KR20110091297A - Pe composition that substitutes pvc and method of preparing the composition, and wallpaper made thereof - Google Patents

Abstract

PURPOSE: An environment-friendly wallpaper composition is provided to ensure excellent adhesive force while not discharging volatile organic compounds such as formaldehyde, benzene, and toluene and to prepare an environment-friendly laminated wallpaper with excellent permeability and durability. CONSTITUTION: An environment-friendly wallpaper composition comprises: a low density polyethylene resin having a density range of 0.91-0.93 g/cm^3; 5-10 weight% of natural ore mixed powder including two or more material selected from zeolite, tourmaline, elvan, kiyoseki, sericite, illite, germanium, and talcum; 5-10 weight% of an rare earth inorganic material including moissanite, bastnaesite, or mixture thereof; 5-7 weight% of a magnetic nano composite composition including ferrous oxide, ferric oxide, or mixture thereof; 15-20 weight% of water soluble ink; 5-7 weight% of a natural adhesive composition; and the remaining amount of water.

Description

PPE (polyvinyl chloride) alternative PE (polyethylene) composition and method for manufacturing the same and wallpaper using the same {PE Composition that Substitutes PVC and Method of Preparing the Composition, and Wallpaper Made Various}

The present invention relates to a PE composition for wallpaper and a method for producing the environmentally friendly thin film that does not generate environmental hormones or volatile organic compounds (VOCs). In addition, the present invention relates to a laminated wallpaper and a method of manufacturing a laminated wallpaper in which a thin film is formed of the PE composition.

More specifically, the PE composition according to the present invention is characterized in that it comprises a PE resin, natural ore mixed powder, rare earth inorganic material, magnetic nanocomposite material, aqueous ink, natural adhesive composition, the method of producing the PE composition is Mixing and stirring the composition several times, characterized in that it comprises the step of aging. In addition, the method for producing a wallpaper according to the present invention includes the step of applying the composition to the surface of the base paper to form a thin film at high temperature to mature.

The wallpaper is mainly used for finishing the cement walls of buildings such as houses, apartments, buildings, etc., and various colors and patterns are printed to determine the interior atmosphere according to the taste of the contractor. However, in a building, condensation may occur on the cement wall that divides the indoor and outdoor spaces due to the difference in temperature between the inside and the outside. Accordingly, the wallpaper should function to block the condensation in addition to the decorative effect. .

There are various types of wallpaper, such as laminated wallpaper, silk wallpaper, and textile wallpaper, depending on the form, and four kinds of wallpaper are classified into silk wallpaper, paper wallpaper, foam wallpaper, and fabric wallpaper. In particular, silk wallpaper has a wide variety of colors and materials, has excellent pollution resistance and workability, and has been widely used in practice.

The most widely used wallpaper is polyvinylchloride (PVC) silk wallpaper, because PVC and paper are easily peeled off, so it is easy to reconstruct and easy to manage even if stained. PVC silk wallpaper contains a plasticizer, dioctylphthalate (DOP), to suppress the thermal decomposition of the PVC and to give it elasticity.However, since the foaming temperature of 150-200 ℃ is applied in the manufacturing process, It is pyrolyzed and the DOP is released into the air.

Pyrolysis products or DOP of PVC are known to generate environmental hormones or environmental hormone precursor materials. In addition, since PVC contains chlorine (Cl), a representative pollutant halogen material, PVC silk wallpaper is never environmentally friendly.

Therefore, research on wallpaper that does not emit environmental hormones is continuously conducted, and Korean Patent No. 10-048576 on polyethylene wallpaper using polyethylene foam of electron beam crosslinking type proposes an eco-friendly wallpaper using polyethylene foam, We proposed a technique to minimize the generation of harmful gases in the fire by excluding DOP and methyl ethyl ketone based oily ink.However, since the resin adhesive is used to bond the PE foam to the paper, it is not considered to have completely excluded the hazardous chemicals. Since PE is poorly ventilated, it has problems of conventional PE wallpaper, such as condensation, deterioration of durability, and generation of harmful microorganisms.

In addition, Korean Patent No. 10-076954 on an eco-friendly wallpaper using a water-soluble synthetic resin discloses water, methane, aqueous alcohol, isobutane or isopentane-based water foaming agent, titanium dioxide, emulsifier, talc, soft hair powder, pulp After applying, foaming and drying an aqueous acryl sol mixture having a composition of powder, synthetic resin, etc., a method of manufacturing by cooling and winding process is proposed, but it also contains many organic compounds, thus completely encroaching on fear of environmental hormone generation. You can't.

Recently, in Korean Patent No. 10-0812511, a vinyl chloride-based foam resin composition for nontoxic and low-odor wallpaper has been proposed, which has a low emission amount of volatile organic compounds, excellent foaming ratio, foam color and foam cell state, and foam heat resistance. Since it contains a vinyl chloride resin, a terephthalic acid ester plasticizer, and a blowing agent, it does not generate | occur | produce a volatile organic compound, and since it contains halogens, such as Cl, there is still an improvement.

The present invention is to solve the problems of the prior art, propose a PE composition to replace the PVC, and further provide a wallpaper excellent in adhesive strength by forming a thin film of the PE composition on the laminated paper, excellent breathability of the PE thin film It aims to do it.

In order to achieve the above object, the PE composition for wallpaper according to the present invention is 55-60 wt% polyethylene resin, 5-10 wt% natural mineral mixed powder, 5-10 wt% rare earth inorganic material, magnetic nanocomposite material 5-7 Weight%, 15-20% by weight aqueous ink, 5-7% by weight natural adhesive composition, 5-10% by weight methanol and water as remainder, optionally 1-2% by weight of antimicrobial agent, 1- 2 wt% antifungal agent, 1-5 wt% phytoncide extract.

Hereinafter, the PE composition for wallpaper according to the present invention will be described in detail.

Polyethylene (PE) resin is an eco-friendly material that can replace PVC because it is stable in structure and does not emit harmful substances such as VOCs and formaldehyde. However, PE resin is hydrophobic and difficult to coat with paper, is not breathable, and peeling phenomenon is likely to occur between the paper and the PE thin film in the process of forming a wallpaper pattern or embossing process.

Accordingly, the polyethylene resin used in the present invention uses a low density polyethylene having a density of about 0.91-0.93 g / cm ³ among high pressure polyethylene prepared at 1,000 atm, 200 ° C. or higher, and high pressure, and mixed with natural ore mineral powder. By efficiently combining the rare earth inorganic material and the magnetic nanocomposite material, it is possible to provide a wallpaper composition which is efficiently adhered to the paper and retains breathability.

If the content of the polyethylene resin is less than 55% by weight may be insufficient adhesion, antimicrobial, adsorption, etc., if the content of more than 65% by weight, the adhesive, antimicrobial and the like tends to converge rather than increase, based on the total weight of the composition 55 wt%, preferably 55-60 wt%.

In addition, the structure of the polyethylene resin may be linear or branched polymer, depending on the polymerization method, but may be a variety of forms, such as linear low density PE (LLDPE) or low density PE (LDPE) of 0.91-0.93g / cm ³ It is desirable to.

The composition according to the present invention is breathable by containing a mixed natural mineral powder, and at the same time, it is possible to obtain additional advantageous effects of emitting anions and far infrared rays. In addition, the natural ore mixed powder may be mixed with the PE resin to form a uniform structure to adsorb and remove toxic substances such as volatile organic compounds.

The natural ore mixed powder uses a mixture of two or more minerals selected from zeolite, tourmaline, elvan, precious stone, mica, illite, germanium, diatomaceous earth, talc, and preferably a mixture of three or more minerals. . In addition, the content may be contained 5-10% by weight, preferably 5-8% by weight.

Since zeolite has a high water content and has a property of adsorbing particulate matter in the pores when the water is released at high heat, the structure of the composition can be made firm even after heat treatment, so that any aluminum silicate hydrate can be used. Tourmaline, also known as tourmaline, is a mineral that emits negative ions and far infrared rays, and elvan is also a well known mineral that emits far infrared rays. Guiyang generates 25,000 negative ions, 10 times more than tourmaline per 1cc, and is a natural substance beneficial to the human body with a far infrared emission rate of 96%. The components of gemstones are known as SiO ₂ , Al ₂ O ₃ , Fe ₂ O ₃ , TiO ₂ , CaO, MgO, K ₂ O, Na ₂ O. Cicadas, also known as sericite, are minerals that produce 95% or more of far-infrared radiation at 5-200 micrometers at about 20 ° C to 25 ° C. _Illite is a monoclinic mica group mineral of formula (K, H ₃ O) Al ₂ (Si, Al) ₄ O ₁₀ (H ₂ O, OH) ₂ .

The ore as described above is too small a particle size, the breathability is insufficient, if the particle size is too large 20nm or more rough surface layer of the PE composition, the average particle size should be used 5-20nm, preferably 5-10nm It is good to use it by grinding.

The rare earth inorganic material used in the present invention may be an oxide of these metals or a mixture of oxides, as long as the metal is mainly composed of elements of atomic number 21, 39, 57-71, such as scandium, yttrium, and lanthanum. May be used after grinding. In addition, the rare earth inorganic material preferably has an average particle diameter of 1-50 nm, it can be dispersed in water and used in the form of an emulsion. In addition, the content of the rare earth mineral is suitably 5-10% by weight based on the total composition.

The composition according to the present invention is characterized by ensuring magnetic permeability by including a magnetic nanocomposite material, the magnetic nanocomposite material also functions as an antimicrobial agent.

The magnetic material can be magnetized repeatedly in the magnetic field and can also be easily potato. The magnetic nanocomposite material has an average particle diameter of 100-50 nm, preferably 50-10 nm, by milling one or more magnetic materials selected from the group consisting of ferrous oxide (FeO) and ferric oxide (Fe ₂ O ₃ ). More preferably 10-1 nm or less, followed by heat treatment at a temperature of 300-500 ° C., preferably 500-800 ° C., more preferably 800-1,000 ° C., in a magnetic or magnetic field of 1,000-10,000 gauss. Use it. The content is suitably 5-7% by weight.

In the present invention, the pigment included in the ink may be used in general, the pigment used in the printing process, but preferably used is made of natural ingredients collected from plants. Pigments made from natural ingredients can be expressed with more precise color because the particles are multiplied.

However, the solvent (solvent) included in the ink must use an aqueous solvent selected from water, ionized water, hexagonal water, sweet water, hard water or a combination thereof. In particular, solvents of ethers and ketones have high volatility and permeability, and thus are more toxic, so an aqueous ink based on an aqueous solvent must be used. Since the laminated wallpaper according to the present invention is not irritating to the worker, it not only provides flexibility to the working environment during the manufacturing process but also does not emit toxic by post-treatment processes such as heat treatment, coating, and the like. In addition, the content of the ink is preferably 15-20% by weight based on the total composition.

For reference, since the ink used in the present invention contains an aqueous solvent as a main component, it is environmentally friendly because it does not mix with the material and melt even when used in a PVC-based material.

The natural adhesive composition used in the present invention is a starch-based ingredient, and includes one or more selected from the group consisting of corn starch, potato starch, sweet potato starch and tapioca starch, the content is 5-7% by weight based on the total composition.

To the composition according to the present invention, conventional additives such as dispersants and antibacterial agents may be added as necessary. The additive includes 1-2% by weight of dispersant, 1-2% by weight of antimicrobial agent, optionally 0.1-5% by weight of thickener, 1-3% by weight of foaming agent or 1-2% by weight of antifoam, based on the total weight of the composition. can do.

The dispersant plays a role of controlling lubricity and flowability, and it is preferable to use acrylic acid copolymer sodium salt. If the dispersant is used excessively, the dispersing speed is increased, and if it is applied to the woven or nonwoven fabric, the penetration is too high, which causes the deterioration of product quality. If the dispersant is used too small, the dispersing ability is insufficient, making it difficult to manufacture a uniform composition. Lose.

The antimicrobial agent plays a role of preventing mold, and when used in small amounts, its effect cannot be expected, and when used in excess, it is preferable not to use more than an appropriate amount because of unnecessary cost increase as well as change of physical properties.

In addition, the PE composition according to the present invention contains 1-5% by weight of phytoncide extract.

Next, the method of manufacturing the above-described composition for laminated wallpaper and the method of manufacturing the wallpaper to which the same is described will be described in detail.

The wallpaper composition according to the present invention comprises (a) a first mixture containing 55-60% by weight of polyethylene resin, 5-10% by weight of natural ore mixed powder, and 15-20% by weight of aqueous ink at 30-45 ° C. Primary aging for 30 minutes-3 hours with stirring at temperature;

(b) adding the aged mixture 5-10 wt% of the rare earth inorganic material to the aged mixture, followed by secondary aging for 30 minutes to 5 hours with stirring at a temperature of 30-45 ° C .;

(c) removing the precipitate of the second matured second mixture;

(d) subjecting the second mixture, from which the precipitate has been removed, to third aging with stirring at a temperature of 30-45 ° C. for 30 minutes-5 hours;

(e) while maintaining the third matured second mixture at 30-45 ° C., add 5-7% by weight of the natural adhesive composition, and mix the balance water to make the total weight 100% by weight, 60 Stirring for minutes to obtain a third mixture; And

(f) aging the third mixture for 24 hours while maintaining the third mixture at 30 ° C.

Preferably, the step (a) and (b) may further comprise the step of mixing by adding 5-7% by weight of the magnetic nanocomposite material to the aged first mixture.

In addition, preferably, between step (e) and step (f), the method may further include the step of further adding 5-10% by weight of methanol to the third mixture, more preferably with methanol The method may further include adding a phytoncide extract.

Forming a thin film of 100 nm-1 mm by pressing the composition for laminated wallpaper prepared by the above method on the surface of the laminated sheet at 50-80 ° C .; Including the step of aging 24-48 hours at room temperature, the thin film formed can be produced a laminated wallpaper, the schematic diagram is shown in FIG.

The laminated wallpaper prepared as described above may further include a printing layer formed on the thin film of the PE composition for wallpaper. At this time, it is preferable to use the above-mentioned aqueous ink.

In addition, preferably in order to protect the printed layer of the wallpaper, the wallpaper composition prepared through the steps (a) to (f) on the surface of the printed layer further compressed at 50-80 ℃ to a thin film of 100nm-1mm Forming; A surface protective layer may be formed, including the step of aging 24-48 hours at room temperature.

The PE composition, which is a substitute for eco-friendly PVC material according to the present invention, does not emit volatile organic compounds such as formaldehyde, benzene, and toluene, since the solvent is composed of water and an aqueous ink, and the laminated wallpaper using the same is a cement of a building. Adsorption and removal of toxic substances and volatile organic compounds generated from the wall, and also has the effect of generating anions and far infrared rays, which is beneficial to the human body.

In addition, the laminated wallpaper is excellent in breathability, it releases water even when condensation occurs, the PE layer and the laminated layer is excellent in durability because it does not separate, it can effectively prevent the indoor pollution caused by the growth of microorganisms by moisture. have.

1 is a schematic diagram of a laminated wallpaper formed with a thin film of the PE composition for wallpaper according to the present invention.

Production Example 1: Preparation of wallpaper PE composition A-C

57% by weight of a polyethylene resin with a density of 0.91 g / cm ³ , a mixture of zeolite and tourmaline with an average particle diameter of 5 nm in a 1: 1 ratio, 9% by weight, and 20% by weight of an aqueous ink (blue) were mixed and aged at 40 ° C. for 2 hours. Then, 7% by weight of monazite having an average particle diameter of 5 nm was added thereto, stirred at 45 ° C. for 3 hours, and then precipitates were removed and aged for 4 hours while maintaining the temperature. To this, corn starch and cacao starch were mixed at 2: 1, 5% by weight was added, and remaining water was added to adjust the total weight ratio. This was stirred for 60 minutes while maintaining the temperature, and naturally cooled to mature for 24 hours while maintaining 30 ℃ to prepare a PE composition A for wallpaper.

For the wallpaper, the same method as for the above-described method for producing the PE composition A for wallpaper, and adding 6% by weight of ferrous oxide (FeO) and ferric oxide (Fe ₂ O ₃ ) having an average particle diameter of 20 nm together with monite. PE composition B was prepared.

The wallpaper PE composition A was prepared in the same manner as the above-described method of preparing the PE composition A for wallpaper and 5% by weight of methanol and 5% by weight of phytoncide extract when water was added.

The PE composition D for wallpaper was prepared by the same method as the method of preparing the composition B for wallpaper and adding 5 wt% of methanol and 5 wt% of phytoncide extract when water was added.

Preparation Example 2 Preparation of Wallpaper Using PE Composition

Each of the PE compositions A to D for wallpaper prepared in Preparation Example 1 was pressed at 80 ° C. on the surface of the paper to form a 50 nm thin film, and then aged at room temperature for 48 hours to prepare wallpaper A-D, respectively.

[Experimental Example 1: Experiment for Confirming Amount of Hazardous Substances]

In order to confirm the amount of harmful substances generated in the wallpaper, the total amount of volatile organic compounds, toluene and formaldehyde of the prepared wallpaper C was measured according to the 2008-73 indoor air quality test standard. The results are summarized in Table 1. According to Table 1, it can be seen that the wallpaper prepared using the PE composition according to the present invention generates little total volatile organic compounds, toluene and formaldehyde.

-Indoor Air Quality Process Test Standard-

1. Small Chamber Test Conditions

2. Analysis of Total Volatile Organic Compounds

3. Formaldehyde Analysis Conditions

Claims (22)

55-60 wt% low density polyethylene resin (PE) having a density range of 0.91-0.93 g / cm ³ ;
5-10% by weight of a natural ore mixed powder comprising two or more minerals selected from zeolite, tourmaline, elvan, guinea pig, mica, illite, germanium, diatom, and talc;
5-10% by weight of rare earth minerals, including arsenite, or bathnersite, or mixtures thereof;
5-7% by weight of a magnetic nanocomposite material comprising ferrous oxide, or ferric oxide, or a mixture thereof;
15-20% by weight of aqueous ink;
5-7 weight percent of natural adhesive composition; And
PE composition for wallpaper containing water as remainder. The wallpaper PE composition according to claim 1, wherein the wallpaper PE composition further comprises 5-10% by weight of methanol. The wallpaper PE composition of claim 1, wherein the wallpaper PE composition further comprises at least one selected from the group consisting of an antimicrobial agent, an antifungal agent, and a phytoncide extract. According to claim 3, wherein the antimicrobial agent is 1-2% by weight, the antifungal agent is 1-2% by weight, the phytoncide extract is a wallpaper PE composition, characterized in that it comprises 1-5% by weight. The PE composition for wallpaper according to any one of claims 1 to 4, wherein the natural ore mixed powder has an average particle diameter of 5-20 nm, and the rare earth inorganic material has an average particle diameter of 50 nm or less and 1 nm or more. The PE composition for wallpaper according to claim 5, wherein the rare earth inorganic material is an emulsion dispersed in water. The PE composition for wallpaper according to any one of claims 1 to 4, wherein the magnetic nanocomposite material has an average particle diameter of 1-50 nm. The PE composition for wallpaper according to claim 7, wherein the magnetic nanocomposite material is heat-treated at a high temperature of 800-1,000 ° C. in a magnetic field of 1,000-10,000 G.  The PE composition for wallpaper according to any one of claims 1 to 4, wherein the natural adhesive composition is at least one selected from the group consisting of corn starch, potato starch, sweet potato starch and tapio starch. The method of claim 1, wherein the natural ore mixed powder is zeolite; And PE powder for wallpaper, characterized in that the mixture powder of at least one ore selected from the group consisting of tourmaline, elvan, guinea pigs, biotite, illite, germanium, diatoms, and talc. (a) 55-60% by weight of low density polyethylene resin (PE) having a density range of 0.91-0.93 g / cm ³ , zeolite, tourmaline, elvan, precious stones, biotite, illite, germanium, diatoms, and talc 30 minutes-3 hours while stirring the first mixture containing 5-10% by weight of the natural ore mixed powder comprising two or more minerals, and 15-20% by weight of the aqueous ink at a temperature of 30-45 ℃ Tea aging;
(b) adding the aged mixture 5-10% by weight of a rare earth inorganic material to the aged mixture, followed by secondary aging for 30 minutes to 5 hours with stirring at a temperature of 30-45 ° C .;
(c) removing the precipitate of the second matured second mixture;
(d) subjecting the second mixture, from which the precipitate has been removed, to third aging at a temperature of 30-45 ° C. for 30 minutes-5 hours;
(e) while maintaining the third matured second mixture at 30-45 ° C., add 5-7% by weight of the natural adhesive composition, and mix the balance water to make the total weight 100% by weight, 60 Stirring for minutes to obtain a third mixture; And
(f) Method for producing a PE composition for wallpaper comprising the step of aging the fourth mixture for 24 hours while maintaining the third mixture at 30 ℃. 12. The method of claim 11, further comprising the step (a) and (b) step of mixing, by adding 5-7% by weight of the magnetic nanocomposite material to the aged first mixture. Process for preparing PE composition. 12. The method according to claim 11, further comprising adding 5-10% by weight of methanol to the third mixture between the steps (e) and (f). . The method according to claim 12, further comprising adding 5-10% by weight of methanol to the third mixture between the steps (e) and (f). 15. The method according to any one of claims 11 to 14, further comprising the step of preparing the rare earth inorganic material by milling at an average particle diameter of 50 nm or less and 1 nm or more. The method of claim 15, further comprising preparing an emulsion by dispersing the milled rare earth mineral in water to form an emulsion. The method of claim 11, further comprising milling the magnetic nanocomposite material to have an average particle diameter of 1-50 nm. 18. The method of claim 17, further comprising the step of preparing the milled magnetic nanocomposite material by heat treatment at a high temperature of 800-1,000 ° C. in a magnetic field of 1,000-10,000G. The method according to any one of claims 11 to 14, further comprising the step of preparing the natural adhesive composition by mixing at least one selected from the group consisting of corn starch, potato starch, sweet potato starch and tapio starch. Method for producing a PE composition for wallpaper, characterized in that. 15. The method according to any one of claims 11 to 14, wherein the rare earth inorganic material comprises a mobite, or a bath brain site, or a mixture thereof. Preparing a PE composition for wallpaper according to any one of claims 11 to 14; And
The wallpaper PE composition comprises a step of forming a thin film of 100nm-1mm by pressing at 50-80 ℃ on the surface of the paper. 22. The method of claim 21, comprising the step of aging the thin film-formed wallpaper at room temperature for 24-48 hours.

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