KR102541050B1 - Flame retardant mat having weed control and manufacturing method thereof - Google Patents

Abstract

The present invention provides a weed control mat having flame retardant performance and a production method thereof, which has excellent flame retardant performance, blocks the emergence and growth of weeds, and can control pests and diseases. The weed control mat of the present invention comprises: a base sheet made of flame-retardant treated high-density polyethylene fiber; an upper sheet formed on the top of the base sheet to contain polyethylene terephthalate fiber, modacrylic fiber, glass fiber, alumina fiber, low-melting point polyester fiber, and magnesium whiskers; and a lower sheet formed on a lower part of the base sheet and consisting of first and second sheets made of flame-retardant polypropylene fiber, a melt-blown fiber body formed between the first and second sheets, and weed control powder adhering to and captured in the melt-blown fiber body.

Description

Flame retardant securing mat and manufacturing method thereof {FLAME RETARDANT MAT HAVING WEED CONTROL AND MANUFACTURING METHOD THEREOF}

The present invention relates to a weed-proof mat and a method for manufacturing the same, and more particularly, to a fire-retardant secured weed-proof mat that has excellent flame retardancy, blocks the occurrence and growth of weeds, and can prevent pests and pests, and a method for manufacturing the same.

Jwibulnori, one of the traditional folk customs in Korea, is a custom of setting fire to dry grass such as paddy fields or field ditches in rural areas to catch mice that damage crops and kill pests, eggs, and harmful bacteria attached to dry grass in fields. It is burned to get rid of it, and the remaining ash is used as fertilizer for the next farming so that the sprouts of grain grow well, and it has been handed down to this day.

In Korea, forests occupy approximately 70% of the total land area, and forests are often adjacent to rice paddies, ridges, and fields that are subject to Jwibulnori. It is frequently occurring, and recently, fires caused by cigarette fire or butts are also frequently occurring.

In addition, trees require a long period of growth from sprout to adult tree, so continuous management is required. management is needed for

As a prior art related to this, Patent Document 1 discloses a method for manufacturing a forest fire prevention mat having flame retardant, weed control and insect repellent functions, preparing flame retardant treated synthetic resin yarn, coating diatomaceous earth on flame retardant treated synthetic resin yarn, wild grass Preparing a solution, imbibing synthetic resin yarns treated with wild vinegar flame retardant and coated with diatomaceous earth, drying the impregnated synthetic resin yarns and then weaving them into a mat shape, and spraying the color coating liquid on the woven mat to heat-treat the yarn. A method for producing a forest fire prevention mat having flame retardant, weed control and insect repellent functions including a has been disclosed.

However, in the prior art described above, it is not easy to coat diatomaceous earth on synthetic resin yarns that have already been flame retardant, the adhesion between the yarn and diatomaceous earth is poor, and wild vinegar is discharged by rainwater, making it difficult to provide a continuous weed control function, and flame retardancy is also low. It lacks a lot, and there is a problem that it can be easily moved or slipped by wind or rain.

Republic of Korea Patent Registration No. 10-0934099 (published on December 24, 2009)

The present invention blocks the occurrence and growth of weeds, has excellent flame retardancy, prevents disease and pest damage, has excellent durability, can be used semi-permanently, and has adhesion to the ground, ensuring flame retardancy that can prevent movement or slipping after construction. Its purpose is to provide a mat and its manufacturing method.

The present invention relates to a base sheet made of flame-retardant high-density polyethylene fibers; an upper sheet formed on the base sheet and containing polyethylene terephthalate fibers, modacrylic fibers, glass fibers, alumina fibers, low melting point polyester fibers, and magnesium whiskers; and first and second sheets formed under the base sheet and made of flame retardant polypropylene fibers, meltblown fibers formed between the first and second sheets, and powder for weed control that is adhered to and captured by the meltblown fibers. Provides a fire retardant secured weed-proof mat comprising a lower sheet made of.

In addition, the present invention is a step of preparing a top sheet by heat-treating a fiber body formed by carding and laminating fibers obtained by mixing polyethylene terephthalate fiber, modacrylic fiber, glass fiber, alumina fiber, low melting point polyester fiber, and magnesium whisker. ; The thermoplastic resin is melted and spun into meltblown fibers, and after supplying powder for weed control to the meltblown fibers to be spun and blended, the meltblown fibers are continuously deposited and the powder for weed control is adhered to produce a captured meltblown fiber body, preparing a lower sheet by laminating first and second sheets made of flame retardant polypropylene fibers on the upper and lower parts of the blown fiber body, and then passing them through a heating roller and compressing them; Disposing the top sheet and the bottom sheet on top and bottom of a base sheet made of flame retardant high-density polyethylene fibers, respectively; and punching or bonding the top sheet, the base sheet, and the bottom sheet with a needle punching machine to bond them to each other.

According to the present invention, it has excellent flame retardancy, blocks the occurrence and growth of weeds, prevents pest damage, has excellent durability and can be used semi-permanently, and has adhesion to the ground to prevent movement or slippage after construction. there is

Figure 1a is a cross-sectional view of a fire retardant ensuring grass-proof mat according to an embodiment of the present invention.
Figure 1b is an exploded perspective view of a fire retardant ensuring grass-proof mat according to an embodiment of the present invention.
Figure 2 is a detailed view of the lower sheet according to an embodiment of the present invention.
3 is a view showing an example of an apparatus for producing a meltblown fiber body according to the present invention.
4 is a use state diagram in which the flame retardant securing weed-proof mat according to an embodiment of the present invention is installed in a roadside forest to suppress weeds.
Figure 5 is a flow chart of a method for manufacturing a flame retardant ensuring grass-proof mat according to an embodiment of the present invention.

Hereinafter, with reference to the drawings, it will be described in detail with reference to the embodiment with respect to the specific contents for implementing the flame retardant securing weed-proof mat according to the present invention.

The fire retardant securing weed-proof mat (1) according to the present invention has excellent flame retardancy and can prevent a forest fire or the spread of flames in advance, block the occurrence and growth of weeds, and prevent pests and diseases, FIG. 1a and FIG. Referring to 1b, the base sheet 10, the top sheet 20, and the bottom sheet 30 may be included, and a reinforcing sheet 40 or a grid network 50 may be further included.

The base sheet 10 is made of flame retardant treated high-density polyethylene fibers. In the present invention, flame retardant treated high-density polyethylene fibers are used to secure basic flame retardancy for forest fire prevention.

The base sheet 10 is made of flame-retardant high-density polyethylene fibers, has a dense molecular structure, has high strength, is not easily torn or damaged by impact, and has excellent moisture resistance to block evaporation and outflow of moisture, so that the base sheet ( 10) By keeping the lower part of water continuously contained, water can be continuously supplied to the forest and soil.

The top sheet 20 is formed on top of the base sheet. When burning cigarettes, rats, or burning twigs, fallen leaves, or garbage in rural areas, the fire may be transferred to the mat and cause a fire to spread to the surroundings. Polyethylene terephthalate fibers, modacrylic fibers, glass fibers, alumina fibers, low-melting polyester fibers and magnesium whiskers are included.

The top sheet 20 is manufactured by heat-treating a fiber body formed by carding and laminating fibers obtained by blending polyethylene terephthalate fiber, modacrylic fiber, glass fiber, alumina fiber, low melting point polyester fiber, and magnesium whisker, It can be dyed green for harmony with the natural environment.

The preferred content of each of these fibers is 20 to 30 parts by weight of modacrylic fiber, 20 to 30 parts by weight of low melting polyester fiber, 10 to 20 parts by weight of glass fiber, and 10 to 20 parts by weight of alumina fiber per 100 parts by weight of polyethylene terephthalate fiber. and 1 to 5 parts by weight of magnesium whiskers.

The polyethylene terephthalate fiber is added as a main material because it has excellent stiffness, heat resistance and light resistance, is less affected by temperature and humidity, and has excellent durability.

The modacrylic fiber is an acrylic synthetic fiber made from a polymer containing acrylonitrile as a main component. Diffusion can be prevented, and for this purpose, 20 to 30 parts by weight may be added per 100 parts by weight of polyethylene terephthalate fibers, and light resistance may be deteriorated when added excessively.

Since the low-melting polyester fiber has a melting point of 110 to 190 ° C., it is melted in this temperature range and functions as an adhesive to fuse various types of fibers to provide bonding strength between fibers, thereby improving mechanical strength, durability, etc., and burning It is first thermally decomposed to form a carbonized layer on the sheet to prevent the spread of fire. For this purpose, 20 to 30 parts by weight per 100 parts by weight of polyethylene terephthalate fiber is added, and excessive addition may cause heat shrinkage.

The glass fiber is a mineral fiber made of molten glass in the form of a fiber, and has excellent flame retardancy because it does not burn by enduring high temperatures, and is not absorbent, so that it does not absorb moisture and discharges it, so that weed seeds that have fallen on the top sheet 20 It blocks germination and growth, and has excellent tensile strength and corrosion resistance. To this end, 10 to 20 parts by weight is added per 100 parts by weight of polyethylene terephthalate fiber.

The alumina fiber is a fiber having a structure in which microcrystals of alumina are aggregated, and has a high elastic modulus that is three times higher than that of glass fiber, and has excellent heat resistance, corrosion resistance, and abrasion resistance, to compensate for the brittleness of glass fiber, and per 100 parts by weight of polyethylene terephthalate fiber. 10 to 20 parts by weight are added.

The magnesium-based whiskers are acicular fibers and are added in an amount of 1 to 5 parts by weight per 100 parts by weight of polyethylene terephthalate fibers. The magnesium whisker contains light and high strength magnesium to increase strength when blended, has excellent heat resistance, and serves to reinforce rigidity and impact resistance. If the magnesium-based whisker is less than 1 part by weight, impact strength, stiffness and impact resistance may decrease, and if it exceeds 5 parts by weight, the weight increases due to an increase in specific gravity, and the surface of the top sheet may become unstable.

Referring to FIG. 2, the lower sheet 30 is a meltblown fiber body formed between first and second sheets 31 and 32 made of flame retardant polypropylene fibers and the first and second sheets 31 and 32. (33) and powder for weed control (34) captured in the meltblown fiber body (33).

The flame retardant polypropylene fiber is a flame retardant treated polypropylene fiber, has almost no hygroscopicity to absorb and store moisture, but has excellent air permeability and allows moisture to easily pass through, so that the first sheet 31 or the second sheet ( 32), and the moisture introduced into the inside through the first sheet 31 or the second sheet 32 is absorbed by the meltblown fiber body 33 and temporarily stored. It can be discharged and supplied to trees.

Referring to FIG. 3 , the meltblown fiber body 33 is manufactured by the following method. First, a thermoplastic resin is introduced into the extruder 2 together with additives and kneaded. At this time, the thermoplastic resin may be polyethylene, polypropylene, polyester, polyamide, polycarbonate, etc., and heat applied through a heat jacket, frictional heat, and screw rotation It is melted and extruded by the pressure applied by it, and high-temperature and high-speed compressed air (6) is sprayed to collide with the fibers so that they are thinly blown into the air through the orifice (3) to emit meltblown fibers in the direction of the collector (4). let it At this time, after blending is performed by supplying the powder for weed control 34 through the supply means 5 to the position where the meltblown fibers are spun, it is continuously deposited in the collector 4 in the horizontal direction to form a complex meltblown fiber body. (33) is made. At this time, the meltblown fibers spun through the orifice 3 and fall to the collector 4 are in a hot state, but are rapidly cooled, so that the powder for weed control 34 is in a position where it can be adhered to the meltblown fibers in a hot state. It is preferable that spraying of the powder for weed control 34 is made.

In this way, the meltblown fiber 33 acts as a kind of filter, and the weed control powder 34 is physically attached to the inside to be captured, thereby blocking the occurrence and growth of weeds in the soil around the tree, and preventing pests and diseases. can prevent

In addition, the first and second sheets 31 and 32 made of flame retardant polypropylene fibers are laminated on the upper and lower portions of the meltblown fiber body 34, respectively, and then compressed by passing through a heating roller to form a lower sheet 30. are manufactured

The powder for grass 34 may include attapulgite, sericite, peppermint powder, pine needle powder, cinnamon powder, and white charcoal powder.

The attapulgite is microcrystalline, has a tunnel structure by a chain structure of silicic acid tetrahedron, is a light and porous ultra-fine clay mineral, supports the lower sheet 30, provides flame retardancy, and is composed of ultra-fine particles and has absorbent properties. It is excellent in absorbing moisture, storing it inside, and then discharging it to the soil to supply moisture to trees, and 25 to 40% by weight is added.

The sericite is a mica-like mineral composed of very dense and fine particles, which increases cohesiveness by filling the gaps of the meltblown fibers 33, has a small scale-like or foliar structure, and has antibacterial and deodorizing functions, For this purpose, 10 to 20% by weight is added.

The peppermint powder is powdered peppermint leaves and contains menthol, which is a major component, and menthol is insoluble in water, corresponds to a repellent material for insects, and has strong antibacterial power to inhibit the germination of weeds and to prevent harmful plant pathogens It is also effective in preservatives and deodorization, so 20 to 30% by weight is added.

The pine needle powder contains a large amount of ascorbic acid, vitamins, phytoncides, flavonoids, anthocyanins, tannins and essential oils, etc., and can prevent the access of insects and harmful bacteria, has deodorizing, antiseptic and antibacterial effects, and contains 10 to 20 weight % is added.

The cinnamon powder is a powder obtained by peeling and drying the inner bark of the cinnamon tree. It has a pungent characteristic smell and contains ingredients that insects do not like, such as cinnamon aldehyde and salicyl aldehyde, and is excellent in deodorizing, insect repellent and harmful organism repellent effects. Add 20%.

The white charcoal powder is a charcoal powder made by sufficiently proceeding carbonization rather than gum charcoal using hard wood such as oak as a raw material. It has a strong antibacterial function to suppress the germination of weeds and remove harmful plant pathogens, and for this purpose, 1 to 5% by weight is added.

In addition, in the fire retardant securing weed-proof mat 1 according to the present invention, a reinforcing sheet 40 may be formed between the base sheet 10 and the lower sheet 30, and the reinforcing sheet 40 is made of alumina and silica. It is made of composite fibers, for example, can be made of 60 to 80% by weight of alumina fibers and 20 to 40% by weight of silica fibers, has excellent strength and durability, has a dense structure, and blocks the movement of nutrients to prevent weeds from growing. It can withstand a high temperature of 1,200℃ and has excellent heat resistance.

The grid network 50 is formed on the lower part of the lower sheet 30 and presses the soil of the ground to settle the flame retardant securing weed-proof mat 1, and is made in a grid shape so that the fire retardant securing weed-proof mat 1 is on the ground or on an inclined surface It prevents slipping and can be flexibly bent so that it can be closely supported on the ground.

The grid network may include 40 to 60% of polyphenylene sulfide resin, 15 to 25% of low density polyethylene resin, 10 to 20% of polymethyl methacrylate, 10 to 20% of scrubber powder, and 1 to 5% of SBR in weight percent. can

The polyphenylene sulfide resin is a semi-crystalline thermoplastic resin produced by the reaction of p-dichlorobenzene and sodium sulfide, and has excellent heat resistance, chemical resistance and weather resistance, excellent mechanical strength, and 40 to 60% by weight is added. .

The low-density polyethylene resin provides elasticity and elasticity, has excellent impact resistance, and is added in an amount of 15 to 25% by weight.

The polymethyl methacrylate increases bonding strength between particles with excellent viscosity and adhesive strength, and is added in an amount of 10 to 20% by weight.

The loofah powder is added in an amount of 10 to 20% by weight. The loofah refers to the dried spongy tissue part of the fruit of loofah cucumber, has a net-shaped fiber, and the loofah's network structure has a characteristic that the surface is formed rough, and is evenly distributed. It is dispersed and increases the specific surface area through the network structure and its roughness to provide adhesive force and frictional force, thereby increasing sliding resistance.

The SBR is a styrene-butadiene synthetic rubber, which has excellent strength and abrasion resistance, has elasticity, and can provide frictional force to the contact surface.

In addition, the upper sheet 20 may be coated with an upper coating layer 25 on the surface to further enhance flame retardancy and to enhance weed control to inhibit weed germination and growth.

To this end, the upper coating layer 25 is based on 100 parts by weight of silicone resin, 20 to 30 parts by weight of aluminum hydroxide, 20 to 30 parts by weight of butyl alcohol acrylate, 20 to 30 parts by weight of sodium silicate, 10 to 20 parts by weight of acetic acid, and 10 to 20 parts by weight of sodium carbonate, 10 to 20 parts by weight of 1,2 hexanediol, 10 to 20 parts by weight of methylene diphenyl diisocyanate, 10 to 20 parts by weight of tannic acid, 5 to 10 parts by weight of chlorinated paraffin, carbonylbiscapro 1 to 5 parts by weight of lactam, 1 to 5 parts by weight of xanthan gum, 1 to 5 parts by weight of tromethamine, and 0.5 to 2 parts by weight of a UV stabilizer may be included.

The silicone resin is stretchable and exhibits elasticity and flexibility to prevent cracking of the upper coating layer 25, has excellent adhesion, and has excellent heat resistance, moisture resistance, light resistance and weather resistance, thereby improving the preservation of the upper coating layer 25 , the moisture on the surface is not absorbed and evaporated, which can block the germination and growth of weeds.

The aluminum hydroxide is a hydroxide of aluminum that is added as an inorganic flame retardant. It is inexpensive and has a property that is not volatilized by heat, so that after decomposition, an incombustible gas is generated to prevent access of oxygen and dilute flammable gas. To this end, silicon 20 to 30 parts by weight are added per 100 parts by weight of the resin.

The butyl alcohol acrylate controls the viscosity of the composition, emulsifies the properties of the composition, increases adhesion and adhesion, reduces the difference between contraction and expansion due to external temperature difference, and forms a film to reduce corrosion due to external factors To prevent this, 20 to 30 parts by weight per 100 parts by weight of the silicone resin is added.

The sodium silicate is added in an amount of 20 to 30 parts by weight per 100 parts by weight of the silicone resin to increase the surface strength of the upper coating layer 25 and increase flame retardancy, chemical resistance and corrosion resistance.

The acetic acid is a carboxylic acid having antibacterial and antifungal properties, which can kill plants by inhibiting carbohydrate metabolism, and prevent germination or growth as weeds even if weed seeds fall on the top of the flame-retardant weed-proof mat (1). In addition, 10 to 20 parts by weight is added per 100 parts by weight of the silicone resin for weed control.

The sodium percarbonate is used as a detergent or bleach, and can remove weeds, mold or bacteria, and is added in an amount of 10 to 20 parts by weight per 100 parts by weight of the silicone resin for weed prevention and release.

The 1,2 hexanediol may be included in 10 to 20 parts by weight per 100 parts by weight of the silicone resin, and has strong antibacterial activity to inhibit weed growth and act as an antiseptic substance to preserve the components included in the composition to exert their functions. make it possible

The methylene diphenyl diisocyanate is an aromatic diisocyanate chemical substance, and has excellent thermal insulation properties to prevent heat conduction to prevent deformation due to external temperature change, increase durability, and contains 10 to 20 parts by weight per 100 parts by weight of the silicone resin , When 20 parts by weight is exceeded, dispersibility and flowability may be deteriorated.

The tannic acid is a powder composed of calotanin, and has antibacterial and antioxidant properties to prevent access of insects and harmful bacteria, and is added in an amount of 10 to 20 parts by weight per 100 parts by weight of the silicone resin.

The chlorinated paraffin is an organic flame retardant, which minimizes combustion by replacing radicals that generate a continuous exothermic reaction generated during the combustion of a forest fire with inactive chlorine. However, it is preferable to add 10 parts by weight or less due to environmental problems caused by chlorine emission.

The carbonylbiscaprolactam is added to improve heat resistance, to resist high temperatures and to increase resistance to sunlight, and is preferably included in an amount of 1 to 5 parts by weight per 100 parts by weight of the silicone resin.

The xanthan gum has excellent heat resistance, has a wide pH range, increases tackiness and viscosity, and exhibits binding force between components constituting the composition to prevent separation due to differences in specific gravity. To this end, per 100 parts by weight of the silicone resin 1 to 5 parts by weight may be added.

The tromethamine may be included in an amount of 1 to 5 parts by weight per 100 parts by weight of the silicone resin. As an organic compound having basicity, it has excellent pH buffering ability, increases fluidity, and can prevent oxidation of the composition.

The UV stabilizer is added to block and absorb UV rays to prevent the upper coating layer 25 from being decomposed by UV rays and discolored or damaged, and may be added in an amount of 0.5 to 2 parts by weight per 100 parts by weight of the silicone resin.

Hereinafter, with reference to Figure 5 will be described in detail with respect to the manufacturing method of the flame retardant ensuring grass-proof mat according to the present invention.

First, the upper sheet 20 is prepared by heat-treating a fiber body formed by carding and laminating fibers obtained by mixing polyethylene terephthalate fiber, modacrylic fiber, glass fiber, alumina fiber, low melting point polyester fiber, and magnesium whisker.

In addition, the thermoplastic resin is melted and spun into meltblown fibers, and the meltblown powder 34 is supplied to the spun meltblown fibers for blending, and the meltblown powder 34 is continuously deposited to adhere and capture the meltblown. A raw fiber body 33 is prepared, and the first and second sheets 31 and 32 made of flame retardant polypropylene fibers are laminated on the top and bottom of the melt blown fiber body 33, respectively, and then passed through a heating roller to compress To manufacture the lower sheet (30).

In addition, the top sheet 20 and the bottom sheet 30 are disposed on the top and bottom of the base sheet 10 made of high-density polyethylene fibers subjected to flame retardant treatment, respectively, and the top sheet 20, the base sheet 10 and The lower sheet 30 is bonded to each other by punching or bonding with a needle punching machine.

At this time, a reinforcing sheet 40 made of composite fibers of alumina and silica may be additionally disposed between the base sheet 10 and the lower sheet 30, and may be bonded to each other by punching with a needle puncher or by bonding.

In addition, a lattice-shaped grid network 50 may be coupled to the lower portion of the lower sheet 30 .

In addition, 20 to 30 parts by weight of aluminum hydroxide, 20 to 30 parts by weight of butyl alcohol acrylate, 20 to 30 parts by weight of sodium silicate, 10 to 20 parts by weight of acetic acid per 100 parts by weight of silicone resin on the surface of the top sheet 20, 10 to 20 parts by weight of sodium percarbonate, 10 to 20 parts by weight of 1,2 hexanediol, 10 to 20 parts by weight of methylene diphenyl diisocyanate, 10 to 20 parts by weight of tannic acid, 5 to 10 parts by weight of chlorinated paraffin, carbonylbis The upper coating layer 25 may be formed by applying a coating solution containing 1 to 5 parts by weight of caprolactam, 1 to 5 parts by weight of xanthan gum, 1 to 5 parts by weight of tromethamine, and 0.5 to 2 parts by weight of a UV stabilizer.

The flame retardant securing weed-proof mat 1 manufactured in this way is used by cutting to a certain standard so as to have a length and width desired by the user, and may be used by drilling a hole when installed in a place where a tree is located.

[Invention Example 1]

Fibers blended with 100 parts by weight of polyethylene terephthalate fiber, 21 parts by weight of modacrylic fiber, 12 parts by weight of glass fiber, 12 parts by weight of alumina fiber, 25 parts by weight of low-melting polyester fiber and 2 parts by weight of magnesium whisker are carded and laminated. The formed fiber body is heat treated to manufacture the top sheet 20.

In addition, polypropylene fibers are introduced into an extruder together with additives and kneaded, melted and extruded by heat and frictional heat applied through a heat jacket and pressure applied by screw rotation, and high-temperature and high-speed compressed air is sprayed to obtain polypropylene fibers and It collides and blows finely into the atmosphere through the orifice, spinning the meltblown fibers in the direction of the collector. At the same time, the powder for weed control 34 is sprayed to the location where the meltblown fibers are spun, and blending is performed, continuously depositing in the collector in the horizontal direction to produce a complex meltblown fiber body 33. At this time, the powder for weed control 34 is composed of 30% by weight of attapulgite, 15% by weight of sericite, 25% by weight of peppermint powder, 15% by weight of pine needle powder, 12% by weight of cinnamon powder, and 3% by weight of white charcoal powder.

In addition, the first and second sheets 31 and 32 made of flame retardant polypropylene fibers are laminated on the top and bottom of the meltblown fiber body 33, respectively, and then compressed by passing through a heating roller to manufacture a lower sheet 30. do.

In addition, the upper sheet 20 and the lower sheet 30 are disposed on the upper and lower portions of the base sheet 10 made of high-density polyethylene fibers treated with flame retardancy, respectively, and punched with a needle punching machine to bond them together to obtain a flame retardant thickness of 6 mm. A secure weed-proof mat (1) is manufactured.

[Invention Example 2]

The base sheet 10, the top sheet 20, and the bottom sheet 30 prepared in the same manner as in Inventive Example 1 were prepared, and the top sheet 20 and the bottom sheet 30 were placed on the top and bottom of the base sheet 10, respectively. ) is disposed, and a reinforcing sheet 40 made of composite fibers of 70% by weight of alumina fibers and 30% by weight of silica fibers is further disposed between the base sheet 10 and the lower sheet 30, and punched with a needle punching machine By combining with each other, a flame retardant secured weed-proof mat (1) having a thickness of 7 mm is manufactured.

[Invention Example 3]

A base sheet 10, an upper sheet 20, and a lower sheet 30 prepared as in Example 1 were prepared, and 25 parts by weight of aluminum hydroxide and 22 parts by weight of butyl alcohol acrylate per 100 parts by weight of silicone resin were applied to the surface of the upper sheet. parts by weight, sodium silicate 23 parts by weight, acetic acid 15 parts by weight, sodium percarbonate 11 parts by weight, 1,2 hexanediol 16 parts by weight, methylene diphenyl diisocyanate 15 parts by weight, tannic acid 11 parts by weight, chlorinated paraffin 7 parts by weight , 3 parts by weight of carbonylbiscaprolactam, 2 parts by weight of xanthan gum, 2 parts by weight of tromethamine, and 1 part by weight of an ultraviolet stabilizer are applied to form an upper coating layer 25 to secure flame retardancy of 7 mm thick weed-proof mat (1 ) to produce

[Comparative Example 1]

400 g of flame retardant treated polyethylene fibers were prepared, and the prepared flame retardant treated polyethylene fibers were coated at a ratio of 1 g of diatomaceous earth. In addition, 0.06 g of Pasqueflower root, 0.6 ℓ of jasmine conjugate, and 3 g of Hoseongcho are mixed in 1 liter of water, boiled in a pressure kiln for 40 minutes, and then cooled to prepare wild vinegar. Then, the flame-retardant polyethylene fibers coated with diatomaceous earth are dipped in wild vinegar solution for 1 hour, and the impregnated yarn is dried and spongy to be woven into a mat having a thickness of 5 mm. And, after coating the woven mat with a green color coating liquid, heat treatment is performed for 30 minutes to prepare a mat.

[Comparative Example 2]

After placing the UV-treated polyethylene fibers on the flame-retardant treated polyethylene fibers, punch them with a needle punching machine to bond them together, and then heat the outer surface of the surface layer to about 150 ° C using a heating roller and compress it to make the surface smooth. A mat was made.

[Experimental example]

1. Flame retardant

In the evaluation of flame retardancy, the 'UL 94 V (Vertical Burning Test)' evaluation method used by the Korea Conformity Laboratories was used by using the flame retardant secured weed-proof mats prepared in Inventive Examples 1 to 3 as samples, and the results are shown in the table below 2.

More specifically, the 'UL 94 V' flame retardancy evaluation is to evaluate the combustion aspect of the sample and the degree of flame propagation to the surroundings when a flame is applied in the vertical direction of the sample, and the sample was cut to a size of 100 × 50 mm. After applying a 20 mm long flame to the sample for 10 seconds, the burning time t1 of the sample is measured and the burning pattern is recorded. When the combustion is finished after the first folding, the burning time t2 and the glowing time t3 of the sample after 10 seconds of folding are measured, and the burning pattern is recorded. Finally, by determining the burning period and burning pattern of t1, t2, and t3 (whether cotton wool is ignited by dropping, whether or not it burns up to the clamp, etc.), the flame retardancy grade is V-0 (highest grade), V-1, V- Calculate in 2 order. As shown in Table 1 below, the evaluation criteria give a flame retardancy grade according to the burning time t1, t2, t3 and the burning pattern of the sample.

[Table 1]

[Table 2]

As shown in Table 2, Inventive Examples 1 to 3 according to the present invention satisfied the flame retardancy rating of 'V-0', confirming that the flame retardancy was superior to that of the mats of Comparative Examples 1 and 2.

2. Flame retardant

It was measured for flame retardancy by KOFEIS 1001, a Korean flame retardant performance standard, and the results are shown in Table 3 below. In addition, the heat release rate was measured by KS F ISO 12949, which is a test method for bed mattresses and mattress sets, and the results are shown in Table 4 below. In this case, the maximum heat release rate (peak HRR) is 200 kW or less, and the total heat release rate (THR _{10 min} ) for 10 minutes is 15 MJ or less as a criterion for the mattress.

[Table 3]

[Table 4]

As shown in Tables 3 and 4, it was confirmed from the flame retardant test results that the flame retardant weed-proof mats of Inventive Examples 1 to 3 according to the present invention have excellent flame retardancy compared to Comparative Examples 1 and 2.

3. Other

Tensile strength was measured using KS K 0521, and specimens of Inventive Examples 1 to 3 and Comparative Examples 1 and 2 having a width × length = 5 × 20 cm were measured using INSTRON's measuring equipment, and the upper and lower 5 × 5 cm jig After biting, the tensile speed was measured at 200 mm/min.

Self-extinguishing means that the flame goes out and combustion does not continue when the fuse is removed, and MS300-080 was used.

Accelerated weathering is a test in which the weather effect is artificially strengthened to examine the durability of materials in outdoor use in a short period of time. used

The results of this test are shown in Table 5 below.

[Table 5]

As shown in Table 5, the flame retardant securing weed-proof mats of Inventive Examples 1 to 3 according to the present invention have excellent tensile strength and excellent flame retardancy due to excellent self-extinguishing properties compared to Comparative Examples 1 and 2, and excellent durability due to excellent accelerated weather resistance. I was able to confirm this excellence.

After all, the flame retardant securing weed-proof mat and its manufacturing method according to the present invention have excellent flame retardancy, block the occurrence and growth of weeds, prevent pests and diseases, have excellent durability, can be used semi-permanently, and have adhesion to the ground, so that after construction It can move or prevent slipping.

The above embodiment in the present invention is an example, and the present invention is not limited thereto. Anything having substantially the same configuration as the technical concept described in the claims of the present invention and achieving the same operational effect is included in the technical scope of the present invention.

1. Grass-proof mat
10. Base sheet
20. Top sheet
25. Top coating layer
30. Lower seat
31. First sheet
32. Second seat
33. Meltblown fibers
34. Weed control powder
40. Reinforcement sheet
50. Grid network

Claims (9)

A base sheet made of flame-retardant high-density polyethylene fibers;
an upper sheet formed on the base sheet and containing polyethylene terephthalate fibers, modacrylic fibers, glass fibers, alumina fibers, low melting point polyester fibers, and magnesium whiskers; and
First and second sheets formed under the base sheet and made of flame retardant polypropylene fibers, meltblown fibers formed between the first and second sheets, and weed control powder adhered to and captured by the meltblown fibers A fire retardant secured weed-proof mat comprising a lower sheet made of.
According to claim 1,
A flame retardant securing weed-proof mat further comprising a reinforcing sheet formed between the base sheet and the lower sheet and made of composite fibers of alumina and silica.
According to claim 1,
Further comprising a lattice-shaped grid network formed on the lower part of the lower sheet and fixedly supported on the ground,
The grid network includes 40 to 60% of polyphenylene sulfide resin, 15 to 25% of low density polyethylene resin, 10 to 20% of polymethyl methacrylate, 10 to 20% of scrubber powder, and 1 to 5% of SBR in weight percent. Flame retardant weed-proof mat.
According to claim 1,
The fire-proof powder is flame retardant secured grass-proof mat containing attapulgite, sericite, peppermint powder, pine needle powder, cinnamon powder and white charcoal powder.
According to claim 1,
On the surface of the top sheet, per 100 parts by weight of silicone resin, 20 to 30 parts by weight of aluminum hydroxide, 20 to 30 parts by weight of butyl alcohol acrylate, 20 to 30 parts by weight of sodium silicate, 10 to 20 parts by weight of acetic acid, 10 to 20 parts by weight of sodium percarbonate parts by weight, 10 to 20 parts by weight of 1,2 hexanediol, 10 to 20 parts by weight of methylene diphenyl diisocyanate, 10 to 20 parts by weight of tannic acid, 5 to 10 parts by weight of chlorinated paraffin, 1 to 5 parts by weight of carbonylbiscaprolactam Part, 1 to 5 parts by weight of xanthan gum, 1 to 5 parts by weight of tromethamine, and 0.5 to 2 parts by weight of a UV stabilizer.
preparing a top sheet by heat-treating fibers formed by carding and laminating fibers obtained by blending polyethylene terephthalate fibers, modacrylic fibers, glass fibers, alumina fibers, low-melting polyester fibers, and magnesium whiskers;
The thermoplastic resin is melted and spun into meltblown fibers, and after blending by supplying powder for weed control to the meltblown fibers to be spun, it is continuously deposited to produce a meltblown fiber body in which the powder for weed control is adhered and captured, preparing a lower sheet by laminating first and second sheets made of flame retardant polypropylene fibers on the upper and lower parts of the blown fiber body, and then passing them through a heating roller and compressing them;
Disposing the top sheet and the bottom sheet on top and bottom of a base sheet made of flame retardant high-density polyethylene fibers, respectively; and
A method of manufacturing a flame retardant securing grass-proof mat comprising the step of punching or bonding the top sheet, base sheet, and bottom sheet with a needle punching machine to bond them to each other.
According to claim 6,
A method for producing a flame retardant securing weed-proof mat, characterized in that a reinforcing sheet made of alumina and silica composite fibers is disposed between the base sheet and the lower sheet and bonded to each other by punching or bonding with a needle punching machine.
According to claim 6,
Method for producing a fire retardant securing weed-proof mat further comprising the step of coupling a grid network of a grid shape to the lower portion of the lower sheet.
According to claim 6,
On the surface of the top sheet, per 100 parts by weight of silicone resin, 20 to 30 parts by weight of aluminum hydroxide, 20 to 30 parts by weight of butyl alcohol acrylate, 20 to 30 parts by weight of sodium silicate, 10 to 20 parts by weight of acetic acid, 10 to 20 parts by weight of sodium percarbonate 20 parts by weight, 10 to 20 parts by weight of 1,2 hexanediol, 10 to 20 parts by weight of methylene diphenyl diisocyanate, 10 to 20 parts by weight of tannic acid, 5 to 10 parts by weight of chlorinated paraffin, 1 to 5 parts by weight of carbonyl biscaprolactam Forming an upper coating layer by applying a coating solution containing 1 to 5 parts by weight of xanthan gum, 1 to 5 parts by weight of tromethamine, and 0.5 to 2 parts by weight of a UV stabilizer A method for producing a fire retardant secured weed-proof mat further comprising the step of forming an upper coating layer. .

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