WO2017026716A1 - 폴리에스테르 발포체와 폴리에스테르 수지층을 포함하는 다층 구조의 복합체 및 이의 용도 - Google Patents
폴리에스테르 발포체와 폴리에스테르 수지층을 포함하는 다층 구조의 복합체 및 이의 용도 Download PDFInfo
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- WO2017026716A1 WO2017026716A1 PCT/KR2016/008388 KR2016008388W WO2017026716A1 WO 2017026716 A1 WO2017026716 A1 WO 2017026716A1 KR 2016008388 W KR2016008388 W KR 2016008388W WO 2017026716 A1 WO2017026716 A1 WO 2017026716A1
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- WO
- WIPO (PCT)
- Prior art keywords
- polyester
- composite
- polyester composite
- resin layer
- foam
- Prior art date
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Definitions
- the present invention relates to a composite of a multilayer structure comprising a polyester foam and a polyester resin layer and its use.
- Plastic foamed molded articles have been widely used throughout the industry due to advantageous properties such as light weight, cushioning, heat insulation, moldability, energy saving.
- Polymers such as polystyrene, polyolefin or polyvinyl chloride are amorphous and have high melt viscosity and low viscosity change due to temperature change, and are easy to foam, and are widely used as insulation materials, structural materials, buffer materials, and packaging containers. have.
- the above polymers have the disadvantage of being vulnerable to fire, releasing environmental hormones and having low physical properties.
- polyester is an environmentally friendly material, and has excellent mechanical properties, excellent heat resistance, chemical resistance, and the like, and thus can be applied to various fields requiring light weight and high physical properties.
- polyester has difficulty in molding by extrusion foaming as a crystalline resin.
- polyester has difficulty in molding by extrusion foaming as a crystalline resin.
- US Patent No. 5000991 discloses a technique for producing a foamed molded article by adding a crosslinking agent to polyester and extruding the same.
- the present invention relates to a composite having a multi-layered structure including a polyester foam and a polyester resin layer and its use, and to improve the working environment, to provide a durable and improved strength and light weight composite.
- the present invention as a means for solving the above problems
- n-layer (n is an integer of 2 or more) polyester foam is laminated
- polyester composite comprising a polyester resin layer formed on one side or both sides of each layer of the polyester foam.
- the present invention can provide a vehicle interior and exterior materials comprising the polyester composite.
- the present invention can provide a building insulation comprising the polyester composite.
- the polyester composite according to the present invention is capable of improving the working environment, providing durability and strength and providing a lighter weight composite, is easy to reuse, and can be variously used for various purposes such as automobile interior and exterior materials or building insulation materials.
- 1 and 2 are cross-sectional views of the polyester composite of the present invention, respectively, according to one embodiment.
- the terms "comprises” or “having” are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.
- cell means a microstructure expanded by foaming in a polymer.
- the present invention relates to a composite in which a polyester foam and a polyester resin layer are combined.
- the polyester foam may be in the form of a foam foamed in the form of a sheet or board
- the polyester resin layer may be a non-foamed layer, it is possible to apply a biaxially stretched film formed in the form of a film.
- the present invention relates to a polyester composite comprising a functional coating layer and its use, as an example of the polyester composite,
- n-layer (n is an integer of 2 or more) polyester foam is laminated
- polyester composite comprising a polyester resin layer formed on one side or both sides of each layer of the polyester foam.
- n may be variously prepared in 2 to 50, 2 to 40, 2 to 30, 2 to 20, 2 to 10 or 2 to 5 layers.
- the polyester composite may include a polyester foam and a polyester resin layer, thereby easily recycling and providing a composite to which various functionalities are provided.
- the composite according to the present invention by forming a polyester resin layer on the outer surface of the formed polyester composite, it is possible to effectively provide the desired functionality without lowering the physical properties of the foam, it is possible to increase the process efficiency and freedom.
- the composite according to the present invention has a flexural modulus (expressed in flexural modulus, or stiffness) measured when the support span (Span) of the specimen is fixed to 100 mm and the flexural load is applied at a rate of 5 mm / min according to ASTM D 790. 400 MPa or more.
- the inventors of the present invention confirmed that the excellent flexural modulus can be realized by laminating the polyester foam and the polyester resin layer.
- the flexural modulus of the composite is 400 MPa or more, 450 Mpa or more, 500 to 30,000 Mpa, 550 to 25,000 Mpa, 600 to 20,000 Mpa, 650 to 10,000 Mpa, 700 to 5,000 Mpa, 750 to 4,000 Mpa, 800 to 3,000 Mpa or 860 to 1,000 Mpa.
- the composite according to the present invention by controlling the flexural modulus in the above range, it is possible to secure excellent rigidity and to prevent deformation to physical impact or force.
- the polyester composite according to the present invention may have a flexural strength of 20 N / cm 2 or more measured according to ASTM D 790.
- the flexural strength may be evaluated according to ASTM D 790, and may be, for example, a value measured while fixing a support spacing (Span) of the specimen at 100 mm and applying a flexural load at a rate of 5 mm / min.
- the bending strength may be in the range of 22 to 250 N / cm 2 , 25 to 210 N / cm 2 , 30 to 200 N / cm 2 , or 50 to 180 N / cm 2 .
- the composite according to the present invention can realize excellent flexural modulus while satisfying the flexural strength of the above range even though the thickness is not thick.
- the polyester composite according to the present invention may satisfy the following condition 1.
- the condition 1 means the rate of change of the dimension (horizontal, vertical, height average) before and after irradiated with light having a wavelength of 255 W / m 2 for 90 days in accordance with the accelerated light resistance test of KS R 0021.
- Lt 0 represents the dimension before the treatment
- Lt 1 represents the dimension after the treatment.
- the dimensional change rate may be specifically less than 1%, 0.01 to 0.9%, 0.05 to 0.8%, or 0.1 to 0.6%.
- the dimensional change rate may be a dimensional change rate when the volume Tt 0 before treatment (before irradiating light) is 1 m 3 .
- the thermal conductivity of the polyester composite according to the present invention may be 0.04 W / mK or less.
- the thermal conductivity of the composite may range from 0.01 to 0.04 W / mK, 0.01 to 0.035 W / mK, or 0.02 to 0.035 W / mK.
- Compression strength (KS M ISO 844) of the polyester foam may be 20 to 300 N / cm 2 .
- the compressive strength of the foam ranges from 20 to 250 N / cm 2 , 30 to 150 N / cm 2 , 40 to 75 N / cm 2 , 45 to 75 N / cm 2 or 55 to 70 N / cm 2 Can be.
- bead foaming a method of manufacturing a foamed molded product by inserting a bead-shaped resin into a mold and foaming, wherein the bead foamed molded product is relatively cracked and granular fracture phenomenon between the beads and beads during the compression test. It happens easily.
- the foam according to an example of the present invention can be produced by extrusion foaming, it is possible to achieve a remarkably excellent compressive strength.
- the sound absorption rate measured according to KS F 2805 may be 0.4 NRC or more, and the transmission loss value measured according to KS F 2080 may be 10 dB or more.
- the sound absorption rate may range from 0.4 to 1 NRC or 0.4 to 0.6 NRC
- the sound insulation rate may range from 10 to 30 dB or from 15 to 25 dB.
- the polyester composite according to the present invention can be simultaneously implemented at an excellent level of sound absorption and sound insulation, it is possible to effectively sound-absorbed to sound in and out of the vehicle.
- the flame resistance may be at least tertiary based on KS F ISO 5660-1.
- Class 3 is flame retardant material, Class 2 semi-combustible material and Class 1 non-flammable material, Class 3 or more based on KS F ISO 5660-1, that is, 1
- the flame retardant to non-flammable properties can be reduced, thereby reducing the risk of fire.
- the composite according to the invention is characterized in that it does not contain glass fibers.
- a sheet formed by mixing polyurethane (PU) and glass fiber (Glass Fiber) is used as a method for improving durability and strength, or molded by mixing polypropylene (PP) and glass fiber (Glass Fiber).
- PP polypropylene
- Glass Fiber Low weight reinforced thermoplastics (LWRT), a sheet-like material, are mainly used.
- the composite according to the present invention does not contain glass fibers, it is possible to reduce the weight and prevent the generation of glass dust generated during the processing. Furthermore, the composite according to the present invention provides a composite excellent in rigidity, strength and durability. In the present invention, it does not include the glass fiber, for example, the content of the glass fiber relative to the total composite weight, 1 wt% or less, 0.01 wt% or less, 1 to 0.001 wt%, or 0.01 to 0.001 wt% It means that it does not contain glass fiber specifically.
- the polyester resin layer may have a form in which one or more of a heat insulating agent, a flame retardant, a VOC reducing agent, a hydrophilizing agent, a waterproofing agent, an antibacterial agent, a deodorant, and a sunscreen agent is dispersed in the resin layer. Through this, it is possible to impart various functionalities to the complex.
- the heat insulating agent may include a carbonaceous component.
- the heat insulating agent may include graphite, carbon black, graphene, and the like, and specifically, may be graphite.
- the flame retardant is not particularly limited, and may include, for example, bromine compounds, phosphorus compounds, antimony compounds, metal hydroxides, and the like.
- the bromine compound includes, for example, tetrabromo bisphenol A and / or decabromodiphenyl ether.
- the phosphorus compound may include aromatic phosphate esters, aromatic condensed phosphate esters, halogenated phosphate esters, and / or red phosphorus compounds
- the antimony compound may include antimony trioxide, antimony pentoxide, and the like.
- examples of the metal element in the metal hydroxide include aluminum (Al), magnesium (Mg), calcium (Ca), nickel (Ni), cobalt (Co), tin (Sn), zinc (Zn), and copper (Cu ), Iron (Fe), titanium (Ti) and boron (B) may include one or more.
- the metal hydroxide of aluminum or magnesium can be used.
- the metal hydroxide may be composed of one metal element or two or more metal elements.
- the metal hydroxide may include at least one of aluminum hydroxide and magnesium hydroxide.
- the VOC reducing agent may include Graf and / or Bactoster Alexin.
- Bacterial Alexin is characterized in that the natural sterilized material extracted from propolis.
- the hydrophilic agent is not particularly limited, and anionic surfactants (eg, fatty acid salts, alkyl sulfate ester salts, alkylbenzene sulfonates, alkyl naphthalene sulfonates, alkyl sulfosuccinate salts, polyoxyethylene alkyl sulfate ester salts, and the like)
- Nonionic surfactants e.g., polyoxyalkylene alkyl ethers such as polyoxyethylene alkyl ethers, polyoxyethylene derivatives, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, Glycerin fatty acid esters, polyoxyethylene alkylamines, alkylalkanolamides, etc.
- cationic and zwitterionic surfactants e.g., alkylamine salts, quaternary ammonium salts, alkylbe
- the type of the waterproofing agent is not particularly limited, and for example, silicone type, epoxy type, cyanoacrylic acid type, polyvinyl acrylate type, ethylene vinyl acetate type, acrylate type, polychloroprene type, polyurethane resin And a blend series of a polyester resin and a polyester series, a blend series of a polyol and a polyuretene resin, a blend series of an acrylic polymer and a polyurethane resin, a polyimide series, and a blend series of a cyanoacrylate and a urethane. .
- the type of the antimicrobial agent is, for example, a complex in which at least one metal of silver, zinc, copper, and iron is added to at least one carrier of hydroxyapatite, alumina, silica, titania, zeolite, zirconium phosphate, and aluminum polyphosphate. It may include.
- the deodorant may be a porous material. Porous material has a strong property to physically adsorb the fluid flowing around it, it is possible to adsorb volatile organic compounds (VOC).
- the deodorant is, for example, silica, zeolite and calcium (Ca), sodium (Na), aluminum (Al), silver (Ag), copper (Cu), tin (Zn), iron (Fe), cobalt (Co ) And nickel (Ni) may include any one or a mixture of two or more thereof.
- the particle size of the deodorant may be 1 to 20 ⁇ m, for example, 1 to 10 ⁇ m or less.
- the pinhole is generated on the surface of the foam to reduce the quality of the product, if the numerical range is satisfied, due to the increase in specific surface area of the adsorption of harmful substances This increases.
- the sunscreen is not particularly limited, and may be, for example, an organic or inorganic UV-blocking agent.
- organic UV-blocking agent include p-aminobenzoic acid derivatives, benzylidene camphor derivatives, cinnamic acid derivatives, benzophenone derivatives, Benzotriazole derivatives and mixtures thereof
- inorganic-based UV-blocking agent may include titanium dioxide, zinc oxide, manganese oxide, zirconium dioxide, cerium dioxide, or mixtures thereof.
- the component forming the functional coating layer may include an inorganic material and / or an organic material.
- the inorganic material may include at least one of graphite, carbon black, aluminum, zeolite, and silver.
- a resin foam layer is formed by the extrusion foaming method, Since at least one surface of the functional coating layer is formed separately, there is no restriction on the boiling point of the organic material to be used.
- the polyester resin layer may include a repeating unit represented by Formulas 1 and 2 below, and may include a polyester resin having a melting point of 180 ° C. to 250 ° C. or a softening point of 100 ° C. to 130 ° C.
- n and n represent the mole fraction of repeating units contained in the low melting polyester resin
- the polyester resin layer may be a copolyester resin having a structure containing a repeating unit represented by the formula (1) and (2).
- the repeating unit represented by Chemical Formula 1 represents a repeating unit of polyethylene terephthalate (PET), and the repeating unit represented by Chemical Formula 2 improves the tearing property of a polyester resin including a polyethylene terephthalate (PET) repeating unit. Perform the function.
- the repeating unit represented by Chemical Formula 2 includes a methyl group (-CH 3 ) as a side chain in the ethylene chain bonded to terephthalate to increase the degree of freedom of the main chain by securing a space for the main chain of the polymerized resin to rotate.
- the softening point (Ts) and / or the glass transition temperature (Tg) may be adjusted by inducing a decrease in crystallinity of the resin. This may have the same effect as in the case of using isophthalic acid (IPA) containing an asymmetric aromatic ring in order to lower the crystallinity of the conventional crystalline polyester resin.
- IPA isophthalic acid
- the copolyester resin may include 0.5 to 1 repeating units represented by Formulas 1 and 2, specifically, 0.55 to 1; 0.6 to 1; 0.7 to 1; 0.8 to 1; 0.5 to 0.9; 0.5 to 0.85; 0.5 to 0.7; Or 0.6 to 0.95.
- the softening point of the copolyester may be 110 °C to 130 °C, specifically 110 °C to 120 °C; 115 ° C. to 125 ° C .; 118 ° C to 128 ° C; 120 ° C. to 125 ° C .; 121 ° C. and 124 ° C .; 124 ° C to 128 ° C or 119 ° C to 126 ° C.
- the copolyester resin may have a glass transition temperature (Tg) of 50 ° C or higher.
- Tg glass transition temperature
- the glass transition temperature may be 50 °C to 80 °C, more specifically 50 °C to 60 °C, 60 °C to 70 °C, 70 °C to 80 °C, 50 °C to 55 °C, 55 °C to 60 °C, 60 °C to 65 °C, 65 °C to 70 °C, 68 °C to 75 °C, 54 °C to 58 °C, 58 °C to 68 °C, 59 °C to 63 °C, or 55 °C to 70 °C.
- the copolyester resin may have an intrinsic viscosity (I.V) of 0.5 dl / g to 0.8 dl / g.
- the intrinsic viscosity (I.V) is 0.5 dl / g to 0.65 dl / g; 0.6 dl / g to 0.65 dl / g; 0.65 dl / g to 0.70 dl / g; 0.64 dl / g to 0.69 dl / g; 0.65 dl / g to 0.68 dl / g; 0.67 dl / g to 0.75 dl / g; 0.69 dl / g to 0.72 dl / g; 0.7 dl / g to 0.75 dl / g; 0.63 dl / g to 0.67 dl / g; 0.6 dl / g to 0.75 dl / g
- Copolymerized polyester resin according to the present invention can control the softening point (Ts), and / or glass transition temperature (Tg) of the polyester resin in the above range, including the repeating unit represented by the formula (2) can be properly utilized in various fields There is this.
- the fiber comprising the copolyester resin according to the present invention may have excellent heat adhesion.
- the adhesiveness at room temperature and high temperature according to ASTM D1424 is evaluated for a fabric (cm X cm X cm) including the copolyester resin fiber at an average density of 2g / cm 2 to 60kgf to 25 ⁇ 0.5 °C It is 80kgf, it can exhibit a good adhesion of 3.5kgf to 4.5kgf at 100 ⁇ 0.5 °C.
- the fabric is 55kgf to 75kgf at 25 ⁇ 0.5 °C; 55 kgf to 60 kgf; 60 kgf to 65 kgf; 62 kgf to 68 kgf; May have an adhesion of 69 kgf to 73 kgf or 64 kgf to 72 kgf, and 3.5 kgf to 3.8 kgf at 100 ⁇ 0.5 ° C .; 3.5 kgf to 4.2 kgf; 4.0 kgf to 4.3 kgf; 3.8 kgf to 4.5 kgf; Or 3.8 kgf to 4.2 kgf.
- polyester resin layer may further include a repeating unit represented by the following Formula 3 together with the repeating units represented by Formula 1 and Formula 2:
- X is a 2-methylpropylene group or an oxydiethylene group
- r is a mole fraction of the repeating unit contained in co-polyester resin, and is 0.4 or less.
- r may be 0.3 or less, 0.25 or less, 0.2 or less, 0.15 or less, or 0.1 or less.
- the present invention is produced during the copolymerization while extending the range of adjusting the softening point (Ts), glass transition temperature (Tg) and the like of the polyester resin by adjusting the repeating unit represented by the formula (3) contained in the polyester resin layer in the fraction range
- the content of cyclic compounds of degree of polymerization 2 to 3 derived from dispersions such as isophthalic acid (IPA) can be significantly reduced.
- the resin layer according to the present invention may be included in the content of the cyclic compound of the polymerization degree 2 to 3 significantly reduced to 1% by weight based on the total resin weight, specifically based on the total resin weight It may include 0.5 wt% or less, 0.4 wt% or less, 0.3 wt% or less, or 0.2 wt% or less, or may not include the cyclic compound.
- Polyester foams having an average thickness in the range of 1 to 5 mm;
- It may comprise any one or more of polyester foams having an average thickness in the range of 10 to 100 mm.
- the thickness of the polyester foam according to the invention may range from 1 to 5 mm on average.
- the thickness of the foam may range from 1.3 to 5 mm, 1.5 to 4.8 mm, 2 to 4.6 mm, 2.4 to 4.4 mm, 2.8 to 4.2 mm, 3 to 4.1 mm or 3.5 to 4 mm.
- the average thickness of the foam according to the present invention is in the above range, it is possible to prevent the reduction in strength and rigidity while at the same time realizing the weight of the composite.
- the thickness of the polyester foam according to the present invention may range from 15 to 100 nm, 15 to 80 nm, 15 to 70 nm, 20 to 65 nm, 25 to 60 nm, 30 to 50 nm or 30 to 45 nm on average. have.
- the average thickness of the foam according to the present invention is in the above range, by increasing the composite flexural modulus, it is possible to implement improved stiffness.
- the polyester composite according to the present invention may include one or more layers each of the polyester foam having the thickness in the range of 1 to 5 mm and the polyester foam having the thickness in the range of 10 to 100 mm.
- the basis weight of the polyester resin layer according to the present invention may range from 300 to 3,000 g / m 2 on average.
- the basis weight of the resin layer can be controlled in the range of 1,000 g / m 2 or less and 500 to 800 g / m 2 . If the basis weight of the resin layer increases excessively, it causes a weight increase.
- the polyester resin mainly used until now is a high molecular weight aromatic polyester resin produced by terephthalic acid and 1,4-butanediol condensation polymerization.
- the high molecular weight polyester may mean a polymer having an intrinsic viscosity [ ⁇ ] of 0.8 (dL / g) or more.
- the aromatic polyester resin has excellent physical properties such as high molecular weight, thermal stability, tensile strength, etc., but does not decompose in the natural ecosystem after disposal, causing serious environmental pollution problems.
- PET polyethylene terephthalate
- PBT polybutylene terephthalate
- PLA polylactic acid
- PGA polyglyco Polyglycolic acid
- PP Polypropylene
- Polyethylene Polyethylene
- PE Polyethylene adipate
- PHA Polyhydroxyalkanoate
- PTT Polytrimethylene terephthalate
- PTT Polytrimethylene Terephthalate
- polyester terephthalate polyethylene terephthalate, PET
- PET polyethylene terephthalate
- the polyester foam according to the present invention is a polyethylene terephthalate (PET) foam
- the polyester resin layer may be a polyethylene terephthalate resin layer.
- PET polyethylene terephthalate
- the polyester composite according to the present invention is made of both the foam and the resin layer, it can be reused by dissolving at a time without having to separate each layer at the time of reuse, to simplify the manufacturing process and simplify the recycling process Can be.
- the polyester foam according to the invention at least 90% of the cells are closed cells (DIN ISO4590), which means that the measured value according to DIN ISO4590 of the polyester foam is at least 90% (v / v) of the cells are closed cells.
- DIN ISO4590 closed cells
- the proportion of closed cells in the polyester foam may be on average 90 to 100% or 95 to 99%.
- Polyester foam according to the present invention by having a closed cell within the above range, it can realize excellent durability, rigidity and strength properties when produced in the polyester composite.
- the number of cells in the polyester foam is 1 mm 2 It may comprise 1 to 30 cells, 3 to 25 cells, or 3 to 20 cells per.
- the average size of the cell may range from 100 to 800 ⁇ m.
- the average size of the cell may range from 100 to 700 ⁇ m, 200 to 600 ⁇ m or 300 to 600 ⁇ m.
- the cell size deviation may be, for example, 5% or less, 0.1 to 5%, 0.1 to 4% to 0.1 to 3% range.
- the polyester foam according to the present invention may be an extruded foam molded article.
- the type of foaming method includes bead foaming or extrusion foaming.
- the bead foaming is a method in which a resin bead is first foamed and aged for a suitable time, and then filled into a plate-shaped or cylindrical mold and heated again to be fused and molded by secondary foaming to make a product.
- Extrusion foam on the other hand, by heating and melting the resin and continuously extruding and foaming the resin melt, can simplify the processing steps, enable mass production, and crack and granular fracture between beads during bead foaming. By preventing the phenomenon, it is possible to implement more excellent flexural strength and compressive strength.
- the shape, thickness and lamination structure of the fiber layer are not particularly limited, but, for example, the fiber layer is in the form of a partial fusion between the polyester resin fibers forming the fiber layer.
- the partially fused form between the fibers is a result of forming the resin fiber layer and performing the molding while applying heat and / or pressure to the formed fiber layer. Therefore, the shape of the fiber layer may be a randomly partially fused, partially separated form.
- the polyester fiber layer is formed of an aggregate of a release cross-section hollow fiber, the release cross-section hollow fiber, based on the cross-sectional shape, consisting of a hollow portion, a shape maintaining portion and a volume control unit, the volume control unit May be protruded in the direction opposite to the fiber center, the distal end of the protruding shape may be made in a round shape.
- the volume control portion may be in the form of protruding in the opposite direction of the fiber center, more specifically, the end portion of the protruding form may be in the form of a round shape.
- the cross-sectional structure of the release cross-section hollow fiber is described by dividing into a hollow portion, a shape maintaining portion and a volume control portion, but this is for convenience of description.
- the cross-sectional structure of the release cross-section hollow fiber there is a hollow portion to form a hole in the longitudinal direction of the fiber therein, and includes a shape maintaining portion surrounding the hollow portion.
- the shape maintaining part is formed on the outer peripheral surface on the opposite side of the hollow on the basis of the cross-section, the protruding portion of the unevenness is referred to as the volume control portion.
- the release cross-section hollow fiber, polyester resin may be used, for example, polyethylene terephthalate (polyethylene terephthalate, PET) may be used.
- the melt viscosity of the melt-spun PET polymer may be in the range of 0.60 to 0.64, and is suitable for the in-out spinneret to maximize the cooling effect.
- the thickness of the fiber may be variously applied in the range of 4 to 15 denier, and the fiber length may be 22 to 64 mm.
- the hollow ratio of the hollow portion may range from about 15 to 30% in the total fiber area. If it exceeds the above range may be a problem in the fiber formability, if it is less than the above range may have a limit in expressing the heavy co-oil and various functionalities of the present invention.
- the shape maintaining part means a fibrous shape between the hollow part and the volume control part.
- the volume control part may protrude in a direction opposite to the center of the fiber, and the distal end part may have a round shape.
- the top of the distal end may be defined as a peak, and the volume control may be defined as a valley.
- the radius of curvature of the peak may be defined as R
- the radius of curvature of the valley may be defined as r, and different and equal R and r values may be determined for each volume control unit.
- the present invention may include any one or more of a polyester foam, a polyester resin layer and a polyester fiber layer in a plurality of layers, which may be a structure thermally fused or heat bonded to each other without an adhesive material have.
- the polyester composite according to the present invention may be a structure bonded through an adhesive material between each layer.
- the polyester composite according to the present invention is a polyester-based formed at any one or more positions between the polyester foam and the polyester resin layer, between the polyester foam and the polyester fiber layer and between the polyester resin layer and the polyester fiber layer It may further include an adhesive resin layer.
- the polyester-based adhesive resin layer may be a polyester-based elastic adhesive resin that is a polycondensation product of a hard segment, which is an esterification reaction of diol and dicarbonic acid, and a soft segment, which is a polyol. Through this, it is possible to increase the interlayer adhesion, to prevent the peeling, and further has the advantage of easy recycling.
- the present invention can provide a variety of uses, including the polyester composite described above. Specifically, the polyester composite according to the present invention can be applied to various fields such as building industry, automobile industry and household goods industry.
- the polyester composite according to the present invention can be used as interior and exterior materials for cars and / or thermal insulation for construction.
- the polyester composite according to the invention as a vehicle interior and exterior materials, it is possible to implement characteristics such as excellent light weight, cushioning, heat insulation, moldability, high strength and energy saving.
- PET resin 100 parts by weight was first dried at 130 ° C. to remove water, 1 part by weight of PET resin, 1 part by weight of pyromellitic dianhydride (PMDA), 1 part by weight of talc (talc), from which the water was removed in a first extruder, 0.1 parts by weight of Irganox (IRG 1010) was mixed and heated to 280 ° C. to prepare a resin melt. Then, after mixing the carbon dioxide gas as the blowing agent in the first extruder, the resin melt was sent to the second extruder and cooled to 220 ° C. The cooled resin melt was extrusion foamed through a die to produce a polyester foam.
- PMDA pyromellitic dianhydride
- talc talc
- Irganox Irganox
- n an integer of 2 or more
- FIG. 1 a case in which a polyester foam is formed in a two-layer structure is disclosed, and the polyester resin layers 20, 21, 22 are formed at the interface of the polyester foams 10, 11.
- a cross sectional view of the thermally fused polyester composite can be seen.
- FIG. 2 a case in which a polyester foam is formed in a four-layer structure is disclosed, and the polyester resin layers 23, 24, and 25 are formed at the interface of the polyester foams 12, 13, 14, and 15. , 26, 27) can be seen a cross-sectional view of the polyester composite heat-sealed.
- a polyester composite was prepared by mixing 0.2 parts by weight of graphite based on 100 parts by weight of the resin.
- a polyester composite was prepared by forming a PET fiber layer on both sides of the polyester composite prepared in Example 1.
- a polyester foam was prepared in the same manner as in Example 1 except that the polyester foam was not formed and the polyester foam was formed in a single layer.
- GMT glass fiber mat thermoplastic
- Example 1 For the polyester foam prepared in Example 1, the variation in cell size and cell size was measured. Specifically, the cell size was measured by SEM photographing the foam, and the deviation of the cell size within 2 mm in width and 2 mm in length was measured. The results are shown in Table 1 below.
- the cell size of the polyester foam according to the present invention is 300 ⁇ m level, the cell size deviation is 5% or less, it can be confirmed that the foam is very uniform.
- Example 1 In order to evaluate the physical properties of Example 1 and Comparative Examples 1 to 3, the flexural modulus and the flexural strength were measured.
- the flexural modulus and the flexural strength were measured according to ASTM D 790, but the value at the time of applying a flexural load at a rate of 5 mm / min was fixed at a support interval (Span) of 100 mm and the results were as follows.
- Table 2 is as follows.
- Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Flexural modulus (Mpa) 970 285 850 310 Flexural Strength (N / cm 2 ) 260 180 120 130
- the polyester composite according to Example 1 has a flexural modulus of about 970 Mpa, is formed in a single layer, does not include a resin layer, and significantly improved compared to Comparative Examples 1 to 3 produced with low basis weight. As you can see, the flexural strength was found to be the highest at about 260 N / cm 2 .
- Comparative Example 2 which is a GMT compounding polypropylene and glass fiber
- the flexural modulus and the flexural strength were not only lower than those of Example 1 of the present invention, but also contained glass fibers, so that the worker was Dust generated by the fibers may be generated, which may harm the health of workers.
- the polyester composite according to the present invention does not use glass fibers, the flexural modulus and flexural strength are excellent by controlling the basis weight of the polyester foam appropriately and compounding the polyester resin layer to an appropriate thickness. It was found to be improved. In addition, since it does not contain glass fibers, it is possible to prevent damage caused by dust generation when the worker works with the composite. In addition, in the composite according to the present invention, since both the foam and the resin layer are made of polyester, there is an effect of easy recycling.
- the composite of the multilayer structure including the polyester foam and the polyester resin layer according to the present invention can be used as interior and exterior materials for automobiles and heat insulating materials for buildings.
Abstract
Description
셀 크기 (㎛) | 셀 크기 편차 (%) | |
실시예 1 | 300 | 5% 이하 |
실시예 1 | 비교예 1 | 비교예 2 | 비교예 3 | |
굴곡탄성율(Mpa) | 970 | 285 | 850 | 310 |
굴곡강도(N/cm2) | 260 | 180 | 120 | 130 |
Claims (15)
- n층(n은 2 이상의 정수)의 폴리에스테르 발포체가 적층되고,상기 폴리에스테르 발포체의 각층의 일면 또는 양면에 형성된 폴리에스테르 수지층을 포함하는 폴리에스테르 복합체.
- 제 1 항에 있어서,상기 폴리에스테르 복합체는, ASTM D 790에 의거하여 시편의 지지 간격(Span)을 100 mm 로 고정하고 5 mm/min 속도로 굴곡 하중을 가할 때 측정된 굴곡탄성률(Stiffness)이 400 Mpa 이상인 것을 특징으로 하는 폴리에스테르 복합체.
- 제 1 항에 있어서,폴리에스테르 복합체는, ASTM D 790에 의거하여 시편의 지지 간격(Span)을 100 mm 로 고정하고 5 mm/min 속도로 굴곡 하중을 가할 때 측정된 굴곡강도가 20 N/cm2 이상인 폴리에스테르 복합체.
- 제 1 항에 있어서,하기 조건 1을 만족하는 폴리에스테르 복합체:[조건 1]((Lt1-Lt0)/Lt0) x 100 < 1(%)상기 조건 1은, KS R 0021의 가속 내광성 시험에 따라, 300 내지 400nm 파장의 광을 조도 255 W/m2의 광으로 90일간 조사한 전후의 치수(가로, 세로, 높이의 평균값) 변화율을 의미하며, Lt0는 처리 전의 치수를 나타내고, Lt1는 처리 후의 치수를 나타낸다.
- 제 1 항에 있어서,상기 폴리에스테르 복합체는, 유리 섬유(Glass Fiber)를 포함하지 않는 것을 특징으로 하는 폴리에스테르 복합체.
- 제 1 항에 있어서,폴리에스테르 수지층은 단열제, 난연제, VOC 저감제, 친수화제, 방수제, 항균제, 소취제 및 자외선 차단제 중 1 종 이상이 수지층 내에 분산된 형태인 폴리에스테르 복합체.
- 제 1 항에 있어서,폴리에스테르 복합체는,두께가 평균 1 내지 5 mm 범위인 폴리에스테르 발포체; 및두께가 평균 10 내지 100 mm 범위인 폴리에스테르 발포체 중 어느 하나 이상을 포함하는 폴리에스테르 복합체.
- 제 1 항에 있어서,폴리에스테르 복합체의 평량은 평균 300 내지 3,000 g/m2 범위인 폴리에스테르 복합체.
- 제 1 항에 있어서,폴리에스테르 발포체는 폴리에틸렌 테레프탈레이트(Polyethylene Terephthalate, PET) 발포체이고,폴리에스테르 수지층은 폴리에틸렌 테레프탈레이트 수지층인 것을 특징으로 하는 폴리에스테르 복합체.
- 제 1 항에 있어서,폴리에스테르 수지층은 종방향(기계방향=MD)으로 2 내지 8 배 연신되고, 횡방향(기계방향에 수직=TD)으로 1.1 내지 6 배 연신되며, 전체 연신 배율은 1.5 내지 7 배인 폴리에스테르 이축 연신 필름인 것을 특징으로 하는 폴리에스테르 복합체.
- 제 1 항에 있어서,폴리에스테르 복합체의 일면 또는 양면에 형성된 폴리에스테르 섬유층을 더 포함하는 폴리에스테르 복합체.
- 제 12 항에 있어서,폴리에스테르 섬유층은,이형단면 중공섬유의 집합체로 형성되며,상기 이형단면 중공섬유는, 단면 형상을 기준으로, 중공부, 형태유지부 및 부피제어부로 이루어지되,상기 부피제어부는 섬유 중심의 반대 방향으로 돌출된 형태일 수 있으며, 돌출된 형태의 말단부는 라운드 형상으로 이루어진 폴리에스테르 복합체.
- 제 1 항 내지 제 13 항 중 어느 한 항에 따른 폴리에스테르 복합체를 포함하는 자동차 내외장재.
- 제 1 항 내지 제 13 항 중 어느 한 항에 따른 폴리에스테르 복합체를 포함하는 건축용 단열재.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/752,301 US10696012B2 (en) | 2015-08-13 | 2016-07-29 | Composite of multilayer structure comprising polyester foam and polyester resin layer, and use thereof |
JP2018527701A JP6578443B2 (ja) | 2015-08-13 | 2016-07-29 | ポリエステル発泡体とポリエステル樹脂層を含む多層構造の複合体及びその用途 |
CN201680048337.7A CN107921754A (zh) | 2015-08-13 | 2016-07-29 | 包含聚酯发泡体和聚酯树脂层的多层结构的复合物及其用途 |
EP16835356.3A EP3335875B1 (en) | 2015-08-13 | 2016-07-29 | Composite of multilayer structure comprising polyester foam and polyester resin layer, and use thereof |
Applications Claiming Priority (4)
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KR1020150114264A KR20170024177A (ko) | 2015-08-13 | 2015-08-13 | 기능성 첨가제가 분산된 영역을 포함하는 면상 적층체 |
KR10-2015-0114264 | 2015-08-13 | ||
KR1020160052879A KR101888816B1 (ko) | 2016-04-29 | 2016-04-29 | 폴리에스테르 복합 시트 |
KR10-2016-0052879 | 2016-04-29 |
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WO2017026716A1 true WO2017026716A1 (ko) | 2017-02-16 |
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PCT/KR2016/008388 WO2017026716A1 (ko) | 2015-08-13 | 2016-07-29 | 폴리에스테르 발포체와 폴리에스테르 수지층을 포함하는 다층 구조의 복합체 및 이의 용도 |
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US (1) | US10696012B2 (ko) |
EP (1) | EP3335875B1 (ko) |
JP (1) | JP6578443B2 (ko) |
CN (1) | CN107921754A (ko) |
WO (1) | WO2017026716A1 (ko) |
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WO2018201649A1 (zh) * | 2017-05-03 | 2018-11-08 | 苏州轩朗塑料制品有限公司 | 一种改性纳米保温建筑材料的制备方法及其应用 |
WO2019234074A1 (en) * | 2018-06-05 | 2019-12-12 | Anheuser-Busch Inbev S.A. | Reinforced composite transport container for beverages |
WO2019234073A1 (en) * | 2018-06-05 | 2019-12-12 | Anheurser-Busch Inbev S.A. | Composite transport container for beverages |
WO2019234071A1 (en) * | 2018-06-05 | 2019-12-12 | Anheuser-Busch Inbev S.A. | Reinforced composite transport container for beverages |
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JP2018144332A (ja) * | 2017-03-03 | 2018-09-20 | 東北資材工業株式会社 | 機能性発泡樹脂多層成形ボード及びその製造方法 |
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WO2019234073A1 (en) * | 2018-06-05 | 2019-12-12 | Anheurser-Busch Inbev S.A. | Composite transport container for beverages |
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US20180236746A1 (en) | 2018-08-23 |
EP3335875A1 (en) | 2018-06-20 |
US10696012B2 (en) | 2020-06-30 |
JP6578443B2 (ja) | 2019-09-18 |
EP3335875B1 (en) | 2022-07-06 |
CN107921754A (zh) | 2018-04-17 |
JP2018532624A (ja) | 2018-11-08 |
EP3335875A4 (en) | 2019-03-20 |
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