KR20170068716A - Adhesive Silicon Steel Sheet Coating Solution with High Surface Quality and Adhesion and Method for Silicon Steel Sheet Using the Same - Google Patents
Adhesive Silicon Steel Sheet Coating Solution with High Surface Quality and Adhesion and Method for Silicon Steel Sheet Using the Same Download PDFInfo
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- KR20170068716A KR20170068716A KR1020150175443A KR20150175443A KR20170068716A KR 20170068716 A KR20170068716 A KR 20170068716A KR 1020150175443 A KR1020150175443 A KR 1020150175443A KR 20150175443 A KR20150175443 A KR 20150175443A KR 20170068716 A KR20170068716 A KR 20170068716A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/10—Homopolymers or copolymers of propene
- C09J123/14—Copolymers of propene
- C09J123/147—Copolymers of propene with monomers containing other atoms than carbon or hydrogen atoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/10—Homopolymers or copolymers of propene
- C09J123/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/10—Homopolymers or copolymers of propene
- C09J123/14—Copolymers of propene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/24—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/003—Interior finishings
Abstract
The present invention is a metal of the vehicular interior part - as, more particularly a polypropylene (Polypropylene) of maleic anhydride in the resin relates to a method for producing a plastic adhesive and parts using the same; and (Maleic Anhydride MAH) grafting (Grafting) modified And a method of manufacturing a metal-plastic part using the same.
More specifically, the present invention provides a metal-plastic adhesive comprising a modified polypropylene modified resin and a solvent by grafting maleic anhydride ( MAH) to a polypropylene resin, It has superior adhesive strength compared to conventional metal-plastic adhesive and can achieve uniform adhesion.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal-plastic adhesive for a vehicle interior part and a method for manufacturing the same, and more particularly, to a method for manufacturing a metal- And a method of manufacturing a metal-plastic part using the same.
In recent years, there has been a tendency for higher quality in automobile design, and accordingly, various surface treatment parts for the enhancement of interior materials have been actively developed. A typical example of the interior design is metal grain. In order to realize this, a method of wrapping plastic injection molding with real aluminum is being carried out.
In order to produce real aluminum products for interior parts of vehicles, it is important to realize the adhesion between metal and plastic, which is incompatible with each other. Existing process consists of aluminum press machining structure plastic injection mold surface adhesion adhesive application shape Aluminum is raised and then the oven is heated.
The conventional process has a disadvantage in that productivity is lowered due to a large number of steps, and the adhesion between the metal and the plastic is lowered because the adhesive in the solution state is not dried well. Also, with the cooling involved in the injection mold, the volume of the component decreases and as a result of such contraction, stresses are generated to allow at least some desorption of the polymer from the metal. As a result, air is contained between the metal and the polymer, and the adhesion is further reduced.
In order to solve such a problem, a method of providing a thermoplastic adhesion promoter between a conventional polymer and a metal layer has been attempted. However, the thermoplastic material used as an adhesion promoter forms a water gas while absorbing water and coating it with a polymer melt, which has the disadvantage of impregnating air and reducing the adhesion between the metal and the polymer .
Further, such a thermoplastic adhesion promoter has a disadvantage of insufficient dimensional stability. That is, the thermoplastic adhesion promoter is in a melt state with a very low viscosity, which can result in an inhomogeneous distribution of the thermoplastic adhesion promoter by forming an internal pressure that causes the thermoplastic adhesion promoter to flow out when the injection molded component is cooled and shrunk.
And, the adhesive used in the past was using an acrylic base polymer. Such acryl base adhesives can not be manufactured with a high viscosity, so that a spray coating method must be used. Therefore, there is a disadvantage that clean room facilities are required and drying time is long.
On the other hand, in the case of the injection molding process, a technique of combining similar or different two or more components in one process is required, and a hydrid technique for inserting the metallic structure into the injection mold, an insert technique and an out Outsert techniques have been developed.
The insert technology refers to the imbedding of metal parts during molding, in which injection molded polymer-metal hybrids utilize the properties of the included bond partners synergistically to produce rational fabrication of multifunctional lightweight structures . The purpose of such insert technology is to combine the advantages of each individual material group. Processes have been actively implemented to embody a press sheet having various shapes using an adhesive and an adhesion promoter, and then to insert it into the insert technology.
The present invention has been made to overcome the above-mentioned technical limitations and it is an object of the present invention to provide an adhesive composition capable of reducing the number of process steps and enhancing adhesion, And the invention of a real aluminum manufacturing process is proposed.
SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems of the prior art described above, and it is an object of the present invention to provide a polypropylene resin composition which comprises a modified polypropylene modified resin by grafting maleic anhydride ( MAH) Which is excellent in adhesion strength to a conventional metal-plastic adhesive and capable of realizing a uniform adhesive force, and a method for manufacturing the same.
In addition, the present invention has an excellent adhesive force and a uniform adhesive force, and a hot-melt type adhesive is applied on the surface of aluminum in advance and put in an injection mold, and a plastic resin is injected, Another object of the present invention is to provide a method of manufacturing a metal-plastic part using a metal-plastic adhesive capable of improving workability and productivity through simplification of a metal-plastic adhesive.
The technical objects to be achieved by the present invention are not limited to the technical matters mentioned above, and other technical subjects which are not mentioned can be clearly understood by those skilled in the art from the description of the present invention .
According to an aspect of the present invention, there is provided a metal-plastic adhesive which is prepared by grafting maleic anhydride ( MAH) to a polypropylene resin, And comprises a polypropylene modified resin and a solvent.
In an embodiment of the present invention, the polypropylene modified resin is preferably 15 to 25% by weight of 100% by weight of the metal-plastic adhesive.
In one embodiment of the present invention, the maleic anhydride is preferably 4 to 6 wt% of 100 wt% of the polypropylene modified resin.
In one embodiment of the present invention, the polypropylene-modified resin preferably has a weight average molecular weight of 50,000 to 100,000 and a glass transition temperature (Tg) of -30 to -15 ° C.
Also, in one embodiment of the present invention, the solvent preferably includes methylcyclohexane, butyl acetate, and isopropylalcohol.
In an embodiment of the present invention, the solvent is preferably formed of 60 to 70% by weight of methylcyclohexane, 25 to 35% by weight of butyl acetate, and 1 to 10% by weight of isopropyl alcohol.
In one embodiment of the present invention, the weight ratio of methylcyclohexane, butyl acetate, and isopropyl alcohol is preferably 65: 30: 5.
In one embodiment of the present invention, the metal is preferably aluminum.
According to another aspect of the present invention, there is provided a metal-plastic part to which a metal-plastic adhesive is adhered.
According to another aspect of the present invention for solving the problems of the aforementioned prior art, a polypropylene (Polypropylene) maleic anhydride (Maleic Anhydride) in the resin grafted (Grafting) and modified by forming a polypropylene-modified resin; Methyl cyclohexane, butyl acetate and isopropyl alcohol to prepare a solvent; And dissolving the polypropylene modified resin in the solvent to produce a metal-plastic adhesive; The present invention provides a method of producing a metal-plastic adhesive comprising the steps of:
In one embodiment of the present invention, the polypropylene modified resin is 15 to 25 wt% of 100 wt% of the metal-plastic adhesive, and the maleic anhydride is 4 to 6 wt% of 100 wt% of the polypropylene modified resin .
In an embodiment of the present invention, the solvent is preferably formed of 60 to 70% by weight of methylcyclohexane, 25 to 35% by weight of butyl acetate, and 1 to 10% by weight of isopropyl alcohol.
According to another aspect of the present invention, there is provided a method of manufacturing a metal-plastic part to which a metal-plastic adhesive is adhered, And then drying it; Press-molding an aluminum sheet to which the dried metal-plastic adhesive is adhered; And placing the press-formed aluminum sheet on a plastic mold and then insert injection; And a method of manufacturing a metal-plastic part using the metal-plastic adhesive.
Further, it is preferable that, in one embodiment of the present invention, it further comprises, after the insert injection step, applying the coating liquid to the upper surface of the insert-injected metal-plastic part.
Also, in one embodiment of the present invention, the post-application drying step is preferably performed using a bar-coating process.
According to the metal-plastic adhesive and the method for producing the same of the present invention, by including a modified polypropylene modified resin and a solvent by grafting maleic anhydride ( MAH) to a polypropylene resin, - Excellent adhesion to plastic adhesive and uniform adhesion force.
In addition, according to the method for producing a metal-plastic part using the metal-plastic adhesive of the present invention, an adhesive force is excellent and a uniform adhesive force is realized, a hot-melt type adhesive is applied on the surface of aluminum in advance, The plastic resin is injected so as to exhibit the adhesion performance with the heat, so that the workability and the productivity are improved through the simplification of the parts manufacturing process, so that the metal-plastic parts can be efficiently manufactured.
1 is a photograph showing a metal-plastic part for a vehicle interior using real aluminum;
2 is a cross-sectional view of a metal-plastic part to which a metal-plastic adhesive is adhered, according to an embodiment of the present invention.
3 is an enlarged view of a surface state of a metal-plastic adhesive according to one embodiment of the present invention and a comparative example after coating and drying the aluminum surface.
4 is a flowchart illustrating a method of manufacturing a metal-plastic part to which a metal-plastic adhesive is adhered according to an embodiment of the present invention.
Fig. 5 is a photograph showing the results of evaluation of adhesion between aluminum and plastic according to the content of maleic anhydride grafting in a polypropylene resin. Fig.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.
In recent years, there has been a tendency for higher quality in automobile design, and accordingly, various surface treatment parts for the enhancement of interior materials have been actively developed. A typical example of the interior design is metal grain. In order to realize this, a method of wrapping plastic injection molding with real aluminum is being carried out.
1 shows a metal-plastic part for a vehicle interior using real aluminum.
In order to produce real aluminum products for such vehicle interior parts, a method of realizing the adhesion between metal and plastic which is incompatible with each other is the key. In the prior art, in order to realize the adhesion between the metal and the plastic, the aluminum is usually press-processed, then the plastic structure is injection molded, and the adhesive is applied to the surface of the injection molding. And 5) oven heating.
The above-mentioned conventional techniques have a disadvantage in that the productivity is decreased due to a large number of steps in each step, and the adhesion between the metal and the plastic is lowered because the adhesive in a solution state is not dried well.
In the case of an acrylic base polymer which is a conventional adhesive, since such an acrylic base adhesive can not be manufactured with a high viscosity, a spray coating method has to be used, so that a clean product is required. In addition to the disadvantages of high process cost and long drying time There was a problem.
Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to provide a polypropylene resin composition comprising a modified polypropylene modified resin by grafting maleic anhydride ( MAH) Plastic adhesives, and to provide a metal-plastic adhesive and a method of manufacturing the same, which are capable of realizing a uniform adhesive force and an excellent adhesive force as compared with conventional metal-plastic adhesives.
In addition, the present invention realizes an excellent adhesive force and a uniform adhesion force, and a hot-melt type adhesive is previously applied to an aluminum surface, and the plastic is injected into an injection mold, Plastic parts using metal-plastic adhesives capable of improving workability and productivity through the simplification of the metal-plastic adhesives.
The metal-plastic adhesive of the present invention may be formed by grafting maleic anhydride ( MAH) to a polypropylene resin and a modified polypropylene modified resin and a solvent.
This is an adhesive resin obtained by grafting maleic anhydride to the polypropylene resin skeleton, and exhibits excellent adhesion to polypropylene, aluminum and nylon, as well as excellent chemical resistance and scratch resistance.
It is preferable that the polypropylene modified resin is contained in a range of 15 to 25 wt% of 100 wt% of the metal-plastic adhesive. When the content of the polypropylene modified resin is less than 15% by weight, the coating film thickness decreases and the adhesive strength decreases. When the content exceeds 25% by weight, resin phase separation occurs.
On the other hand, the maleic anhydride contained in the polypropylene modified resin is preferably 4 to 6% by weight of 100% by weight of the polypropylene modified resin. When the content of maleic anhydride is 4% by weight or less, The technique of grafting the resin by including the acid anhydride in an amount exceeding 6% by weight is difficult to implement at the present state of the art.
FIG. 5 is a photograph showing the results of evaluation of adhesion between aluminum and plastic according to the content of maleic anhydride grafting in a polypropylene resin. FIG.
As shown in the left image of FIG. 5, in the case of an adhesive containing no maleic anhydride at all, the adhesive force is only 89 kgf, which indicates that the adhered portion of the metal-plastic bonding is remarkably generated. In the case of the adhesive containing 2% by weight of maleic anhydride, the adhesive force was 241 kgf, and the adhesive force was slightly increased.
On the other hand, in the case of an adhesive containing 4% by weight and 6% by weight of maleic anhydride, the adhesive strength is 386 kgf and 448 kgf, respectively, .
The weight average molecular weight of the polypropylene modified resin preferably has a weight average molecular weight of 50,000 to 100,000. When the weight average molecular weight is 50,000 or less, the chemical resistance of the material is deteriorated. When the weight average molecular weight is 100,000 or more, The glass transition temperature (Tg) of the resin is preferably -30 to -15 ° C.
Meanwhile, in the metal-plastic adhesive of the present invention, the solvent is used for the purpose of improving the flowability of the adhesive and improving the solubility of the resin, and includes methylcyclohexane, butyl acetate, and isopropylalcohol can do.
The methylcyclohexane has an excellent solubility in resin, but has a disadvantage that the volatilization rate is fast and the viscosity is difficult to control. The butyl acetate has a merit that the solubility of resin is somewhat lowered, but the volatilization rate is slow and the viscosity is easily controlled. The isopropyl alcohol has an advantage that the resin solubility is poor, but the resin storage property is good when used in small amounts. Therefore, in the present invention, a solvent in which the three components are mixed is used in consideration of the resin storage stability and coating workability.
Table 1 shows the properties of the solvent and the compatibility with the metal-plastic adhesives according to the constituents of the solvent and the ratio thereof. When the storage stability, that is, the resin solubility and workability were evaluated, The case where the workability is good and the case where the workability is good is indicated by.
As shown in the experimental results of Table 1, the solvent used in the metal-plastic adhesive of the present invention is composed of 50 to 65% by weight of methylcyclohexane, 30 to 45% by weight of butyl acetate and 5% by weight of isopropyl alcohol And it was confirmed that the resin storage property and coating workability were the best when the weight ratio of methylcyclohexane, butyl acetate and isopropyl alcohol was 65: 30: 5 as in Example 1.
3 is an enlarged view of a surface state of a metal-plastic adhesive according to an embodiment of the present invention and a comparative example after coating and drying on a surface of aluminum. The weight ratio of methylcyclohexane, butyl acetate and isopropyl alcohol 65: 30: 5, it can be confirmed that the adhesive is evenly applied to the entire aluminum surface.
On the other hand, in the case of a solvent composed solely of methylcyclohexane as in Comparative Example 1, the volatilization rate of the solvent was excessively high and the workability was deteriorated. On the aluminum surface, the surface state after the application of the adhesive agent and drying was also bad Can be confirmed. Also, in the case of a solvent composed only of butyl acetate as in Comparative Example 3, the resin was not dissolved in the solvent, so that the bubbles generated during the dissolution were discharged, which interfered with adhesion between the metal and the plastic.
Meanwhile, the metal to which the metal-plastic adhesive of the present invention is applied may be formed of aluminum.
4 is a flowchart illustrating a method of manufacturing a metal-plastic part to which a metal-plastic adhesive is adhered according to an embodiment of the present invention. Hereinafter, the method for producing a metal-plastic adhesive of the present invention will be described.
First, maleic anhydride is grafted and modified to the polypropylene resin to form a polypropylene modified resin (S1).
It is preferable that the polypropylene modified resin is contained in 15 to 25 wt% of 100 wt% of the metal-plastic adhesive, and the maleic anhydride contained in the polypropylene modified resin is 4 to 6 wt% %, And the polypropylene modified resin preferably has a weight average molecular weight of 50,000 to 100,000
Subsequently, methyl cyclohexane, butyl acetate and isopropyl alcohol are mixed to prepare a solvent (S2).
As described above, when the weight ratio of methyl cyclohexane, butyl acetate, and isopropyl alcohol is 65: 30: 5, the solvent is most preferably used because of its excellent storage stability and coating workability. Depending on the needs of the invention, solvents may be formed in proportions of 50-65 wt.% Methylcyclohexane, 30-45 wt.% Butyl acetate, and 5 wt.% Isopropyl alcohol.
Thereafter, the polypropylene modified resin is dissolved in the solvent to prepare a metal-plastic adhesive (S3).
Methylcyclohexane is excellent in resin solubility but has a high volatilization rate and difficulty in viscosity control. In the case of butyl acetate, the solubility of resin is somewhat lower, but the volatilization rate is slow and the viscosity is easily controlled. Isopropyl alcohol is advantageous in that resin solubility is poor, but resin storage stability is good when used in small amounts. Therefore, in the present invention, a solvent in which the three components are mixed is used in consideration of the resin storage stability and coating workability.
A metal-plastic part is manufactured by using the metal-plastic adhesive manufactured as described above.
First, the metal-plastic adhesive is uniformly applied to the aluminum sheet and dried (S4).
As shown in FIG. 3, when the weight ratio of methylcyclohexane, butyl acetate, and isopropyl alcohol was 65: 30: 5, it was confirmed that the adhesive was uniformly applied to the entire aluminum surface.
Then, the aluminum sheet to which the dried metal-plastic adhesive is adhered is press-molded (S5).
In the present invention, a known press molding machine is used to carry out a press molding process. An aluminum sheet having a metal-plastic adhesive bonded in the form of various in-vehicle components such as a metal-plastic component for a vehicle interior as shown in Fig. 1 Press molding can be performed.
After the press-molded aluminum sheet is placed on a plastic mold, an insert injection process is performed (S6).
The insert technology refers to the imbedding of metal parts during molding. In the present invention, it is possible to use a known insert injection molding machine, and it is possible to manufacture a part in which plastic is wrapped with aluminum through an insert injection process do.
Finally, the metal-plastic part of the present invention is completed by applying the coating solution to the upper surface of the metal-plastic part injected with the insert and drying it (S7).
The coating liquid may be any material as long as it can ensure scratch resistance, water resistance and abrasion resistance of the metal layer of the present invention, which may be formed of aluminum or the like, and may be applied to the upper surface of the metal-plastic part by a spraying method .
As a result, the present invention can be applied to the manufacture of metal-plastic parts for in-vehicle use comprising a top coating layer, a real aluminum layer, an adhesive layer and a plastic layer as shown in Fig. 1 do.
As described above, the existing real aluminum part manufacturing process has low productivity due to a large number of steps, and the adhesion between the metal and the plastic is lowered because the adhesive in the solution state is not dried well. In addition, The volume of the element is reduced and stress is generated as a result of such contraction, so that the polymer is desorbed from the metal, and air is contained between the metal and the polymer, thereby further reducing the adhesive force. However, according to the metal-plastic adhesive of the present invention and the method for producing the same, the polypropylene resin is modified by grafting maleic anhydride ( MAH) to the polypropylene resin, It has an advantage of being excellent in adhesion strength compared with a metal-plastic adhesive and capable of realizing a uniform adhesion force.
In addition, according to the method for producing a metal-plastic part using the metal-plastic adhesive of the present invention, an adhesive force is excellent and a uniform adhesive force is realized, a hot-melt type adhesive is applied on the surface of aluminum in advance, Plastic parts are injected and the adhesion performance with the heat is developed, thereby improving the workability and productivity through simplification of the parts manufacturing process, thereby making it possible to efficiently manufacture metal-plastic parts.
Although the present invention has been described in connection with the specific embodiments of the present invention, it is to be understood that the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. Various modifications and variations are possible.
Claims (13)
Wherein the polypropylene modified resin is 15 to 25 wt% of 100 wt% of the metal-plastic adhesive.
Wherein the maleic anhydride is 4 to 6 wt% of 100 wt% of the polypropylene modified resin.
Wherein the polypropylene-modified resin has a weight average molecular weight of 50,000 to 100,000.
Wherein said solvent comprises methylcyclohexane, butyl acetate and isopropylalcohol. ≪ Desc / Clms Page number 20 >
Wherein the solvent comprises 50-65 wt% methyl cyclohexane, 30-45 wt% butyl acetate, and 5 wt% isopropyl alcohol.
Wherein the metal is aluminum.
Methyl cyclohexane, butyl acetate and isopropyl alcohol to prepare a solvent; And
Dissolving the polypropylene modified resin in the solvent to prepare a metal-plastic adhesive;
Lt; RTI ID = 0.0 > a < / RTI > metal-plastic adhesive.
In the range of -30 to -15 占 폚.
Wherein the solvent comprises 50-65 wt% methyl cyclohexane, 30-45 wt% butyl acetate, and 5 wt% isopropyl alcohol.
Uniformly applying a metal-plastic adhesive to an aluminum sheet, followed by drying;
Press-molding an aluminum sheet to which the dried metal-plastic adhesive is adhered;
Placing the press-molded aluminum sheet on a plastic mold, and then performing insert injection;
Wherein the metal-plastic adhesive is adhered to the metal-plastic part.
Wherein the coating step is applied using a bar-coating process. ≪ RTI ID = 0.0 > 21. < / RTI >
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021118196A1 (en) | 2019-12-11 | 2021-06-17 | 주식회사 포스코 | Metal-plastic composite material and method for manufacturing same |
| CN115572426A (en) * | 2022-09-30 | 2023-01-06 | 金发科技股份有限公司 | Polyolefin material and preparation method and application thereof |
| KR20230048870A (en) | 2021-10-05 | 2023-04-12 | 강원대학교산학협력단 | Adhesion Promoters |
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| KR102383600B1 (en) | 2020-10-22 | 2022-04-06 | 주식회사 서연이화 | A method for metal and plastic composite bodies |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5829098B2 (en) * | 2011-10-26 | 2015-12-09 | 株式会社カネカ | Adhesive laminate for insert molding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021118196A1 (en) | 2019-12-11 | 2021-06-17 | 주식회사 포스코 | Metal-plastic composite material and method for manufacturing same |
| KR20230048870A (en) | 2021-10-05 | 2023-04-12 | 강원대학교산학협력단 | Adhesion Promoters |
| CN115572426A (en) * | 2022-09-30 | 2023-01-06 | 金发科技股份有限公司 | Polyolefin material and preparation method and application thereof |
| CN115572426B (en) * | 2022-09-30 | 2024-04-02 | 金发科技股份有限公司 | Polyolefin material and preparation method and application thereof |
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| KR101762265B1 (en) | 2017-07-31 |
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