CN101649089A - Radiating crosslinked polypropylene heat shrinkage belt material and preparation method thereof - Google Patents
Radiating crosslinked polypropylene heat shrinkage belt material and preparation method thereof Download PDFInfo
- Publication number
- CN101649089A CN101649089A CN200910182707A CN200910182707A CN101649089A CN 101649089 A CN101649089 A CN 101649089A CN 200910182707 A CN200910182707 A CN 200910182707A CN 200910182707 A CN200910182707 A CN 200910182707A CN 101649089 A CN101649089 A CN 101649089A
- Authority
- CN
- China
- Prior art keywords
- polypropylene
- heat shrinkage
- belt material
- heat
- shrinkage belt
- 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
Links
Abstract
The invention provides a radiating crosslinked polypropylene heat shrinkage belt material and a preparation method thereof. The material comprises the following components in percentage by weight: 25-95 percent of polypropylene, 1-35 percent of polyethylene, 1-35 percent of ethylene propylene rubber or ethylene-propylene-diene rubber, 0.1-5 percent of crosslinked sensitizer, 0.1-2 percent of thermal oxidation resistant stabilizer, 0.1-2 percent of anti-ultraviolet absorbent and 0.1-5 percent of carbon black. The preparation process of the material comprises the following steps: mixing the polypropylene, the polyethylene, the ethylene propylene rubber or the ethylene-propylene-diene rubber, the crosslinked sensitizer, the thermal oxidation resistant stabilizer, the anti-ultraviolet absorbent and the carbon black; granulating; extruding and molding prepared granules into sheets on a sheet extruder; radiating the sheets under an electron accelerator with a ray absorbed dose of 25-180 kGy;carrying out the hot drawing on the sheets; and coating or compounding a layer of temperature resistant hot melt adhesive on the polypropylene material which is molded by the hot drawing so as to obtain the radiating crosslinked polypropylene heat shrinkage belt material. The material has higher softening point or melting temperature and can be widely applied to a corrosion resistant repaired port of a welded junction part of a 3PP pipeline.
Description
Technical field
The present invention relates to a kind of material that is used for the 3PP pipeline is carried out preventing corrosion of repaired mouth, relate in particular to a kind of radiating crosslinked polypropylene heat shrinkage belt material and preparation method thereof.
Background technology
Steel pipe can be carried multiple medium, comprises oil, Sweet natural gas and other chemical medium.Along with the variation of steel pipe running environment, also different to the requirement of preservative coat.Some medium needs high temperature to carry, high-viscosity oil etc. for example, and delivery temperature can reach more than 120 ℃.The reasonable anticorrosion mode of traditional steel pipe corrosion-proof is to adopt the 3PE anticorrosion structure, and its weld bond corrosion-resistanting interpolating port adopts the radiant crosslinked polyethylene shrink belt anticorrosion.There is following shortcoming in the radiant crosslinked polyethylene shrink belt in application:
1) temperature resistant grade is the highest 100 ℃, surpasses 100 ℃, and the polyethylene base material will melt deliquescing, and the mechanical mechanics property forfeiture loses antiseptic property, can not satisfy the requirement for anticorrosion of high temperature transport pipe;
2) physical strength is low, and the polyethylene rigidity is lower, and wear resistance is not good, and during the relatively poor region of the geologic condition that is laid in, the polyethylene shrink belt is easy to damage, causes antiseptic property to lose efficacy.
Compare with polyethylene, polypropylene has advantages such as density is little, physical strength is high, temperature tolerance is good, and in recent years, increasing pipeline adopts the 3PP anticorrosion structure.Yet, still do not have at present to develop and be similar to the radiant crosslinked polyethylene shrink belt and be directed to the anticorrosion material of using of 3PP pipe welding port.
And the difficult employing energetic ray of polypropylene method is carried out crosslinked, because, in crosslinked, being attended by serious scission reaction, it is bad that material property seriously becomes; In addition, single homopolymerization or Co-polypropylene hardness are too big, and is simultaneously more crisp, also is not suitable as heat shrinkage belt material.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of radiating crosslinked polypropylene heat shrinkage belt material that is used for the 3PP pipeline is carried out effective preventing corrosion of repaired mouth is provided.
Purpose of the present invention is achieved through the following technical solutions:
Radiating crosslinked polypropylene heat shrinkage belt material, characteristics are to comprise following composition (weight percent): polypropylene: 25～95%, polyethylene: 1～35%, ethylene propylene rubber or terpolymer EP rubber: 1～35%, crosslinking sensitizer: 0.1～5%, the heat resistanceheat resistant oxygen stabilizer: 0.1～2%, ultraviolet-resistant absorbent: 0.1～2%, carbon black: 0.1～5%.
Further, above-mentioned radiating crosslinked polypropylene heat shrinkage belt material, wherein, described crosslinking sensitizer is at least a in triallyl isocyanuric acid ester, triallyl cyanurate, Viscoat 295, the trimethylolpropane trimethacrylate.
Further, above-mentioned radiating crosslinked polypropylene heat shrinkage belt material, wherein, described heat resistanceheat resistant oxygen stabilizer is antioxidant 1010 or antioxidant 330.
Further, above-mentioned radiating crosslinked polypropylene heat shrinkage belt material, wherein, described UV light absorber is a kind of among UV-531, UV-9, UV-P, UV-326, UV-327, the UV-328.
Further, above-mentioned radiating crosslinked polypropylene heat shrinkage belt material, its component has following optimum weight per-cent: polypropylene: 60%, polyethylene: 18%, ethylene propylene rubber or terpolymer EP rubber: 15%, crosslinking sensitizer: 2%, heat resistanceheat resistant oxygen stabilizer: 1%, ultraviolet-resistant absorbent: 1%, carbon black: 3%.
Again further, the preparation method of radiating crosslinked polypropylene heat shrinkage belt material, characteristics are: at first with polypropylene, polyethylene, ethylene propylene rubber or terpolymer EP rubber, crosslinking sensitizer, the heat resistanceheat resistant oxygen stabilizer, ultraviolet-resistant absorbent, carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 25～180kGy, carrying out heat again extends, heat is extended polypropylene material coating or compound one deck heatproof hot melt adhesive of typing, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.
Again further, the preparation method of above-mentioned radiating crosslinked polypropylene heat shrinkage belt material, wherein, its thickness of the sheet material of extruding on the sheet extruder is 0.5～2.0mm.
Again further, the preparation method of above-mentioned radiating crosslinked polypropylene heat shrinkage belt material, wherein, the elongation control that heat is extended is 15%～65%.
Substantive distinguishing features and obvious improvement that technical solution of the present invention is outstanding are mainly reflected in:
Adopt polypropylene as basic resin, polyethylene (PE) and ethylene propylene rubber (EPR) or terpolymer EP rubber (EPDM) are prepared radiating crosslinked polypropylene heat shrinkage belt material as modified resin.This material has than high softening-point or melt temperature, softening point temperature (global) is at 130～220 ℃, fusing point is at 100～190 ℃, it is a kind of more satisfactory opening-supplementing material that is used for the 3PP pipeline corrosion protection, goods can be chronically 140 ℃ of uses, antiseptic property and favorable sealing property are widely used in the corrosion-resistanting interpolating port of the welded junction part of 3PP pipeline.
Embodiment
A kind of type material (radiating crosslinked polypropylene heat shrinkage belt material) that can carry out effective preventing corrosion of repaired mouth to the 3PP pipeline is provided, radiating crosslinked polypropylene heat shrinkage belt material is the more satisfactory opening-supplementing material that is used for the 3PP pipeline corrosion protection, the corrosion-resistanting interpolating port that is used for the welded junction part of 3PP pipeline can be applicable to (140 ℃ of the highest medium transport temperature) on normal temperature or the high-temperature medium transport pipe.
Radiating crosslinked polypropylene heat shrinkage belt material, adopt Co-polypropylene as basic resin, polyethylene (PE) and ethylene propylene rubber (EPR) or terpolymer EP rubber (EPDM) are as modified resin, its prescription is: polypropylene: 25～95%, and polyethylene: 1～35%, ethylene propylene rubber or terpolymer EP rubber: 1～35%, crosslinking sensitizer: 0.1～5%, the heat resistanceheat resistant oxygen stabilizer: 0.1～2%, ultraviolet-resistant absorbent: 0.1～2%, carbon black: 0.1～5%.Screening formulation is: polypropylene: 60%, and polyethylene: 18%, ethylene propylene rubber or terpolymer EP rubber: 15%, crosslinking sensitizer: 2%, the heat resistanceheat resistant oxygen stabilizer: 1%, ultraviolet-resistant absorbent: 1%, carbon black: 3%.
Wherein, add an amount of crosslinking sensitizer in polypropylene composite material, making polypropylene material principal reaction under given irradiation dose is crosslinking reaction, and crosslinking sensitizer suppresses polyacrylic radiation cleavage when impelling polypropylene crosslinked.Crosslinking sensitizer mainly is to contain carbon-to-carbon double bond (trifunctional body C=C-), specifically be triallyl isocyanuric acid ester (TAIC), triallyl cyanurate (TAC), Viscoat 295 (TMPTA), trimethylolpropane trimethacrylate (TMPTMA), can select wherein any one or multiple crosslinking sensitizer when selecting for use for use.
Add an amount of heat resistanceheat resistant oxygen stabilizer,, can suppress the thermal degradation reaction that polypropylene material takes place in the course of processing, and atmospheric environment ultraviolet ray in use and visible light react the photodegradation of material as antioxidant 1010, antioxidant 330 etc.
Add an amount of ultraviolet-resistant absorbent,, can improve the stability of material as UV-531, UV-9, UV-P, UV-326, UV-327, UV-328 etc.
Adding an amount of carbon black can increase the weathering resistance of polypropylene material and dye to material.
Concrete preparation technology is: at first with polypropylene, polyethylene, ethylene propylene rubber or terpolymer EP rubber, crosslinking sensitizer, the heat resistanceheat resistant oxygen stabilizer, ultraviolet-resistant absorbent, carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, the thickness of sheet material is 0.5～2.0mm, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 25～180kGy, carrying out heat again extends, the elongation control that heat is extended is 15%～65%, the expansion typing makes it have thermal contraction performance, heat is extended polypropylene material coating or compound one deck heatproof hot melt adhesive of typing, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.
Embodiment 1:
At first with 55.9 parts of polypropylene, 15.0 part polyethylene, 20.0 part ethylene propylene rubber, 5 parts of triallyl isocyanuric acid esters, 0.1 part antioxidant 1010,1.0 part ultraviolet-resistant absorbent UV-531,3.0 a part carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, the thickness of sheet material is 1.5mm, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 38.5kGy, carrying out heat again extends, the elongation control that heat is extended is 35%, the expansion typing makes it have thermal contraction performance, heat is extended the hot melt adhesive that the polypropylene material of finalizing the design applies 150 ℃ of heatproofs, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.This material has excellent anti-ultraviolet property, can be applied to the outdoor aerial pipeline.
Embodiment 2:
At first with 31 parts of polypropylene, 30.0 part polyethylene, 35.0 part terpolymer EP rubber, 0.5 part triallyl cyanurate, 0.5 part antioxidant 330,1.0 part ultraviolet-resistant absorbent UV-9,2 parts of carbon blacks mix, and granulation, then extrusion moulding is a sheet material on sheet extruder, the thickness of sheet material is 0.5mm, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 145kGy, carrying out heat again extends, the elongation control that heat is extended is 65%, the expansion typing makes it have thermal contraction performance, heat is extended polypropylene material coating one deck heatproof hot melt adhesive of typing, promptly obtain to have the radiating crosslinked polypropylene heat shrinkage belt material of high shrinkage.
Embodiment 3:
At first with 73.4 parts of polypropylene, 1.0 part polyethylene, 15.0 part terpolymer EP rubber, 3.5 part Viscoat 295,2.0 part antioxidant 1010,0.1 part ultraviolet-resistant absorbent UV-P, 5.0 a part carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, the thickness of sheet material is 2.0mm, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 25kGy, carrying out heat again extends, the elongation control that heat is extended is 40%, the expansion typing makes it have thermal contraction performance, heat is extended the compound one deck heatproof of the polypropylene material hot melt adhesive of typing, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.
Embodiment 4:
At first with 57.0 parts of polypropylene, 35.0 part polyethylene, 1.0 part ethylene propylene rubber, 2.0 part trimethylolpropane trimethacrylate, 1.0 part antioxidant 330,2.0 part ultraviolet-resistant absorbent UV-327,2.0 a part carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, the thickness of sheet material is 1.0mm, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 180kGy, carrying out heat again extends, the elongation control that heat is extended is 45%, the expansion typing makes it have thermal contraction performance, heat is extended polypropylene material coating one deck heatproof hot melt adhesive of typing, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.
Embodiment 5:
At first with 30.0 parts of polypropylene, 24.0 part polyethylene, 35.0 part terpolymer EP rubber, 2.5 part triallyl cyanurate, 2.0 part Viscoat 295,1.0 part antioxidant 1010,1.0 part ultraviolet-resistant absorbent UV-326,4.5 a part carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, the thickness of sheet material is 0.8mm, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 108kGy, carrying out heat again extends, the elongation control that heat is extended is 39%, the expansion typing makes it have thermal contraction performance, heat is extended polypropylene material coating one deck heatproof hot melt adhesive of typing, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.
Embodiment 6:
At first with 60.0 parts of polypropylene, 18 parts of polyethylene, 15.0 part terpolymer EP rubber, 2.0 part Viscoat 295,1.0 part antioxidant 1010,1.0 part ultraviolet-resistant absorbent UV-327,3.0 a part carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, the thickness of sheet material is 1.2mm, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 125kGy, carrying out heat again extends, the elongation control that heat is extended is 47%, the expansion typing makes it have thermal contraction performance, heat is extended the compound one deck heatproof of the polypropylene material hot melt adhesive of typing, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.
Embodiment 7:
At first with 60.0 parts of polypropylene, 18.0 part polyethylene, 15.0 part terpolymer EP rubber, 2.0 part triallyl cyanurate, 1.0 part antioxidant 330,1.0 part ultraviolet-resistant absorbent UV-9,3.0 a part carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, the thickness of sheet material is 1.5mm, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 113kGy, carrying out heat again extends, the elongation control that heat is extended is 50%, the expansion typing makes it have thermal contraction performance, heat is extended the hot melt adhesive that the polypropylene material of finalizing the design applies 150 ℃ of heatproofs, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.
After testing, the radiating crosslinked polypropylene heat shrinkage belt material that adopts technical solution of the present invention to obtain, its basic mechanical design feature index is compared with existing polyethylene heat shrinkage belt material, sees Table 1.
The performance of table 1 embodiment and current material relatively
| Test item | Test method | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Current material |
| Tensile strength (MPa) | ??GB/T1040 | ??28 | ??26 | ??30 | ??29 | ??27 | ??30 | ??27 | ??22 |
| Vicat softening point (℃) | ??GB/T1633 | ??146 | ??134 | ??148 | ??142 | ??135 | ??148 | ??141 | ??110 |
| 150 ℃ of heat-proof agings, 168h extension at break conservation rate | ? ??GB/T1040 | ? ??95％ | ? ??85％ | ? ??87％ | ? ??87％ | ? ??85％ | ? ??93％ | ? ??92％ | ? ??80％ |
The performance that has compared radiating crosslinked polypropylene heat shrinkage belt material and existing polyethylene heat shrinkage belt material in the table 1, show from test data, the intensity of material is compared with current material and is improved a lot, Vicat softening point also is greatly improved, polypropylene after crosslinked extends typing by heat, compound with hot melt adhesive, be used for the weld bond preventing corrosion of repaired mouth of oil, natural gas line, material can be at life-time service under the higher temperature.
In sum, material has than high softening-point or melt temperature, and softening point temperature (global) is at 130～220 ℃, and fusing point is at 100～190 ℃.The radiating crosslinked polypropylene shrink belt is a kind of more satisfactory opening-supplementing material that is used for the 3PP pipeline corrosion protection, and goods can be chronically 140 ℃ of uses, and antiseptic property and favorable sealing property are widely used in the corrosion-resistanting interpolating port of the welded junction part of 3PP pipeline.
What need understand is: above-mentioned explanation is not to be limitation of the present invention, and in the present invention conceived scope, the interpolation of being carried out, conversion, replacement etc. also should belong to protection scope of the present invention.
Claims (8)
1. radiating crosslinked polypropylene heat shrinkage belt material, it is characterized in that comprising following composition (weight percent): polypropylene: 25～95%, polyethylene: 1～35%, ethylene propylene rubber or terpolymer EP rubber: 1～35%, crosslinking sensitizer: 0.1～5%, the heat resistanceheat resistant oxygen stabilizer: 0.1～2%, ultraviolet-resistant absorbent: 0.1～2%, carbon black: 0.1～5%.
2. radiating crosslinked polypropylene heat shrinkage belt material according to claim 1 is characterized in that: described crosslinking sensitizer is at least a in triallyl isocyanuric acid ester, triallyl cyanurate, Viscoat 295, the trimethylolpropane trimethacrylate.
3. radiating crosslinked polypropylene heat shrinkage belt material according to claim 1 is characterized in that: described heat resistanceheat resistant oxygen stabilizer is antioxidant 1010 or antioxidant 330.
4. radiating crosslinked polypropylene heat shrinkage belt material according to claim 1 is characterized in that: described ultraviolet-resistant absorbent is a kind of among UV-531, UV-9, UV-P, UV-326, UV-327, the UV-328.
5. radiating crosslinked polypropylene heat shrinkage belt material according to claim 1, it is characterized in that its component has following weight percent: polypropylene: 60%, polyethylene: 18%, ethylene propylene rubber or terpolymer EP rubber: 15%, crosslinking sensitizer: 2%, the heat resistanceheat resistant oxygen stabilizer: 1%, ultraviolet-resistant absorbent: 1%, carbon black: 3%.
6. the preparation method of the described radiating crosslinked polypropylene heat shrinkage belt material of claim 1, it is characterized in that: at first with polypropylene, polyethylene, ethylene propylene rubber or terpolymer EP rubber, crosslinking sensitizer, the heat resistanceheat resistant oxygen stabilizer, ultraviolet-resistant absorbent, carbon black mixes, and granulation, then extrusion moulding is a sheet material on sheet extruder, sheet material carries out irradiation under rumbatron, the absorption roentgen dose X is 25～180kGy, carrying out heat again extends, heat is extended polypropylene material coating or compound one deck heatproof hot melt adhesive of typing, promptly obtain radiating crosslinked polypropylene heat shrinkage belt material.
7. the preparation method of radiating crosslinked polypropylene heat shrinkage belt material according to claim 6, it is characterized in that: the sheet material of extruding on the sheet extruder, its thickness are 0.5～2.0mm.
8. the preparation method of radiating crosslinked polypropylene heat shrinkage belt material according to claim 6 is characterized in that: the elongation control that heat is extended is 15%～65%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910182707A CN101649089A (en) | 2009-09-03 | 2009-09-03 | Radiating crosslinked polypropylene heat shrinkage belt material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910182707A CN101649089A (en) | 2009-09-03 | 2009-09-03 | Radiating crosslinked polypropylene heat shrinkage belt material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101649089A true CN101649089A (en) | 2010-02-17 |
Family
ID=41671428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910182707A Pending CN101649089A (en) | 2009-09-03 | 2009-09-03 | Radiating crosslinked polypropylene heat shrinkage belt material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101649089A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009781A (en) * | 2010-11-17 | 2011-04-13 | 史丽君 | Compound packing strap and production technology |
| CN102213354A (en) * | 2010-04-09 | 2011-10-12 | 深圳市沃尔核材股份有限公司 | Method for preparing anti-corrosion pipe by using heat shrinkable belt |
| CN102897472A (en) * | 2012-11-01 | 2013-01-30 | 上海永利输送系统有限公司 | Light conveyor belt for thermoplastic polypropylene elastomers and manufacturing method of light conveyor belt |
| CN103589059A (en) * | 2013-10-28 | 2014-02-19 | 江苏达胜热缩材料有限公司 | Radiation crosslinking polypropylene heat shrinkable belt base material |
| CN106009272A (en) * | 2016-06-24 | 2016-10-12 | 贵州德江韫韬科技有限责任公司 | Hot-shrinkage pipe and preparation method thereof |
| CN109651713A (en) * | 2018-12-28 | 2019-04-19 | 金旸（厦门）新材料科技有限公司 | A kind of repaired mouth crosslinked polypropylene thermal shrinkage belt base material and its preparation and application |
| CN111073158A (en) * | 2019-12-31 | 2020-04-28 | 金旸（厦门）新材料科技有限公司 | High-hardness polypropylene heat-shrinkable sleeve base material and preparation method thereof |
| CN112063043A (en) * | 2020-08-18 | 2020-12-11 | 中国同辐股份有限公司 | Radiation-resistant melt-blown polypropylene composite material and preparation method and application thereof |
| CN115195243A (en) * | 2022-05-27 | 2022-10-18 | 青岛天智达高科产业发展有限公司 | Radiation cross-linked polyethylene full-surrounding outer sheath type floating buoy and preparation method thereof |
-
2009
- 2009-09-03 CN CN200910182707A patent/CN101649089A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213354A (en) * | 2010-04-09 | 2011-10-12 | 深圳市沃尔核材股份有限公司 | Method for preparing anti-corrosion pipe by using heat shrinkable belt |
| CN102009781A (en) * | 2010-11-17 | 2011-04-13 | 史丽君 | Compound packing strap and production technology |
| CN102897472A (en) * | 2012-11-01 | 2013-01-30 | 上海永利输送系统有限公司 | Light conveyor belt for thermoplastic polypropylene elastomers and manufacturing method of light conveyor belt |
| CN103589059A (en) * | 2013-10-28 | 2014-02-19 | 江苏达胜热缩材料有限公司 | Radiation crosslinking polypropylene heat shrinkable belt base material |
| CN106009272A (en) * | 2016-06-24 | 2016-10-12 | 贵州德江韫韬科技有限责任公司 | Hot-shrinkage pipe and preparation method thereof |
| CN109651713A (en) * | 2018-12-28 | 2019-04-19 | 金旸（厦门）新材料科技有限公司 | A kind of repaired mouth crosslinked polypropylene thermal shrinkage belt base material and its preparation and application |
| CN111073158A (en) * | 2019-12-31 | 2020-04-28 | 金旸（厦门）新材料科技有限公司 | High-hardness polypropylene heat-shrinkable sleeve base material and preparation method thereof |
| CN112063043A (en) * | 2020-08-18 | 2020-12-11 | 中国同辐股份有限公司 | Radiation-resistant melt-blown polypropylene composite material and preparation method and application thereof |
| CN115195243A (en) * | 2022-05-27 | 2022-10-18 | 青岛天智达高科产业发展有限公司 | Radiation cross-linked polyethylene full-surrounding outer sheath type floating buoy and preparation method thereof |
| CN115195243B (en) * | 2022-05-27 | 2024-03-12 | 青岛天智达高科产业发展有限公司 | Radiation crosslinked polyethylene full-surrounding outer sheath type floating barrel and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101649089A (en) | Radiating crosslinked polypropylene heat shrinkage belt material and preparation method thereof | |
| CN103012939B (en) | The production method of a kind of ultraviolet light cross-linking heat shrinkable pipe material and ultraviolet light cross-linking heat-shrink tube | |
| CN103819807B (en) | Polyolefin elastomer film of crosslinking with radiation and preparation method thereof | |
| CN102030950B (en) | Ethylene-propylene-diene rubber thermal shrinkable tube and preparation method thereof | |
| JP6040246B2 (en) | Polymer composition and articles prepared therefrom | |
| CN103665508A (en) | Polyethylene composite for drip irrigation pipes | |
| CN102449057A (en) | Polymer composition for crosslinked pipes | |
| CN106700193A (en) | Polyethylene composition | |
| CN101824180B (en) | High elasticity polyolefin hose with radiation crosslinking and preparation method thereof | |
| CN103467898B (en) | The low surface temperature rise cable sheath rubber of naval vessel high current-carrying capacity and manufacture method thereof | |
| CN105017599A (en) | High-concentration carbon black master batch for polyethylene geomembrane | |
| JP4782507B2 (en) | Method for producing thermoplastic elastomer composition | |
| JP2012025945A (en) | Resin composition for extrusion molding, sealing material for solar cell module and solar cell module using the same, water-shielding sheet, or tarpaulin | |
| CN103474140B (en) | Naval vessel shielding demagnetization flat cable and manufacture method thereof | |
| CN110698747B (en) | Creep-resistant impact-resistant PE pipe and production method thereof | |
| CN105001637A (en) | High polymer material for pipeline and preparation method of high polymer material | |
| KR101349450B1 (en) | Resin compositions for encapsulating material of photovoltaic cell | |
| CN110317546A (en) | A kind of steel conduit preventing corrosion of repaired mouth flame-proof polyethylene shrink belt and preparation method thereof | |
| CN105801991A (en) | Halogen-free heat shrinkable casing pipe and preparation method thereof | |
| CN111909463B (en) | High-temperature-resistant and high-air-tightness composite material for repairing thermal pipeline and preparation method and application thereof | |
| CN114133689A (en) | Radiation crosslinking polypropylene thermal shrinkage belt base material and preparation method thereof | |
| CN108342007A (en) | A kind of blowing oil tank material and preparation method thereof | |
| CN114440013A (en) | Low-temperature-resistant PP-R composite pipe and preparation method and application thereof | |
| CN114790309A (en) | Polyolefin composite material, preparation method thereof, floating body and photovoltaic support | |
| CN105602067A (en) | High-strength HDPE high-voltage electric power cable material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100217 |