CN112724850A - Composite adhesive tape and preparation method thereof - Google Patents
Composite adhesive tape and preparation method thereof Download PDFInfo
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- CN112724850A CN112724850A CN202110045802.4A CN202110045802A CN112724850A CN 112724850 A CN112724850 A CN 112724850A CN 202110045802 A CN202110045802 A CN 202110045802A CN 112724850 A CN112724850 A CN 112724850A
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- 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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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- 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
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/06—Crosslinking by radiation
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- 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
- C09J2423/006—Presence of polyolefin in the substrate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a composite adhesive tape and a preparation method thereof, wherein the composite adhesive tape comprises a reinforcing layer and an adhesive layer attached to the reinforcing layer, and the reinforcing layer comprises the following components in parts by weight: 100-200 parts of polyolefin rubber composition, 30-80 parts of polyolefin plastic composition, 5-30 parts of tackifying assistant, 80-250 parts of filler, 1-10 parts of processing assistant, 10-30 parts of operating oil and 0.5-10 parts of irradiation crosslinking assistant, wherein the adhesive layer comprises the following components in parts by weight: 100 parts of polyolefin rubber composition, 10-50 parts of polyolefin plastic composition, 80-350 parts of tackifying assistant, 80-250 parts of filler and 1-5 parts of processing assistant. The composite adhesive tape provided by the invention has good heat resistance and insulativity, and also has excellent weather resistance, glue overflow resistance, aging resistance, wear resistance and sealing and waterproof properties.
Description
Technical Field
The invention relates to the technical field of new materials, in particular to a composite adhesive tape and a preparation method thereof.
Background
The waterproof insulating tape is generally used in the fields of waterproof sealing of a power cable middle head, wire connection, cable metal joint protection, electrical insulation protection, communication base stations and the like, so that the requirements on the electrical insulating property and the bonding sealing waterproof property of the product are high.
At present, the waterproof insulating adhesive tape on the market is generally formed by compounding an unvulcanized inner layer adhesive tape and an unvulcanized outer layer adhesive tape, wherein one layer is a wear-resistant reinforcing layer based on ethylene propylene diene monomer rubber, and the other layer is a sticky bonding layer based on butyl rubber. The adhesive tape is mainly used for the intermediate joint of the cable accessory initially, and the intermediate joint is buried underground for a long time, so that the adhesive tape cannot be aged and corroded in natural environment such as wind, sunshine, rain and the like, and the applicability can meet the requirement. In recent years, with the rapid development of the 4G and 5G communication industries, the product has wide application in communication base stations due to the excellence of waterproof and the convenience of operation. But because the ectonexine of this product is not vulcanized, especially the outdoor application environment of present communication base station, along with the extension of live time, receive outdoor sunshine insolate, the environmental action such as rainwater erosion, the adhesive strength, the insulating properties of product can decline gradually, and ageing-resistant performance is relatively poor, because the inlayer is viscous flow unvulcanized layer, this product can appear the condition of tangling and spilling gluey when meetting high temperature environment in addition, influences waterproof sealing performance.
Disclosure of Invention
The invention mainly aims to provide a composite adhesive tape, aiming at solving the problem that the existing waterproof insulating adhesive tape cannot be used in outdoor environment.
In order to achieve the purpose, the invention provides a composite adhesive tape, which comprises a reinforcing layer and an adhesive layer attached to the reinforcing layer, wherein the reinforcing layer comprises the following raw material components in parts by weight:
the raw material components of the bonding layer comprise the following components in parts by weight:
optionally, the raw material components of the reinforcing layer and the adhesive layer respectively include, by weight:
0.5-10 parts of an anti-aging agent;
0.5-10 parts of antioxidant.
Optionally, the polyolefin rubber composition of the reinforcement layer is selected from one or more of ethylene propylene diene monomer, butyl rubber, nitrile rubber, neoprene rubber.
Optionally, the polyolefin plastic composition of the reinforcement layer is one or more of a polyolefin elastomer, a polyethylene plastic, a high-density polyethylene plastic, a styrene-butadiene-styrene block copolymer, a styrene-isoprene-styrene block copolymer, and an ethylene-vinyl acetate copolymer.
Optionally, the polyolefin rubber composition of the bonding layer is selected from one or more of ethylene propylene diene monomer rubber, butyl rubber and polyisobutylene rubber.
Optionally, the irradiation crosslinking agent is selected from one or two of triallyl isocyanurate and trimethylolpropane trimethacrylate.
Optionally, the tackifying assistant is selected from one or more of terpene resins, polybutene and polyisobutylene.
Optionally, the processing aid is selected from one or two of stearic acid and zinc stearate; the process oil is selected from one or more of white oil, paraffin oil 2280, paraffin oil 300, and paraffin oil 25110.
Optionally, the antioxidant is selected from one or two of antioxidant RD and antioxidant MB.
The invention also provides a preparation method of the composite adhesive tape, which is used for preparing the reinforcing layer and the bonding layer attached to the reinforcing layer, and is characterized by comprising the following steps:
the raw material components of the enhancement layer are placed into an internal mixer for internal mixing for 20-40min, and are taken out of the pot at the temperature of 120-;
discharging the slices from the pan by an open mill, and cutting the slices into strips for later use;
extruding the enhancement layer adhesive tape by using an extruder at the extrusion temperature of 120 ℃ and 150 ℃, and coiling for later use;
100 parts of polyolefin rubber composition, 10-50 parts of polyolefin plastic composition, 80-250 parts of filler and 1-5 parts of processing aid in the raw material components of the bonding layer are placed into an internal mixer for internal mixing, and the mixture is taken out of the pot after internal mixing is carried out to 120 ℃ and 150 ℃ to prepare base rubber;
then adding the base glue into a kneading machine, adding 80-350 parts of tackifying assistant, vacuumizing and kneading at the kneading temperature of 120-150 ℃ to prepare the adhesive glue for later use;
extruding the bonding layer by an extruder at the extrusion temperature of 100-;
irradiating the semi-finished product of the composite waterproof insulating adhesive tape by a cobalt source with the dosage of 10-30kGy to obtain the composite adhesive tape after irradiation.
According to the technical scheme, the polyolefin plastic composition is added into the reinforcing layer of the composite adhesive tape on the basis of the polyolefin rubber composition, so that the reinforcing layer can be modified through irradiation crosslinking, the strength of the composite adhesive tape is improved after irradiation crosslinking, the hardness is improved, and the wear resistance and the aging resistance are obviously improved. Compared with chemical vulcanization in the prior art, the irradiation crosslinking process is simple, small molecular impurities are not generated in the vulcanization process, the insulativity is stronger, and the aging resistance is better. Meanwhile, the components of the adhesive layer of the composite adhesive tape are also selected by adding the polyolefin plastic composition on the basis of the polyolefin rubber composition, so that the adhesive layer can be modified through irradiation crosslinking, has a certain crosslinking degree after irradiation, and is not easy to overflow at high temperature or after long working time. Furthermore, the irradiated composite adhesive tape reinforcing layer and the bonding layer generate certain crosslinking, the bonding between the reinforcing layer and the bonding layer is tighter, the bonding performance is better, the peel strength is higher, and the waterproof sealing performance is obviously improved. The composite adhesive tape provided by the invention has good heat resistance and insulativity, and also has excellent weather resistance, glue overflow resistance, aging resistance, wear resistance and sealing and waterproof properties.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of the preparation process of the composite tape of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a composite adhesive tape which has good heat resistance and insulativity, and also has excellent weather resistance, glue overflow resistance, aging resistance, wear resistance and sealing and waterproof properties.
In the embodiment of the invention, the composite adhesive tape comprises a reinforcing layer and an adhesive layer attached to the reinforcing layer, wherein the reinforcing layer comprises the following raw material components in parts by weight:
the raw material components of the bonding layer comprise the following components in parts by weight:
according to the technical scheme, the polyolefin plastic composition is added into the reinforcing layer of the composite adhesive tape on the basis of the polyolefin rubber composition, so that the reinforcing layer can be modified through irradiation crosslinking, the strength of the composite adhesive tape is improved after irradiation crosslinking, the hardness is improved, and the wear resistance and the aging resistance are obviously improved. Compared with chemical vulcanization in the prior art, the irradiation crosslinking process is simple, small molecular impurities are not generated in the vulcanization process, the insulativity is stronger, and the aging resistance is better. Meanwhile, the components of the adhesive layer of the composite adhesive tape are also selected by adding the polyolefin plastic composition on the basis of the polyolefin rubber composition, so that the adhesive layer can be modified through irradiation crosslinking, has a certain crosslinking degree after certain irradiation, and is not easy to overflow glue at high temperature or after long working time. Furthermore, the irradiated composite adhesive tape reinforcing layer and the bonding layer generate certain crosslinking, the bonding between the reinforcing layer and the bonding layer is tighter, the bonding performance is better, the peel strength is higher, and the waterproof sealing performance is obviously improved. The composite adhesive tape provided by the invention has good heat resistance and insulativity, and also has excellent weather resistance, glue overflow resistance, aging resistance, wear resistance and sealing and waterproof properties.
Optionally, the raw material components of the reinforcing layer and the adhesive layer respectively include, by weight:
0.5-10 parts of an anti-aging agent;
0.5-10 parts of antioxidant.
Optionally, the polyolefin rubber composition of the reinforcement layer is selected from one or more of ethylene propylene diene monomer, butyl rubber, nitrile rubber, neoprene rubber. Preferably, the polyolefin rubber composition of the reinforcement layer is ethylene propylene diene monomer rubber and butyl rubber; wherein, the ethylene propylene diene monomer is 50 to 100 parts by weight, such as 50 parts, 60 parts, 70 parts, 80 parts, 90 parts, 100 parts and any value between the parts; the butyl rubber is 50 to 100 parts, such as 50 parts, 60 parts, 70 parts, 80 parts, 90 parts, 100 parts and any value therebetween.
Optionally, the polyolefin plastic composition of the reinforcement layer is one or more of polyolefin elastomer (POE), polyethylene Plastic (PE), high density polyethylene plastic (HDPE), styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), ethylene-vinyl acetate copolymer (EVA).
Optionally, the polyolefin rubber composition of the bonding layer is selected from one or more of ethylene propylene diene monomer rubber, butyl rubber and polyisobutylene rubber. Preferably, the polyolefin rubber composition of the adhesive layer is ethylene propylene diene rubber and butyl rubber.
Optionally, the irradiation crosslinking agent is selected from one or two of triallyl isocyanurate (TAIC), trimethylolpropane trimethacrylate (TMPTMA).
Optionally, the tackifying assistant is selected from one or more of terpene resins, polybutene and polyisobutylene. Optionally, the terpene resin is selected from one or two of terpene resin T-100 and terpene resin S-125.
Optionally, the processing aid is selected from one or both of stearic acid and zinc stearate.
Optionally, the process oil is selected from one or more of white oil, paraffin oil 2280, paraffin oil 300, and paraffin oil 25110.
Optionally, the filler is selected from one or more of calcium carbonate, talcum powder, pottery clay, kaolin and white carbon black.
Optionally, the antioxidant is selected from one or two of antioxidant RD and antioxidant MB.
Optionally, the antioxidant is selected from antioxidant 1010.
The invention further provides a method for preparing a composite adhesive tape, referring to fig. 1, for preparing a reinforcing layer and an adhesive layer attached to the reinforcing layer, the method comprising the following steps:
the raw material components of the enhancement layer are placed into an internal mixer for internal mixing for 20-40min, and are taken out of the pot at the temperature of 120-;
discharging the slices from the pan by an open mill, and cutting the slices into strips for later use;
extruding the enhancement layer adhesive tape by using an extruder at the extrusion temperature of 120 ℃ and 150 ℃, and coiling for later use;
100 parts of polyolefin rubber composition, 10-50 parts of polyolefin plastic composition, 80-250 parts of filler and 1-5 parts of processing aid in the raw material components of the bonding layer are placed into an internal mixer for internal mixing, and the mixture is taken out of the pot after internal mixing is carried out to 120 ℃ and 150 ℃ to prepare base rubber;
then adding the base glue into a kneading machine, adding 80-350 parts of tackifying assistant, vacuumizing and kneading at the kneading temperature of 120-150 ℃ to prepare the adhesive glue for later use;
extruding the bonding layer by an extruder at the extrusion temperature of 100-;
irradiating the semi-finished product of the composite waterproof insulating adhesive tape by a cobalt source with the dosage of 10-30kGy to obtain the composite adhesive tape after irradiation.
Embodiments of the present invention will be described in detail below with reference to specific examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
The reinforcing layer of the composite tape of example 1 comprises the following raw material components in parts by weight: 100 parts of butyl rubber, 50 parts of ethylene propylene diene monomer, 10 parts of terpene resin S-125, 100 parts of calcium carbonate, 20 parts of paraffin oil 2280, 2 parts of stearic acid, 1 part of antioxidant MB, 1 part of antioxidant 1010, 50 parts of HDPE and 1 part of TAIC.
The raw material components of the adhesive layer of the composite tape of example 1 comprise, by weight: 40 parts of butyl rubber, 60 parts of ethylene propylene diene monomer, 10 parts of POE elastomer, 150 parts of polyisobutylene PB1300, 150 parts of calcium carbonate, 100 parts of terpene resin S-125, 2 parts of stearic acid, 1 part of antioxidant MB and 1 part of antioxidant 1010.
The preparation method of the composite tape of example 1 comprises:
putting 100 parts of butyl rubber, 50 parts of ethylene propylene diene monomer, 10 parts of terpene resin S-125, 100 parts of calcium carbonate, 20 parts of paraffin oil 2280, 2 parts of stearic acid, 1 part of antioxidant MB, 1 part of antioxidant 1010, 50 parts of HDPE and 1 part of TAIC (polyethylene terephthalate) which are raw materials of the reinforcing layer into an internal mixer for internal mixing for 30min, and taking out of the internal mixer when the temperature reaches 130 ℃;
discharging the slices from the pan by an open mill, and cutting the slices into strips for later use;
extruding the reinforced layer adhesive tape by using an extruder at the extrusion temperature of 130 ℃, and rolling up for later use;
putting 40 parts of butyl rubber, 60 parts of ethylene propylene diene monomer, 10 parts of POE elastomer, 150 parts of calcium carbonate, 2 parts of stearic acid, 1 part of antioxidant MB and 1 part of antioxidant 1010 in the raw material components of the bonding layer into an internal mixer for internal mixing, and taking out the raw material components from the internal mixer after the internal mixing is carried out to 130 ℃ to prepare base rubber;
then adding the base glue into a kneader while the base glue is hot, adding 100 parts of terpene resin S-125 and 150 parts of PB1300, vacuumizing and kneading at the kneading temperature of 130 ℃ to prepare the bonding glue for later use;
extruding the adhesive layer by an extruder at the extrusion temperature of 130 ℃, attaching the adhesive layer to the extruded reinforced layer adhesive tape, and preparing a semi-finished product of the composite waterproof insulating adhesive tape by machine rolling, attaching and rolling;
and irradiating the semi-finished product of the composite waterproof insulating adhesive tape by a cobalt source with the dosage of 20kGy to obtain the composite adhesive tape of the embodiment 1.
The material formulations of the reinforcing layer and the adhesive layer of the composite tape of each example and the composite tape of comparative example are shown in table 1 and table 2, respectively, wherein the composite tape of comparative example 1 is not radiation-crosslinked, the reinforcing layer of the composite tape of comparative example 2 and comparative example 3 is not added with the polyolefin plastic composition, the reinforcing layer of the composite tape of comparative example 4 is added with an excessive amount of the polyolefin plastic composition, and the adhesive layer of the composite tape of comparative example 5 and comparative example 6 is not added with the polyolefin plastic composition, according to the formulations of table 1 and table 2, and referring to the preparation method of example 1, other composite tapes of examples 2 to 23 and composite tapes of comparative examples 1 to 6 are prepared, respectively, and are not repeated herein.
TABLE 1 formulation and irradiation conditions for reinforcing layer of composite tape of each example
TABLE 2 formulation of adhesive layer for composite tapes of the examples
Performance testing
The composite tapes of examples 1 to 23 and the composite tapes of comparative examples 1 to 6 obtained as described above were subjected to performance tests including tensile strength, elongation at break, hardness, puncture strength, 180 ° peel strength to steel sheet and water resistance tests, and thermal stress cracking resistance at 130 ℃ for 3 hours and ozone resistance at 40 ℃ for 70 hours and an ozone concentration of 500ppm, respectively, and the test results are shown in table 3.
According to the results in table 3, it can be seen that the ethylene propylene diene monomer and the polyolefin plastic composition are added to the reinforcing layer on the basis of the butyl rubber, so that the reinforcing layer can be modified by irradiation crosslinking, the strength and hardness of the composite tape are improved after irradiation crosslinking, the main mechanical properties such as tensile strength, elongation at break, breakdown strength and 180-degree peel strength of the composite tape are improved to a great extent, and meanwhile, the polyolefin plastic composition is added to the polyolefin rubber composition as the adhesive layer component of the composite tape, so that the adhesive layer of the composite tape has a certain crosslinking degree after certain irradiation, and is not easy to overflow at high temperature or after long working time. The irradiated composite adhesive tape reinforcing layer and the irradiated adhesive layer generate certain crosslinking, the two layers are bonded more tightly, the bonding performance is better, the peeling strength is higher, and the waterproof sealing performance is obviously improved. The mechanical property of the composite adhesive tape which is not subjected to irradiation crosslinking in the comparative example 1 is poor, adhesive overflow can occur when the composite adhesive tape is used in a high-temperature environment, the mechanical property of the composite adhesive tape which is not added with the polyolefin plastic composition in the added layers in the comparative examples 2 to 4 and the mechanical property of the composite adhesive tape which is not added with the polyolefin plastic composition in the adhesive layers in the comparative examples 5 and 6 are poor, and the waterproof property is also poor.
TABLE 3 Performance test results of the composite tapes of the respective examples and comparative examples
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The composite adhesive tape is characterized by comprising a reinforcing layer and an adhesive layer attached to the reinforcing layer, wherein the reinforcing layer comprises the following raw material components in parts by weight:
the raw material components of the bonding layer comprise the following components in parts by weight:
2. the composite tape of claim 1, wherein the raw material components of the reinforcing layer and the adhesive layer respectively comprise, in parts by weight:
0.5-10 parts of an anti-aging agent;
0.5-10 parts of antioxidant.
3. The composite tape of claim 2 wherein the polyolefin rubber composition of the reinforcing layer is selected from one or more of ethylene propylene diene monomer, butyl rubber, nitrile rubber, neoprene rubber.
4. The composite tape of claim 3, wherein the polyolefin plastic composition of the reinforcing layer is one or more of polyolefin elastomer, polyethylene plastic, high density polyethylene plastic, styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, and ethylene-vinyl acetate copolymer.
5. The composite tape of claim 4 wherein the polyolefin rubber composition of the adhesive layer is selected from one or more of ethylene propylene diene monomer, butyl rubber, and polyisobutylene rubber.
6. The composite tape of claim 5 wherein the radiation crosslinking agent is selected from one or both of triallylisocyanurate and trimethylolpropane trimethacrylate.
7. The composite tape of claim 6 wherein the adhesion promoter is selected from one or more of terpene resins, polybutene, and polyisobutylene.
8. The composite tape of claim 7 wherein the processing aid is selected from one or both of stearic acid and zinc stearate; the process oil is selected from one or more of white oil, paraffin oil 2280, paraffin oil 300, and paraffin oil 25110.
9. The composite tape according to claim 8, wherein the antioxidant is one or two selected from the group consisting of antioxidant RD and antioxidant MB.
10. A preparation method of a composite adhesive tape is used for preparing a reinforcing layer and an adhesive layer attached to the reinforcing layer, and is characterized by comprising the following steps:
the raw material components of the enhancement layer are placed into an internal mixer for internal mixing for 20-40min, and are taken out of the pot at the temperature of 120-;
discharging the slices from the pan by an open mill, and cutting the slices into strips for later use;
extruding the enhancement layer adhesive tape by using an extruder at the extrusion temperature of 120 ℃ and 150 ℃, and coiling for later use;
100 parts of polyolefin rubber composition, 10-50 parts of polyolefin plastic composition, 80-250 parts of filler and 1-5 parts of processing aid in the raw material components of the bonding layer are placed into an internal mixer for internal mixing, and the mixture is taken out of the pot after internal mixing is carried out to 120 ℃ and 150 ℃ to prepare base rubber;
then adding the base glue into a kneading machine, adding 80-350 parts of tackifying assistant, vacuumizing and kneading at the kneading temperature of 120-150 ℃ to prepare the adhesive glue for later use;
extruding the bonding layer by an extruder at the extrusion temperature of 100-;
irradiating the semi-finished product of the composite waterproof insulating adhesive tape by a cobalt source with the dosage of 10-30kGy to obtain the composite adhesive tape after irradiation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115678133A (en) * | 2022-11-09 | 2023-02-03 | 宁波裕江特种胶带有限公司 | Sizing material for rail transit shield door synchronous belt and preparation method thereof |
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| CN115678133A (en) * | 2022-11-09 | 2023-02-03 | 宁波裕江特种胶带有限公司 | Sizing material for rail transit shield door synchronous belt and preparation method thereof |
| CN115678133B (en) * | 2022-11-09 | 2024-02-13 | 宁波裕江特种胶带有限公司 | Sizing material for synchronous belt of track traffic shielding door and preparation method thereof |
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| CN112724850B (en) | 2022-11-08 |
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