KR20010081891A - interior board of polyolefin for building - Google Patents

Abstract

PURPOSE: Provided is a constructional interior material which has strong physical hardness, insulation of heat, waterproofing, air-cleaning, bactericidal, moisture and oder absorbing properties so that it provides pleasant living condition. CONSTITUTION: The composition comprises: 20-100 wt. parts of more than one polyolefin resin selected from ethylenevinylacetate, low density polyethylene, high density polyethylene, polypropylene and linear low density polyethylene with 60-160 deg.C of m.p., 0.90-1.05g/cm¬2 of density, 0.3-25g/10min. of melting index; 3-30wt. parts of foaming agent selected from azodicarbonamide, dinitr-oxo-pentamethyl-tetra-amine, azobisisobutylnitrile and p-toluene- sulfonylhydrazide and 1-70 wt. parts of charcoal powder, 0.2-3wt.% of dicumylperoxide as a cross linking agent, 40-200wt.% of fire retardant such as phosphorous ester and magnesium hydroxide and 0.2-2.0wt.% of anti-oxidant like phenols or aromatic amines.

Description

Interior board of polyolefin for building}

The present invention relates to a polyolefin interior material for building, more specifically, it has excellent adsorptive power and contains charcoal that emits far infrared rays and anions, which are beneficial to human body, and has excellent thermal insulation, waterproofing and soundproofing, sterilization, humidity control, deodorizing effect and air purification. The present invention relates to a polyolefin interior material having excellent effects.

Building interior materials are used to finish or decorate the interior of a building. Depending on the application, the surface material of building materials is laminated by pressing and squeezing a patterned paper on a plate-shaped product by mixing and molding various kinds of synthetic resins such as ethylene vinyl acetate resin or polyurethane resin. It was used as flooring material, ceiling material, and wall material in the room.

However, the interior materials do not play a special role other than merely blocking the rain, cold and heat, sunlight, fire, heat, sound, and efficient distribution of the interior space, the indoor humidity control, deodorizing effect that is essential to create a comfortable living environment And because the air purification effect was not expected, there was a problem that can not increase the comfort of the living space.

The present invention is to solve the above problems, and to provide a building polyolefin interior material that can create a comfortable living environment with excellent physical strength and combines the sterilization effect and the absorption and removal effect of moisture, odors and the like. do.

This object of the present invention is achieved by providing a polyolefin foam containing charcoal that exhibits strong hygroscopicity and bactericidal power by releasing large amounts of anions and far infrared rays, and the building interior material of the present invention has specific gravity, heat insulation, water resistance, tensile strength, elongation. It is not only excellent in tear tear strength, but also it is hygienic and excellent in soundproofing and heat insulation.

The present invention relates to a polyolefin interior material comprising 20 to 100 parts by weight of a polyolefin resin, 3 to 30 parts by weight of a blowing agent, 0.2 to 3.0 parts by weight of a crosslinking agent, and 1 to 70 parts by weight of charcoal powder.

The foaming composition may be used in various mats, such as vehicle interior materials, heating and heating equipment insulation and packaging materials by varying the thickness of the product according to the use, 40 to 200 parts by weight of non-combustibles to prevent the generation of toxic gases in the event of fire By adding 0.2 to 2.0 parts by weight of antioxidant, it can be used as a ceiling material, floor material, wall material and the like.

The polyolefin resin used in the present invention is ethylene vinyl acetate resin (ethylene vinyl acetate, EVA), low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene (PP) and linear low density At least one selected from linear lowdensity polyethylene (LLDPE) is used, and it is preferably configured to have physical properties of melting point of 60 to 160 ° C, density of 0.90 to 1.05g / cm3 and melt index (MI) of 0.3 to 25g / 10min. Do.

The density of the resin is preferably 0.90 to 1.05 g / cm 3, but when the density of the resin is less than 0.90 g / cm 3, the crystallinity is low and mechanical properties are lowered. When the resin density exceeds 1.05 g / cm 3, the flexibility is reduced. Not desirable That is, the physical properties of the resin are good due to the proper degree of crystallinity by having a range of density proposed in the present invention.

In addition, in the present invention, when the melt index (MI) of the resin is less than 0.3 g / 10 min, the fluidity of the resin decreases, so that the work is difficult. When the resin exceeds 25 g / 10 min, the strength, elongation, impact resistance, and abrasion resistance of the obtained molded article are increased. Etc. are lowered and are not preferable.

Therefore, by using the resin having a melt index proposed in the present invention it is possible to improve the moldability of the final product and to obtain a product having excellent surface gloss.

The blowing agent used to foam the polyolefin interior material of the present invention is an azo compound such as azodicarbonamide (ADCA), and a nitroso system such as dinitroxo penta-methyl tetra-amine (DPT). 3 to 30 parts by weight of a compound, azobisisobutyl nitrile (ABBN), p-toluene sulfonyl hydrazid (TSH), and the like, most preferably an azo dicarbon Amide.

At this time, when the content of the crosslinking agent is less than 0.2 parts by weight, the crosslinked gel (gel)% is low, and the foaming is poor. When the content of the crosslinking agent is more than 3 parts by weight, the surface bursts during foam molding and the molding itself becomes difficult.

Examples of the crosslinking method usable in the present invention include a chemical crosslinking method in which an organic peroxide is added to the composition and heated to generate free radicals, and an electron beam crosslinking method in which a polyfunctional compound and a monofunctional monomer are added to the composition and irradiated with an electron beam. .

When performing the chemical crosslinking method among the crosslinking methods, dicumyl peroxide (DCP), t-butylperoxylaurylate, t-dibutylperoxymaleic acid, t-butylhydroperoxide, 2,5-dimethyl-2, Organic peroxides such as 5-di (t-butylperoxy) nucleic acid, di-t-butylperoxide and 1,3-bis (t-butylperoxyisopropylene) benzene are added, most preferably dicumylperoxide ( 0.2-3 weight part of dicumylperoxide (DCP) is added, and when carrying out an electron beam crosslinking method, a crosslinking agent is not added or very small amount can be added.

In addition, in the present invention, charcoal, which is a carbon crystal, is added to inhibit bacterial propagation and to absorb and remove moisture and odors in addition to the physical properties required in the conventional interior materials, and the charcoal prevents oxidation and rot and maintains a fresh state. It is a porous substance that activates anions and cells, promotes physiological activities such as metabolism, releases far infrared rays to remove harmful substances, and exerts strong adsorption.

At this time, if the amount of added charcoal powder is less than 1 part by weight, the effect exerted by adding charcoal is insufficient, and if it exceeds 70 parts by weight, the physical properties such as impact strength, restoring force and tensile strength of the foam decrease due to the addition of excessive charcoal. It is not preferable because of the disadvantage.

In addition, in the present invention, the non-flammable agent added to prevent the generation of toxic gases during fire includes phosphorus-based flame retardants such as phosphate ester and anti-halogen phosphate ester, magnesium hydroxide, carbon, aluminum hydroxide, and the like. The primary antioxidant is a phenolic or aromatic amine is mainly used.

Hereinafter, a method for manufacturing a building interior material using the composition according to the present invention.

First, 20 to 100 parts by weight of a polyolefin resin having a melting point of 60 to 160 ° C, a density of 0.90 to 1.05 g / cm 3, and a melt index of 0.3 to 25 g / 10 min, 3 to 30 parts by weight of a blowing agent, and 40 to 200 parts by weight of a nontoxic nonflammable agent, 0.2 to 2.0 parts by weight of antioxidant and 1 to 70 parts by weight of charcoal powder are blended in a molten state at a temperature below the decomposition temperature of the blowing agent and the crosslinking agent using a mixer, and then the blended composition is formed into a foamable solid sheet using a special extruder. After molding, the solid sheet was irradiated with an electron beam at an absorbed dose of 2 to 10 Mrad, or 0.2 to 3 parts by weight of a crosslinking agent was mixed at the time of manufacturing the solid sheet, and the solid sheet was molded by a special extruder and foamed in a foam oven to form a thickness of 1 to 12 mm. And a non-toxic non-combustible interior material having an apparent density of 0.02 to 0.500 g / cm 3 and anionic emissivity of 150 ION / ㏄ or more.

At this time, preferable extrusion temperature is 90-150 degreeC, and foaming temperature is 190-280 degreeC.

On the other hand, using the composition according to the present invention does not add a non-flammable and antioxidant when manufacturing a vehicle interior, cold and heating insulation and packaging materials, the method is as follows.

First, 20 to 90 parts by weight of polyolefin resin, 3 to 30 parts by weight of blowing agent, 1.0 to 70 parts by weight of charcoal powder having a melting point of 80 to 160 ° C., a density of 0.90 to 0.98 g / cm 3, and a melt index of 0.3 to 15 g / 10 min. After the decomposition temperature of the crosslinking agent is blended in a molten state using a mixer, the blended composition is molded into a foamable solid sheet using a special extruder, and the solid sheet is irradiated with an electron beam at an absorbed dose of 2 to 8 Mrad. Or by mixing 0.2 to 2 parts by weight of the crosslinking agent in the manufacture of the solid sheet and foaming in a special foam oven to obtain a foam having a thickness of 0.5 to 30 mm, an apparent density of 0.015 to 0.500 g / cm 3, and an anionic emissivity of 150 to 300 ION / ㏄, The foam produced as described above may be used as various kinds of mats by varying the thickness of the product according to the use.

At this time, preferable extrusion temperature is 90-150 degreeC, and foaming temperature is 190-260 degreeC.

Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to the described embodiments.

Example 1

40 parts by weight of ethylene vinyl acetate resin (EVA), 25 parts by weight of low density polyethylene (LDPE), 12 parts by weight of blowing agent azodicarbonamide, 1.2 parts by weight of crosslinker dicumyl peroxide, 80 parts by weight of flame retardant, 1.0 part by weight of antioxidant, charcoal 10 parts by weight of a chemical crosslinking method was formed into a solid sheet in an extruder at a temperature of 90 to 150 ° C., and then foamed at a foam temperature of 190 to 280 ° C. using a special foaming oven to form a ceiling having a thickness of 3 to 25 mm. Ash was prepared.

Example 2

60 parts by weight of ethylene vinyl acetate resin (EVA), 10 parts by weight of linear low density polyetherene (LLDPE), 9 parts by weight of blowing agent azodicarbonamide, 0.8 parts by weight of crosslinker dicumyl peroxide, 100 parts by weight of flame retardant, 0.8 parts by weight of antioxidant 20 parts by weight of parts and charcoal powder are subjected to chemical crosslinking to form a solid sheet in an extruder at a temperature of 90 to 150 ° C., and then foamed to a foam temperature of 190 to 280 ° C. using a special foam oven to be 2.5 to 3 thick. MM building insulation interior material was produced.

Example 3

50 parts by weight of ethylene vinyl acetate resin (EVA), 20 parts by weight of low density polyethylene (LDPE), 10 parts by weight of linear low density polyethylene (LLDPE), 20 parts by weight of blowing agent azodicarbonamide, 115 parts by weight of flame retardant, 1.2 parts by weight of antioxidant And 15 parts by weight of charcoal powder were irradiated with an electron beam of 2 to 10 Mrad on a solid sheet formed by an extruder at 90 to 150 ° C., and then foamed in a special foam oven (foaming temperature 180 to 240 ° C.) to a thickness of 0.1 to 10 ㎜ wall material was prepared.

Example 4

45 parts by weight of ethylene vinyl acetate resin (EVA), 25 parts by weight of low density polyethylene (LDPE), 10 parts by weight of blowing agent azodicarbonamide, 0.7 parts by weight of crosslinking agent dicumyl peroxide and 10 parts by weight of charcoal powder were subjected to chemical crosslinking. After molding into a solid sheet in an extruder at 150 ℃ temperature using a special foam oven to foam at a foaming temperature of 190 ~ 260 ℃ to prepare an air conditioner packaging material of 3 ~ 8 mm thick.

Comparative Example 1

100 parts by weight of ethylene vinyl acetate (EVA), 9 parts by weight of azodicarbonamide, 0.8 parts by weight of dicumyl peroxide, 20 parts by weight of flame retardant, and 1 part by weight of an antioxidant are subjected to chemical crosslinking and a special extruder having a temperature of 90 to 110 ° C. After molding into a solid sheet in the foam was prepared by expanding the solid sheet at a foaming temperature of 200 ~ 260 ℃.

The physical properties of the foams prepared in Examples 1 to 4 and Comparative Example 1 were measured and shown in Table 1.

Compounding ratio (part by weight) Example 1 Example 2 Example 3 Example 4 Comparative example E V A 40 60 50 45 100 L D P E 25 - 20 25 - L L D P E - 10 10 - - Foaming agent (azodicarbonamide) 12 9 20 10 9 Crosslinking Agent (Dicumyl Peroxide) 1.2 0.8 - 0.7 0.8 Flame retardant 80 100 115 - 20 Antioxidant 1.0 0.8 1.2 - One Charcoal powder 10 20 15 10 - Electron Beam Dose (Mrad) - - 2 to 10 - - Properties Specific gravity (g / cm 3) 0.046 0.092 0.031 0.051 0.077 Hardness (ShoreC) 28 46 20 34 34 Tensile Strength (㎏ / ㎠) 4.7 8.5 3.0 5.9 5.0 Elongation (%) 160 175 150 165 140 Rupture Tear Strength (㎏ / ㎝) 2.8 6.0 1.7 4.3 3.4 Permanent compression rate (%) 65 58 80 60 84 Deodorization effect (%) 60 80 85 75 20 Foam magnification (times) 20 10 30 15 12

As compared with Comparative Example 1, the polyolefin interior materials of the present invention are not only excellent in specific gravity, hardness, tensile strength, elongation, tear tear strength, and permanent compression ratio, which are important physical properties as interior materials, but also in the human body. It releases far-infrared rays that stimulate physiological action by activating vital anions and cells, and is manufactured in an optimal state to maximize the efficacy of charcoal with strong adsorption ability, so it can be used for rain, cold, heat, sunlight, fire, heat, It not only has excellent sound blocking effect, but also suppresses the growth of bacteria in buildings and absorbs and removes moisture and odors.

In addition, the present invention provides an interior and packaging material having excellent antibacterial effect, excellent humidity control and odor removal effect when used as a vehicle interior material, soundproofing material, heating and heating equipment insulation and packaging materials.

Claims (6)

20 to 100 parts by weight of a polyolefin resin having a melting point of 60 to 160 ° C., a density of 0.90 to 1.05 g / cm 3 and a melt index of 0.3 to 25 g / 10 min, a mixture of 3 to 30 parts by weight of a blowing agent, and 1 to 70 parts by weight of charcoal powder Polyolefin interior material. The polyolefin interior material of Claim 1 comprised by 0.2-3 weight part of crosslinking agents further mixing. The polyolefin interior material according to claim 1 or 2, further comprising 40 to 200 parts by weight of a nonflammable agent and 0.2 to 2.0 parts by weight of an antioxidant. The method of claim 1 or 2, wherein the polyolefin resin is ethylene vinyl acetate resin (ethylene vinyl acetate, EVA), low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene (polypropylene) , PP) and linear low density polyethylene (LLDPE). The method of claim 1, wherein the blowing agent is azodicarbonamide (ADCA), dinitroxo penta-methyl tetra-amine (DPT), azobisisobutyl nitrile (azobisiso-butyl nitrile, ABBN ), and p-toluene sulfonyl hydrazid (TSH), a polyolefin interior material, characterized in that one selected from the group consisting of. The polyolefin interior material according to claim 2, wherein the crosslinking agent is dicumylperoxide (DCP).