KR101562535B1 - Road surface marking composition for adhesion and anti-cracking property and method using the same - Google Patents

Abstract

The present invention provides a composition for marking a road lane and a construction method using the same, comprising a polyamide resin, aggregates, an antioxidant, an ultraviolet light stabilizer, pentaerythritol, a hardening agent, and a pigment, capable of inhibiting crack generation while maintaining mechanical properties even with continuous shock by a weight of a vehicle with excellent shock resistance, promoting safety for a driver by maintaining brightness for a long period of time, maintaining visibility and excellent weather resistance without discoloration with respect to ultraviolet rays, and significantly representing effects in being integrated with an object to be adhered with excellent internal pore penetration of asphalt and concrete.

Description

TECHNICAL FIELD [0001] The present invention relates to a composition for lane surface marking having high adhesion and crack resistance, and a road surface marking composition for adhesion and anti-cracking property and method using the same.

TECHNICAL FIELD The present invention relates to a lane road surface display composition having strong adhesion and crack resistance and a method of using the same, and relates to a composition for improving the adhesion of a road surface to a road surface, It shows excellent effect.

In general, a road surface display having a slip prevention function is intended to improve frictional force by applying the road surface in a region where the required sliding resistance can not be secured according to the geometry and traffic characteristics of the road. That is, even if the slip resistance of the road surface road marking drops below a certain level as the use period of the road is increased, the road is repaired by using a road surface composition for anti-slip to increase the slip resistance fundamentally in terms of maintenance .

In recent years, such a slip-resistant road surface display composition has been applied to rooftops, outdoor parking lots, parks, and the like, which are places that are slippery when walking.

The road surface marking composition should have excellent adhesion to road surfaces such as asphalt and concrete, and should be excellent in adhesion to glass beads that reflect light on a night road or a dark road and clear road markings. In addition, there is no change with time such as yellowing and gloss degradation due to ultraviolet ray after curing, and thermal stability with no mechanical property deterioration due to a change in temperature during the summer and winter is required, and the impact resistance by a moving object such as an automobile must be excellent.

However, the existing road surface marking composition has a disadvantage that it easily cracks or fogs due to load and impact of automobile, and particularly, it raises a problem that the brightness is so low that it is difficult to judge presence or absence of a lane on a rainy day, come. Furthermore, the drying time is slower than the drying time (20 to 40 minutes). Therefore, there is a need to develop a road surface marking composition that overcomes the disadvantages to prevent traffic accidents.

Korean Patent No. 10-893723 discloses an anti-slip composition based on an acid-modified polyamide resin. However, since only the acid-modified polyamide resin is used as the substrate, the acid-modified polyamide resin alone has a high melting temperature and high melt viscosity and a low penetration into the pores of the adherend due to the lowering of the melting index, There is a problem in that it is detached due to deterioration of adhesion and water resistance in the exposure of the environment, and cracks are generated due to the continuous load of the vehicle, or discoloration or surface cracking occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a composition for lane road surface display which is effective for preventing slippage of a vehicle such as an automobile and preventing cracks, discoloration, and detachment from the road surface, and a construction method using the same.

According to an exemplary aspect of the present invention, there is disclosed a composition for lane road surface display comprising a polyamide resin, an aggregate, an antioxidant, a UV stabilizer, pentaerythritol, a hardener and a pigment.

According to another aspect of the present invention,

(a) a pretreatment step of pretreating the surface of the substrate;

(b) applying the coating composition for lane road surface display to a pretreated base paper surface.

The coating composition for lane road surface display according to the present invention is excellent in impact resistance and can maintain the mechanical properties even under a continuous impact due to the load of the vehicle to suppress cracking and maintain the luminance for a long time, There is an effect that there is no discoloration due to ultraviolet ray, and therefore, the weather resistance is excellent and the visibility is maintained. Furthermore, it has excellent penetration ability of asphalt and concrete pore, and is excellent in integrating with the adherend.

Hereinafter, various aspects and various embodiments of the present invention will be described in more detail.

According to an exemplary aspect of the present invention, there is disclosed a composition for lane road surface display comprising a polyamide resin, an aggregate, an antioxidant, a UV stabilizer, pentaerythritol, a hardener and a pigment.

According to an embodiment of the present invention, the composition may further comprise ergothioneine.

Specifically, the polyamide resin is preferably an acid modified polyamide resin. The polyamide resin not only improves the bonding force between the components of the anti-slip coating composition, but also exhibits heat resistance, Mechanical strength and oil resistance. Therefore, it is effective to improve the durability of a coating surface which is easily contaminated by soot or oil of an automobile. The polyamide resin is preferably a thermoplastic aromatic polyamide resin, specifically, a terephthalic acid-modified polyamide resin. In one embodiment of the present invention, the acid-modified polyamide resin is ARLEN of Mitsui Chemicals, .

The aggregate is a construction aggregate powder, which serves to improve the resistance to slip of the coated surface and the reflex reflection function, and is preferably pulverized to a size of about 0.1 to 5.0 mm. The aggregate is preferably 30 to 50 parts by weight with respect to 100 parts by weight of the polyamide resin. When the content is less than 30 parts by weight, resistance to sliding and retroreflective function may be deteriorated. When the aggregate exceeds 50 parts by weight Is undesirable because the physical properties of the whole composition may deteriorate or the constituents of the composition may not be mixed properly. More preferably, the aggregate is preferably a ceramic aggregate, and the particle size is preferably about 1 to 2 mm, and the Mohs hardness is about 6.5 to 7.5, which is strong on the hardness side and hardly discolored. Also, it is effective in terms of workability, economy, and workability because of less dust and good adhesiveness.

The antioxidant is preferably a phenol. The oxidation reaction of the polymer occurs due to heat, light, metal impurities, ozone, and peroxide added to the polymer during the molding process. As a result, the polymer tends to be broken, And the phenolic antioxidant blocks the chain reaction to prevent oxidation. The amount of the antioxidant is preferably 1 to 10 parts by weight based on 100 parts by weight of the polyamide resin. If the amount of the antioxidant is less than 1 part by weight, the effect is insufficient and is not effective to prevent oxidation. When the amount is more than 10 parts by weight, The physical properties are deteriorated and it is not preferable.

The ultraviolet stabilizer acts to prevent phenomena such as discoloration, surface cracking, and deterioration of mechanical properties such as degradation of polymer compounds such as resins by light such as ultraviolet rays and aging. Specifically, the ultraviolet stabilizer is preferably HALS (Hindered Amine Light Stabilizer), and the HALS serves to remove the free radicals generated during the photolysis reaction to stop the photooxidation reaction. Unlike an absorbent, the HALS has an excellent surface protecting action and can be applied to products having a thin cross section.

The pentaerythritol serves to improve the durability of the entire composition, and it is preferable that the pentaerythritol comprises 1 to 10 parts by weight based on 100 parts by weight of the polyamide resin. If the content is less than 1 part by weight, the effect is insignificant, and if it is more than 10 parts by weight, the physical properties of the composition are deteriorated.

The curing agent is preferably a peroxide, and its content is controlled according to seasonal temperature, and it is preferable that the content of the curing agent is 1 to 10 parts by weight based on 100 parts by weight of the polyamide resin. When the content is less than 1 part by weight, the curing rate is delayed and the strength of the specimen is not realized in a short time, which is not preferable. When the content exceeds 10 parts by weight, the working time is shortened, Which is undesirable.

The pigment is an additive for showing the lane on the road surface and can be colored by selecting a necessary color, and white, yellow and blue are generally used. The content of the pigment is preferably 1 to 5 parts by weight with respect to 100 parts by weight of the polyamide resin. If the content is less than 1 part by weight, color is not exhibited when the composition is colored on the road, There is a fear that the viscosity of the entire composition increases and the physical properties may deteriorate.

The ergothioneine preferably comprises 0.5 to 5 parts by weight based on 100 parts by weight of the polyamide resin, and improves the durability of the entire composition.

According to another aspect of the present invention, there is provided an image processing method comprising the steps of: (a) pre-processing a substrate;

(b) applying the composition for lane road surface display according to any one of the above (1) to (3) to a pretreated road surface, and a method of applying the composition using the composition for lane road surface display.

The step (a) of pretreating the base paper is a step of arranging the surface so that impurities do not exist on the base paper.

(b) The applying step is a step of applying the composition for lane road surface display on a surface having no impurities. Since the curing time is as short as several minutes as the construction method using the composition for lane road surface display, the construction method can shorten the work space and reduce the labor cost, thereby exhibiting an excellent effect in improving the economical efficiency and the construction efficiency.

Also, in the above-mentioned construction method, when performing a coating operation using a two-component type high-temperature and high-pressure spraying apparatus for road road surface display work, it is preferable to maintain the pressure of the spray injector at 1000-3000 psi. If the pressure is less than 1000 psi, the physical properties of the composition may be deteriorated due to poor mixing. If the pressure is more than 3000 psi, the composition may not be uniformly coated on the surface.

Hereinafter, the present invention will be described in more detail with reference to Examples and the like, but the scope and content of the present invention can not be construed to be limited or limited by the following Examples. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the present invention as set forth in the following claims. It is natural that it belongs to the claims.

[Example 1]

100 parts by weight of a polyamide resin was charged into a reactor, and 30 parts by weight of an aggregate, 1 part by weight of a phenol antioxidant, 1 part by weight of a HALS-based ultraviolet stabilizer, 1 part by weight of pentaerythritol, 1 part by weight of a peroxide curing agent, After the addition, the mixture was stirred for 30 minutes to prepare a composition for lane road marking.

[Examples 2 to 4]

The composition of the lane road surface was prepared in the same manner as in Example 1 except that the content of each component was set as shown in Table 1 below.

Component (parts by weight) Example 2 Example 3 Example 4 Polyamide resin 100 100 100 aggregate 40 50 40 Antioxidant 5 10 5 Ultraviolet stabilizer 5 10 5 Pentaerythritol 5 10 5 Ergothionein - - One Hardener 5 10 5 Pigment 2 5 2

[Comparative Example 1]

100 parts by weight of a polyamide resin was added to the reactor and 30 parts by weight of an aggregate, 1 part by weight of a phenolic antioxidant, 1 part by weight of a HALS-based ultraviolet stabilizer, 1 part by weight of a peroxide curing agent and 1 part by weight of a yellow pigment, Followed by stirring to prepare a composition for lane road marking.

[Experimental Example]

After applying the composition for lane road surface display prepared in Examples 1 to 4 and Comparative Example 1 on the application surface, the slip resistance was measured using a wheel trekking specimen manufactured according to KS F 2375 (Test Method of Slip Resistance of Road Surface) And the luminance performance was measured using a luminance meter (LS-100, MINOLTA) according to KS C 7613 (luminance measurement method). The results are shown in Table 3 below.

(However, the coated sections were divided into four sections on the road section to evaluate the workability. The road surface road marking section was tested for 6 months to determine whether the glass beads were dropped, discolored, adhered and cracked The evaluation criteria are shown in Table 2 below.)

Evaluation standard Great Good Bad how to write ◎ ○ X

Evaluation items Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Slip resistance (BPN) 60 61 58 57 45 Brightness (cd / m ² ) 149 150 148 151 106 Drying time (min) 11 11 10 10 22 Workability ◎ ◎ ◎ ◎ X discoloration
(month) 2 ◎ ◎ ◎ ◎ ○ 4 ◎ ◎ ◎ ◎ ○ 6 ○ ○ ○ ○ X Attachment
(month) 2 ◎ ◎ ◎ ◎ ○ 4 ◎ ◎ ◎ ◎ X 6 ○ ○ ○ ○ X Cracking
(month) 2 ◎ ◎ ◎ ◎ ○ 4 ◎ ◎ ◎ ◎ ○ 6 ○ ○ ○ ○ X

As shown in Table 3, the slip resistance of the lane road surface display composition prepared in Examples 1 to 4 is superior to that of Comparative Example 1. In the case of Examples 1 to 4, the drying time was reduced to half as compared with Comparative Example 1, and the workability was improved.

In addition, as a result of conducting the test for 6 months in terms of durability in terms of durability, in Examples 1 to 4, excellent physical properties were exhibited in terms of color change, degree of occurrence of cracks and adhesion state of the composition.

On the other hand, in the case of Comparative Example 1, there was no discoloration and adherence or cracking for 2 months after the first application, but the adherence did not start from 4 months later, and after 6 months, State or cracking occurred and it was confirmed that the physical properties were not maintained.

Accordingly, the coating composition for a lane road surface display according to the present invention is excellent in impact resistance, so that even when a vehicle is continuously impacted by a load of a vehicle, the mechanical properties are maintained as it is to suppress cracking and to maintain the brightness for a long time, There is an effect that it is possible to produce a color filter having excellent color reproducibility. Furthermore, it has excellent penetration ability of asphalt and concrete pore, and is excellent in integrating with the adherend.

Claims (5)

0.5 to 5 parts by weight of a polyamide resin, an aggregate, an antioxidant, a UV stabilizer, pentaerythritol, a hardener, a pigment and ergothioneine,
Wherein the antioxidant is a phenol, the ultraviolet stabilizer is a Hindered Amine Light Stabilizer (HALS), and the curing agent is a peroxide.
The method according to claim 1,
Wherein the antioxidant is 1 to 10 parts by weight, the ultraviolet stabilizer is 1 to 10 parts by weight, the pentaerythritol is 1 to 10 parts by weight, the curing agent is 1 to 10 parts by weight, and the pigment 1 to 5 parts by weight.
delete delete (a) a pretreatment step of pretreating the surface of the substrate;
(b) applying the composition for lane road surface display according to any one of claims 1 or 2 to a pretreated road surface, and applying the composition for lane road surface display.