CN108390327A - A kind of FRPVC co-extrusions electric power protecting pipe - Google Patents

A kind of FRPVC co-extrusions electric power protecting pipe Download PDF

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Publication number
CN108390327A
CN108390327A CN201810195663.1A CN201810195663A CN108390327A CN 108390327 A CN108390327 A CN 108390327A CN 201810195663 A CN201810195663 A CN 201810195663A CN 108390327 A CN108390327 A CN 108390327A
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CN
China
Prior art keywords
electric power
stabilizer
protecting pipe
power protecting
frpvc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810195663.1A
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Chinese (zh)
Inventor
周云全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Xiao Yang New Mstar Technology Ltd
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Sichuan Xiao Yang New Mstar Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Xiao Yang New Mstar Technology Ltd filed Critical Sichuan Xiao Yang New Mstar Technology Ltd
Publication of CN108390327A publication Critical patent/CN108390327A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • 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
    • B32B27/08—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 synthetic resin
    • 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
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/04—Installations of electric cables or lines in or on the ground or water in surface ducts; Ducts or covers therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2307/558—Impact strength, toughness
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • 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
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention discloses a kind of FRPVC co-extrusions electric power protecting pipes, the electric power protecting pipe is using the first mixed raw material as inside and outside two layers, using made of prilling, contain the second mixing granulation of glass fibre as the interlayer between inside and outside two layers, be made through coextrusion mold.The interlayer of second mixing granulation is clipped in inside and outside two interlayer of the first mixed raw material by the present invention by way of coextrusion mold, avoids the second mixing granulation and its glass fibre is exposed outside, to improve pipe bonding ability.

Description

A kind of FRPVC co-extrusions electric power protecting pipe
Technical field
The present invention relates to electric power protecting pipe field, specifically a kind of FRPVC co-extrusions electric power protecting pipe.
Background technology
Conventional electric power protecting pipe is mostly fiberglass, CPVC, MPP material electric power protecting pipe, although this fiberglass, CPVC Electric power protecting pipe has preferable flame retardant property, and fiberglass electric power protecting pipe has good ring stiffness, still, first, glass Fiberglass on steel electric power protecting pipe is unfavorable for recycling, and pollutes environment, and the production cost of CPVC, MPP electric power protecting pipe is high；Its Two, the fiberglass open ground of traditional fiberglass electric power protecting pipe is arranged on the periphery of entire protecting pipe, influences fiberglass electricity The bonding of power protecting pipe.
Invention content
It is an object of the invention to：In view of the above shortcomings of the prior art, a kind of general by way of coextrusion mold is provided The interlayer of second mixing granulation is clipped in inside and outside two interlayer of the first mixed raw material, avoids the second mixing granulation and its glass fibers Tie up it is exposed outside, to improve the FRPVC co-extrusion electric power protecting pipes of pipe bonding ability.It not only increases protecting pipe Ring stiffness is high, has flame retardant property, product cost low, but also can recycle, environmental protection.
The technical solution adopted by the present invention is a kind of FRPVC co-extrusions electric power protecting pipe, and the electric power protecting pipe is mixed with first Close raw material as inside and outside two layers, using made of prilling, contain the second mixing granulation of glass fibre as inside and outside two Interlayer between layer is made through coextrusion mold.
Described inside and outside two layers and it is two layers inside and outside between interlayer pass through the common extrusion molding of extruder, wherein one squeeze Go out machine to squeeze out inside and outside two layers using the first mixed raw material, another extruder squeezes out interlayer using the second mixing granulation.
Preferably, the extruder is cone double screw extruder.
First mixed raw material is made of dual-screw pelletizer.
Second mixing granulation of the prilling manufacture is made of dual-screw pelletizer.
First mixed raw material is made of following materials in percentage by mass：
Preferably, the stabilizer of first mixed raw material selects lead salt stabilizer, metal soap stabilizer, organotin steady Determine at least one of agent, organic antimony stabilizer, rare-earth stabilizer, phosphite, epoxy type stabilizers.
Second mixing granulation is made of following materials in percentage by mass：
Preferably, the stabilizer of second mixing granulation selects lead salt stabilizer, metal soap stabilizer, organotin steady Determine at least one of agent, organic antimony stabilizer, rare-earth stabilizer, phosphite, epoxy type stabilizers.
The beneficial effects of the invention are as follows：
1. the interlayer of the second mixing granulation is clipped in the inside and outside of the first mixed raw material by the present invention by way of coextrusion mold Two interlayers, avoid the second mixing granulation and its glass fibre is exposed outside, to improve pipe bonding ability.
2. in the present invention, by adding the interlayer of the second mixing granulation, not only increasing the ring stiffness of protecting pipe, there is resistance It is low to fire performance, product cost, but also can recycle, environmental protection.
Description of the drawings
The present invention will be further described below with reference to the drawings.
Fig. 1 is the sectional view of the present invention.
Code name meaning in figure：1-internal layer；2-outer layers；3-interlayers.
Specific implementation mode
It is shown in Figure 1：The present invention is a kind of FRPVC co-extrusions electric power protecting pipe, and the electric power protecting pipe is with the first mixing Raw material is as inside and outside two layers (referring to internal layer 1 and outer layer 2, similarly hereinafter), using second made of prilling, containing glass fibre Mixing granulation is made as the interlayer 3 between inside and outside two layers through coextrusion mold.
Now the content of present invention is described further in conjunction with multiple embodiments in the form of a list.
The first mixed raw material formula of the present invention is shown in Table 1.
Proportioning result (the unit of eight preferred embodiments of the invention of table 1：Mass percent)
The second mixing granulation formula of the present invention is shown in Table 2.
Proportioning result (the unit of eight preferred embodiments of the invention of table 2：Mass percent)
Above-mentioned inside and outside two layers and it is two layers inside and outside between interlayer 3 pass through the common extrusion molding of extruder, wherein one squeeze Go out machine to squeeze out inside and outside two layers using the first mixed raw material, another extruder squeezes out interlayer 3 using the second mixing granulation.Wherein, Preferably, extruder is cone double screw extruder.
In addition, first mixed raw material is made of dual-screw pelletizer；Second mixing of the prilling manufacture is made Grain is made of dual-screw pelletizer.
In table 1 above, the stabilizer of first mixed raw material is selected lead salt stabilizer, metal soap stabilizer, is had At least one of machine tin stabilizer, organic antimony stabilizer, rare-earth stabilizer, phosphite, epoxy type stabilizers.
In above-mentioned table 2, the stabilizer of second mixing granulation is selected lead salt stabilizer, metal soap stabilizer, is had At least one of machine tin stabilizer, organic antimony stabilizer, rare-earth stabilizer, phosphite, epoxy type stabilizers.
Above-mentioned pigment is organic and/or inorganic pigment, requires to adjust according to the color of practical electric power protecting pipe.
The preparation method of the FRPVC co-extrusion electric power protecting pipes of the various embodiments described above, by following steps：
Step 1) is respectively configured by dual-screw pelletizer according to the formula ratio in Tables 1 and 2, squeezes out the first mixing original Material and the second mixing granulation, and second mixing granulation meets prilling；
Step 2) is according to construction requirement, and for the first mixed raw material that step 1) is configured as inside and outside two layers, second is mixed It closes and is granulated as the interlayer 3 between inside and outside two layers, the interlayer 3 between this inside and outside two layers and this inside and outside two layers passes through two The common extrusion molding of double screw extruder is bored, electric power protecting pipe is obtained.
With 2 times of the ring stiffness of the about general pvc pipe of the ring stiffness of this obtained electric power protecting pipe.
The present invention replaces fiberglass, CPVC, MPP electric power protecting pipe by FRPVC co-extrusion electric power protecting pipes, not only has glass The anti-flammability of glass steel and CPVC electric power protecting pipes, the ring stiffness with higher fiberglass electric power protecting pipe, and solve glass Pollution problem of the glass steel electric power protecting pipe to environment makes the present invention not only with very high ring stiffness, with flame retardant property, product It is at low cost, but also can recycle, environmental protection.The present invention squeezes out the first mixed raw material and the by dual-screw pelletizer Two mixing granulations avoid traditional glass steel electric power protecting pipe and pass through the remaining waste silk process problem of fiberglass woven cloth.It is this It is added to glass fibre in protecting pipe, increases the ability for bearing pressure in tube body, the row's of can also be used as water supply is effective.
The technical solution of the above various embodiments is only to illustrate the present invention, rather than its limitations.Although with reference to aforementioned each reality Applying the technical solution of example, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still may be used To modify to preceding solution or equivalent replacement of some of the technical features；And these are changed or replace It changes, the spirit and scope of the present invention that it does not separate the essence of the corresponding technical solution.

Claims (9)

1. a kind of FRPVC co-extrusions electric power protecting pipe, it is characterised in that：The electric power protecting pipe using the first mixed raw material as in, Outer two layers, using made of prilling, contain the second mixing granulation of glass fibre as the interlayer between inside and outside two layers, It is made through coextrusion mold.
2. FRPVC co-extrusions electric power protecting pipe according to claim 1, it is characterised in that：Described inside and outside two layers and inside and outside two Interlayer between layer passes through the common extrusion molding of extruder, wherein an extruder squeezes out inside and outside two using the first mixed raw material Layer, another extruder squeeze out interlayer using the second mixing granulation.
3. FRPVC co-extrusions electric power protecting pipe according to claim 2, it is characterised in that：The extruder is that cone twin-screw squeezes Go out machine.
4. FRPVC co-extrusions electric power protecting pipe according to claim 1, it is characterised in that：First mixed raw material is by double spiral shells Bar comminutor is made.
5. FRPVC co-extrusions electric power protecting pipe according to claim 1, it is characterised in that：The second of the prilling manufacture Mixing granulation is made of dual-screw pelletizer.
6. FRPVC co-extrusions electric power protecting pipe according to claim 1, it is characterised in that：First mixed raw material is by as follows Materials in percentage by mass forms：
Polyvinyl chloride resin 60~90%,
Dibutyl ester 3~6%,
Stabilizer 2~3%,
Stearic acid 0.1~1%,
Paraffin 0.5~1%,
MBS 1.5~4.5%,
Calcium carbonate 0~30%,
Pigment 0.5~1.5%.
7. FRPVC co-extrusions electric power protecting pipe according to claim 6, it is characterised in that：The stabilization of first mixed raw material Lead salt stabilizer, metal soap stabilizer, organic tin stabilizer, organic antimony stabilizer, rare-earth stabilizer, phosphorous acid are selected in agent At least one of salt, epoxy type stabilizers.
8. FRPVC co-extrusions electric power protecting pipe according to claim 1, it is characterised in that：Second mixing granulation is by as follows Materials in percentage by mass forms：
Polyvinyl chloride resin 60~80%,
Dibutyl ester 3~6%,
Stabilizer 2~3%,
Stearic acid 0.1~1%,
Paraffin 0.5~1%,
MBS 1.5~4.5%,
Calcium carbonate 0~20%,
Glass fibre 10~30%,
Pigment 0.5~1.5%.
9. FRPVC co-extrusions electric power protecting pipe according to claim 8, it is characterised in that：The stabilization of second mixing granulation Lead salt stabilizer, metal soap stabilizer, organic tin stabilizer, organic antimony stabilizer, rare-earth stabilizer, phosphorous acid are selected in agent At least one of salt, epoxy type stabilizers.
CN201810195663.1A 2017-07-13 2018-03-09 A kind of FRPVC co-extrusions electric power protecting pipe Pending CN108390327A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2017105699533 2017-07-13
CN201710569953.3A CN107286510A (en) 2017-07-13 2017-07-13 A kind of FRPVC co-extrusions electric power protecting pipe

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CN108390327A true CN108390327A (en) 2018-08-10

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CN201810195663.1A Pending CN108390327A (en) 2017-07-13 2018-03-09 A kind of FRPVC co-extrusions electric power protecting pipe

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109370110A (en) * 2018-10-25 2019-02-22 福建亚通新材料科技股份有限公司 A kind of modified form underground pipe gallery power pipe

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103059464A (en) * 2012-12-25 2013-04-24 东莞市祺龙电业有限公司 High tenacity and environment-friendly polyvinyl chloride (PVC) modified materials and preparation method thereof
CN104795781A (en) * 2015-04-30 2015-07-22 赵朝端 Low-friction modified polypropylene/glass fiber reinforced plastic composite electrical tube and manufacturing method thereof
CN204835451U (en) * 2015-07-07 2015-12-02 常州市拓源电缆成套有限公司 Cable reinforcing protecting pipe
CN205724800U (en) * 2016-06-30 2016-11-23 临沂方圆电气有限公司 A kind of HDPE cable protection pipe
CN206099262U (en) * 2016-08-31 2017-04-12 浙江飞龙管业有限公司 Compound electric power protecting pipe of multilayer
CN106905660A (en) * 2017-03-01 2017-06-30 苏州轩朗塑料制品有限公司 A kind of anti-aging cable sheath material preparation method and applications
CN106928538A (en) * 2015-12-29 2017-07-07 天津市普立泰高分子科技有限公司 Thermoplasticity oil resistant polyolefin elastomer protective cover material and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103059464A (en) * 2012-12-25 2013-04-24 东莞市祺龙电业有限公司 High tenacity and environment-friendly polyvinyl chloride (PVC) modified materials and preparation method thereof
CN104795781A (en) * 2015-04-30 2015-07-22 赵朝端 Low-friction modified polypropylene/glass fiber reinforced plastic composite electrical tube and manufacturing method thereof
CN204835451U (en) * 2015-07-07 2015-12-02 常州市拓源电缆成套有限公司 Cable reinforcing protecting pipe
CN106928538A (en) * 2015-12-29 2017-07-07 天津市普立泰高分子科技有限公司 Thermoplasticity oil resistant polyolefin elastomer protective cover material and preparation method thereof
CN205724800U (en) * 2016-06-30 2016-11-23 临沂方圆电气有限公司 A kind of HDPE cable protection pipe
CN206099262U (en) * 2016-08-31 2017-04-12 浙江飞龙管业有限公司 Compound electric power protecting pipe of multilayer
CN106905660A (en) * 2017-03-01 2017-06-30 苏州轩朗塑料制品有限公司 A kind of anti-aging cable sheath material preparation method and applications

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Application publication date: 20180810

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