CN102051139B - Polyethylene anticorrosion adhesive tape and preparation method thereof - Google Patents
Polyethylene anticorrosion adhesive tape and preparation method thereof Download PDFInfo
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- CN102051139B CN102051139B CN2010105985088A CN201010598508A CN102051139B CN 102051139 B CN102051139 B CN 102051139B CN 2010105985088 A CN2010105985088 A CN 2010105985088A CN 201010598508 A CN201010598508 A CN 201010598508A CN 102051139 B CN102051139 B CN 102051139B
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- -1 Polyethylene Polymers 0.000 title claims abstract description 82
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 82
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 81
- 239000002390 adhesive tape Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title description 5
- 229920001971 elastomer Polymers 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 23
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 23
- 229920002367 Polyisobutene Polymers 0.000 claims abstract description 12
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 12
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 51
- 230000008929 regeneration Effects 0.000 claims description 24
- 238000011069 regeneration method Methods 0.000 claims description 24
- 244000043261 Hevea brasiliensis Species 0.000 claims description 22
- 229920003052 natural elastomer Polymers 0.000 claims description 22
- 229920001194 natural rubber Polymers 0.000 claims description 22
- VHOQXEIFYTTXJU-UHFFFAOYSA-N Isobutylene-isoprene copolymer Chemical group CC(C)=C.CC(=C)C=C VHOQXEIFYTTXJU-UHFFFAOYSA-N 0.000 claims description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 16
- 229920003244 diene elastomer Polymers 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 230000003712 anti-aging effect Effects 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 12
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 11
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 11
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 10
- 239000003208 petroleum Substances 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 8
- 239000004902 Softening Agent Substances 0.000 claims description 6
- IHLDEDLAZNFOJB-UHFFFAOYSA-N 6-octoxy-6-oxohexanoic acid Chemical compound CCCCCCCCOC(=O)CCCCC(O)=O IHLDEDLAZNFOJB-UHFFFAOYSA-N 0.000 claims description 2
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical group CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 claims description 2
- 238000007765 extrusion coating Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 12
- 239000012790 adhesive layer Substances 0.000 abstract 5
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract 1
- 239000004014 plasticizer Substances 0.000 abstract 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 30
- 229920002554 vinyl polymer Polymers 0.000 description 16
- 239000012528 membrane Substances 0.000 description 9
- 239000000470 constituent Substances 0.000 description 8
- 210000004379 membrane Anatomy 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 210000002469 basement membrane Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Classifications
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- B29C47/92—
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention discloses a polyethylene anticorrosion adhesive tape. The adhesive tape consists of a polyethylene base film and an adhesive layer, wherein the adhesive layer is obtained by mixing components of the adhesive layer, extruding through an extruder, coating on the polyethylene base film and compounding; the polyethylene base film is prepared from the following components in percentage by mass: 40 to 60 percent of low density polyethylene, 10 to 45 percent of high density polyethylene, 5 to 25 percent of ethylene-vinyl acetate copolymer, 0 to 5 percent of rubber A and 0 to 5 percent of auxiliary agent; and the adhesive layer is prepared from the following components in percentage by mass: 30 to 60 percent of rubber B, 10 to 30 percent of inorganic mineral, 10 to 30 percent of tackifying resin, 3 to 10 percent of polyisobutene and 1 to 3 percent of plasticizer. The prepared polyethylene anticorrosion adhesive tape has high peel strength to a back material, namely the adhesive layer has high peel strength to the back of the polyethylene base film, and the maximum peel strength is 40.0N/cm.
Description
One, technical field
The present invention relates to a kind of metallic conduit outer wall that is wound in etch-proof adhesive tape, particularly a kind of polyethylene anticorrosion adhesive tape to back of the body high-peeling strength.
Two, background technology
The protective system of polyethylene anticorrosion adhesive tape generally is made of priming paint-anticorrosion belt (interior band)-boundary belt (in addition).Priming paint is formulated through organic solvent by isoprene-isobutylene rubber and tackifying resin, guarantees to have good bonding force with steel pipe.Inside and outside band is made of polyethylene based film and butyl rubber adhesive, and good physical strength and adhering and sealing performance are arranged.The anticorrosive quality of polyethylene anticorrosion adhesive tape depends primarily on the cohesive force of glue-membrane interface.
With respect to other impregnating material, polyethylene antiseptic adhesive tape has good impact resistance, good static-pressure-resisting, good waterproof sealing, construction is simple, long service life, the characteristics such as suitability is wide are so occupy certain status in the pipeline corrosion protection material system.But the ability of its anti-soil stress is bad, and especially at high temperature, meeting is the poor and high cathode screen (Oil ﹠ Gas Storage,, the 8th phase of the 22nd volume in 2003) that produces of compactness because of cohesive force.
Deficiency for the existence of polyethylene adhesive tape; bring into use three-layer PE anticorrosive coat the external eighties; its epoxy powder that the North America is good combines with the polyethylene barrier protection layer in Europe; make this system have very high cohesive force, good antikathode separability, chemical barrier characteristic and antioxygen, but its cost is relatively high.(coal gas and heating power,, the 8th phase of the 25th volume in 2005).Domestic, patent CN1234422-A has prepared the polythene anticorrosive adhesive tape of high interface physical strength by polyethylene based film and pressure-sensitive isoprene-isobutylene rubber glue-line is compound under the heat fusing condition.Patent CN1057612-A utilizes glass enhancing basement membrane to prepare high-tensile anticorrosion adhesive tape.But relevant high anticorrosion adhesive tape to back of the body stripping strength aspect yet there are no open report.
Three, summary of the invention
Because the such environmental effects of various places, requirement to adhesive tape is also different, the purpose of this invention is to provide a kind of controlled polyethylene anticorrosion adhesive tape to back of the body stripping strength and preparation method thereof, especially a kind of high polyethylene anticorrosion adhesive tape and preparation thereof to back of the body stripping strength.
The technical solution used in the present invention is:
A kind of polyethylene anticorrosion adhesive tape is characterized in that described polyethylene anticorrosion adhesive tape is comprised of polyethylene based film and glue paste layer, and wherein the glue paste layer is to be mixed by forcing machine Extrusion Coating compound obtaining on polyethylene based film by each component of glue paste layer;
Described polyethylene based film is made by the component of following massfraction: Low Density Polyethylene 40～60%, high density polyethylene(HDPE) 10～45%, the multipolymer 5～25% of ethene and vinyl acetate, rubber A0～5%, auxiliary agent 0～5%;
Described glue paste layer is made by the component of following massfraction: rubber B 30%～60%, inorganic mineral 10～30%, tackifying resin 10～30%, polyisobutene 3～10%, softening agent 1～3%.
The thickness of described polyethylene based film is 0.2～0.8mm, and preferred 0.4～0.8mm, the thickness of glue paste layer are 0.15～0.8mm, preferred 0.3～0.6mm.
The component concentration of rubber A is 0～5% in the polyethylene based film of the present invention, wherein 0 refers to be infinitely close to 0 but be not 0.
Rubber A of the present invention, rubber B refers to rubber, and the A here and B just are used for distinguishing at the distribution polyethylene basement membrane or being distributed in rubber in the glue paste layer, and the concept of both materials is identical.
Rubber A described in the described polyethylene based film is any one or the two or more mixing in natural rubber, isoprene-isobutylene rubber, regeneration natural rubber, the isobutene-diene rubber regeneration.
Rubber B described in the described glue paste layer is any one or the two or more mixing in natural rubber, isoprene-isobutylene rubber, regeneration natural rubber, the isobutene-diene rubber regeneration.
Inorganic mineral described in the described glue paste layer is one or more the mixing in calcium carbonate, activated earth or the talcum powder.
Tackifying resin described in the described glue paste layer is one or more the mixing in terpine resin, petroleum resin or the Gum Rosin.
Softening agent is dioctyl ester, dibutylester, dioctyl sebacate or Octyl adipate described in the described glue paste layer.
The component concentration of auxiliary agent is 0～5% in the described polyethylene based film, wherein 0 refers to be infinitely close to 0 but be not 0.Auxiliary agent described in the described polyethylene based film is one or both in anti-aging agent, the colour batch.This is auxiliary agent commonly used in the art technology, and anti-aging agent is used for preventing that adhesive tape is subject to rayed and wearing out that corrosion brings, and colour batch is used for the color processing of anticorrosion adhesive tape in order to adapt to producer's demand, all can adopt the raw material of commonly using on the market.
The present invention also provides the manufacture method of described polyethylene anticorrosion adhesive tape, and described method comprises the steps:
(1) gets the component Low Density Polyethylene 40～60% of following massfraction, high density polyethylene(HDPE) 10～45%, the multipolymer 5～25% of ethene and vinyl acetate, rubber A 0～5%, auxiliary agent 0～5% after mixing, is extruded through twin screw extruder, obtain the polyethylene based film that thickness is 0.2～0.8mm, extrusion temperature is 170～190 ℃
(2) get the component rubber B 30%～60% of following massfraction, inorganic mineral 10～30%, tackifying resin 10～30%, polyisobutene 3～10%, softening agent 1～3%, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude and be applied on the polyethylene based film that step (1) obtains, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.15～0.8mm, the thickness of described glue agent layer is controlled by the outlet of control single screw extrusion machine and the distance of polyethylene based film.
The outlet mouth mould of described twin screw extruder is the shape of adhesive tape basementmembrane, can obtain certain thickness film by controlling certain pulling speed, and this is the known preparation methods of those skilled in the art.
In the described step (1) polyethylene based film from the outlet mouth mode pulling of twin screw extruder out after, need to be through a little cooling (usually being cooled to below 130 ℃), but do not need to be cooled to fully room temperature, can with step (2) in the membrana oralis and the distance of polyethylene based film of the glue paste layer direct combination extruded of single screw extrusion machine by the single Screw Extrusion of control, control the thickness of glue paste.This should be the known operative techniquies of those skilled in the art.
Technique effect of the present invention is, the polyethylene anticorrosion adhesive tape that makes is high to the backing stripping strength, refer to that specifically the glue paste layer is for the back of polyethylene based film, has very high stripping strength, reach as high as 40.0N/cm, and by adjusting the component proportion of polyethylene based film and glue paste, be regulatable to the backing stripping strength.
Four, description of drawings
The schematic diagram of Fig. 1 polythene anticorrosive adhesive tape, A is polyethylene based film among the figure; B is the glue paste layer.
Five, embodiment
The below comes technical scheme of the present invention is described further with specific embodiment, but protection scope of the present invention is not limited to this.
The anti-aging agent of using among the embodiment is the newly antioxidant BLE of long chemical company limited of Nantong, and colour batch is the Shanghai PE2718 of sub-Materials Co., Ltd of securing satisfactory grades that shakes.
Embodiment 1:
Polyvinyl constituent of the film: Low Density Polyethylene 45%, high density polyethylene(HDPE) 30%, the multipolymer of ethene and vinyl acetate (EVA) 20%, isobutene-diene rubber regeneration 2%, isoprene-isobutylene rubber 1%, anti-aging agent 1%, colour batch 1%.
The composition of glue paste: isoprene-isobutylene rubber 10%, natural rubber 30%, isobutene-diene rubber regeneration 10%, calcium carbonate 10%, talcum powder 15%, terpine resin 15%, petroleum resin 5%, polyisobutene 3%, dibutylester 2%.
(1) get above-mentioned polyvinyl membrane component, after mixing, extrude through twin screw extruder, obtain the polyethylene based film that thickness is 0.6mm, extrusion temperature is 170～190 ℃.
(2) get as above glue paste component, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude on the polyethylene based film that is applied to 90～110 ℃, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.5mm.
It reaches 38.0N/cm to the back of the body stripping strength product that makes, and the base material tensile strength is at 23MPa.
Embodiment 2:
Polyvinyl constituent of the film: Low Density Polyethylene 50%, high density polyethylene(HDPE) 30%, the multipolymer of ethene and vinyl acetate (EVA) 15%, isoprene-isobutylene rubber 3%, anti-aging agent 1%, colour batch 1%.
The composition of glue paste: isoprene-isobutylene rubber 25%, natural rubber 20%, isobutene-diene rubber regeneration 7%, calcium carbonate 13%, talcum powder 12%, terpine resin 13%, petroleum resin 5%, polyisobutene 4%, dibutylester 1%.
(1) get above-mentioned polyvinyl membrane component, after mixing, extrude through twin screw extruder, obtain the polyethylene based film that thickness is 0.5mm, extrusion temperature is 170～190 ℃.
(2) get as above glue paste component, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude and be applied on 40～60 ℃ the polyethylene based film that step (1) obtains, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.4mm.
It reaches 35.0N/cm to the back of the body stripping strength product that makes, and the base material tensile strength is at 24MPa.
Embodiment 3
Polyvinyl constituent of the film: Low Density Polyethylene 55%, high density polyethylene(HDPE) 20%, the multipolymer of ethene and vinyl acetate (EVA) 15%, isoprene-isobutylene rubber 3%, isobutene-diene rubber regeneration 2%, anti-aging agent 3%, colour batch 2%.
The composition of glue paste: isoprene-isobutylene rubber 20%, natural rubber 10%, isobutene-diene rubber regeneration 30%, calcium carbonate 5%, talcum powder 5%, terpine resin 10%, petroleum resin 4%, Gum Rosin 5%, polyisobutene 10%, dibutylester 1%.
(1) get above-mentioned polyvinyl membrane component, after mixing, extrude through twin screw extruder, obtain the polyethylene based film that thickness is 0.4mm, extrusion temperature is 170～190 ℃.
(2) get as above glue paste component, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude and be applied on 60～80 ℃ the polyethylene based film that step (1) obtains, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.6mm.
It reaches 40.0N/cm to the back of the body stripping strength product that makes, and the base material tensile strength is at 23MPa.
Embodiment 4
Polyvinyl constituent of the film: Low Density Polyethylene 50%, high density polyethylene(HDPE) 20%, the multipolymer of ethene and vinyl acetate (EVA) 25%, regeneration natural rubber 2%, anti-aging agent 2%, colour batch 1%.
The composition of glue paste: isoprene-isobutylene rubber 10%, natural rubber 20%, isobutene-diene rubber regeneration 25%, regeneration natural rubber 5%, calcium carbonate 5%, talcum powder 8%, terpine resin 5%, petroleum resin 13%, polyisobutene 6%, dibutylester 3%.
(1) get above-mentioned polyvinyl membrane component, after mixing, extrude through twin screw extruder, obtain the polyethylene based film that thickness is 0.5mm, extrusion temperature is 170～190 ℃.
(2) get as above glue paste component, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude and be applied on 80～90 ℃ the polyethylene based film that step (1) obtains, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.3mm.
It reaches 34.0N/cm to the back of the body stripping strength product that makes, and the base material tensile strength is at 22MPa.
Embodiment 5:
Polyvinyl constituent of the film: Low Density Polyethylene 40%, high density polyethylene(HDPE) 45%, the multipolymer of ethene and vinyl acetate (EVA) 10%, isobutene-diene rubber regeneration 3%, anti-aging agent 1%, colour batch 1%.
The composition of glue paste: isoprene-isobutylene rubber 10%, natural rubber 10%, isobutene-diene rubber regeneration 10%, calcium carbonate 10%, talcum powder 15%, activated earth 5%, terpine resin 15%, petroleum resin 5%, Gum Rosin 10%, polyisobutene 8%, dibutylester 2%.
(1) get above-mentioned polyvinyl membrane component, after mixing, extrude through twin screw extruder, obtain the polyethylene based film that thickness is 0.8mm, extrusion temperature is 170～190 ℃.
(2) get as above glue paste component, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude on the polyethylene based film that is applied to 90～110 ℃, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.5mm.
It reaches 33.0N/cm to the back of the body stripping strength product that makes, and the base material tensile strength is at 23MPa.
Embodiment 6:
Polyvinyl constituent of the film: Low Density Polyethylene 50%, high density polyethylene(HDPE) 40%, the multipolymer of ethene and vinyl acetate (EVA) 5%, isoprene-isobutylene rubber 3%, anti-aging agent 1%, colour batch 1%.
The composition of glue paste: isoprene-isobutylene rubber 25%, natural rubber 20%, isobutene-diene rubber regeneration 5%, calcium carbonate 15%, talcum powder 10%, terpine resin 10%, petroleum resin 10%, polyisobutene 4%, dibutylester 1%.
(1) get above-mentioned polyvinyl membrane component, after mixing, extrude through twin screw extruder, obtain the polyethylene based film that thickness is 0.4mm, extrusion temperature is 170～190 ℃.
(2) get as above glue paste component, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude and be applied on 90～110 ℃ the polyethylene based film that step (1) obtains, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.4mm.
It reaches 36.0N/cm to the back of the body stripping strength product that makes, and the base material tensile strength is at 24MPa.
Embodiment 7
Polyvinyl constituent of the film: Low Density Polyethylene 60%, high density polyethylene(HDPE) 10%, the multipolymer of ethene and vinyl acetate (EVA) 20%, natural rubber 5%, anti-aging agent 3%, colour batch 2%.
The composition of glue paste: isoprene-isobutylene rubber 20%, natural rubber 20%, isobutene-diene rubber regeneration 10%, regeneration natural rubber 10%, talcum powder 10%, activated earth 5%, Gum Rosin 10%, petroleum resin 4%, polyisobutene 10%, dibutylester 1%.
(1) get above-mentioned polyvinyl membrane component, after mixing, extrude through twin screw extruder, obtain the polyethylene based film that thickness is 0.4mm, extrusion temperature is 170～190 ℃.
(2) get as above glue paste component, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude and be applied on 90～110 ℃ the polyethylene based film that step (1) obtains, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.6mm.
It reaches 39.0N/cm to the back of the body stripping strength product that makes, and the base material tensile strength is at 24MPa.
Embodiment 8
Polyvinyl constituent of the film: Low Density Polyethylene 50%, high density polyethylene(HDPE) 20%, the multipolymer of ethene and vinyl acetate (EVA) 25%, regeneration natural rubber 2%, anti-aging agent 2%, colour batch 1%.
The composition of glue paste: isoprene-isobutylene rubber 10%, natural rubber 20%, isobutene-diene rubber regeneration 25%, regeneration natural rubber 5%, talcum powder 15%, terpine resin 6%, petroleum resin 10%, polyisobutene 6%, dibutylester 3%.
(1) get above-mentioned polyvinyl membrane component, after mixing, extrude through twin screw extruder, obtain the polyethylene based film that thickness is 0.5mm, extrusion temperature is 170～190 ℃.
(2) get as above glue paste component, after mixing, add in the single screw extrusion machine, under 130～140 ℃ extrusion temperature, directly extrude and be applied on 70～90 ℃ the polyethylene based film that step (1) obtains, the compound polyethylene anticorrosion adhesive tape that obtains, the thickness of control glue paste layer is 0.3mm.
It reaches 34.0N/cm to the back of the body stripping strength product that makes, and the base material tensile strength is at 23MPa.
Claims (8)
1. a polyethylene anticorrosion adhesive tape is characterized in that described polyethylene anticorrosion adhesive tape is comprised of polyethylene based film and glue paste layer, and wherein the glue paste layer is to be mixed by forcing machine Extrusion Coating compound obtaining on polyethylene based film by each component of glue paste layer;
Described polyethylene based film is made by the component of following massfraction: Low Density Polyethylene 40 ~ 60%, high density polyethylene(HDPE) 10 ~ 45%, the multipolymer 5 ~ 25% of ethene and vinyl acetate, rubber A 0 ~ 5%, auxiliary agent 0 ~ 5%;
Described glue paste layer is made by the component of following massfraction: rubber B 30% ~ 60%, inorganic mineral 10 ~ 30%, tackifying resin 10 ~ 30%, polyisobutene 3 ~ 10%, softening agent 1 ~ 3%;
The component concentration of rubber A is 0 ~ 5% in the described polyethylene based film, wherein 0 refers to be infinitely close to 0 but be not 0;
Rubber A described in the described polyethylene based film is any one or the two or more mixing in natural rubber, isoprene-isobutylene rubber, regeneration natural rubber, the isobutene-diene rubber regeneration.
2. polyethylene anticorrosion adhesive tape as claimed in claim 1, the thickness that it is characterized in that described polyethylene based film is 0.2 ~ 0.8mm, the thickness of glue paste layer is 0.15 ~ 0.8mm.
3. polyethylene anticorrosion adhesive tape as claimed in claim 1 is characterized in that rubber B described in the described glue paste layer is any one or the two or more mixing in natural rubber, isoprene-isobutylene rubber, regeneration natural rubber, the isobutene-diene rubber regeneration.
4. polyethylene anticorrosion adhesive tape as claimed in claim 1 is characterized in that inorganic mineral described in the described glue paste layer is one or more the mixing in calcium carbonate, activated earth or the talcum powder.
5. polyethylene anticorrosion adhesive tape as claimed in claim 1 is characterized in that tackifying resin described in the described glue paste layer is one or more the mixing in terpine resin, petroleum resin or the Gum Rosin.
6. polyethylene anticorrosion adhesive tape as claimed in claim 1 is characterized in that softening agent is dioctyl ester or dibutylester described in the described glue paste layer.
7. polyethylene anticorrosion adhesive tape as claimed in claim 1 is characterized in that softening agent is dioctyl sebacate or Octyl adipate described in the described glue paste layer.
8. polyethylene anticorrosion adhesive tape as claimed in claim 1 is characterized in that auxiliary agent described in the described polyethylene based film is one or both in anti-aging agent, the colour batch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105985088A CN102051139B (en) | 2010-12-21 | 2010-12-21 | Polyethylene anticorrosion adhesive tape and preparation method thereof |
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| CN2010105985088A CN102051139B (en) | 2010-12-21 | 2010-12-21 | Polyethylene anticorrosion adhesive tape and preparation method thereof |
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| CN102051139B true CN102051139B (en) | 2013-04-24 |
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| CN102051139A (en) | 2011-05-11 |
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