CN102040918A - Super-strong radiant crosslinked polyethylene heat shrinkable adhesive tape and preparation method thereof - Google Patents
Super-strong radiant crosslinked polyethylene heat shrinkable adhesive tape and preparation method thereof Download PDFInfo
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- CN102040918A CN102040918A CN2009100360538A CN200910036053A CN102040918A CN 102040918 A CN102040918 A CN 102040918A CN 2009100360538 A CN2009100360538 A CN 2009100360538A CN 200910036053 A CN200910036053 A CN 200910036053A CN 102040918 A CN102040918 A CN 102040918A
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Abstract
The invention discloses a super-strong radiant crosslinked polyethylene heat shrinkable adhesive tape and a preparation method thereof. The adhesive tape is characterized by comprising the following components in percentage by weight: 25.86 to 34.61 percent of high density polyethylene, 48.78 to 61.35 percent of low density polyethylene, 1.51 to 2.40 percent of nanometer montmorillonite, 0.33 to 0.61 percent of carbon black, 0.32 to 0.45 percent of polyethylene wax, 0.12 to 0.17 percent of antioxidant trichloroacetic acid (TCA), 9.50 to 13.68 percent of ethylene-vinyl acetate copolymer, 0.12 to 0.19 percent of coupling agent A172 and the balance of polyethylene hot melt adhesive. The preparation method comprises the following steps of: compounding the nanometer montmorillonite with the high density polyethylene and the low density polyethylene in a molten state, and mixing with the carbon black, the polyethylene wax, the ethylene-vinyl acetate copolymer, the coupling agent and the antioxidant; extruding to form a base material by using an extruder, performing radiation crosslinking on the base material and stretching; and coating the polyethylene hot melt adhesive on the surface of the base material to form a finished product. The heat shrinkable tape prepared by the method has the advantages of high tensile strength, breaking elongation, peel strength, aging resistance and sealing performance, convenience of construction and the like.
Description
Technical field
The present invention relates to a kind of superpower radiant crosslinked polyethylene thermal contraction adhesive tape, comprise the composition and the preparation method of this contraction adhesive tape.
Background technology
In recent years, the high-molecular polythene pipeline obtains application more and more widely in fields such as oil, chemical industry.Along with the continuous rising of polyethylene cost of material, developed the compound pipeline complex pipeline made from ultra high molecular polyethylene and High Tensile Steel Wire on the market again and reached the purpose that not only reduces cost but also guarantee pipeline mechanical property and bearing capacity.Its basal body pipe of such pipeline is a superhigh molecular weight polyethylene pipe, adopt steel wire to twine arrangement at the basal body pipe outer wall perpendicular to basal body pipe axis mode, the radiant crosslinked polyethylene shrink belt that steel wire outer wall parcel sheet spiral twines, between steel wire and the steel wire, between steel wire and the basal body pipe, adopt polyethylene hot-melt adhesive to heat between steel wire and the radiant crosslinked polyethylene shrink belt to be bonded into one.This method can guarantee that compound pipeline complex pipeline has enough wear resistancies and erosion resistance under environment for use, thereby improves the work-ing life and the security of compound pipeline complex pipeline.
Radiation-crosslinking thermal-contraction belt is as the important component part of compound pipeline complex pipeline, and its performance directly has influence on the overall performance of pipeline.For work-ing life and the performance that improves compound pipeline complex pipeline, and be implemented in application under the particular surroundings, need improve every mechanical property of radiation-crosslinking thermal-contraction belt as far as possible.Because new LDPE (film grade) degree of crystallinity is lower, is easy to radiation crosslinking, has certain snappiness simultaneously, common base resin as the radiation crosslinking heat-shrinkable article is as reporting among CN101230938 and the CN1257090.But, be that raw material exists temperature tolerance and the low shortcoming of mechanical property with the new LDPE (film grade).It is the method that raw material is made heat shrinkable pipeline covering material with plastic waste and new LDPE (film grade) that CN1401705 discloses a kind of, and the tensile strength of the material of producing is more than or equal to 15MPa, and elongation at break is more than or equal to 400%.It is main raw material with high and low density polyethylene co-mixing system that CN1039039 discloses a kind of, and adds ethylene-vinyl acetate copolymer modified thermal contraction formula for a product and production method thereof, and the tensile strength of its product is 18MPa, and elongation at break is greater than 400%.The tensile strength of present commercially available radiation-crosslinking thermal-contraction belt mostly is greater than 17MPa, elongation at break is greater than 400%, be more than or equal to 70N/cm to polyethylene layer with to the stripping strength of steel wire in the time of 25 ℃, do not see to have the more report of the radiation-crosslinking thermal-contraction belt goods of high-mechanical property.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, proposed a kind of every mechanical property and all be better than radiant crosslinked polyethylene thermal contraction adhesive tape prescription of currently available products, excellent combination property and preparation method thereof.
Technical scheme of the present invention is as follows: superpower radiant crosslinked polyethylene thermal contraction adhesive tape comprises following component (weight %):
In the technique scheme:
(1) base resin of radiant crosslinked polyethylene shrink belt is selected the blend of high density polyethylene(HDPE) and new LDPE (film grade) for use.Its melting index of described high density polyethylene(HDPE) is 1.0-1.30, and fracture tensile strength is 〉=25Mpa; Elongation at break 〉=550; The consumption of high density polyethylene(HDPE) in shrink belt is generally 25.86-34.61 weight %, and preferable range is 27.25～32.15 weight %.Its melting index of described new LDPE (film grade) is 2.0, and fracture tensile strength is 〉=13; Elongation at break 〉=500; The consumption of new LDPE (film grade) in shrink belt is generally 48.78～61.35 weight %, and preferable range is 51.88～58.89 weight %.
(2) for rigidity, dimensional stability and thermostability and the toughness of multicomponent polymeric, good cementability, processibility with inorganics combine, strengthen the shrink belt over-all properties, add nano imvite.Described nano imvite is the polynite of handling with cetyl trimethylammonium bromide or octadecyl trimethylammonium bromide.The preparation method is as follows: be to drip the excessive cetyl trimethylammonium bromide or the octadecyl trimethylammonium bromide aqueous solution under 80 ℃ of vigorous stirring in the aqueous solution of polynite (handling through sodium chloride aqueous solution in advance) of 5% (weight) in concentration, suction filtration after 6 hours, and wash with water to no bromide anion, the separation final vacuum is dried to constant weight and promptly gets organo montmorillonite, and grinds to form 300-400 order powder.The consumption of nano imvite in shrink belt is generally 1.51～2.40 weight %, and preferable range is 1.60～2.08 weight %.
(3) radiant crosslinked polyethylene shrink belt employing polyethylene wax is a lubricant.Its molecular weight of described polyethylene wax is 1500-2500, and softening temperature is 107-110; The consumption of polyethylene wax in shrink belt is generally 0.32～0.45 weight %, and preferable range is 0.35～0.43 weight %.
(4) vinyl acetate content is generally between 19-40 weight % in its multipolymer of described ethylene-vinyl acetate copolymer, and preferable range is 26-32 weight %, and melting index is 3-18, and preferable range is 4-15; The consumption of ethylene-vinyl acetate copolymer in shrink belt is generally 9.50～13.68 weight %, and preferable range is 11.80～13.11 weight %.
For guaranteeing to reach the designed effect of the present invention, the convenient use, superpower radiant crosslinked polyethylene thermal contraction adhesive tape of the present invention should be by following prepared:
A. by the described proportioning of claim 1 high density polyethylene(HDPE), new LDPE (film grade) and nano imvite are mixed, be heated to fusion and carry out compound;
B. a gained mixture and carbon black, polyethylene wax, ethylene-vinyl acetate copolymer, coupling agent and oxidation inhibitor are mixed in proportion;
C. gained mixture among the b is extruded into base material through forcing machine, extruder barrel and each section of head Heating temperature are 100-300 ℃, and the thickness of base material is the 1-5 millimeter;
D. base material is carried out radiation crosslinking;
E. the base material behind the radiation crosslinking is rolled stretching, thickness is the 0.8-4.0 millimeter;
F. painting polyethylene hot melt adhesive on the substrate surface after calendering stretches, bondline thickness is the 0.1-3.0 millimeter.
The superpower radiant crosslinked polyethylene thermal contraction adhesive tape that the present invention produced has shock strength, tensile strength, wear resistance and erosion resistance etc. all apparently higher than the PE100 polythene material, and with pipeline base material and the big characteristics of steel wire bonding force, its advantage comprises:
(1) selection process prescription screens crosslinked, levelling, auxiliary agent such as thermally-stabilised, lubricated, effectively guides crosslinked inhibition degraded, makes prescription more scientific and reasonable.
(2) by the intercalation complex method, add the nano imvite that organises, realize that the dispersion of mineral filler in many component polymers matrix reaches nanoscale, give full play to the excellent mechanical property and the high heat resistance of inorganic materials, improve the comprehensive mechanical performance of shrink belt.
(3) be lubricant with the low-molecular polyethylene wax, select nontoxic oxidation inhibitor for use, be applicable to water service pipe.
(4) by regulating the proportioning of high density polyethylene(HDPE) and new LDPE (film grade); control rational crosslinking degree; improved the contraction memory of thermal contraction adhesive tape significantly; make the superpower radiant crosslinked polyethylene thermal contraction of the present invention adhesive tape be used for when superhigh molecular weight polyethylene pipe pipe protection layer twines suitable shrinking percentage being arranged, thereby obtain best winding effect.
(5) select high performance hot melt adhesive and coating apparatus for use, control suitable glue spread, make be wrapped in pipeline outer-layer shrink belt when being subjected to thermal contraction the hot melt adhesive porous to the polyvinyl piping materials matrix, and the steel wire floor gap that hoop twines is all filled up substantial, pipeline base material, steel wire and thermal contraction adhesive tape are sticked to one.
(6) product performance are superior, and tensile strength is that 21.5MPa, elongation at break are 730%, stripping strength is (to steel) 106N/cm, (to polyethylene) 102N/cm, all is better than appearing in the newspapers.
(7) cohesive force of steel wire is substantially exceeded the bonding force of common polythene, can improve the resistance to fatigue of compound pipeline complex pipeline greatly.
(8) increased substantially tubing deposit, transport, shock resistance in installation and the use, anticorrosive, resistance to wear, the viability of high temperature resistance, tubing played best protection.
(9) easy construction, the water-tight superior performance, it is particularly suitable to do outer protective layer with it.
Below in conjunction with example the present invention is described in further details:
Specific implementation method 1
(1) take by weighing each component (weight %) by following processing compound:
High density polyethylene(HDPE) 25.86 new LDPE (film grade)s 61.35 nano imvites 2.40
Carbon black 0.33 polyethylene wax 0.32 oxidation inhibitor TCA 0.12
Coupling agent A172 0.12 ethylene-vinyl acetate copolymer 9.50
(2) high density polyethylene(HDPE), new LDPE (film grade) and nano imvite are mixed, be heated to fusion and carry out compound;
(3) (2) gained mixture and carbon black, polyethylene wax, ethylene-vinyl acetate copolymer, coupling agent and oxidation inhibitor are mixed;
(4) (3) gained mixture is extruded into base material through forcing machine, extruder barrel and each section of head temperature are controlled at 100-250 ℃;
(5) base material is carried out radiation crosslinking;
(6) base material behind the radiation crosslinking is rolled stretching;
(7) polyethylene hot-melt adhesive of coating specific thickness on the substrate surface after calendering stretches.
Specific implementation method 2
(1) take by weighing each component (W%) by following processing compound:
High density polyethylene(HDPE) 27.25 new LDPE (film grade)s 58.89 nano imvites 2.08
Carbon black 0.35 polyethylene wax 0.35 oxidation inhibitor TCA 0.13
Coupling agent A172 0.15 ethylene-vinyl acetate copolymer 10.80
(2) high density polyethylene(HDPE), new LDPE (film grade) and nano imvite are mixed, be heated to fusion and carry out compound;
(3) (2) gained mixture and carbon black, polyethylene wax, ethylene-vinyl acetate copolymer, coupling agent and oxidation inhibitor are mixed;
(4) (3) gained mixture is extruded into base material through forcing machine, extruder barrel and each section of head temperature are controlled at 105-260 ℃;
(5) base material is carried out radiation crosslinking;
(6) base material behind the radiation crosslinking is rolled stretching;
(7) polyethylene hot-melt adhesive of coating specific thickness on the substrate surface after calendering stretches.
Specific implementation method 3
(1) take by weighing each component (W%) by following processing compound:
High density polyethylene(HDPE) 29.45 new LDPE (film grade)s 55.51 nano imvites 1.89
Carbon black 0.42 polyethylene wax 0.41 oxidation inhibitor TCA 0.14
Coupling agent A172 0.17 ethylene-vinyl acetate copolymer 12.01.
(2) high density polyethylene(HDPE), new LDPE (film grade) and nano imvite are mixed, be heated to fusion and carry out compound;
(3) (2) gained mixture and carbon black, polyethylene wax, ethylene-vinyl acetate copolymer, coupling agent and oxidation inhibitor are mixed;
(4) (3) gained mixture is extruded into base material through forcing machine, extruder barrel and each section of head temperature are controlled at 115-270 ℃;
(5) base material is carried out radiation crosslinking;
(6) base material behind the radiation crosslinking is rolled stretching;
(7) polyethylene hot-melt adhesive of coating specific thickness on the substrate surface after calendering stretches.
Specific implementation method 4
(1) take by weighing each component (W%) by following processing compound:
High density polyethylene(HDPE) 32.15 new LDPE (film grade)s 51.88 nano imvites 1.60
Carbon black 0.50 polyethylene wax 0.43 oxidation inhibitor TCA 0.15
Coupling agent A172 0.18 ethylene-vinyl acetate copolymer 13.11.
(2) high density polyethylene(HDPE), new LDPE (film grade) and nano imvite are mixed, be heated to fusion and carry out compound;
(3) (2) gained mixture and carbon black, polyethylene wax, ethylene-vinyl acetate copolymer, coupling agent and oxidation inhibitor are mixed;
(4) (3) gained mixture is extruded into base material through forcing machine, extruder barrel and each section of head temperature are controlled at 115-270 ℃;
(5) base material is carried out radiation crosslinking;
(6) base material behind the radiation crosslinking is rolled stretching;
(7) polyethylene hot-melt adhesive of coating specific thickness on the substrate surface after calendering stretches.
Specific implementation method 5
(1) take by weighing each component (W%) by following processing compound:
High density polyethylene(HDPE) 34.61 new LDPE (film grade)s 48.78 nano imvites 1.51
Carbon black 0.61 polyethylene wax 0.45 oxidation inhibitor TCA 0.17
Coupling agent A172 0.19 ethylene-vinyl acetate copolymer 13.68.
(2) high density polyethylene(HDPE), new LDPE (film grade) and nano imvite are mixed, be heated to fusion and carry out compound;
(3) (2) gained mixture and carbon black, polyethylene wax, ethylene-vinyl acetate copolymer, coupling agent and oxidation inhibitor are mixed;
(4) (3) gained mixture is extruded into base material through forcing machine, extruder barrel and each section of head temperature are controlled at 120-280 ℃;
(5) base material is carried out radiation crosslinking;
(6) base material behind the radiation crosslinking is rolled stretching;
(7) polyethylene hot-melt adhesive of coating specific thickness on the substrate surface after calendering stretches.
Claims (6)
1. superpower radiant crosslinked polyethylene thermal contraction adhesive tape, it is characterized in that: comprise following component: high density polyethylene(HDPE) 25.86～34.61 in weight %, new LDPE (film grade) 48.78～61.35, nano imvite 1.51～2.40, carbon black 0.33～0.61, polyethylene wax 0.32～0.45, oxidation inhibitor TCA 0.12～0.17, ethylene-vinyl acetate copolymer 9.50～13.68, coupling agent A-172 0.12-0.19.
2. superpower radiant crosslinked polyethylene thermal contraction adhesive tape according to claim 1, it is characterized in that: its melting index of described high density polyethylene(HDPE) is 1.00-1.30, fracture tensile strength is 〉=25; Elongation at break 〉=550; Tensile yield by force 〉=22.0; The consumption of high density polyethylene(HDPE) in the thermal contraction adhesive tape is generally 25.86～34.61 weight %, and preferable range is 27.25～32.15 weight %.
3. superpower radiant crosslinked polyethylene shrink belt according to claim 1 is characterized in that: its melting index of described new LDPE (film grade) is 2.0, and fracture tensile strength is 〉=13, elongation at break 〉=500; The consumption of new LDPE (film grade) in shrink belt is generally 48.78～61.35 weight %, and preferable range is 51.88～58.89 weight %.
4. superpower radiant crosslinked polyethylene shrink belt according to claim 1 is characterized in that: described nano imvite is the polynite of handling with cetyl trimethylammonium bromide or octadecyl trimethylammonium bromide, and grinds to form the 300-400 order; The consumption of nano imvite in shrink belt is generally 1.51～2.40 weight %, and preferable range is 1.60～2.08 weight %.
5. superpower radiant crosslinked polyethylene shrink belt according to claim 1 is characterized in that: its molecular weight of described polyethylene wax is 1500-2500, and softening temperature is 107-110; The consumption of polyethylene wax in shrink belt is generally 0.32～0.45 weight %, and preferable range is 0.35～0.43 weight %.
6. superpower radiant crosslinked polyethylene shrink belt according to claim 1, it is characterized in that: vinyl acetate content is generally between 19.0-40.0 weight % in its multipolymer of described ethylene-vinyl acetate copolymer, preferable range is 26-32 weight %, melting index is 3-18, and preferable range is 4-15; The consumption of ethylene-vinyl acetate copolymer in shrink belt is generally 9.50～13.68 weight %, and preferable range is 10.80～13.11 weight %.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100360538A CN102040918A (en) | 2009-10-16 | 2009-10-16 | Super-strong radiant crosslinked polyethylene heat shrinkable adhesive tape and preparation method thereof |
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| CN2009100360538A CN102040918A (en) | 2009-10-16 | 2009-10-16 | Super-strong radiant crosslinked polyethylene heat shrinkable adhesive tape and preparation method thereof |
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| CN103497400A (en) * | 2013-09-29 | 2014-01-08 | 苏州华周胶带有限公司 | Polyethylene foam tape base material |
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| CN102504393A (en) * | 2011-11-14 | 2012-06-20 | 联塑市政管道（河北）有限公司 | PE plate for electric heating fusion band and method for processing plate |
| CN102504393B (en) * | 2011-11-14 | 2014-07-16 | 联塑市政管道（河北）有限公司 | PE plate for electric heating fusion band and method for processing plate |
| CN102702606A (en) * | 2012-06-25 | 2012-10-03 | 广州市金威龙实业股份有限公司 | Anti-slip shrink film and preparation method thereof |
| CN102702606B (en) * | 2012-06-25 | 2014-05-28 | 广州市金威龙实业股份有限公司 | Anti-slip shrink film and preparation method thereof |
| CN102816366A (en) * | 2012-08-15 | 2012-12-12 | 中国第一汽车股份有限公司 | Special high rigidity and weathering resistance automotive blow molding urea container material |
| CN102816366B (en) * | 2012-08-15 | 2017-04-05 | 中国第一汽车股份有限公司 | A kind of high rigidity weatherability automobile is blow molded urea container proprietary material |
| CN103497400B (en) * | 2013-09-29 | 2015-12-09 | 苏州华周胶带有限公司 | A kind of Polyethylene foam tape base material |
| CN103497400A (en) * | 2013-09-29 | 2014-01-08 | 苏州华周胶带有限公司 | Polyethylene foam tape base material |
| CN111231470A (en) * | 2020-04-03 | 2020-06-05 | 汕头市明佳热收缩膜有限公司 | Multilayer co-extruded polyethylene heat shrinkable film and preparation method thereof |
| CN114456471A (en) * | 2022-03-19 | 2022-05-10 | 四川成双防腐材料有限公司 | Heat-shrinkable sleeve and preparation method thereof |
| CN114790370A (en) * | 2022-05-18 | 2022-07-26 | 杨建强 | High-temperature-resistant reinforced irradiation crosslinking heat-shrinkable tape and preparation method thereof |
| CN114790370B (en) * | 2022-05-18 | 2024-04-02 | 杨建强 | High Wen Zengjiang irradiation-resistant crosslinked heat-shrinkable tape and preparation method 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 |
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Application publication date: 20110504 |