method thereof
CN111616026A (en) * 2020-06-09 2020-09-04 山东长江节水灌溉科技有限公司 Thin-wall drip infiltration belt with cylindrical drippers embedded in composite material and manufacturing method thereof
CN111616025B (en) * 2020-06-09 2021-10-22 山东长江节水灌溉科技有限公司 Inclined seam compensation type drip infiltration pipe belt with internal embedded elastomer sleeve strip and preparation method thereof

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