KR101228878B1 - Method of preparing panel for automobiles and panel for automobiles produced using the same - Google Patents

Abstract

The present invention relates to a method for manufacturing a vehicle panel and a vehicle panel manufactured thereby, in particular 10 to 400 parts by weight of glass powder and glass beads on the inner surface of the vehicle panel 100 parts by weight of the room temperature curable organic liquid resin 10 to 400 parts by weight of glass powder based on 100 parts by weight of a room temperature-curable organic liquid resin on the inner surface of the vehicle panel manufacturing method or vehicle panel, characterized in that the coating of the reinforcing resin composite containing 10 to 800 parts by weight A method for manufacturing a vehicle panel and a vehicle panel manufactured by the same, comprising a reinforcing woven fabric or a nonwoven mat coated with a reinforcing resin composite including 10 to 800 parts by weight of glass and glass beads. It can be applied immediately without any product and it is manufactured at low cost because it has excellent adhesion. Easy, and has an effect capable of providing a vehicle panel to obtain the strength increase and noise reduction effect of the panel, there is an effect that it is possible to improve the weather resistance, corrosion resistance and acid resistance of the panel at the same time.

Glass Beads, Glass Fibers, Panels, Room Temperature Curable Organic Liquid Resin, Glass Fibers

Description

Method for manufacturing vehicle panel and vehicle panel manufactured thereby {METHOD OF PREPARING PANEL FOR AUTOMOBILES AND PANEL FOR AUTOMOBILES PRODUCED USING THE SAME}

The present invention relates to a method for manufacturing a vehicle panel and a vehicle panel manufactured by the same, and more particularly, it can be applied immediately without a primer (primer) treatment, excellent adhesion, easy to manufacture at low cost, and increase the strength of the panel The present invention has an effect of providing a vehicle panel capable of obtaining a noise blocking effect, and relates to a method for manufacturing a vehicle panel having an effect of simultaneously improving the weather resistance, corrosion resistance, and acid resistance of the panel, and a vehicle panel manufactured by the same.

Panels applied to the vehicle body may include door panels, floor panels, ceiling panels, bumper panels, etc. These panels are partition walls that separate the interior and exterior of the vehicle and mainly function, and these partition walls collide from the outside. Its main functions are to block shocks, block noises, keep warm, and block foreign inflows.

In order to perform such a function, technologies for installing or injecting various reinforcement materials have been developed in the interior of the panel, but there have been problems such as increase in vehicle weight, increase in cost, and complexity of the structure. That is, in the case of the method of injecting the foam filler between the inner and outer panels for noise isolation, it is difficult to accurately match the injection amount, and since the injection is performed after the mold is completed for injection, there is a problem in the final trim. There are a lot of problems. In addition, when the soundproof layer is coated inside the panel, there is a noise blocking effect, but there is a problem that the strength improvement cannot be achieved together, and there is a problem such as a cost increase due to the need to go through a primer process to increase the bond strength of the coating layer. . In addition to the side impact bar of the door panel (impact bar) brings strength, but no noise blocking effect, there is a problem that increases the manufacturing cost according to the complexity of the structure.

Therefore, there is a demand for the development of a panel structure capable of attaining noise blocking, thermal insulation characteristics, and strength at low cost.

In order to solve the problems of the prior art as described above, the present invention can be coated without the treatment of the primer can be coated at a low cost, increasing the strength of the panel and noise, increase the heat insulation effect, weather resistance, corrosion resistance and acid resistance An object of the present invention is to provide a method for manufacturing a vehicle panel that can be improved at the same time and a vehicle panel manufactured thereby.

To achieve these and other advantages and in accordance with the purpose of the present invention,

A vehicle for reinforcing resin composite comprising 10 to 400 parts by weight of glass powder and 10 to 800 parts by weight of glass beads to 100 parts by weight of the room temperature-curable organic liquid resin on the inner surface of the vehicle panel. It provides a method for producing a panel.

Also,

Reinforcing woven fabric or nonwoven mat coated with a reinforcing resin composite including 10 to 400 parts by weight of glass powder and 10 to 800 parts by weight of glass beads, based on 100 parts by weight of a room temperature-curable organic liquid resin on the inner surface of the vehicle panel. It provides a method for manufacturing a vehicle panel, characterized in that for combining.

In addition to the present invention

Provided is a vehicle panel, which is manufactured by the method for manufacturing the vehicle panel.

Hereinafter, the present invention will be described in more detail.

The present invention relates to a method for manufacturing a vehicle panel, comprising: 10 to 400 parts by weight of glass powder and 10 to 800 parts by weight of glass beads on an inner surface of the vehicle panel with respect to 100 parts by weight of a room temperature-curable organic liquid resin. It is composed by coating a resin composite for.

In addition to this, after the coating of the reinforcing resin composite before the coating layer is dried to combine the reinforcing woven or non-woven mat thereon and to re-coated the reinforcing resin composite on the surface of the mat may have a multi-layer structure. In addition to this, it is of course possible to alternately stack a plurality of the reinforcing mat and the resin composite layer as described above.

In addition, a reinforcing resin composite including 10 to 400 parts by weight of glass powder and 10 to 800 parts by weight of glass beads is added to 100 parts by weight of the room temperature-curable organic liquid resin on the inner surface of the vehicle panel without using such a lamination method. The interior may also be reinforced by joining the applied reinforcing woven or nonwoven mats. That is, the reinforcing woven or non-woven fabric mat is immersed in the reinforcing resin composite, or the resin composite is coated on both sides of the mat by a known method such as roller, spray, or brushing, and then directly applied to the inner surface of the vehicle panel. A method of gluing and hardening may be applied.

The vehicle panel may include various known panels used in automobiles, and specific examples thereof may include door panels, roof panels, side panels, A pillar panels, B pillar panels, C pillar panels, hood panels, bumper panels, and the like. Can be mentioned.

This may be mainly made of a metal such as high tensile steel sheet or aluminum plate, or a resin panel or a laminated panel thereof, and preferably, a door panel, a roof panel, and a hood panel made of high tensile steel sheet or aluminum alloy plate may be used. It is good to apply.

The room temperature-curable organic liquid resin used in the present invention may be used as it is, epoxy, acrylic, urethane, alkyd, polyester, or polyvinyl chloride. The epoxy-based resin is preferably a solvent-free or solvent- diluting epoxy resin having a molecular weight in the range of 350 to 3,000 MW among diglycidyl and triglycidyl types. The acrylic resin is preferably an acrylic urethane, an aqueous acrylic hydrosol, an emulsion-free acrylic silane, an ultraviolet curable acrylic, or the like having a methacrylic acid derivative as a main component. The alkyd based resin is preferably an alkyd resin in a paint form modified with a polybasic acid and a polyhydric alcohol ester compound, and includes rosin, phenol, epoxy, and vinyl styrene monomer. ), Alkyd resins modified with isocyanate, silicon, or the like can also be used. The polyvinyl chloride system preferably uses a plastic sol liquid resin of PVC.

These resins act as a binder of the resin composite, impart acid and alkali resistance, add a curing agent if necessary to cure, and a curing accelerator may be used to control the curing rate. Of course, the selection of these curing agents and curing accelerators can be determined according to the type and amount of the resin.

Such a room temperature-curable organic liquid resin has a problem that the binder capacity is weak when the content is too low, the content of the glass powder is reduced when the content is too high, the strength and physical properties are generally poor.

The glass powder used in the present invention may be mixed with the resin to increase the viscosity, and after curing, the impact resistance may be increased by filling the pores of the resin. In addition, the glass powder is hardened by a hard material having a hardness of 6 to 7 after strengthening the surface hardness to significantly reduce the generation of scratches due to external pressure to improve the scratch resistance, as well as the surface When contaminated, contaminants can be easily removed and removed by water to improve fouling resistance and to improve corrosion resistance.

The glass powder may be one of various particle shapes and particle sizes, and the particles of the glass powder are obtained by pulverizing general glass, and the glass composition is compatible with resins such as A, C, E, and alkali-resistant glass powder compositions. It will not be specifically limited if it is. Particularly, when the particle size of the glass powder is 10 μm to 1 mm, the particle size of the glass powder is better in terms of ease and physical properties of the coating.

The glass powder is preferably contained in an amount of 10 to 400 parts by weight, more preferably 50 to 100 parts by weight, based on 100 parts by weight of the composition resin solids. If the content is less than 10 parts by weight, the viscosity of the resin composite may be lowered and shrinkage and expansion may increase after curing. If the content is more than 400 parts by weight, the viscosity may be too high, and the resin content may be lowered to lower the strength. There is a problem that the composite may be dropped after curing.

In addition, the glass bead (glass bead) may be used as the glass beads of any shape, such as spherical, oval, or the like, it can be used all from the distribution of a variety of sizes to the selection of only a certain size.

Preferably the particle size of the glass beads is preferably 200 mesh (mesh) to 3 mm. If the particle size is less than 200 mesh, the volume fillability may be lowered and the impact resistance may be lowered. If the particle size is larger than 3 mm, the dispersibility may be lowered or protruded more than necessary on the surface of the vehicle body.

The glass beads are preferably contained in 10 to 800 parts by weight of glass beads, more preferably 100 to 400 parts by weight based on 100 parts by weight of the room temperature curable organic liquid resin. If the content is within the above range, both the workability and the properties of the coating portion are good characteristics.

In addition, the resin composite applied to the present invention including the above components may include glass fibers as necessary. The glass fiber is present in the resin to increase the tensile strength of the resin composite to be cured, and serves to prevent cracking.

Such glass fibers are preferably long glass fibers of an E glass composition, and fibers of an alkali resistance composition may be used.

The glass fiber may be a chopped fiber or a milled fiber prepared by crushing the glass fiber having a fiber diameter of 10 to 20 ㎛ to a uniform strand length or a pulverized average fiber length. In particular, the chopped fiber is preferably cut to a fiber length of about 2 to 12 mm, the pulverized fiber is preferably 100 to 300 ㎛ average fiber length. Particularly, pulverized fibers are preferable in consideration of tensile strength reinforcement and dispersibility of the resin, and chopped fibers and pulverized fibers may be mixed and used.

It is preferable that the said glass fiber is contained in 1-50 weight part with respect to 100 weight part of composition resin solid content. When the content of the glass fiber is within the above range, work such as tensile strength, durability and dispersion is particularly advantageous.

In addition, the resin composite applied to the present invention, additives such as fillers, pigments, diluents, dehumidifiers, organometallic salts, reaction catalysts, thickeners, rheology control agents, wetting agents, UV stabilizers, pinhole remover, or coating film smoothing agent, if necessary. It may further include.

Coating of the resin composite for reinforcement applied to the present invention as described above can be used a conventional coating method, specifically, can be used, such as brush coating, spray coating, roller coating, of course, in particular coating using spray coating It is desirable to.

The resin composite for reinforcement applied in the present invention as described above is hydrophilic by combining an inorganic filler with a reactor such as Epoxide group and Hydroxyl group in a room temperature-curable organic liquid resin including epoxy resin according to mixing of glass powder in the resin. It reinforces the properties and hardness and absorbs the surface energy of the room temperature curable organic liquid resin such as epoxy resin that acts as a binder. As a result, the surface tension decreases, thus supporting strong adhesion to the coating, enabling coating without primer work. In accordance with the inclusion of glass beads, the fluidity of the resin composite can be ensured, so that uniform coating can be obtained even on the surface bending and gaps.

In addition, a coating layer is formed on the inner surface of the vehicle body panel, and the coating layer has the advantage of increasing its strength through the above-described glass powder, glass beads, glass fibers, etc., and simultaneously improving scratch resistance, stain resistance, weather resistance, and acid resistance. have.

The reinforcing woven fabric or non-woven fabric mat applied for the strength reinforcement and noise shielding may be applied to a variety of known mats for strength reinforcement or noise blocking. Specific examples thereof include a woven or nonwoven fabric made of glass fiber, carbon fiber, and the like. A mat may be mentioned, and in addition, various known woven or nonwoven reinforcing mats may be applied thereto.

In addition, the present invention provides a vehicle panel characterized in that it is manufactured by such a method for manufacturing a vehicle panel, the resin composite used therein is of course that all the resin composite as described above can be applied thereto. Preferably, the thickness of the resin composite for reinforcement may be excellent durability when the coating on the surface of the vehicle body with a thickness of about 1 mm, more preferably 500 to 7000 ㎛ when considering the effect and economic efficiency of the strength and noise blocking If the thickness of the composite includes a reinforcing mat, it means the thickness of each resin composite, and the thickness of the reinforcing mat is appropriate for the noise blocking and strength reinforcement according to the use of each panel. It is desirable to apply the thickness.

According to the manufacturing method of the vehicle panel of the present invention as described above and the vehicle panel manufactured thereby, excellent storage stability of the resin composite, it is possible to apply without the treatment of the primer when the reinforcing layer is formed to form the reinforcing layer at low cost Possible, there is an advantage in coating productivity and adhesion.

In addition, the simple structure has the advantage of increasing the panel's strength and noise blocking effect as well as the thermal insulation effect without additional arrangement of the structure, and can simultaneously improve the weather resistance, corrosion resistance and acid resistance of the coating film.

The present invention described above is not limited to the detailed description, examples, and drawings of the above-described invention, and various one of ordinary skill in the art without departing from the spirit and scope of the present invention described in the claims below. Of course, modifications and variations are also included within the scope of the present invention.

Claims (11)

After coating the reinforcing resin composite including 10 to 400 parts by weight of glass powder and 10 to 800 parts by weight of glass bead with respect to 100 parts by weight of the room temperature-curable organic liquid resin on the inner surface of the vehicle panel, Bonding a reinforcing woven or non-woven mat mat and a method of manufacturing a vehicle panel, characterized in that to re-coated the reinforcing resin composite on the surface of the mat. delete Both sides of the reinforcing woven fabric or nonwoven mat for reinforcing resin composite including reinforcing resin composite including 10 to 400 parts by weight of glass powder and 10 to 800 parts by weight of glass bead with respect to 100 parts by weight of the room temperature-curable organic liquid resin on the inner surface of the vehicle panel. The method of manufacturing a vehicle panel, characterized in that the coating on the surface of the vehicle panel to adhere to and harden. The method according to claim 1 or 3, The room temperature curing type organic liquid resin is at least one selected from the group consisting of epoxy, acrylic, urethane, alkyd, polyester, and polyvinyl chloride. The method according to claim 1 or 3, Method for producing a vehicle panel, characterized in that the particle size of the glass powder is 10 ㎛ to 1 mm. The method according to claim 1 or 3, The particle size of the glass bead (glass bead) is a method of manufacturing a vehicle panel, characterized in that 200 mesh (mesh) to 3 mm. The method according to claim 1 or 3, The reinforcing resin composite is a chopped fiber in which glass fibers having a fiber diameter of 10 to 20 µm are cut into a uniform strand length, or milled fibers in which the average fiber length is ground to 100 to 300 µm. Method for producing a vehicle panel further comprises 1 to 50 parts by weight based on 100 parts by weight of the composition resin solids. The method according to claim 1 or 3, The additive for the reinforcing resin composite is selected from the group consisting of fillers, pigments, diluents, dehumidifying agents, organometallic salts, reaction catalysts, thickeners, rheology control agents, wetting agents, UV stabilizers, pinhole removers, and coating film smoothing agents. Method for producing a vehicle panel, characterized in that it further comprises. The method of claim 7, wherein The additive for the reinforcing resin composite is selected from the group consisting of fillers, pigments, diluents, dehumidifying agents, organometallic salts, reaction catalysts, thickeners, rheology control agents, wetting agents, UV stabilizers, pinhole removers, and coating film smoothing agents. Method for producing a vehicle panel, characterized in that it further comprises. A vehicle panel manufactured by the method for manufacturing a vehicle panel according to claim 1. The method of claim 10, Vehicle panel characterized in that the thickness of the resin composite for reinforcement is 500 to 7000 ㎛.