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CN109651968B - Environment-friendly adhesive tape and preparation method thereof - Google Patents

Environment-friendly adhesive tape and preparation method thereof Download PDF

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Publication number
CN109651968B
CN109651968B CN201811590825.8A CN201811590825A CN109651968B CN 109651968 B CN109651968 B CN 109651968B CN 201811590825 A CN201811590825 A CN 201811590825A CN 109651968 B CN109651968 B CN 109651968B
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China
Prior art keywords
parts
adhesive tape
environment
friendly adhesive
glass fiber
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CN201811590825.8A
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Chinese (zh)
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CN109651968A (en
Inventor
王旭辉
陈嘉辉
潘炜
邱仕凯
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Ningbo Xinliu Mai New Material Technology Co ltd
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Ningbo Liumai New Material Technology Co ltd
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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
    • C09J7/21—Paper; Textile fabrics
    • 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
    • C09J11/04—Non-macromolecular additives inorganic
    • 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
    • C09J123/26—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 modified by chemical after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • 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
    • 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
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
    • 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
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • 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
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)

Abstract

An environment-friendly adhesive tape comprises a release film, a base material and a composite adhesive coated between the base material and the release film; the composite adhesive is prepared from the following raw materials in parts by weight: 25-80 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 3-12 parts of aromatic polycarbonate resin, 0.2-3.6 parts of rubber modified glass fiber, 0.8-5 parts of filler, 1.2-3 parts of graphene oxide, 1.2-3.5 parts of compatilizer, 1-5 parts of dispersant and 0.5-2.1 parts of toughening agent. The environment-friendly adhesive tape disclosed by the invention does not discharge harmful substances in the preparation process, keeps high viscosity and mechanical strength within the use temperature range of 80-150 ℃, and does not generate harmful substances to pollute the environment; in addition, the sealing gasket has good flexibility, adhesive force and structural displacement following performance, and has good sealing effect, convenient construction and wide market application prospect. The invention also discloses a preparation method of the environment-friendly adhesive tape.

Description

Environment-friendly adhesive tape and preparation method thereof
Technical Field
The invention relates to the technical field of adhesive tapes, in particular to an environment-friendly adhesive tape and a preparation method thereof.
Background
In the field of thermal energy engineering, the leakage of high-temperature materials occurs to pipeline equipment due to the long-term operation of high-temperature pipelines and equipment, or the leakage phenomenon of high-temperature steam easily occurs to a conveying pipeline due to the long-term exposure to the severe outdoor environment. In order to ensure the safe operation and save resources, preventive measures or emergency measures need to be made in a targeted manner.
With the change of electronic products, the performance requirements of some occasions on double-sided adhesive tapes are higher and higher, especially the requirement on high temperature resistance, and the high temperature resistance mainly means that an adherend is ensured not to fall off and has certain peel strength under a high-temperature environment. The high-temperature resistant double-sided adhesive tape has wide application, is mainly used in places such as engineering machinery, automobile instrument panel sealing foam pads, washing machine sealing pads and the like, and is also used in various production processes of electronic parts of digital products and the pasting of nameplates or panels of manufacturing tools and parts. In particular, the double-sided adhesive tape is excellent in heat resistance and complete in variety, and can be used for temporary fixation, shielding, protection and transportation of film parts and the like in a heating process, and also widely used for high-temperature insulation protection, reinforcement protection and the like in the industries of electronic appliances, instruments and the like.
When the pipeline has the phenomena of leakage, overflow and water leakage, a plurality of methods which are adopted in the prior art, such as stopping for overhauling, replacing or temporarily closing for re-welding, or adopting a temporary sealing piece for plugging, and the like, are easy to cause production interruption when the pipeline is stopped, overhauled, replaced or temporarily closed for re-welding special parts and objects with complex shapes of various special-shaped pipelines, flanges, valves, spherical joints, screws, screw caps and the like, and bring huge economic loss to the whole plant; and by adopting a temporary sealing method, the sealing performance of the existing sealing measure is limited, and the secondary occurrence of the phenomenon of fluid leakage is difficult to avoid, so that immeasurable loss and damage are brought to production and environment. In addition, the existing method is time-consuming, labor-consuming, high in labor cost and low in construction efficiency.
Therefore, a method or product for eliminating the leakage phenomenon at the pipeline or other special parts by rapid construction is needed.
Disclosure of Invention
In view of the defects of the prior art, the invention mainly aims to provide the environment-friendly adhesive tape and the preparation method thereof, the environment-friendly adhesive tape has the advantages that diphenyl hexa-polymethylsiloxane modified polyethylene resin and aromatic polycarbonate resin are selected as basic adhesive resins, organic and inorganic compounded flame-retardant high-temperature-resistant materials are adopted as additives, no solvent is required to be added, harmful substances are not discharged in the preparation process, and in the construction and use process, the prepared environment-friendly adhesive tape keeps high viscosity and mechanical strength in the temperature range of 80-150 ℃, and the environment is not polluted by the harmful substances; in addition, the prepared environment-friendly adhesive tape has good flexibility, adhesive force and structural displacement following performance on the surface of a high-temperature adherend subjected to thermal expansion and cold contraction and mechanical deformation, can achieve the sealing effect, plays roles in high-temperature flame retardance and reinforcement protection, is convenient to construct, saves manpower and material resources, and has wide market application prospect.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
an environment-friendly adhesive tape comprises a release film, a base material and a composite adhesive coated between the base material and the release film, wherein the base material is a flame-retardant non-woven fabric; the composite adhesive is prepared from the following raw materials in parts by weight: 25-80 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 3-12 parts of aromatic polycarbonate resin, 0.2-3.6 parts of rubber modified glass fiber, 0.8-5 parts of filler, 1.2-3 parts of graphene oxide, 1.2-3.5 parts of compatilizer, 1-5 parts of dispersant and 0.5-2.1 parts of toughening agent.
Preferably, the diphenyl hexa-methicone modified polyethylene resin is prepared by the following steps: adding phenol, formaldehyde and ammonia water into a reaction kettle at 85 ℃, reacting for 1.5h, distilling under reduced pressure to 55 ℃, adding diphenyl hexamethyl siloxane and polyethylene resin, stirring uniformly, and sequentially adopting phenol and deionized water to clean residual liquid to obtain the diphenyl hexamethyl siloxane modified polyethylene resin. The diphenylhexa-polymethylsiloxane modified polyethylene resin enables the adhesive to have high viscosity, and simultaneously, the viscosity of the adhesive is kept to be small in a wider temperature range due to the action of methyl siloxane groups, and meanwhile, the flame retardant property of the adhesive is further improved by utilizing the steric hindrance action of phenyl functional groups.
The adhesive is prevented from cracking at local positions due to temperature accumulation when the adhesive is heated at high temperature by utilizing the good heat-conducting property of the graphene oxide, and the mechanical strength of the adhesive is further improved by utilizing the high-strength property of the graphene oxide.
Preferably, the ratio of the phenol, the formaldehyde, the ammonia water, the diphenyl hexa-polymethylsiloxane and the polyethylene resin is 30: 1.2: 2.6: 8: 45.
preferably, the rubber modified glass fiber is at least one of chloroprene rubber modified glass fiber, nitrile rubber modified glass fiber or styrene butadiene rubber modified glass fiber. The glass fiber is subjected to modification treatment of the butyl rubber, so that the high-temperature viscosity of the adhesive is improved, and the glass fiber can be better mixed with raw materials of other components, and the mechanical strength of the adhesive is improved under the synergistic effect.
Preferably, the compatilizer is polyethylene grafted maleic anhydride and/or polyethylene grafted carboxylic acid.
Preferably, the dispersant is polyethylene wax.
Preferably, the toughening agent is butyl rubber grafted maleic anhydride.
Preferably, the filler consists of 3-12 parts by weight of sodium silicate and 1.4-3.6 parts by weight of aluminum borate whisker, or consists of 3-12 parts by weight of sodium silicate and 1-5 parts by weight of nano molybdenum disilicide.
Sodium silicate is a water-soluble silicate with a large specific surface area, and thus has high adhesion, high strength, and good acid and heat resistance.
The aluminum borate whisker has stable performance and excellent mechanical performance, can be added as a reinforcing material of an adhesive tape to improve the mechanical strength of the adhesive and enhance the tensile strength of the adhesive, has certain high temperature resistance and flame retardance due to the inorganic nonmetal characteristic of the adhesive tape, is compounded with sodium silicate and then added into the adhesive, and is used for reinforcing the adhesive and improving the high temperature resistance and flame retardance of the adhesive.
The molybdenum disilicide is an intermediate phase with the highest silicon content in a Mo-Si binary alloy system, has the dual characteristics of metal and ceramic, is a high-temperature material with excellent performance, and can be added into an adhesive after being compounded with sodium silicate, so that the temperature resistance of the adhesive can be obviously improved.
Preferably, the flame-retardant non-woven fabric is obtained by the following steps: mixing non-woven fabrics with absolute ethyl alcohol 1: 10-50, adding the non-woven fabric and absolute ethyl alcohol into a reaction tank, and mixing the non-woven fabric and methyl phenyl silicone oil in a mass ratio of 1: and 5-28, dropwise adding methyl phenyl silicone oil into the reaction tank, heating, condensing and refluxing in a water bath kettle at the temperature of 60-80 ℃, and stirring for 10-30 min to obtain the flame-retardant non-woven fabric.
Preferably, the fiber raw material selected for the non-woven fabric is at least one of polypropylene fiber, polyester fiber and polyvinyl chloride fiber, the fiber diameter is 2.1-8.3 mu m, and the fineness is 0.8-2.7 dtex. The non-woven fabric fiber is too thin, so that the prepared adhesive tape is low in strength and easy to break when heated at high temperature, and in addition, when the non-woven fabric fiber is too thick, the contact area of the adhesive coated by the prepared adhesive tape is small, the bonding strength of the adhesive and the non-woven fabric is low, and the cracking phenomenon is easy to occur at the bonding position when heated at high temperature.
Preferably, the release film is a silicon-free release film.
Correspondingly, the preparation method of the environment-friendly adhesive tape comprises the following steps:
s1: adding 0.2-3.6 parts of rubber modified glass fiber into 25-80 parts of diphenylhexa-polymethylsiloxane modified polyethylene resin, mixing, heating to a molten state, and stirring at a high speed to uniformly mix to obtain resin mixed slurry A;
s2: adding 1.2-3 parts of graphene oxide and 1-5 parts of dispersing agent into 3-12 parts of aromatic polycarbonate resin, heating to a molten state, stirring at a high speed to uniformly mix, adding 0.8-5 parts of filler, and continuously stirring for 1 hour to obtain resin mixed slurry B;
s3: adding 1.2-3.5 parts of compatilizer, 0.5-2.1 parts of flexibilizer, resin mixed slurry A and resin mixed slurry B into a mixer, heating, melting and mixing uniformly to obtain a composite adhesive, coating the composite adhesive on a non-woven fabric substrate by using an extrusion coating machine, and controlling the thickness of the coated adhesive layer to be 5-30 mu m;
s4: setting the drying tunnel temperature to 65 ℃, the rolling temperature to 80 ℃, the rolling pressure to 20MPa and the vehicle speed to 5m/min, carrying out the film laminating processing operation of the release film, and rolling by using a rolling device to obtain the environment-friendly adhesive tape.
The composite adhesive prepared by the invention is not cured at high temperature, can keep certain flexibility and has good following performance on thermal expansion and cold shrinkage and mechanical deformation of the surface of an adherend.
The invention has the beneficial effects that:
according to the environment-friendly adhesive tape, the diphenylhexa-polymethylsiloxane modified polyethylene resin and the aromatic polycarbonate resin are used as the basic adhesive resin, and the organic and inorganic compounded flame-retardant high-temperature-resistant material is used as the additive, so that the prepared environment-friendly adhesive tape can keep high viscosity and mechanical strength within the temperature range of 80-150 ℃, and harmful substances are not decomposed and overflow to pollute the environment.
The preparation process of the environment-friendly adhesive tape does not need to adopt an organic solvent, and is beneficial to environmental protection.
The environment-friendly adhesive tape disclosed by the invention is rich in good flexibility, and can be tightly attached to various complex-shaped parts only by leveling after being adhered or wound.
The environment-friendly adhesive tape has good adhesive force, and can simplify the cleaning work on the surface of a protected object, thereby reducing the labor cost and improving the construction efficiency.
The environment-friendly adhesive tape disclosed by the invention has good flexibility and structural displacement following performance, can effectively improve the sealing performance, and is large in application market and high in economic benefit.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
An environment-friendly adhesive tape comprises a release film, a base material and a composite adhesive coated between the base material and the release film, wherein the base material is a flame-retardant non-woven fabric; the composite adhesive is prepared from the following raw materials in parts by weight: 25-80 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 3-12 parts of aromatic polycarbonate resin, 0.2-3.6 parts of rubber modified glass fiber, 0.8-5 parts of filler, 1.2-3 parts of graphene oxide, 1.2-3.5 parts of compatilizer, 1-5 parts of dispersant and 0.5-2.1 parts of toughening agent.
The diphenyl hexa-polymethylsiloxane modified polyethylene resin is prepared by the following steps: adding phenol, formaldehyde and ammonia water into a reaction kettle at 85 ℃, reacting for 1.5h, distilling under reduced pressure to 55 ℃, adding diphenyl hexamethyl siloxane and polyethylene resin, stirring uniformly, and sequentially adopting phenol and deionized water to clean residual liquid to obtain the diphenyl hexamethyl siloxane modified polyethylene resin.
The ratio of the phenol, the formaldehyde, the ammonia water, the diphenyl hexa-polymethylsiloxane and the polyethylene resin is 30: 1.2: 2.6: 8: 45.
the rubber modified glass fiber is at least one of chloroprene rubber modified glass fiber, nitrile rubber modified glass fiber or styrene butadiene rubber modified glass fiber.
The compatilizer is polyethylene grafted maleic anhydride and/or polyethylene grafted carboxylic acid.
The dispersing agent is polyethylene wax.
The toughening agent is butyl rubber grafted maleic anhydride.
The filler comprises, by weight, 3-12 parts of sodium silicate and 1.4-3.6 parts of aluminum borate whisker, or comprises 3-12 parts of sodium silicate and 1-5 parts of nano molybdenum disilicide.
The flame-retardant non-woven fabric is obtained by processing the following steps: mixing non-woven fabrics with absolute ethyl alcohol 1: 10-50, adding the non-woven fabric and absolute ethyl alcohol into a reaction tank, and mixing the non-woven fabric and methyl phenyl silicone oil in a mass ratio of 1: and 5-28, dropwise adding methyl phenyl silicone oil into the reaction tank, heating, condensing and refluxing in a water bath kettle at the temperature of 60-80 ℃, and stirring for 10-30 min to obtain the flame-retardant non-woven fabric.
The non-woven fabric is made of at least one of polypropylene fibers, polyester fibers and polyvinyl chloride fibers, the fiber diameter is 2.1-8.3 mu m, and the fiber number is 0.8-2.7 dtex.
The release film is a silicon-free release film.
Correspondingly, the preparation method of the environment-friendly adhesive tape comprises the following steps:
s1: adding 0.2-3.6 parts of rubber modified glass fiber into 25-80 parts of diphenylhexa-polymethylsiloxane modified polyethylene resin, mixing, heating to a molten state, and stirring at a high speed to uniformly mix to obtain resin mixed slurry A;
s2: adding 1.2-3 parts of graphene oxide and 1-5 parts of dispersing agent into 3-12 parts of aromatic polycarbonate resin, heating to a molten state, stirring at a high speed to uniformly mix, adding 0.8-5 parts of filler, and continuously stirring for 1 hour to obtain resin mixed slurry B;
s3: adding 1.2-3.5 parts of compatilizer, 0.5-2.1 parts of flexibilizer, resin mixed slurry A and resin mixed slurry B into a mixer, heating, melting and mixing uniformly to obtain a composite adhesive, coating the composite adhesive on a non-woven fabric substrate by using an extrusion coating machine, and controlling the thickness of the coated adhesive layer to be 5-30 mu m;
s4: setting the drying tunnel temperature to 65 ℃, the rolling temperature to 80 ℃, the rolling pressure to 20MPa and the vehicle speed to 5m/min, carrying out the film laminating processing operation of the release film, and rolling by using a rolling device to obtain the environment-friendly adhesive tape.
Example 1
The environment-friendly adhesive tape comprises a release film, a base material and a composite adhesive coated between the base material and the release film, wherein the release film is a silicon-free release film, and the base material is a flame-retardant non-woven fabric; the composite adhesive is prepared from the following raw materials in parts by weight: 25 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 3 parts of aromatic polycarbonate resin, 0.2 part of chloroprene rubber modified glass fiber, 0.8 part of filler, 1.2 parts of graphene oxide, 1.2 parts of polyethylene grafted maleic anhydride, 1 part of polyethylene wax and 0.5 part of butyl rubber grafted maleic anhydride.
The filler consists of 3 parts of sodium silicate and 1.4 parts of aluminum borate whisker by weight.
The flame-retardant non-woven fabric is obtained by processing the following steps: mixing non-woven fabrics with absolute ethyl alcohol 1: 10, adding the non-woven fabric and absolute ethyl alcohol into a reaction tank, and mixing the non-woven fabric and the methyl phenyl silicone oil in a mass ratio of 1: and 5, dropwise adding methyl phenyl silicone oil into the reaction tank, heating, condensing and refluxing in a water bath kettle at 60 ℃, and stirring for 10min to obtain the flame-retardant non-woven fabric.
The non-woven fabric is made of polypropylene fibers, the fiber diameter is 8.3 mu m, and the fiber number is 2.7 dtex.
The thickness of the adhesive layer of the prepared environment-friendly adhesive tape is 6 um.
Example 2
The environment-friendly adhesive tape comprises a release film, a base material and a composite adhesive coated between the base material and the release film, wherein the release film is a silicon-free release film, and the base material is a flame-retardant non-woven fabric; the composite adhesive is prepared from the following raw materials in parts by weight: 48 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 7 parts of aromatic polycarbonate resin, 1.9 parts of nitrile rubber modified glass fiber, 2.3 parts of filler, 2.2 parts of graphene oxide, 2.6 parts of polyethylene grafted carboxylic acid, 1.8 parts of polyethylene wax and 1.2 parts of butyl rubber grafted maleic anhydride.
The filler consists of 3 parts of sodium silicate and 1 part of nano molybdenum disilicide in parts by weight.
The flame-retardant non-woven fabric is obtained by processing the following steps: mixing non-woven fabrics with absolute ethyl alcohol 1: 30, adding the non-woven fabric and absolute ethyl alcohol into a reaction tank, and mixing the non-woven fabric and the methyl phenyl silicone oil in a mass ratio of 1: and (2) dropping methyl phenyl silicone oil into the reaction tank according to the mass ratio of 12, heating, condensing and refluxing in a water bath kettle at 70 ℃, and stirring for 15min to obtain the flame-retardant non-woven fabric.
The non-woven fabric is made of terylene as a fiber raw material, the diameter of the fiber is 5.3 mu m, and the fineness of the fiber is 1.6 dtex.
The thickness of the adhesive layer of the prepared environment-friendly adhesive tape is 15 um.
Example 3
The environment-friendly adhesive tape comprises a release film, a base material and a composite adhesive coated between the base material and the release film, wherein the release film is a silicon-free release film, and the base material is a flame-retardant non-woven fabric; the composite adhesive is prepared from the following raw materials in parts by weight: 70 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 10 parts of aromatic polycarbonate resin, 3.5 parts of styrene-butadiene rubber modified glass fiber, 5 parts of filler and 3 parts of filler
Graphene oxide, 3.5 parts of a compatilizer, 4.5 parts of polyethylene wax and 2.1 parts of butyl rubber grafted maleic anhydride.
The compatibilizer consists of 1.5 parts of polyethylene grafted maleic anhydride and 2 parts of polyethylene grafted carboxylic acid.
The filler consists of 12 parts by weight of sodium silicate and 3.6 parts by weight of aluminum borate whisker.
The flame-retardant non-woven fabric is obtained by processing the following steps: mixing non-woven fabrics with absolute ethyl alcohol 1: 40, adding the non-woven fabric and absolute ethyl alcohol into a reaction tank, and mixing the non-woven fabric and the methyl phenyl silicone oil in a mass ratio of 1: and (21) dropwise adding methyl phenyl silicone oil into the reaction tank, heating, condensing and refluxing in a water bath kettle at the temperature of 80 ℃, and stirring for 30min to obtain the flame-retardant non-woven fabric.
The non-woven fabric is made of polyvinyl chloride fibers, the fiber diameter is 2.5 mu m, and the fiber number is 1.0 dtex.
The thickness of the adhesive layer of the prepared environment-friendly adhesive tape is 30 um.
Example 4
The composition and the preparation method of the environment-friendly adhesive tape of the embodiment are similar to those of the embodiment 1, and the main difference is that the composite adhesive is prepared from the following raw materials in parts by weight: 38 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 6.5 parts of aromatic polycarbonate resin, 3.4 parts of rubber modified glass fiber, 2.5 parts of filler, 1.7 parts of graphene oxide, 3.1 parts of compatilizer, 2.3 parts of dispersant and 1.4 parts of toughening agent.
The rubber modified glass fiber consists of 1.0 part of chloroprene rubber modified glass fiber and 2.4 parts of styrene butadiene rubber modified glass fiber.
The thickness of the adhesive layer of the prepared environment-friendly adhesive tape is 10 um.
Example 5
The composition and the preparation method of the environment-friendly adhesive tape of the embodiment are similar to those of the embodiment 2, and the main difference is that the composite adhesive is prepared from the following raw materials in parts by weight: 63 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 4 parts of aromatic polycarbonate resin, 1.8 parts of rubber modified glass fiber, 4.2 parts of filler, 2.8 parts of graphene oxide, 1.9 parts of compatilizer, 4.5 parts of dispersing agent and 1.6 parts of toughening agent.
The rubber modified glass fiber consists of 0.6 part of chloroprene rubber modified glass fiber and 1.2 parts of nitrile rubber modified glass fiber.
The thickness of the adhesive layer of the prepared environment-friendly adhesive tape is 25 um.
Example 6
The composition and the preparation method of the environment-friendly adhesive tape of the embodiment are similar to those of the embodiment 2, and the main difference is that the filler is composed of 6.5 parts by weight of sodium silicate and 2.3 parts by weight of nano molybdenum disilicide.
The thickness of the adhesive layer of the prepared environment-friendly adhesive tape is 18 um.
Example 7
The composition and preparation method of the environment-friendly adhesive tape in the embodiment are similar to those of the embodiment 3, and the main difference is that the filler is composed of 5.6 parts by weight of sodium silicate and 1.8 parts by weight of aluminum borate whiskers.
The thickness of the adhesive layer of the prepared environment-friendly adhesive tape is 22 um.
Comparative example 1
The composition and the preparation method of the environment-friendly adhesive tape of the embodiment are similar to those of the embodiment 1, and the main difference is that the composite adhesive does not contain diphenyl hexa-polymethylsiloxane modified polyethylene resin.
Comparative example 2
The composition and the preparation method of the environment-friendly adhesive tape of the embodiment are similar to those of the embodiment 1, and the main difference is that the polyethylene resin in the composite adhesive is not modified.
Comparative example 3
The composition and the preparation method of the environment-friendly adhesive tape of the embodiment are similar to those of the embodiment 1, and the main difference is that the rubber modified glass fiber is not added in the composite adhesive.
Comparative example 4
The composition and the preparation method of the environment-friendly adhesive tape of the embodiment are similar to those of the embodiment 1, and the main difference is that no filler is added in the composite adhesive.
Comparative example 5
The composition and the preparation method of the environment-friendly adhesive tape of the embodiment are similar to those of the embodiment 1, and the main difference is that graphene oxide is not added to the composite adhesive.
The environmental-friendly adhesive tapes of examples 1 to 7 and comparative examples 1 to 5 were subjected to the related performance tests, and the test results are shown in table 1:
TABLE 1
Figure GDA0002784178100000091
Figure GDA0002784178100000101
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. An environment-friendly adhesive tape comprises a release film, a base material and a composite adhesive coated between the base material and the release film, and is characterized in that the base material is flame-retardant non-woven fabric; the composite adhesive is prepared from the following raw materials in parts by weight: 25-80 parts of diphenyl hexa-polymethylsiloxane modified polyethylene resin, 3-12 parts of aromatic polycarbonate resin, 0.2-3.6 parts of rubber modified glass fiber, 0.8-5 parts of filler, 1.2-3 parts of graphene oxide, 1.2-3.5 parts of compatilizer, 1-5 parts of dispersant and 0.5-2.1 parts of toughening agent; the filler comprises, by weight, 3-12 parts of sodium silicate and 1.4-3.6 parts of aluminum borate whisker, or comprises 3-12 parts of sodium silicate and 1-5 parts of nano molybdenum disilicide.
2. The environment-friendly adhesive tape according to claim 1, wherein the diphenylhexamethosiloxane modified polyethylene resin is prepared by the following steps: adding phenol, formaldehyde and ammonia water into a reaction kettle at 85 ℃, reacting for 1.5h, distilling under reduced pressure to 55 ℃, adding diphenyl hexamethyl siloxane and polyethylene resin, stirring uniformly, and sequentially adopting phenol and deionized water to clean residual liquid to obtain the diphenyl hexamethyl siloxane modified polyethylene resin.
3. The environment-friendly adhesive tape according to claim 2, wherein the ratio of the phenol, formaldehyde, ammonia water, diphenylhexamethosiloxane and polyethylene resin is 30: 1.2: 2.6: 8: 45.
4. the environment-friendly adhesive tape according to claim 1, wherein the rubber-modified glass fiber is at least one of a chloroprene rubber-modified glass fiber, a nitrile rubber-modified glass fiber, or a styrene-butadiene rubber-modified glass fiber.
5. The environmentally friendly adhesive tape of claim 1, wherein the compatibilizer is polyethylene grafted maleic anhydride and/or polyethylene grafted carboxylic acid.
6. The environmentally friendly adhesive tape of claim 1, wherein the dispersant is a polyethylene wax.
7. The environmentally friendly adhesive tape of claim 1, wherein the toughening agent is butyl rubber grafted maleic anhydride.
8. The method for preparing the environment-friendly adhesive tape according to any one of claims 1 to 7, comprising the following steps:
s1: adding 0.2-3.6 parts of rubber modified glass fiber into 25-80 parts of diphenylhexa-polymethylsiloxane modified polyethylene resin, mixing, heating to a molten state, and stirring at a high speed to uniformly mix to obtain resin mixed slurry A;
s2: adding 1.2-3 parts of graphene oxide and 1-5 parts of dispersing agent into 3-12 parts of aromatic polycarbonate resin, heating to a molten state, stirring at a high speed to uniformly mix, adding 0.8-5 parts of filler, and continuously stirring for 1 hour to obtain resin mixed slurry B;
s3: adding 1.2-3.5 parts of compatilizer, 0.5-2.1 parts of flexibilizer, resin mixed slurry A and resin mixed slurry B into a mixer, heating, melting and mixing uniformly to obtain a composite adhesive, coating the composite adhesive on a non-woven fabric substrate by using an extrusion coating machine, and controlling the thickness of the coated adhesive layer to be 5-30 mu m;
s4: setting the drying tunnel temperature to 65 ℃, the rolling temperature to 80 ℃, the rolling pressure to 20MPa and the vehicle speed to 5m/min, carrying out the film laminating processing operation of the release film, and rolling by using a rolling device to obtain the environment-friendly adhesive tape.
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