CN115353829B - Polyethylene and cyclic copolymer composition for self-adhesive protective film and preparation method thereof - Google Patents
Polyethylene and cyclic copolymer composition for self-adhesive protective film and preparation method thereof Download PDFInfo
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- 239000000853 adhesive Substances 0.000 title claims abstract description 50
- 230000001681 protective effect Effects 0.000 title claims abstract description 50
- 239000000203 mixture Substances 0.000 title claims abstract description 49
- 229920001577 copolymer Polymers 0.000 title claims abstract description 39
- -1 Polyethylene Polymers 0.000 title claims abstract description 32
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 30
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims description 18
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 35
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 35
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 31
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 31
- 229920001400 block copolymer Polymers 0.000 claims description 27
- 125000004122 cyclic group Chemical group 0.000 claims description 26
- 239000003963 antioxidant agent Substances 0.000 claims description 13
- 230000003078 antioxidant effect Effects 0.000 claims description 12
- 239000000155 melt Substances 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 5
- 239000005977 Ethylene Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 230000000379 polymerizing effect Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000000265 homogenisation Methods 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 48
- 230000000052 comparative effect Effects 0.000 description 12
- 239000004743 Polypropylene Substances 0.000 description 5
- WKBPZYKAUNRMKP-UHFFFAOYSA-N 1-[2-(2,4-dichlorophenyl)pentyl]1,2,4-triazole Chemical compound C=1C=C(Cl)C=C(Cl)C=1C(CCC)CN1C=NC=N1 WKBPZYKAUNRMKP-UHFFFAOYSA-N 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010096 film blowing Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QYCGBAJADAGLLK-UHFFFAOYSA-N 1-(cyclohepten-1-yl)cycloheptene Chemical compound C1CCCCC=C1C1=CCCCCC1 QYCGBAJADAGLLK-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012968 metallocene catalyst Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920002742 polystyrene-block-poly(ethylene/propylene) -block-polystyrene Polymers 0.000 description 1
- 229920002743 polystyrene-poly(ethylene-ethylene/propylene) block-polystyrene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
Abstract
The invention belongs to the technical field of high molecular functional films, and provides a composition of polyethylene and a cyclic copolymer for a self-adhesive protective film, which comprises the following components in parts by weight: 50-85 parts of low-density polyethylene; 10-20 parts of linear low density polyethylene; 5-30 parts of cyclic copolymer. According to the invention, the cyclic copolymer is added, so that the self-adhesive protective film can obtain high stiffness and breadth on the basis of keeping the excellent transparency of polyethylene. The linear low-density polyethylene is used as a compatilizer, so that the homogenization of the two-phase distribution is facilitated when the low-density polyethylene and the cyclic copolymer are blended, and meanwhile, the linear low-density polyethylene and the low-density polyethylene have good compatibility, so that the performance of the blend is improved, finer-scale two-phase distribution is obtained, and the material with excellent and balanced comprehensive performance and high transparency and stiffness are obtained. The composition provided by the invention can be well applied to self-adhesive protective films, has the advantages of high rigidity, high transparency, high temperature resistance, long service life and the like, and has wide application prospects.
Description
Technical Field
The invention belongs to the technical field of C09J, and particularly relates to a composition of polyethylene and a cyclic copolymer for a self-adhesive protective film and a preparation method thereof.
Background
The self-adhesive protective film is a film with good adhesive property, and has great use value in life and production. At present, in order to obtain a self-adhesive protective film with excellent performance, the adopted method is realized by blending MLDPE and PP, for example, chinese patent publication No. CN103568425A discloses a stretching cover film with bearing capacity, and the layer adopts metallocene POE, LDPE and HDPE in a ratio of 3-6: 1:1, and the obtained film has excellent cold shrinkage performance and bearing performance; the Chinese patent of invention with the authorization number of CN105856764B discloses a high-temperature-resistant and stretching-resistant co-extruded film of a light guide plate, wherein a middle layer is prepared by blending LDPE, LLDPE and PP, and the mass ratio of LDPE, LLDPE and PP in the middle layer is 1:0.5 to 2: 1.5-3, the application range is wide, the viscosity is good, the adhesive light guide plate can be suitable for various adhesive light guide plates, and the adhesive light guide plate can resist instant high temperature, has strong stretch resistance and is easy to cut. However, the blend compatibility of the compositions of the films disclosed in the above patents is poor, the crystal point is not controllable, the stiffness of the protective film is not ideal, and the transparency of the protective film is obviously reduced. At present, the demands of the market for rigidity and transparency of the protective film cannot be met. Therefore, there is an urgent need to develop a polyethylene and cyclic copolymer composition for self-adhesive protective films and a preparation method thereof.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides a composition of polyethylene and cyclic copolymer for self-adhesive protective film, which comprises the following components in parts by weight: 50-85 parts of low-density polyethylene; 10-20 parts of linear low density polyethylene; 5-30 parts of cyclic copolymer.
Preferably, the components comprise, in parts by weight: 60 parts of low-density polyethylene; 0 parts of linear low density polyethylene; 20 parts of a cyclic copolymer.
As a preferred embodiment, the cyclic copolymer has a density of 0.94 to 1.02g/cm 3 。
Cyclic Block Copolymers (CBC)
As a preferred embodiment, the cyclic block copolymer is a styrenic cyclic block copolymer.
As a preferred embodiment, the styrenic cyclic block copolymer has a density of 0.94g/cm 3 。
As a preferred embodiment, the styrenic cyclic block copolymer is selected from one or more of SEBS, SEPS, S-EB/S-S, SEEPS.
As a preferred embodiment, the styrenic cyclic block copolymer is SEBS.
As a preferred embodiment, the styrenic cyclic block copolymer is selected from the group consisting of ViviOn, taiwan TM 8210XT。
Taiwan ViviOn TM 8210XT is a cyclic block copolymer prepared by perhydrogenation of styrene and conjugated olefin copolymers with special high efficiency catalysts, and has the advantages of extreme cleanliness and high transparency, excellent oxidation stability, excellent UV transmittance and tolerance, low water absorption and low density. Has good compatibility with linear low density polyethylene.
As a preferred embodiment, the cycloolefin copolymer has a density of 1.01g/cm 3 。
As a preferred embodiment, the cycloolefin copolymer is selected from the group consisting of TOPLASTIC 8007-600F, germany. TOPAS is a brand name of a cycloolefin copolymer (COC) developed by Bao Ji corporation, and is an amorphous transparent copolymer polymer having a cyclic olefin structure. TOPAS is a cycloolefin copolymer obtained by copolymerizing a bicycloheptene monomer and an ethylene monomer under the action of a metallocene catalyst. TOPAS has optical properties comparable to PMMA (polymethyl methacrylate, acrylic resin) and heat resistance higher than PC, and also has the advantages of better dimensional stability than PMMA and PC, and the like, improving water vapor tightness, increasing rigidity and heat resistance, being easy to endow cutting performance, and the like.
Linear low density polyethylene
The linear low-density polyethylene is prepared by using ethylene as main raw material and using a small amount of alpha-olefin to carry out gas-phase fluidized bed polymerization under the action of catalyst under high pressure or low pressure.
As a preferred embodiment, the linear low density polyethylene is obtained by polymerizing ethylene with C4 or C6 olefins.
As a preferred embodiment, the linear low density polyethylene has a density of 0.90g/cm 3 -0.92g/cm 3 。
As a preferred embodiment, the linear low density polyethylene has a density of 0.908g/cm 3 。
As a preferred embodiment, the linear low density polyethylene has a melt index MFR of 2.0g/min at 190℃under a load of 2.16 kg.
The linear low density polyethylene can be self-made or purchased, and the manufacturer is not particularly limited.
Low density polyethylene
Low density polyethylene, the lightest species in polyethylene resins, is a milky white, odorless, nontoxic, surface matt waxy particles. Has good softness, extensibility, electrical insulation, transparency, easy processing and certain air permeability. The chemical stability is better, alkali resistance and general organic solvent resistance.
As a preferred embodiment, the low density polyethylene has a density of 0.914g/cm 3 。
As a preferred embodiment, the low density polyethylene has a melt index MFR of 2.0g/min at 190℃under a load of 2.16 kg.
Antioxidant
In order to further improve the performance of the composition of the polyethylene and the cyclic copolymer for the self-adhesive protective film, the components also comprise 1-5 parts of antioxidant. Antioxidants are a class of chemical substances that, when present in only small amounts in a polymer system, retard or inhibit the progress of the oxidation process of the polymer, thereby preventing the aging of the polymer and extending its useful life.
The components of the invention are purchased by manufacturers and models:
low density polyethylene: petrochemical Shanghai with density of 0.914g/cm 3 The melt index MFR was 2.0g/min at 190℃under a load of 2.16 kg.
Linear low density polyethylene: petrochemical Shanghai with density of 0.908g/cm 3 The melt index MFR was 2.0g/min at 190℃under a load of 2.16 kg.
Cyclic block copolymers: taiwan polymerization chemicals Co., ltd. ViviOn TM 8210XT, density 0.94g/cm 3 The melt index MFR was 2g/min at 190℃under a load of 2.16 kg.
Cycloolefin copolymer: germany TOPAS TM 8007-600F, density 1.01g/cm 3 The melt index MFR was 12g/min at 230℃under a load of 2.16 kg.
Copolymerized polypropylene, yanshan petrochemical, K8303
High density polyethylene: dushanzi petrochemical DMDA-8008
Antioxidant 1010: nanjing chemical Co.Ltd
Compared with the prior art, the invention has the advantages that:
1. the invention provides a composition of polyethylene and cyclic copolymer for self-adhesive protective film, which comprises low-density polyethylene; the self-adhesive protective film is made of linear low-density polyethylene and a cyclic copolymer, wherein the cyclic copolymer is added to ensure that the self-adhesive protective film has high stiffness on the basis of keeping the excellent transparency of the polyethylene. The linear low-density polyethylene is used as a compatilizer, so that the homogenization of the two phases during the blending of the low-density polyethylene and the cyclic copolymer is facilitated, a more efficient bridge effect is achieved, meanwhile, the linear low-density polyethylene and the low-density polyethylene have good compatibility, the addition of the linear low-density polyethylene can improve the compatibility of the two phases, further improve the performance of the blend, simultaneously, the two-phase structure is miniaturized, finer-scale two-phase distribution is obtained, the performance defect of a single component is overcome, and a material with excellent and balanced comprehensive performance is obtained, so that high transparency and stiffness are obtained.
2. The composition of the polyethylene and the cyclic copolymer for the self-adhesive protective film and the preparation method thereof have the advantages of low VOC emission, environmental protection, energy conservation and emission reduction; meanwhile, the preparation method is simple and convenient, has strong repeatability and operability and is beneficial to large-scale production.
3. The composition can be used as an intermediate layer material of a self-adhesive protective film, and the self-adhesive protective film prepared by the composition has higher stiffness than a conventional polyethylene self-adhesive protective film, and the obtained self-adhesive protective film can be used for adhering materials such as light guide plates and the like and can well protect an optical microstructure. The composition of the polyethylene and the cyclic copolymer provided by the invention can be well applied to self-adhesive protective films, has the advantages of high rigidity, high transparency, high temperature resistance, long service life and the like, and has wide application prospects.
Detailed Description
Example 1
The embodiment provides a composition of polyethylene and a cyclic block copolymer for a self-adhesive protective film, which comprises the following components in parts by weight: 75 parts of low-density polyethylene; 20 parts of linear low density polyethylene; 5 parts of a cyclic block copolymer; 1010 parts of antioxidant.
The embodiment provides a preparation method of a composition of polyethylene and a cyclic block copolymer for a self-adhesive protective film, which specifically comprises the following steps: the annular segmented copolymer and the linear low-density polyethylene are stirred and mixed at a high speed, then the mixture is added into a double-screw extruder from a main feeding port, the low-density polyethylene and the antioxidant 1010 are added into the double-screw extruder from a 4 th zone side feeding port, the temperature of the extruder is set to 230 ℃, the screw rotating speed is 200 revolutions per minute, and the mixture is granulated by an underwater granulator after extrusion, and the mixture is dried to obtain the composition of the polyethylene and the annular segmented copolymer.
The embodiment also provides a preparation method of the self-adhesive protective film:
a three-layer coextrusion film blowing machine was used, 15kg of a polyethylene elastomer POE0540 was added to the outer layer hopper, 50kg of a composition of polyethylene and a cyclic block copolymer was added to the middle layer hopper, and 20kg of a composition of polyethylene and a cyclic block copolymer was added to the inner layer. The processing temperature of each screw is 200 ℃, the rotating speed is 250r/min for the outer layer, 350r/min for the middle layer and 350r/min for the inner layer, the materials are extruded by a three-layer coextrusion film blowing machine, a cylindrical film with the thickness of 50 mu m is blown on a die head by outer coextrusion, middle coextrusion and inner coextrusion, and the corresponding self-adhesive protective film is obtained after trimming and winding of the cylindrical film and is used for testing stiffness, crystal points and haze.
Example 2
The embodiment provides a composition of polyethylene and a cyclic block copolymer for a self-adhesive protective film, which comprises the following components in parts by weight: 70 parts of low-density polyethylene; 20 parts of linear low density polyethylene; 1 part of a cyclic block copolymer; 1010 parts of antioxidant.
The preparation method of the composition of polyethylene and cyclic block copolymer for self-adhesive protective film of this example and the preparation method of the self-adhesive protective film are the same as those of example 1.
Example 3
The embodiment provides a composition of polyethylene and a cyclic block copolymer for a self-adhesive protective film, which comprises the following components in parts by weight: 60 parts of low-density polyethylene; 20 parts of linear low density polyethylene; 1 part of a cyclic block copolymer; 1010 parts of antioxidant.
The preparation method of the composition of polyethylene and cyclic block copolymer for self-adhesive protective film of this example and the preparation method of the self-adhesive protective film are the same as those of example 1.
Example 4
The embodiment provides a composition of polyethylene and a cyclic block copolymer for a self-adhesive protective film, which comprises the following components in parts by weight: 60 parts of low-density polyethylene; 20 parts of linear low density polyethylene; 10 parts of cycloolefin copolymer; 1010 parts of antioxidant.
The embodiment provides a preparation method of a composition of polyethylene and a cyclic block copolymer for a self-adhesive protective film, which specifically comprises the following steps: the cycloolefin copolymer and the linear low-density polyethylene are stirred and mixed at a high speed, then the mixture is added into a double-screw extruder from a main feeding port, the low-density polyethylene is added into the double-screw extruder from a 4 th zone side feeding port, the temperature of the extruder is set to be 200 ℃, the rotating speed of the screw is set to be 250 revolutions per minute, and the mixture is granulated by an underwater granulator after extrusion, and then the mixture is dried to obtain the composition of the polyethylene and the annular block copolymer.
The preparation method of the self-adhesive protective film of this example is the same as that of example 1.
Comparative example 1
The contrast provides a composition for a self-adhesive protective film, which comprises the following components in parts by weight: 70 parts of low-density polyethylene; 30 parts of linear low density polyethylene; 1010 parts of antioxidant.
The embodiment provides a preparation method of a composition for a self-adhesive protective film, which specifically comprises the following steps: adding linear low-density polyethylene into a double-screw extruder, adding the low-density polyethylene into the double-screw extruder from a 4 th zone side feeding port, setting the temperature of the extruder to 230 ℃, setting the screw rotation speed to 200 revolutions per minute, granulating by an underwater granulator after extrusion, and drying to obtain the composition.
The preparation method of the self-adhesive protective film of this comparative example was the same as that of example 1.
Comparative example 2
The difference between this comparative example and example 1 is that:
the contrast provides a composition for a self-adhesive protective film, which comprises the following components in parts by weight: 60 parts of low-density polyethylene; 20 parts of linear low density polyethylene; 20 parts of high-density polyethylene and 1010 parts of antioxidant.
Comparative example 3
The difference between this comparative example and example 1 is that:
the contrast provides a composition for a self-adhesive protective film, which comprises the following components in parts by weight: 80 parts of low-density polyethylene; 1010 parts of antioxidant.
Comparative example 4
The difference between this comparative example and example 1 is that:
the contrast provides a composition for a self-adhesive protective film, which comprises the following components in parts by weight: 60 parts of low-density polyethylene; 20 parts of linear low density polyethylene; 20 parts of copolymerized polypropylene and 1010 parts of antioxidant.
Performance test:
1. modulus of elasticity: the elastic modulus of the self-adhesive protective films described in examples 1 to 4 and comparative examples 1 to 4 was measured with reference to GB/T14694-1993, and the results are shown in Table 1.
2. Crystal point: the crystal points of the self-adhesive protective films described in examples 1 to 4 and comparative examples 1 to 4 were measured with reference to GB/T10003-2008, and the results are shown in Table 1.
3. Haze: the haze of the self-adhesive protective films described in examples 1 to 4 and comparative examples 1 to 4 was measured with reference to GB/T2410-2008, and the results are shown in Table 1.
4. The self-adhesive protective films described in examples 1 to 4 and comparative examples 1 to 4 were adhered to PMMA sheets at 80℃for 30 minutes, and the presence or absence of foaming effect was measured, and the results are shown in Table 1.
TABLE 1 Performance test results
Claims (4)
1. A composition of polyethylene and cyclic copolymer for self-adhesive protective film, characterized in that: the coating comprises the following components in parts by weight: 50-85 parts of low-density polyethylene; 10-20 parts of linear low density polyethylene; 5-30 parts of a cyclic copolymer; 1-5 parts of antioxidant.
The density of the low density polyethylene is 0.914g/cm 3 ；
The melt index MFR of the low density polyethylene is 2.0g/min at 190℃under a load of 2.16 kg;
the cyclic copolymer is selected from cyclic block copolymer or cycloolefin copolymer;
the cyclic block copolymer is a styrene-based cyclic block copolymer, and the density of the styrene-based cyclic block copolymer is 0.94g/cm 3 The method specifically comprises SEBS;
the cycloolefin copolymer has a density of 1.01g/cm 3 The brand of the cycloolefin copolymer is Germany TOPLASTMASTM 8007-600F;
the linear low density polyethylene has a density of 0.90g/cm 3 -0.92g/cm 3 ；
The linear low density polyethylene has a melt index MFR of 1g/min to 3g/min at 190℃under a load of 2.16 kg.
2. The composition of polyethylene and cyclic copolymer for self-adhesive protective film according to claim 1, wherein: the linear low density polyethylene is obtained by polymerizing ethylene with a C4 or C6 olefin.
3. A process for the preparation of a composition of polyethylene and a cyclic copolymer for self-adhesive protective films according to any one of claims 1 to 2, characterized in that: the method comprises the following steps: mixing the cyclic copolymer with linear low-density polyethylene and an antioxidant, adding the mixture into a double-screw extruder, adding the low-density polyethylene into the double-screw extruder, granulating the mixture by an underwater granulator after extrusion, and drying the mixture to obtain the composition.
4. A process for the preparation of a composition of polyethylene and a cyclic copolymer for self-adhesive protective films according to claim 3, characterized in that: the temperature of the twin-screw extruder is set to be 200-240 ℃ and the screw rotating speed is 200-250 revolutions per minute.
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| CN104497900A (en) * | 2014-12-01 | 2015-04-08 | 张家港康得新光电材料有限公司 | Self-adhering protecting film and application thereof in adhering protecting smooth-surfaced PC board |
| CN106905892A (en) * | 2016-09-23 | 2017-06-30 | 厦门内加湖新材料科技有限公司 | A kind of adhesive based on non-polar, polyolefin resin |
| CN107142032A (en) * | 2017-05-03 | 2017-09-08 | 张家港康得新光电材料有限公司 | Adhesive protecting film |
| CN109536068A (en) * | 2018-11-16 | 2019-03-29 | 宁波激智科技股份有限公司 | A kind of high viscous protective film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497900A (en) * | 2014-12-01 | 2015-04-08 | 张家港康得新光电材料有限公司 | Self-adhering protecting film and application thereof in adhering protecting smooth-surfaced PC board |
| CN106905892A (en) * | 2016-09-23 | 2017-06-30 | 厦门内加湖新材料科技有限公司 | A kind of adhesive based on non-polar, polyolefin resin |
| CN107142032A (en) * | 2017-05-03 | 2017-09-08 | 张家港康得新光电材料有限公司 | Adhesive protecting film |
| CN109536068A (en) * | 2018-11-16 | 2019-03-29 | 宁波激智科技股份有限公司 | A kind of high viscous protective film and preparation method thereof |
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