CN110616056A - Hot-melt peelable glue - Google Patents
Hot-melt peelable glue Download PDFInfo
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- CN110616056A CN110616056A CN201910981591.8A CN201910981591A CN110616056A CN 110616056 A CN110616056 A CN 110616056A CN 201910981591 A CN201910981591 A CN 201910981591A CN 110616056 A CN110616056 A CN 110616056A
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
- C09J153/025—Vinyl aromatic monomers and conjugated dienes modified
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
Abstract
The invention relates to the technical field of shielding protection, in particular to a hot-melt peelable adhesive. The hot-melt peelable glue comprises the following raw materials in parts by weight: 40-80 parts of thermoplastic rubber, 15-30 parts of tackifying resin, 20-40 parts of polyolefin, 30-60 parts of plasticizer and 2-4 parts of antioxidant. The hot-melt peelable glue prepared by the invention has no volatile organic compound, is safe and environment-friendly; the curing speed is high, the curing can be carried out without curing equipment or heating or UV conditions, and the curing is solid at normal temperature and is convenient to transport and store; the paint has good flexibility, excellent stretching performance, strong waterproofness, easy stripping and no residual trace or stain; the boundary performance is strong; the process is automatic and the production efficiency is high.
Description
Technical Field
The invention belongs to the technical field of shielding protection, and particularly relates to a hot-melt peelable adhesive.
Background
With the economic growth, the electronic information industry is rapidly developing, and the requirements on production efficiency and product quality are more and more strict. Among them, printed circuit boards require shielding protection of components that cannot be coated before being coated with three-proofing, and currently, mostly, art paper or high-temperature adhesive tape is used. The figure paper has good flexibility, but has the problems of high cost, difficult peeling, difficult cleaning of residues and the like, and in addition, the manual operation is needed, and the efficiency is low. Therefore, in the face of the current situations of more and more expensive labor resources and higher and more integrated level, the development of the hot-melt peelable adhesive which is fast in curing, easy to peel, good in flexibility and capable of realizing automatic construction is urgent.
Disclosure of Invention
In order to solve the above problems, the first aspect of the present invention provides a hot-melt peelable adhesive, which comprises the following raw materials in parts by weight: 40-80 parts of thermoplastic rubber, 20-40 parts of polyolefin, 15-30 parts of tackifying resin, 30-60 parts of plasticizer and 2-4 parts of antioxidant.
As a preferred technical solution, the thermoplastic rubber is selected from one or more of styrene-isoprene-styrene block copolymer, styrene-butadiene-styrene block copolymer, and styrene-ethylene-butylene-styrene block copolymer.
As a preferred technical scheme, the thermoplastic rubber is a mixture of a styrene-butadiene-styrene block copolymer and a styrene-ethylene-butylene-styrene block copolymer.
As a preferred technical solution, the mass ratio of the styrene-butadiene-styrene block copolymer to the styrene-ethylene-butylene-styrene block copolymer is 1: (3-6).
As a preferred technical solution, the polyolefin is selected from one or more of polyethylene, polypropylene, ethylene-propylene copolymer, polybutene-1, poly-4-methylpentene-1, ethylene-vinyl acetate copolymer, ethylene-ethyl (meth) acrylate copolymer, ethylene-methyl (meth) acrylate copolymer, and ethylene-acrylic acid copolymer.
As a preferred technical scheme, the tackifying resin is aromatic hydrocarbon modified terpene resin and petroleum resin; the mass ratio of the aromatic modified terpene resin to the petroleum resin is 1: (0.08-0.14).
Preferably, the plasticizer is one or a combination of two or more selected from naphthenic oil, paraffin oil, white oil, dibutyl phthalate, diisobutyl phthalate and diisooctyl phthalate.
Preferably, the antioxidant is one or more of 2, 6-di-tert-butyl-p-cresol, phenyl-alpha-naphthylamine, dialkyl diphenylamine, pentaerythritol beta (3, 5-di-tert-butyl-hydroxyphenyl) propionate, octadecyl beta (3, 5-di-tert-butyl-hydroxyphenyl) propionate, tris (2, 4-di-tert-butylphenol) phosphite and zinc dibutyl dithiocarbamate.
The second aspect of the present invention provides a method for preparing the hot melt type peelable glue, comprising the following steps: adding the raw materials according to the parts by weight, heating to 200 and 280 ℃, stirring to form a uniformly viscous liquid, discharging and cooling to obtain the product.
The third aspect of the invention provides the application of the hot-melt peelable glue on the shielding protection of the components.
Has the advantages that: the hot-melt peelable glue is prepared by taking styrene-butadiene-styrene block copolymer, styrene-ethylene-butylene-styrene block copolymer and polypropylene as main components, and adding tackifying resin, proper plasticizer and antioxidant, so that the hot-melt peelable glue prepared by the invention has safety and environmental protection; the curing speed is high, curing equipment is not needed, and the curing can be carried out without heating or UV conditions; the flexibility is good, and the stretching performance is excellent; easy stripping and no residual glue; strong boundary performance and the like. In addition, the material is solid at normal temperature, and is convenient to transport and store.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "including". As used herein, the terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase will render the claim closed except for the materials described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein in the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received by modifying or otherwise modifying such quantity without substantially changing the basic function to which it is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number of requirements (i.e. the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one and the singular forms of an element or component also include the plural forms unless the number clearly indicates the singular form.
In view of the above technical problems, a first aspect of the present invention provides a hot-melt peelable adhesive, which comprises the following raw materials in parts by weight: 40-80 parts of thermoplastic rubber, 20-40 parts of polyolefin, 15-30 parts of tackifying resin, 30-60 parts of plasticizer and 2-4 parts of antioxidant.
In a preferred embodiment, the hot-melt peelable glue comprises the following raw materials in parts by weight: 60 parts of thermoplastic rubber, 30 parts of polyolefin, 23 parts of tackifying resin, 45 parts of plasticizer and 3 parts of antioxidant.
Thermoplastic rubber
The thermoplastic rubber, TPE for short, also called thermoplastic elastomer, is a high molecular material which shows rubber elasticity at normal temperature and is plastic when heated. Such materials combine the thermoplastic, machine-shaping characteristics with the rubber elastic properties of vulcanized rubber and are known as "third generation rubbers".
In one embodiment, the thermoplastic rubber is selected from one or more of styrene-isoprene-styrene block copolymers, styrene-butadiene-styrene block copolymers, styrene-ethylene-butylene-styrene block copolymers.
In a preferred embodiment, the thermoplastic rubber is a mixture of a styrene-butadiene-styrene block copolymer and a styrene-ethylene-butylene-styrene block copolymer.
In a preferred embodiment, the mass ratio of the styrene-butadiene-styrene block copolymer to the styrene-ethylene-butylene-styrene block copolymer is 1: (3-6).
In a most preferred embodiment, the mass ratio of the styrene-butadiene-styrene block copolymer to the styrene-ethylene-butylene-styrene block copolymer is 1: 4.5.
the styrene-butadiene-styrene block copolymer is a block copolymer of butadiene and styrene, the middle of a long chain molecule is a butadiene chain segment, and two ends of the long chain molecule are styrene chain segments. Which has a cross-linked rubbery character at ambient temperature.
The styrene-ethylene-butylene-styrene segmented copolymer is a linear triblock copolymer which takes polystyrene as a tail end section and takes an ethylene-butylene copolymer obtained by hydrogenation of polybutadiene as a middle elastic block. The styrene-ethylene-butylene-styrene block copolymer does not contain unsaturated double bonds, and therefore, has good stability, aging resistance and blending property.
Examples styrene-butadiene-styrene block copolymer (model number SBS-792), styrene-ethylene-butylene-styrene block copolymer (model number YH-602) were purchased from Shanghai Dookang industries, Inc.
Polyolefins
The polyolefin of the present invention generally refers to a polymer of ethylene, propylene or higher olefins. English is abbreviated as PO. Of which polyethylene and polypropylene are the most important. The polymer material has the advantages of abundant raw materials, low price, easy processing and forming and excellent comprehensive performance, so the polymer material has the largest output and very wide application.
In one embodiment, the polyolefin is selected from one or more of polyethylene, polypropylene, ethylene-propylene copolymers, polybutene-1, poly-4-methylpentene-1, ethylene-vinyl acetate copolymers, ethylene-ethyl (meth) acrylate copolymers, ethylene-methyl (meth) acrylate copolymers, ethylene-acrylic acid copolymers.
In a preferred embodiment, the polyolefin is polypropylene.
Examples polypropylene was purchased from Shanghai Merry plastics, Inc. under the designation M800 EX.
Tackifying resins
The tackifying resin of the invention is a small molecular compound capable of improving the viscosity, especially the surface viscosity, of a rubber material. Typically, these small molecule species have a relative molecular mass of between about a few hundred and ten thousand, and have relatively high glass transition temperatures.
In one embodiment, the tackifying resins are aromatic modified terpene resins and petroleum resins; the mass ratio of the aromatic modified terpene resin to the petroleum resin is 1: (0.08-0.14).
In a preferred embodiment, the tackifying resins are aromatic modified terpene resins and petroleum resins; the mass ratio of the aromatic modified terpene resin to the petroleum resin is 1: 0.11.
in a preferred embodiment, the petroleum resin is a C5 petroleum resin.
In the examples, the aromatic modified terpene resin (brand: TP2115) was purchased from Ganzhou Taipu chemical Co., Ltd; c5 Petroleum resin (brand: D0202) was purchased from Jitian chemical Co., Ltd, Shenzhen.
The present inventors have found that appropriate viscoelasticity can be imparted to a hot melt type peelable adhesive by adding an aromatic hydrocarbon-modified terpene resin and a C5 petroleum resin as tackifiers. The possible reason is that the aromatic modified terpene resin is a weak polar resin which has a low softening point and is compatible with a polybutadiene block in a styrene-butadiene-styrene block copolymer, thereby imparting initial tack to the hot-melt type peelable adhesive and improving viscoelastic responsiveness thereof; the C5 petroleum resin is compatible with polystyrene block in styrene-butadiene-styrene block copolymer, so that its glass transition temperature is raised and its shear strength is raised. If the addition amount of the C5 petroleum resin is too large, the two-phase separation structure of the styrene-butadiene-styrene block copolymer can be damaged, so that the bonding strength is too large, the peeling is not easy, the residual glue is generated, and the technical effect of the invention cannot be achieved. The inventor finds that when the mass ratio of the aromatic modified terpene resin to the petroleum resin is 1: (0.08-0.14), the hot-melt type peelable adhesive is most excellent in viscoelastic properties.
Plasticizer
The plasticizer is used for improving the bonding force, the impact resistance and the flexibility of the hot-melt peelable glue, reducing the melt viscosity of the hot-melt peelable glue and improving the operability of the hot-melt peelable glue.
In one embodiment, the plasticizer is selected from one or a combination of two or more of naphthenic oil, paraffin oil, white oil, dibutyl phthalate, diisobutyl phthalate and diisooctyl phthalate.
In a preferred embodiment, the plasticizer is a naphthenic oil.
The naphthenic oil in the examples was purchased from Guangzhou Chengyi chemical Co., Ltd under model number KN 4010.
Antioxidant agent
The antioxidant of the present invention is a compound capable of inhibiting or preventing oxidation. The styrene thermoplastic elastomer contains unsaturated bonds and other components are small molecular substances, and is easy to age under the action of environmental factors such as oxygen, light, heat and the like, and especially, the aging is more serious when the hot-melt peelable adhesive is prepared at high temperature and is melted and coated at the high temperature. Therefore, a proper amount of antioxidant is added in the formula and the preparation process of the hot-melt peelable glue. The antioxidant of the present invention is not strictly limited.
In one embodiment, the antioxidant is one or more of 2, 6-di-tert-butyl-p-cresol, phenyl-alpha-naphthylamine, dialkyldiphenylamine, pentaerythritol beta (3, 5-di-tert-butyl-hydroxyphenyl) propionate, octadecyl beta (3, 5-di-tert-butyl-hydroxyphenyl) propionate, tris (2, 4-di-tert-butylphenol) phosphite, zinc dibutyl dithiocarbamate.
In a preferred embodiment, the antioxidant is octadecyl beta (3, 5-di-tert-butyl-hydroxyphenyl) propionate.
The second aspect of the present invention provides a method for preparing the hot melt type peelable glue, comprising the following steps: adding the raw materials according to the parts by weight, heating to 200 and 280 ℃, stirring to form a uniformly viscous liquid, discharging and cooling to obtain the product.
The third aspect of the invention provides the application of the hot-melt peelable glue on the shielding protection of the components.
In one embodiment, the components include, but are not limited to, heat sink elements, power resistors, power diodes, cement resistors, adjustable resistors, buzzers, circular pads.
Examples
In order to better understand the above technical solutions, the following detailed descriptions will be provided with reference to specific embodiments. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention. In addition, the starting materials used are all commercially available, unless otherwise specified.
Example 1
Embodiment 1 provides a hot-melt peelable adhesive, comprising the following raw materials in parts by weight: 60 parts of thermoplastic rubber, 30 parts of polyolefin, 23 parts of tackifying resin, 45 parts of plasticizer and 3 parts of antioxidant.
The thermoplastic rubber is a mixture of a styrene-butadiene-styrene block copolymer and a styrene-ethylene-butylene-styrene block copolymer.
The mass ratio of the styrene-butadiene-styrene block copolymer to the styrene-ethylene-butylene-styrene block copolymer is 1: 4.5.
the styrene-butadiene-styrene block copolymer is SBS-792.
The styrene-ethylene-butylene-styrene block copolymer has the model of YH-602.
The polyolefin is polypropylene.
The polypropylene brand is M800 EX.
The tackifying resin is aromatic hydrocarbon modified terpene resin and petroleum resin.
The mass ratio of the aromatic modified terpene resin to the petroleum resin is 1: 0.11.
the aromatic modified terpene resin is under the brand name TP 2115.
The grade of the C5 petroleum resin is D0202.
The plasticizer is naphthenic oil.
The antioxidant is beta (3, 5-di-tert-butyl-hydroxyphenyl) octadecyl propionate.
The preparation method of the hot-melt peelable glue comprises the following steps: adding the raw materials according to the parts by weight, heating to 240 ℃, stirring to form uniform viscous liquid, discharging and cooling to obtain the product.
Example 2
Example 2 is essentially the same as example 1, except that: the hot-melt peelable glue comprises the following raw materials in parts by weight: 40 parts of thermoplastic rubber, 20 parts of polyolefin, 15 parts of tackifying resin, 30 parts of plasticizer and 2 parts of antioxidant.
Example 3
Example 3 is essentially the same as example 1, except that: the hot-melt peelable glue comprises the following raw materials in parts by weight: 80 parts of thermoplastic rubber, 40 parts of polyolefin, 30 parts of tackifying resin, 60 parts of plasticizer and 4 parts of antioxidant.
Comparative example 1
Comparative example 1 is essentially the same as example 1 except that: the hot-melt peelable glue comprises the following raw materials in parts by weight: 60 parts of thermoplastic rubber, 6 parts of polyolefin, 23 parts of tackifying resin, 45 parts of plasticizer and 3 parts of antioxidant.
Comparative example 2
Comparative example 2 is essentially the same as example 1 except that: the hot-melt peelable glue comprises the following raw materials in parts by weight: 6 parts of thermoplastic rubber, 60 parts of polyolefin, 23 parts of tackifying resin, 45 parts of plasticizer and 3 parts of antioxidant.
Comparative example 3
Comparative example 3 is essentially the same as example 1 except that: the mass ratio of the styrene-butadiene-styrene block copolymer to the styrene-ethylene-butylene-styrene block copolymer is 1: 15.
comparative example 4
Comparative example 4 is essentially the same as example 1 except that: the mass ratio of the styrene-butadiene-styrene block copolymer to the styrene-ethylene-butylene-styrene block copolymer is 10: 1.
comparative example 5
Comparative example 5 is essentially the same as example 1, except that: the tackifying resin is aromatic hydrocarbon modified terpene resin.
Comparative example 6
Comparative example 6 is essentially the same as example 1, except that: the tackifying resin is C5 petroleum resin.
Comparative example 7
Comparative example 7 is essentially the same as example 1 except that: the mass ratio of the aromatic modified terpene resin to the petroleum resin is 1: 1.
evaluation of Performance
(1) Heat resistance: the hot melt type peelable glue is coated on a printed circuit board and then placed at 110 ℃ for 30 min. And taking out the printed circuit board, naturally cooling to room temperature, stabilizing at the room temperature for 1h, peeling off, and observing whether the printed circuit board has residual glue or offset glue.
(2) Curing time: 100g of hot-melt peelable glue was cured at 25. + -. 3 ℃. And (4) judging a result: dry to the touch is the completion of cure and the time is recorded using a stopwatch.
(3) Tensile modulus, elongation at break: test with reference to the test method of GBT 30776-.
The results of the experiment are shown in the following table:
table 1: performance test data of hot melt type peelable adhesive obtained in examples and comparative examples
As can be seen from the table, the hot-melt peelable glue prepared by the invention has good high-temperature resistance, is easy to peel, has small tensile modulus and large elongation at break, and shows that the hot-melt peelable glue has good flexibility and excellent stretching property.
The hot melt peelable adhesive prepared in example 1 was cured within 30 ± 5 s.
Claims (10)
1. The hot-melt peelable glue is characterized by comprising the following raw materials in parts by weight: 40-80 parts of thermoplastic rubber, 20-40 parts of polyolefin, 15-30 parts of tackifying resin, 30-60 parts of plasticizer and 2-4 parts of antioxidant.
2. The hot-melt type peelable adhesive according to claim 1, wherein the thermoplastic rubber is selected from one or more of a styrene-isoprene-styrene block copolymer, a styrene-butadiene-styrene block copolymer, and a styrene-ethylene-butylene-styrene block copolymer.
3. The hot-melt type peelable adhesive according to claim 2, wherein the thermoplastic rubber is a mixture of a styrene-butadiene-styrene block copolymer and a styrene-ethylene-butylene-styrene block copolymer.
4. The hot-melt type peelable glue according to claim 3, wherein the mass ratio of the styrene-butadiene-styrene block copolymer to the styrene-ethylene-butylene-styrene block copolymer is 1: (3-6).
5. The hot melt peelable adhesive according to claim 1, wherein the polyolefin is selected from one or more of polyethylene, polypropylene, ethylene-propylene copolymer, polybutene-1, poly-4-methylpentene-1, ethylene-vinyl acetate copolymer, ethylene-ethyl (meth) acrylate copolymer, ethylene-methyl (meth) acrylate copolymer, and ethylene-acrylic acid copolymer.
6. The hot melt peelable adhesive according to claim 1, wherein the tackifying resin is a mixture of an aromatic hydrocarbon modified terpene resin and a petroleum resin; the mass ratio of the aromatic modified terpene resin to the petroleum resin is 1: (0.08-0.14).
7. The hot-melt type peelable glue according to claim 1, wherein the plasticizer is one or a combination of two or more selected from the group consisting of naphthenic oil, paraffinic oil, white oil, dibutyl phthalate, diisobutyl phthalate, and diisooctyl phthalate.
8. The hot-melt peelable adhesive according to claim 1, wherein the antioxidant is one or more of 2, 6-di-tert-butyl-p-cresol, phenyl- α -naphthylamine, dialkyldiphenylamine, pentaerythritol β (3, 5-di-tert-butyl-hydroxyphenyl) propionate, octadecyl β (3, 5-di-tert-butyl-hydroxyphenyl) propionate, tris (2, 4-di-tert-butylphenol) phosphite, and zinc dibutyldithiocarbamate.
9. A method for preparing the hot melt type peelable glue according to any one of claims 1 to 8, comprising the steps of: adding the raw materials according to the parts by weight, heating to 200 and 280 ℃, stirring to form a uniformly viscous liquid, discharging and cooling to obtain the product.
10. Use of the hot-melt peelable glue according to any one of claims 1 to 8 for the protection of components by masking.
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| CN113292952A (en) * | 2021-06-30 | 2021-08-24 | 佛山南宝高盛高新材料有限公司 | Peelable hot melt adhesive for electric appliance packaging and preparation method thereof |
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| CN113292952A (en) * | 2021-06-30 | 2021-08-24 | 佛山南宝高盛高新材料有限公司 | Peelable hot melt adhesive for electric appliance packaging and preparation method thereof |
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