KR102148597B1 - Eco-friendly paint using rosin - Google Patents

Abstract

The present invention relates to an eco-friendly paint using rosin, and by providing a paint composition in which the viscosity and vulnerability of fire are appropriately formulated using loess powder and calcium hydroxide for rosin oil from which terpine oil is removed from rosin, reliable strength and luster of rosin, And it is possible to reliably improve the vulnerability of rosin, which can reliably improve the durability as well as insect repellency, disaster prevention (flame resistance) and antibacterial functions. It is also a composition of eco-friendly paint for implementing this, and is a liquid rosin obtained by liquefying and mixing solid rosin with high-purity ethanol so that it can be spray-applied on a wooden structure, or 50-60Wt% of rosin oil from which terpine oil is removed from the rosin, It is characterized by a composition comprising 30-40Wt% of loess powder at the level of 300-500Mesh to improve the adhesion and disaster prevention properties of rosin or rosin oil, and 1-10Wt% of calcium hydroxide as a strong basic compound to improve antibacterial properties and hardenability. .

Description

Eco-friendly paint using rosin}

The present invention relates to an eco-friendly paint using rosin with excellent sterilization properties to improve strength and gloss while easily forming a coating film on wood to be applied. More specifically, the excellent strength and luster of natural resins such as rosin or rosin oil It relates to an eco-friendly paint using rosin that can significantly enhance durability as well as insect repellency, disaster prevention and antibacterial functions of wood structures to be applied with an optimal blending of loess powder and calcium hydroxide while saving viscosity and vulnerability to fire.

Recently, as interest in traditional culture has increased, movements to maintain and preserve old palaces, temples, and old houses in their original form are spreading, but most of them are wooden cultural assets such as old palaces, temples, and old houses that use wood dried using pine trees. Preservation is difficult due to increased corrosion and termite damage caused by the reduction of resin and penetration of external decay bacteria.

In particular, there are many gaps in old wood with reduced resin, and moisture and air inflow are smooth, so that it is easy to create an appropriate habitat for termites. As an alternative, there is a need to fill gaps in wood, to prevent wood corrosion and to control termites. Accordingly, methods such as rosin coating, antibacterial treatment, fumigation, and pesticide coating are used.

However, this method temporarily solves the problem, but the fundamental solution is insufficient. Of course, filling the wood with rosin helps to solve a more fundamental solution, but it is difficult to apply due to the high viscosity of rosin and has a decisive disadvantage of being vulnerable to fire.

On the other hand, various methods for strengthening the durability of wood, which enhance the durability of wood, extend the service life, and perform an environmentally friendly method of strengthening the surface of wood, preservative, moisture-proof, and insect-repellent treatment were introduced in various ways. 20-0333178 (wood for furniture using lacquer), Patent Publication No. 10-2010-0138320 (Paint Composition), Patent Publication No. 10-2011-0117309 (Composition for waterproofing soil walls or wood made of natural materials), Patent Even in the disclosed technologies such as Registration No. 10-1801561 (Method for Strengthening Wood Durability), it is not possible to reliably improve all the problems of rosin with excellent sterilization properties in improving strength and gloss while easily forming a coating on wood to be applied. There is a situation.

Therefore, the object of the present invention is to solve the problems of conventional wood paints, especially for rosin oil from which terpine oil has been removed from rosin oil, a coating composition that is appropriately formulated using loess powder and calcium hydroxide to reduce viscosity and fire vulnerability. The purpose is to provide an eco-friendly paint using rosin, which reliably improves the vulnerability of rosin, which can reliably improve the strength and gloss of rosin, as well as its insect-repellent, disaster prevention (flame resistance) and antibacterial functions, as well as durability. There is this.

In order to achieve the above object, the eco-friendly paint using the rosin of the present invention is a liquid rosin obtained by liquefying and mixing solid rosin with high purity ethanol so that it can be sprayed and applied to a wooden structure, or rosin in which terpine oil has been removed from the rosin. Oil value 50-60 Wt%, which is more than half of the total composition, 30-40 Wt% of loess powder at the level of 300-500 mesh to improve adhesion and disaster prevention of rosin or rosin oil, and calcium hydroxide of a strong basic compound to improve antibacterial and curing properties It has a technical characteristic because it is contained in a trace amount of 1-10Wt%.

According to the eco-friendly paint using the rosin of the present invention, while maintaining the excellent strength and gloss of the natural resin rosin or rosin oil, it is vulnerable to viscosity and fire, while the insect repellent of a wooden structure to be applied in an optimal blending with ocher powder and calcium hydroxide. ,Disaster prevention and antibacterial functions as well as durability can be reinforced dramatically.When the coating composition prepared in this way is applied to wood, the gaps in the wood are filled, and the durability and flame resistance of the wood are reinforced by the reinforcement of rosin, resulting in an antibacterial effect. Due to this, it can reliably suppress decaying bacteria and mold, which are the cause of corrosion of wood.

For reference, this is due to poor quality of wood, which was largely planted for reforestation for forest rehabilitation in the 1970s and 1980s, and thus had disadvantages to be used as a wooden structure, so its use was small, but it was 40-50 compared to pine, pine, and fir trees. % Since it emits a lot of rosin, it is expected that the use of the friendly paint using the rosin of the present invention can be a new way to utilize the Rikida pine.

1 is a photograph of a flame resistance test of an eco-friendly paint using rosin according to the present invention.
Figure 2 is a photograph of a sample spray applied to a wooden structure with an eco-friendly paint using the resin according to the present invention spray gun.

Hereinafter, the composition of a specific composition for implementing an eco-friendly paint using rosin of the present invention will be described in detail with reference to various examples.

First, the eco-friendly paint using rosin of the present invention uses rosin with excellent sterilization properties to maximize the strength and gloss of wood while easily forming a coating film on the wood structure to be applied, which is harmful to the human body and is known as a volatile material. It is preferable to use rosin oil from which terpine oil has been removed. In addition, it goes without saying that solid rosin itself together with rosin oil can be liquefied using high-purity ethanol.

Rosin can be divided into resin and essential oil, of which essential oil contains a large amount of unsaturated fatty acids, vitamin A, esters, glycoginine, chlorophyll, vitamin C, etc., and has very strong sterilization and antiseptic effect, and can be applied to wood. In this case, the strength and gloss of the structure will be reliably improved, but it has a characteristic that it is extremely vulnerable to fire due to its strong volatility. In addition, rosin oil is an oil that flows out at 300-400℃ when distilling rosin, and crude rosin oil is known to be dissolved in sodium hydroxide and combined with calcium hydroxide (slaked lime) to make grease.

Accordingly, the present invention provides disaster prevention by reliably improving and compensating the vulnerability of fire due to high viscosity and volatility to rosin itself or rosin oil from which terpine oil has been removed, and at the same time, it also provides harmful aspects such as insect repellency and deodorization. In order to reliably improve durability while removing, it is intended to provide an eco-friendly paint composition that is appropriately blended using loess powder and calcium hydroxide.Through various experimental examples below, the optimal composition mixing ratio for the eco-friendly paint of the present invention I could find it.

For reference, as a component that complements the flame resistance of rosin, especially rosin oil and enhances adhesion, about 400 mesh of loess powder is used, and calcium hydroxide (slaked lime), a basic compound of white powder, is used to increase antibacterial properties and hardenability, and the present invention The wood structure to which the eco-friendly paint composition according to was applied was tested by applying a pine board interior material.

Prior to the experiment, when the composition material constituting the eco-friendly paint of the present invention is added to a mixing container and stirred, a natural paint composition having excellent adhesion and flame resistance is completed, and then sealed and stored at room temperature before use.

That is, after mixing the ethanol, which is an additional solvent together with the rosin in a stirring container, at the same level and mixing for about 30 minutes or by mixing ethanol with rosin oil and mixing for about 5 minutes to form a liquefaction, the loess powder and calcium hydroxide are mixed. By mixing and stirring in an appropriate ratio, it is possible to implement a coating composition using rosin of good affinity to be applied to a wooden structure.

[Table 1]

When the resin mixture exceeded 5%, it was confirmed that the adhesive strength decreased by more than 2% and the glossiness decreased by 3%.

[Table 2]

It can be seen that as the specific gravity of loess and calcium hydroxide increases, the viscosity decreases.

[Table 3]

For reference, FIG. 1 is a photograph of a flame resistance test of an eco-friendly paint using rosin according to the present invention, which is applied to one side of a wooden plate of a certain thickness (particularly, spray coating using a spray gun as in the sample photo of FIG. 2) and not applied. As a result of igniting the other side with a torch lamp, the right part without paint was on fire, and it was confirmed that it was burnt black in 5 seconds.The left part where the paint was sprayed on fire did not burn immediately. It was confirmed that it burns slowly after 17 minutes, and it can be seen that the eco-friendly paint according to the present invention can significantly improve the lack of flame resistance (flame retardance), which is absolutely vulnerable to fire.

As a result of the above experiments, there is a difference in time to change from solid to liquid depending on the amount of rosin (rosin oil), and there is a difference in time to form conjunctiva depending on the amount of loess and calcium hydroxide (slaked lime). It was found that the difference in

Eventually, as a result of a number of experiments, based on 50-60Wt% of rosin oil in which the solid rosin was liquefied and mixed with high-purity ethanol or rosin oil from which terpine oil was removed from the rosin, the viscosity of rosin or terpine oil was weakened and fired. By mixing and stirring, including 30-40Wt% of loess powder of about 300-500Mesh to improve disaster prevention by improving the fragility of, and 1-10Wt% of calcium hydroxide of a strong basic compound to improve insect repellency, the present invention This natural resin, rosin or rosin oil has excellent strength and gloss, and is vulnerable to viscous and fire. It is not only insect-proof, disaster-preventing, and antibacterial function of the wood structure to be applied with the optimal formulation using loess powder and calcium hydroxide. It is possible to manufacture eco-friendly paints using rosin that can dramatically enhance durability.

For reference, FIG. 1 is a picture of a flame resistance test of an eco-friendly paint using rosin according to the present invention. As a result of applying to one side of a wooden plate of a certain thickness and lighting the other side of the uncoated wood with a torch lamp, the right side of which the paint was not applied It was confirmed that the part was burnt black in 5 seconds after the part was set on fire, and the left part where the paint was applied did not burn immediately even if it was ignited, and it was confirmed that it gradually burned after 17 minutes, so that the eco-friendly paint according to the present invention is absolutely It can be seen that the lack of weak flame retardancy (flame retardance) can be dramatically improved.

Claims (1)

Liquid rosin mixed by liquefied using high-purity ethanol so that it can be sprayed onto wooden structures, or 50-60Wt% of rosin oil from which terpine oil has been removed from the rosin is more than half of the total composition, and adhesion of rosin or rosin oil And 30-40Wt% of loess powder at the level of 300-500Mesh to improve disaster prevention, and 1-10Wt% of calcium hydroxide of a strong basic compound to improve antibacterial and hardenability. Eco-friendly paint.

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