JP2003119411A - Repairing agent and repairing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a repairing agent low in production cost and easy in performing a repairing work, and to provide a repairing method by using the agent. SOLUTION: The repairing method comprises the steps of applying inexpensive sodium bicarbonate as a 1st agent to damaged spot (s), then adding a 2nd agent whose main component is a cyanoacrylate undergoing instantaneous polymerization on contact with water to the 1st agent to effect instantaneous hardening, and consequently removing the resultant excess part by abrasion, or the like. Thus, the damaged spot(s) can be repaired easily and quickly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repairing agent for repairing a damaged portion of an article and a repairing method therefor, particularly ABS.
The present invention relates to a repairing agent and a repairing method which are most suitable for repairing a damaged or damaged portion when a prototype block is made by polishing a block of resin or the like. .

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 9-241423 discloses a photocurable resin composition for repairing a plastic molded product and a repairing method. In this reference, the photocurable resin composition for repairing a plastic molded product contains at least 1 in the same molecule.
A polymerizable compound having two ethylenically unsaturated groups,
A photopolymerization initiator, a necessary amount of an inorganic filler, and a necessary amount of a colorant and a designing filler, and the photocurable resin composition for repairing a plastic molded product to a plastic molded product damaged portion, slightly. It is filled in such a manner that it rises up and is irradiated with light to cure the photocurable resin composition for repairing a plastic molded product, and then rises up to polish the repair agent on the part to restore the surface.

It is also disclosed that the inorganic filler comprises at least one of a silica compound surface-treated with a silane compound, aluminum hydroxide, and glass powder.

[0004]

However, in the above-mentioned reference, there is a problem that the repairing agent itself becomes expensive, and further, since the repairing agent is cured by light, especially ultraviolet rays, in order to shorten the curing time. However, there is a problem in that a device for irradiating light is required and a step for irradiating light must be separately provided.

From the above, the present invention is to provide a repairing agent and a repairing method which have a low manufacturing cost and can be easily repaired.

[0006]

Accordingly, the present invention resides in a repairing agent comprising a first agent containing sodium hydrogen carbonate as a main component and a second agent containing cyanoacrylate, so-called cyanoacrylate as a main component. At the same time, the first agent containing sodium hydrogen carbonate as a main component was buried in the damaged portion of the solid, and the second agent containing cyanoacrylate (cyanoacrylate) was added to the first agent buried in the damaged portion. It is a repair method that hardens and hardens and removes excess parts.

Therefore, according to the present invention, an inexpensive sodium hydrogencarbonate, so-called sodium bicarbonate is added to the damaged portion as the first agent, and a cyanoacrylate ester (cyanoacrylate) which is instantly polymerized by contact with moisture is mainly used. Since the second agent as a component is added to the first agent to instantaneously solidify and then the excess portion can be removed by polishing or the like, the damaged portion can be easily and promptly repaired. It is a thing. It should be noted that the cyanoacrylic acid ester reacts with the water contained in the air or the water absorbed by the baking soda to instantly polymerize.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

The repair agent according to the embodiment of the present invention is composed of a first agent containing sodium hydrogencarbonate (baking soda) as a main component and a second agent containing cyanoacrylate as a main component.

As a result, for example, as shown in FIG. 1 (a), when a damaged portion 2 is produced in a prototype (matrix) 1 manufactured by grinding a block made of ABS resin, first, as shown in FIG. 1 (b). ), The 1st agent 3 is added so that it may rise in the damage part 2.

Then, as shown in FIG. 1C, the second agent 4 is added to the first agent 3 to solidify the first agent 3.
At this time, the second agent 4 reacts with the moisture absorbed by the first agent and the moisture in the air to polymerize and solidify. And
The repair portion 5 formed by this solidification is composed of a filling portion 5b located inside the damaged portion 2 and a raised surplus portion 5a, and the surplus portion 5a is polished.
By removing it by cutting or the like, repair can be completed as shown in FIG.

Further, according to the experiments of the present inventor, the repaired portion 5 formed by the first agent 3 and the second agent 4 has the same hardness as the mother body 1, and is polished together with the mother body. , Was able to do the cutting work. Further, even if the surfaces of the mother body 1 and the repaired portion 5 after the repairing work were painted, color unevenness and the like did not occur, and good results could be obtained.

[0013]

As described above, according to the present invention, the first agent containing sodium hydrogen carbonate (baking soda) as a main component, which can be obtained at low cost, and cyanoacrylic acid which reacts with water to instantly polymerize Since the repair agent is composed of the second agent containing ester as the main component, the cost of the repair agent itself can be reduced and the solidification time can be shortened, so that the workability in the prototype production can be improved and the profit margin can be improved. It can be done.

Further, since the hardness of the repaired portion solidified by the first and second agents is almost equal to the hardness of the ABS resin or the like used as the prototype base material, the polishing / cutting work is continued after the repairing. Since it can be performed, waste of materials can be eliminated and workability can be improved.

[Brief description of drawings]

FIG. 1A is an explanatory diagram showing a mother body and a damaged portion thereof, FIG. 1B is an explanatory diagram showing a first agent added to the damaged portion, and FIG. It is explanatory drawing which showed the state which added the agent to the 1st agent and solidified, and (d) is explanatory drawing which showed the state after removing an excess part.

[Explanation of symbols]

1 prototype (mother body) 2 damaged part 3 first agent 4 second agent 5 Repair Department

Claims (2)

[Claims] 1. A first containing sodium hydrogen carbonate as a main component
A repair agent comprising an agent and a second agent containing cyanoacrylate as a main component. 2. A solid first damaged part is filled with a first agent containing sodium hydrogen carbonate as a main component, and a second part mainly containing cyanoacrylate is added to the first part filled in the damaged part. A repair method characterized by hardening and removing excess parts.