CN109401656B - Antistatic protective film with stable viscosity - Google Patents

Antistatic protective film with stable viscosity Download PDF

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Publication number
CN109401656B
CN109401656B CN201811158768.6A CN201811158768A CN109401656B CN 109401656 B CN109401656 B CN 109401656B CN 201811158768 A CN201811158768 A CN 201811158768A CN 109401656 B CN109401656 B CN 109401656B
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layer
antistatic
protective film
parts
stable adhesiveness
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CN201811158768.6A
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CN109401656A (en
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李武
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Dongguan Zhuohua Polymer Material Co ltd
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Dongguan Zhuohua Polymer Material 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
    • C09J7/29—Laminated material
    • 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
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • 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
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/41—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the carrier layer
    • 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
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate
    • 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
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)

Abstract

The invention discloses an antistatic protective film with stable viscosity, which comprises a PET (polyethylene terephthalate) base material layer, antistatic layers arranged on the upper surface and the lower surface of the PET base material layer, and an adhesive layer arranged on the outer surface of the antistatic layer; wherein, the antistatic layer comprises the following components in parts by weight: 100 parts of lithium bistrifluoromethanesulfonylimide; 5-10 parts of dimethyl fumarate; 5-8 parts of glass powder; 3-5 parts of a dispersing agent; the adhesive layer comprises the following components in parts by weight: 100 parts of polyurethane resin; 5-10 parts of polybutylmethacrylate; 15-20 parts of polyacrylamide; 5-10 parts of an acrylic-acrylamide copolymer. Compared with the prior art, the protective film provided by the invention has stable viscosity and good antistatic performance, and can be used for packaging electronic elements.

Description

Antistatic protective film with stable viscosity
Technical Field
The invention relates to the technical field of protective films, in particular to an antistatic protective film with stable viscosity.
Background
Polyethylene terephthalate, PET for short, is a high polymer and is prepared by the dehydration condensation reaction of polyethylene terephthalate; the ethylene terephthalate is obtained by esterification reaction of terephthalic acid and ethylene glycol; PET is a milky white or pale yellow, highly crystalline polymer with a smooth and glossy surface; the material has excellent physical and mechanical properties in a wider temperature range, the long-term use temperature can reach 120 ℃, the electrical insulation property is excellent, even under high temperature and high frequency, the electrical property is still good, but the corona resistance is poor, and the creep resistance, the fatigue resistance, the friction resistance and the dimensional stability are good; because of the above excellent properties, PET is often processed into a packaging film in the prior art, and the existing PET film can well package various products.
However, the existing PET protective film has the following defects:
1) because the existing PET film does not have antistatic and electromagnetic shielding performances, the PET film is difficult to be used for packaging electronic element products.
2) Due to the requirements of environmental protection and cost, the acrylate pressure-sensitive adhesive for the PET protective film is gradually hydrated, but the acrylate emulsion pressure-sensitive adhesive generally has the defect of unstable viscosity.
In view of the above, there is a need to improve the conventional PET film to have stable adhesiveness and good antistatic property.
Disclosure of Invention
The invention aims to: aiming at the defects of the prior art, the protective film with stable viscosity and good antistatic performance is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
an antistatic protective film with stable viscosity comprises a PET substrate layer, antistatic layers arranged on the upper surface and the lower surface of the PET substrate layer, and an adhesive layer arranged on the outer surface of the antistatic layer;
wherein, the antistatic layer comprises the following components in parts by weight:
Figure BDA0001819539050000021
wherein the adhesive layer comprises the following components in parts by weight:
Figure BDA0001819539050000022
as a preferable embodiment of the antistatic protective film with stable viscosity according to the present invention, a solid-solid phase change material heat dissipation layer is further disposed between the adhesive layer and the antistatic layer, and the solid-solid phase change material is one of cross-linked high density polyethylene, pentaerythritol, neopentyl glycol, dimethylolethane, 2-amino-2-methyl-1, 3-propanediol, and tris (hydroxymethyl) aminomethane. When the surface temperature of the electronic element reaches the phase transition temperature of the solid-solid phase change material, the solid-solid phase change material is subjected to solid-solid phase change, absorbs heat and timely reduces the surface temperature of the electronic element, so that the heat dissipation performance of the PET protective film can be improved due to the arrangement of the solid-solid phase change material heat dissipation layer.
As the preferable scheme of the antistatic protective film with stable viscosity, an anti-electromagnetic interference layer is further arranged between the adhesive layer and the antistatic layer, and the anti-electromagnetic interference layer is a conductive rubber layer, a conductive cloth layer, a conductive foam layer or a conductive paint layer. The electromagnetic interference resisting layer can effectively prevent the generation of electromagnetic interference between the electronic components. The conductive rubber is prepared by uniformly distributing conductive particles such as silver-plated glass, silver-plated aluminum, silver and the like in silicon rubber, and enabling the conductive particles to be contacted through pressure, so that good conductive performance and anti-electromagnetic interference performance are achieved. The conductive cloth material is prepared by firstly chemically depositing or physically transferring metal nickel onto polyester fibers, then plating a copper layer with high conductivity on the nickel, and then plating nickel metal for preventing an oxidation machine from corrosion on the copper layer, wherein the combination of the copper and the nickel provides excellent conductivity and good electromagnetic shielding effect. The conductive foam is formed by wrapping conductive cloth on the flame-retardant sponge, so that the conductive foam has good surface conductivity and electromagnetic shielding effect. The conductive paint adopts composite particles containing copper, silver and the like as conductive particles, and has good conductive performance; the conductive paint enables a completely insulated non-metal or non-conductive surface to have the characteristics of absorbing, conducting and attenuating electromagnetic waves like metal by a spraying and brushing method, thereby playing a role in shielding electromagnetic wave interference.
As a preferable embodiment of the antistatic protective film with stable adhesiveness of the present invention, the adhesive layer further comprises 2 to 4 parts by weight of an acrylic acid-hydroxypropyl acrylate copolymer. The introduction of the acrylic acid-hydroxypropyl acrylate copolymer can reduce the residual rate of the glue layer under the acidic condition and maintain the stability of the overall adhesive property of the protective film, but the addition amount of the acrylic acid-hydroxypropyl acrylate copolymer should be limited in a preferred range.
As a preferable embodiment of the antistatic protective film with stable adhesiveness of the present invention, the number average molecular weight of the acrylic acid-hydroxypropyl acrylate copolymer is 10000-11000 g/mol.
As a preferable scheme of the antistatic protective film with stable viscosity, the number average molecular weight of the polyacrylamide is 12000-13000 g/mol.
As a preferable embodiment of the antistatic protective film with stable adhesiveness of the present invention, the number average molecular weight of the propylene-acrylamide copolymer is 9000-10000 g/mol.
As a preferable embodiment of the antistatic protective film with stable adhesiveness of the present invention, the number average molecular weight of the polyurethane resin is 16000-17000 g/mol.
As a preferable scheme of the antistatic protective film with stable viscosity, the number average molecular weight of the polybutylmethacrylate is 17000-18000 g/mol.
As a preferable embodiment of the antistatic protective film having stable adhesiveness according to the present invention, the dispersant is one of ethylene glycol ether, polyethylene glycol, and N-methylpyrrolidone.
Compared with the prior art, the invention has the beneficial effects that:
1) the adhesive layer takes polyurethane resin as a main body, and polyacrylamide is used for increasing the bonding strength and cohesion of the adhesive layer at high temperature; the polybutylmethacrylate can synergistically improve the heat resistance and the high humidity resistance of the polyurethane resin, the acrylic-acrylamide copolymer is used for improving the high temperature resistance of the polyurethane resin in cooperation with the polyacrylamide, and in addition, the acrylic-acrylamide copolymer can also be used for improving the overall toughness of the adhesive layer and reducing the self-contraction stress of the adhesive layer when the adhesive layer meets a large temperature difference. It should be noted that polybutylmethacrylate has better acid resistance than polymethylmethacrylate, and if polymethylmethacrylate is substituted for polybutylmethacrylate, the overall properties of the resulting formulation will be affected.
2) The antistatic layer takes bis (trifluoromethane sulfonyl) imide lithium as a main body, is generally used as lithium salt of organic electrolyte of a lithium ion battery, and has higher electrochemical stability and conductivity, and the antistatic layer is used as an antistatic agent, so that the antistatic effect is obvious; dimethyl fumarate is used for improving the cohesive force and the initial adhesion of the antistatic layer under an acidic condition so as to prevent the antistatic layer from transferring or dissolving, but the addition amount of the dimethyl fumarate is limited; the glass powder can synergistically improve the acid and alkali resistance and the high humidity resistance of the bis (trifluoromethanesulfonyl) imide lithium system, so that the antistatic layer can keep relatively stable peeling strength under high temperature and acid-base environments.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
Example 1
An antistatic protective film with stable viscosity comprises a PET substrate layer, antistatic layers arranged on the upper surface and the lower surface of the PET substrate layer, and an adhesive layer arranged on the outer surface of the antistatic layer;
wherein, the antistatic layer comprises the following components in parts by weight:
Figure BDA0001819539050000041
wherein the adhesive layer comprises the following components in parts by weight:
Figure BDA0001819539050000051
wherein the number average molecular weight of the polyacrylamide is 12000-13000 g/mol. The number average molecular weight of the propylene-acrylamide copolymer was 9000-10000 g/mol. The number average molecular weight of the polyurethane resin is 16000-17000 g/mol. The number average molecular weight of polybutylmethacrylate is 17000-18000 g/mol.
Example 2
In contrast to example 1, the antistatic layer comprises the following composition in parts by weight:
Figure BDA0001819539050000052
wherein the adhesive layer comprises the following components in parts by weight:
Figure BDA0001819539050000053
the rest is the same as embodiment 1, and the description is omitted here.
Example 3
In contrast to example 1, the antistatic layer comprises the following composition in parts by weight:
Figure BDA0001819539050000054
wherein the adhesive layer comprises the following components in parts by weight:
Figure BDA0001819539050000061
the rest is the same as embodiment 1, and the description is omitted here.
Example 4
Different from the embodiment 1, the adhesive layer also comprises 3 parts by weight of acrylic acid-hydroxypropyl acrylate copolymer; the number average molecular weight of the acrylic acid-hydroxypropyl acrylate copolymer is 10000-11000 g/mol. The rest is the same as embodiment 1, and the description is omitted here.
Example 5
Different from the embodiment 1, a solid-solid phase change material heat dissipation layer is further arranged between the adhesive layer and the antistatic layer, and the solid-solid phase change material is one of cross-linked high-density polyethylene, pentaerythritol, neopentyl glycol, dimethylolethane, 2-amino-2-methyl-1, 3-propanediol and tris (hydroxymethyl) aminomethane. The rest is the same as embodiment 1, and the description is omitted here.
Example 6
The difference with embodiment 1 is that still be provided with anti electromagnetic interference layer between viscose layer and the antistatic layer, anti electromagnetic interference layer is conductive rubber layer, and wherein, conductive rubber is with electrically conductive particle evenly distributed such as glass silvering, aluminium silvering, silver-colored in the silicon rubber, makes the conductive particle contact through pressure, reaches good electric conductive property and anti electromagnetic interference performance. The rest is the same as embodiment 1, and the description is omitted here.
Example 7
The difference from the embodiment 1 is that an anti-electromagnetic interference layer is further arranged between the adhesive layer and the antistatic layer, the anti-electromagnetic interference layer is a conductive cloth layer, wherein the conductive cloth material is formed by firstly chemically depositing or physically transferring metal nickel onto polyester fibers, then plating a high-conductivity copper layer on the nickel, and then plating nickel metal for preventing the oxidation machine from corrosion on the copper layer, so that the combination of the copper and the nickel provides excellent conductivity and good electromagnetic shielding effect. The rest is the same as embodiment 1, and the description is omitted here.
Example 8
The difference with embodiment 1 is that, still be provided with anti electromagnetic interference layer between viscose layer and the antistatic layer, anti electromagnetic interference layer is the cotton layer of electrically conductive bubble, and wherein, electrically conductive bubble is cotton wraps up electrically conductive cloth on fire-retardant sponge, makes it have good surface conductivity and electromagnetic shield effect. The rest is the same as embodiment 1, and the description is omitted here.
Example 9
Different from the embodiment 1, an anti-electromagnetic interference layer is further arranged between the adhesive layer and the antistatic layer, the anti-electromagnetic interference layer is a conductive paint layer, and the conductive paint adopts composite particles containing copper, silver and the like as conductive particles and is paint with good conductive performance; the conductive paint enables a completely insulated non-metal or non-conductive surface to have the characteristics of absorbing, conducting and attenuating electromagnetic waves like metal by a spraying and brushing method, thereby playing a role in shielding electromagnetic wave interference. The rest is the same as embodiment 1, and the description is omitted here.
Example 10
Different from the embodiment 1, an anti-electromagnetic interference layer and a solid-solid phase change material heat dissipation layer are arranged between the adhesive layer and the antistatic layer. The anti-electromagnetic interference layer is a conductive paint layer, and the conductive paint adopts composite particles containing copper, silver and the like as conductive particles, so that the paint has good conductive performance; the conductive paint enables a completely insulated non-metal or non-conductive surface to have the characteristics of absorbing, conducting and attenuating electromagnetic waves like metal by a spraying and brushing method, thereby playing a role in shielding electromagnetic wave interference. The solid-solid phase change material is one of cross-linked high-density polyethylene, pentaerythritol, neopentyl glycol, dimethylolethane, 2-amino-2-methyl-1, 3-propanediol and tris (hydroxymethyl) aminomethane. The rest is the same as embodiment 1, and the description is omitted here.
Table 1 shows the specific raw material formulation and the performance test parameters of the protective film prepared in the above examples:
TABLE 1
Figure BDA0001819539050000071
Figure BDA0001819539050000081
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the invention as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. An antistatic protective film having stable adhesiveness, characterized in that: the antistatic coating comprises a PET substrate layer, antistatic layers arranged on the upper surface and the lower surface of the PET substrate layer, and adhesive layers arranged on the outer surface of the antistatic layers;
wherein, the antistatic layer comprises the following components in parts by weight:
Figure FDA0001819539040000011
wherein the adhesive layer comprises the following components in parts by weight:
Figure FDA0001819539040000012
2. the antistatic protective film with stable adhesiveness according to claim 1, wherein: and a solid-solid phase change material heat dissipation layer is arranged between the adhesive layer and the antistatic layer, and the solid-solid phase change material is one of cross-linked high-density polyethylene, pentaerythritol, neopentyl glycol, dimethylolethane, 2-amino-2-methyl-1, 3-propanediol and tris (hydroxymethyl) aminomethane.
3. The antistatic protective film having stable adhesiveness according to claim 1 or 2, characterized in that: still be provided with anti electromagnetic interference layer between viscose layer and the antistatic layer, anti electromagnetic interference layer is conductive rubber layer, conductive cloth layer, the cotton layer of electrically conductive bubble or conductive paint layer.
4. The antistatic protective film with stable adhesiveness according to claim 1, wherein: the adhesive layer also comprises 2-4 parts by weight of acrylic acid-hydroxypropyl acrylate copolymer.
5. The antistatic protective film with stable adhesiveness according to claim 4, wherein: the acrylic acid-hydroxypropyl acrylate copolymer has a number average molecular weight of 10000-11000 g/mol.
6. The antistatic protective film with stable adhesiveness according to claim 1, wherein: the number average molecular weight of the polyacrylamide is 12000-13000 g/mol.
7. The antistatic protective film with stable adhesiveness according to claim 1, wherein: the number average molecular weight of the propylene-acrylamide copolymer is 9000-10000 g/mol.
8. The antistatic protective film with stable adhesiveness according to claim 1, wherein: the number average molecular weight of the polyurethane resin is 16000-17000 g/mol.
9. The antistatic protective film with stable adhesiveness according to claim 1, wherein: the number average molecular weight of the polybutylmethacrylate is 17000-18000 g/mol.
10. The antistatic protective film with stable adhesiveness according to claim 1, wherein: the dispersing agent is one of ethylene glycol ether, polyethylene glycol and N-methyl pyrrolidone.
CN201811158768.6A 2018-09-30 2018-09-30 Antistatic protective film with stable viscosity Expired - Fee Related CN109401656B (en)

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