WO2013147392A1 - 가교된 폴리락트산을 이용한 보드 및 이의 제조방법 - Google Patents
가교된 폴리락트산을 이용한 보드 및 이의 제조방법 Download PDFInfo
- Publication number
- WO2013147392A1 WO2013147392A1 PCT/KR2012/010913 KR2012010913W WO2013147392A1 WO 2013147392 A1 WO2013147392 A1 WO 2013147392A1 KR 2012010913 W KR2012010913 W KR 2012010913W WO 2013147392 A1 WO2013147392 A1 WO 2013147392A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polylactic acid
- board
- acid resin
- parts
- weight
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/002—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor characterised by the choice of material
- B29C51/004—Textile or other fibrous material made from plastics fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/91—Heating, e.g. for cross linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
- B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/04—Polyesters derived from hydroxycarboxylic acids
- B29K2067/046—PLA, i.e. polylactic acid or polylactide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2511/00—Use of natural products or their composites, not provided for in groups B29K2401/00 - B29K2509/00, as filler
- B29K2511/14—Wood, e.g. woodboard or fibreboard
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
Definitions
- the present invention relates to a board using a cross-linked polylactic acid and a method for manufacturing the same, and more particularly, to include a cross-linked polylactic acid and wood fibers not only excellent workability in the manufacturing process, but also excellent in water resistance after processing and its manufacture It is about a method.
- PVC polyvinyl chloride
- Such boards are manufactured by extrusion or calendering using a resin such as polyvinyl chloride (PVC).
- PVC polyvinyl chloride
- the raw material is obtained entirely from crude oil, which is a limited resource, it is expected that problems such as supply and demand of raw materials will occur in the future due to exhaustion of petroleum resources.
- PVC polyvinyl chloride
- the existing board is a reinforced floor manufactured using HDF (High Density Fiberboard), these are wood plate products manufactured by molding, heat pressure by applying an adhesive to the wood fiber obtained by dissolving the wood raw material at high temperature, Complex machining is possible, and it is widely used in interior building finishing and furniture.
- HDF High Density Fiberboard
- the adhesive is mainly urea-formaldehyde resin or melamine-urea-formaldehyde resin, which is excellent in adhesion and inexpensive but not only irritates eyes and nasal skin after curing but also can cause atopic, bronchial asthma and prolonged cancer inhalation. It slowly releases formaldehyde, which can cause.
- formaldehyde which can cause.
- melamine can cause death from kidney stones if consumed in excess.
- melamine, urea, and formaldehyde, which are made from fossil resources not only lead to continuous price increases due to the depletion of fossil resources, but also consume a lot of energy in the manufacturing process, and release large amounts of greenhouse gases, which can be disposed of by incineration. When it releases many harmful substances such as environmental hormones and toxic gases.
- polylactic acid Polylactic Acid or Polylactide resin extracted and synthesized from plant resources
- Polylactic acid is a resin produced by polymerizing a lactic acid obtained by fermenting starch extracted from renewable plant resources (corn, potato, sweet potato, etc.), which is an eco-friendly resin that not only reduces CO 2 but also reduces non-renewable energy.
- renewable plant resources corn, potato, sweet potato, etc.
- Patent Publication No. 10-2008-0067424 disclose boards using such polylactic acid resins.
- the board made of polylactic acid resin is compared to the board made of PVC resin, compared to the board made of PVC resin, it is stuck to the processing equipment during hot plywood processing or high temperature processing Due to lack of viscoelasticity, the machining process of laminating in multiple layers was not easy. Therefore, improvement of water resistance and workability were very important subjects.
- the polylactic acid resin is crosslinked through thermal initiation or radiation irradiation.
- the manufacturing method of the board according to an embodiment of the present invention for achieving the above object comprises the steps of making a polylactic acid resin mixture by mixing a polylactic acid resin, a crosslinking agent, a crosslinking aid; Crosslinking a crosslinking reaction upon thermal initiation with respect to the polylactic acid resin mixture; Preparing a board forming composition comprising the crosslinked polylactic acid resin and 50 to 150 parts by weight of wood fibers relative to 100 parts by weight of the crosslinked polylactic acid resin; And thermoforming the composition for forming a board, followed by post-treatment to form a board.
- the manufacturing method of the board according to another embodiment of the present invention for achieving the above object comprises the steps of making a polylactic acid resin mixture by mixing a polylactic acid resin, a crosslinking aid; Crosslinking an electron beam irradiation crosslinking reaction with respect to the polylactic acid resin mixture; Preparing a board forming composition comprising the crosslinked polylactic acid resin and 50 to 150 parts by weight of wood fibers relative to 100 parts by weight of the crosslinked polylactic acid resin; And thermoforming the composition for forming a board, followed by post-treatment to form a board.
- a multilayer flooring according to an embodiment of the present invention is characterized in that it includes a board of the present invention.
- the method for producing a multilayer floor according to an embodiment of the present invention in order to achieve the above object is characterized in that it comprises a method of manufacturing the board of the present invention described above.
- the board using the cross-linked polylactic acid resin according to the present invention can solve the problem of supply and demand of raw materials due to depletion of petroleum resources by using the plant-based polylactic acid resin instead of the petroleum-based PVC commonly used as a binder.
- the board using the cross-linked polylactic acid resin according to the present invention has an environmentally friendly advantage of less emissions of environmentally harmful substances, such as HCl during manufacture, and easy disposal.
- Board according to an embodiment of the present invention comprises a cross-linked polylactic acid resin and wood fiber, the wood fiber is included 50 to 150 parts by weight relative to 100 parts by weight of the cross-linked polylactic acid resin, the cross-linked polylactic acid resin ten It is characterized by crosslinking through crosslinking reaction or irradiation.
- the cross-linked polylactic acid resin is cross-linked lactide or thermoplastic polyester of lactic acid, for example, by polymerizing the lactic acid produced by fermenting starch extracted from corn, potato, etc. Can be prepared. Since the corn, potatoes and the like are any renewable plant resources, the polylactic acid resin that can be secured from them can effectively cope with the problems caused by the depletion of petroleum resources.
- polylactic acid resin has significantly less emissions of environmentally harmful substances such as HCl during use or disposal compared to petroleum-based materials such as polyvinyl chloride (PVC), and is environmentally friendly in that it can be easily decomposed under natural environment during disposal.
- PVC polyvinyl chloride
- the polylactic acid resin may be classified into a crystalline polylactic acid (c-polylactic acid) resin and an amorphous polylactic acid (a-polylactic acid) resin.
- a crystalline polylactic acid resin in the case of the crystalline polylactic acid resin, a bleeding phenomenon in which the plasticizer flows out to the board surface may occur, whereas in the case of using the amorphous polylactic acid resin, the bleeding phenomenon may be prevented, but the disadvantage of weak dimensional stability and thermal stability is disadvantageous. It is most preferable to mix and use the said crystalline and amorphous resin.
- the polylactic acid resin preferably includes at least one selected from L-polylactide, D-polylactide, and L, D-polylactide.
- the apparent specific gravity of the wood fiber as a material included in the board of the present invention is preferably 100 ⁇ 500kg / m 3 is not limited to this, the moisture content is preferably less than 3.0%. If the apparent specific gravity is less than 100kg / m 3 , there is a problem that is difficult to add, if the 500kg / m 3 or more there is a problem difficult to mix. If the moisture content is more than 3.0%, there is a possibility of difficulty in hydrolysis of PLA as well as difficulty in generating steam during processing.
- the present invention includes a flooring of a multi-layer structure including a board, wherein the board is as described above, by including a cross-linked polylactic acid and wood fibers to increase the melt strength and easy heat processing, after processing In the product, physical properties such as water resistance, tensile strength, and elongation are improved.
- the polylactic acid resin, a crosslinking agent, a cross-linking aid to prepare a polylactic acid resin mixture; Crosslinking a crosslinking reaction upon thermal initiation with respect to the polylactic acid resin mixture; Preparing a board forming composition comprising the crosslinked polylactic acid resin and 50 to 150 parts by weight of wood fibers relative to 100 parts by weight of the crosslinked polylactic acid resin; And thermoforming the composition for forming a board, followed by post-treatment to form a board.
- a method of manufacturing a board may include: preparing a polylactic acid resin mixture by mixing a polylactic acid resin and a crosslinking aid; Crosslinking an electron beam irradiation crosslinking reaction with respect to the polylactic acid resin mixture; Preparing a board forming composition comprising the crosslinked polylactic acid resin and 50 to 150 parts by weight of wood fibers relative to 100 parts by weight of the crosslinked polylactic acid resin; And thermoforming the composition for forming a board, followed by post-treatment to form a board.
- a crosslinking agent or crosslinking aid with respect to 100 parts by weight of polylactic acid in order to obtain crosslinked polylactic acid. If the content of the crosslinking agent or crosslinking aid is less than 0.01 part by weight, there is a problem in that the crosslinking reaction is not initiated. If the content of the crosslinking agent is 10.0 parts by weight or more, the crosslinking degree is too high, indicating that the thermosetting property is difficult to process.
- an organic peroxide is preferable. Specifically, t-amyl peroxy-2-ethylhexanoate, 1,1-di (t-butylperoxy) -3,3,5-trimethylcyclo Hexane, dicumyl peroxide (DCP), 2,5-dimethyl-2,5-di (t-butylperoxy) hexane, t-butyl- (2-ethylhexyl) modoferoxycarbonate, and the like. It is not limited.
- the crosslinking agent may also include a crosslinking aid such as triaryl isocyanate (TAIC).
- crosslinking aid by electron beam irradiation examples include, but are not limited to, triaryl isocyanate (TAIC).
- the wood fiber is contained in an amount of 50 to 150 parts by weight based on 100 parts by weight of the polylactic acid.
- the content of wood fiber is less than 50 parts by weight, processing such as cutting is difficult and commercialization is difficult due to an increase in price.
- it is 150 parts by weight or more it is difficult to use as a board due to not only thermoforming but also weak bending strength. There is.
- the wood fiber has an apparent specific gravity of preferably 100 to 500 kg / m 3 , but is not limited thereto.
- the water content is preferably less than 3.0%. If the apparent specific gravity is less than 100kg / m 3 , there is a problem that is difficult to add, if the 500kg / m 3 or more there is a problem difficult to mix. If the moisture content is more than 3.0%, there is a high possibility of hydrolysis of PLA as well as difficulty in generating steam during processing.
- composition for board formation of the present invention may further comprise a processing aid.
- the acrylic copolymer used as the processing aid reinforces the melt strength of the PLA resin to enable calendering and pressing.
- Acrylic copolymers applicable to the present invention are commercially available from PA828 (manufactured by LG Chem), Biostrength TM 700 (manufactured by Arkema), BPMS-255, 265 (manufactured by Rohm and Haas), Biomax (R) Strong 100, 120 (Dupont). Production) and the like.
- the content of the processing aid is preferably 0.1 to 50 parts by weight based on 100 parts by weight of polylactic acid resin. If the content is less than 0.1 parts by weight, the effect of reinforcing the melt strength is insufficient, and if more than 50 parts by weight, the melt strength reinforcement width is not only small but there is a problem that the manufacturing cost increases.
- crosslink polylactic acid 0.01-10.0 parts by weight of a crosslinking agent or crosslinking aid is added to 100 parts by weight of polylactic acid in a banbury, kneader, or extruder, and then thermally crosslinked at 120 to 200 ° C. Or 10-100 kGy electron beam irradiation.
- a board forming composition is prepared by mixing and kneading each raw material of the board forming composition comprising the cross-linked polylactic acid resin and wood fibers of the present invention described above.
- the mixing and kneading process of the raw material for example, liquid or powdery raw material may be performed using a super mixer, an extruder, a kneader, two or three rolls and the like.
- the mixed raw materials are kneaded at a temperature of about 120 to 200 ° C. using a banbury mixer or the like, and the kneaded raw materials are about 120 to 200 ° C. for more efficient mixing.
- the mixing and kneading process may be repeated in multiple stages, such as in the manner of primary and secondary mixing using a two rolls or the like at a temperature of. At this time, the description of each raw material is as described above, it will be omitted here.
- the composition for forming a board is thermoformed in a board form at 120 to 200 ° C.
- the temperature at the time of thermoforming be 120 to 200 ° C., when the thermoforming temperature is less than 120 ° C., there is a problem that thermoforming is difficult, and when the temperature is 200 ° C. or more, the resin is carbonized.
- Thermoforming is not particularly limited as a method common to a person skilled in the art, and for example, a conventional apparatus such as an inverted L-type four roll calender may be used.
- the present invention includes a method for producing a flooring of a multi-layered structure, wherein the method for producing a flooring of a multi-layered structure includes the above-described method for producing a board, with respect to 100 parts by weight of the crosslinked polylactic acid resin, Thermoforming the board with a composition comprising 50 to 150 parts by weight of wood fibers; Sanding, surface treatment, aging and cutting; characterized in that it comprises a.
- the method of manufacturing a flooring of a multi-layered structure of the present invention comprises the steps of preparing a transparent layer, a printed layer, an easy layer of the board with a composition comprising the cross-linked polylactic acid; Preparing a base layer with a composition obtained by mixing 50 to 150 parts by weight of wood fibers with respect to 100 parts by weight of the crosslinked polylactic acid; Thermally plywood a printed layer and an easy layer on the top and bottom of the Venice layer, respectively; Printing on the printed layer; Plywood the transparent layer on the printed printed layer; Coating a surface treating agent on the transparent layer; It may include the step of aging, cutting and packaging.
- the workability is very easy because the workability is excellent, and the product thereby has the effect of excellent water resistance.
- crosslinking adjuvant TAIC After adding 1.0 weight part of crosslinking adjuvant TAIC with respect to 100 weight part of polylactic acid resin, the crosslinking adjuvant was fully disperse
- thermoforming composition comprising polylactic acid crosslinked by the thermal initiation or electron beam irradiation method to produce a transparent layer, a print layer and an easy layer of a multi-layer board by extrusion or calender (120) at 120 ⁇ 200 °C and 100 parts by weight of wood fiber 80
- the base layer or the chip through board of the multilayer board was prepared in a calendar at 120 to 200 ° C. with a composition including a mixture of parts by weight.
- the board according to the present invention can be seen that the crosslinking of the polylactic acid increases the melt strength can be processed at a relatively high processing temperature and excellent water resistance of the product.
Abstract
Description
실시예 | 비교예 | |
내수성* | 8 % | 60 % |
가공성 | 카렌다 가공성 우수 | 카렌다 가공 불가 |
Claims (15)
- 가교된 폴리락트산 수지 및 목섬유를 포함하고,상기 목섬유는 상기 가교된 폴리락트산 수지 100중량부 대비 50~150중량부 포함되며,상기 가교된 폴리락트산 수지는 열개시 가교반응 또는 방사선 조사를 통하여 가교된 것을 특징으로 하는 보드.
- 제 1항에 있어서,상기 폴리락트산 수지는 L-폴리락타이드, D-폴리락타이드, L,D-폴리락타이드 중에서 선택된 1 이상을 포함하는 것을 특징으로 하는 보드.
- 제 1항에 있어서,상기 목섬유는 겉보기 비중이 100~500 kg/m3, 수분 함량이 3%이하인 것을 특징으로 하는 보드.
- 폴리락트산 수지, 가교제, 가교조제를 혼합하여 폴리락트산 수지 혼합물을 만드는 단계;상기 폴리락트산 수지 혼합물에 대하여 열개시 가교 반응을 일으켜 가교시키는 단계;상기 가교된 폴리락트산 수지와, 상기 가교된 폴리락트산 수지 100중량부 대비 50~150중량부의 목섬유를 포함하는 보드 형성용 조성물을 제조하는 단계; 및상기 보드 형성용 조성물을 열성형한 후, 후처리하여 보드를 형성하는 단계;를 포함하는 것을 특징으로 하는 보드의 제조방법.
- 폴리락트산 수지, 가교조제를 혼합하여 폴리락트산 수지 혼합물을 만드는 단계;상기 폴리락트산 수지 혼합물에 대하여 전자선 조사 가교 반응을 일으켜 가교시키는 단계;상기 가교된 폴리락트산 수지와, 상기 가교된 폴리락트산 수지 100중량부 대비 50~150중량부의 목섬유를 포함하는 보드 형성용 조성물을 제조하는 단계; 및상기 보드 형성용 조성물을 열성형한 후, 후처리하여 보드를 형성하는 단계;를 포함하는 것을 특징으로 하는 보드의 제조방법.
- 제 4항 또는 제 5항에 있어서,상기 폴리락트산 수지는 L-폴리락타이드, D-폴리락타이드, L,D-폴리락타이드 중에서 선택된 1 이상을 포함하는 것을 특징으로 하는 보드의 제조방법.
- 제 4항 또는 제 5항에 있어서,상기 목섬유는 겉보기 비중이 100~500 kg/m3, 수분 함량이 3%이하인 것을 특징으로 하는 보드의 제조방법.
- 제 4항에 있어서,상기 가교제는 폴리락트산 100중량부 대비 0.01~10.0중량부 포함되며,t-아밀 퍼옥시-2-에틸헥사노에이트, 1,1-디(t-부틸퍼옥시)-3,3,5-트리메틸사이클로헥산, 디큐밀퍼옥사이드(DCP), 2,5-디메틸-2,5-디(t-부틸퍼옥시)헥산, t-부틸-(2-에틸헥실)모도퍼옥시카보네이트 중에서 선택되는 1 이상인 것을 특징으로 하는 보드의 제조방법.
- 제 4항 또는 제 5항에 있어서,상기 가교조제는 폴리락트산 100중량부 대비 0.01~10.0중량부 포함되며, 트리아릴시아누레이트인 것을 특징으로 하는 보드의 제조방법.
- 제 4항 또는 제 5항에 있어서,상기 폴리락트산 수지 혼합물은 가공조제를 더 포함하는 것을 특징으로 하는 보드의 제조방법.
- 제 10항에 있어서,상기 가공조제는 아크릴계 공중합체인 것을 특징으로 하는 보드의 제조방법.
- 제 4항에 있어서,상기 열개시 가교 반응시 온도는 120~200℃인 것을 특징으로 하는 보드의 제조방법.
- 제 5항에 있어서,상기 전자선 조사시 에너지량은 10~100kGy인 것을 특징으로 하는 보드의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항의 보드를 포함하는 다층 바닥재.
- 제 4항 또는 제 5항의 제조방법을 포함하는 다층 바닥재의 제조방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2014138184/13A RU2594515C2 (ru) | 2012-03-29 | 2012-12-14 | Плита на основе поперечно-сшитой полимолочной кислоты и способ ее получения |
CN201280071748.XA CN104245260B (zh) | 2012-03-29 | 2012-12-14 | 利用经交联的聚乳酸的板及其制备方法 |
US14/385,615 US20150051320A1 (en) | 2012-03-29 | 2012-12-14 | Board using crosslinked polylactic acid and method for preparing same |
JP2015501557A JP5963937B2 (ja) | 2012-03-29 | 2012-12-14 | 架橋されたポリ乳酸を用いたボード及びその製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2012-0032395 | 2012-03-29 | ||
KR1020120032395A KR101505708B1 (ko) | 2012-03-29 | 2012-03-29 | 가교된 폴리락트산을 이용한 보드 및 이의 제조방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013147392A1 true WO2013147392A1 (ko) | 2013-10-03 |
Family
ID=49260604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2012/010913 WO2013147392A1 (ko) | 2012-03-29 | 2012-12-14 | 가교된 폴리락트산을 이용한 보드 및 이의 제조방법 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20150051320A1 (ko) |
JP (1) | JP5963937B2 (ko) |
KR (1) | KR101505708B1 (ko) |
CN (1) | CN104245260B (ko) |
RU (1) | RU2594515C2 (ko) |
TW (1) | TWI487734B (ko) |
WO (1) | WO2013147392A1 (ko) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105934471A (zh) * | 2014-01-24 | 2016-09-07 | 斯道拉恩索公司 | 用于降低聚酯的熔体粘度并改善热封接性能以及用于制造经热封接的容器或包装物的方法 |
CN105934470A (zh) * | 2014-01-24 | 2016-09-07 | 斯道拉恩索公司 | 聚交酯的用途以及纸或板的经热封接的容器或包装物的制造方法 |
CN106049150A (zh) * | 2016-06-17 | 2016-10-26 | 来宝根 | 一种纤维板的制造方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016026920A1 (en) * | 2014-08-21 | 2016-02-25 | Styrolution Group Gmbh | Polylactic acid composites with natural fibers |
CN104861599A (zh) * | 2015-05-13 | 2015-08-26 | 常州龙骏天纯环保科技有限公司 | 一种可降解聚乳酸复合物及其制备方法 |
CN107366039B (zh) * | 2017-07-05 | 2019-08-27 | 浙江理工大学 | 交联左旋聚乳酸/低分子量左旋聚乳酸共混纤维的制备方法及产物 |
EP3652251A4 (en) * | 2017-07-11 | 2020-12-30 | Queen's University At Kingston | BIOBASED ADDITIVE FOR THERMOPLASTIC POLYESTER |
PT3715074T (pt) * | 2019-03-26 | 2021-08-16 | Flooring Technologies Ltd | Produto reciclável de derivados de madeira, em particular um laminado decorativo reciclável à base de material de derivados de madeira |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR830001467A (ko) * | 1979-12-24 | 1983-05-17 | 사다아끼 다까기 | 휠라멘트 록크재의 제조방법 및 그 장치 |
KR20020062877A (ko) * | 2002-06-19 | 2002-07-31 | 넥솔테크(주) | 폭쇄된 바이오매스 고함량의 생분해성 블록·그래프트혼성중합 매트릭스 컴파운드의 성형방법 |
JP2003055871A (ja) * | 2001-08-10 | 2003-02-26 | Araco Corp | 生分解性成形体及びその製造方法 |
JP2005200470A (ja) * | 2004-01-13 | 2005-07-28 | Toyota Boshoku Corp | 木質繊維が樹脂で結合されている成形体の製造方法 |
JP2009521341A (ja) * | 2005-12-22 | 2009-06-04 | ニュージーランド フォレスト リサーチ インスティテュート リミテッド | 木材繊維複合製品を製造する方法 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AR018359A1 (es) * | 1998-05-18 | 2001-11-14 | Dow Global Technologies Inc | Articulo resistente al calor , configurado, irradiado y reticulado, libre de un agente de reticulacion de silano |
JP2003119391A (ja) * | 2000-10-13 | 2003-04-23 | Matsui:Kk | 樹脂含有木粉ペレット |
JP4331467B2 (ja) * | 2002-12-04 | 2009-09-16 | ユニチカ株式会社 | 耐熱性を有する生分解性軽量パネル |
JP4288132B2 (ja) * | 2003-08-29 | 2009-07-01 | 株式会社グリーンバイオ | バイオマス材料と生分解性樹脂の複合材料 |
DE112004001201T5 (de) * | 2003-10-24 | 2006-08-10 | Japan Atomic Energy Research Institute | Bioabbaubares Material und Herstellungsverfahren für dasselbe |
JP4373763B2 (ja) * | 2003-10-24 | 2009-11-25 | 独立行政法人 日本原子力研究開発機構 | 生分解性材料および生分解性材料の製造方法 |
JP4498783B2 (ja) * | 2004-03-17 | 2010-07-07 | トヨタ紡織株式会社 | 木質成形体の製造方法 |
JP5246645B2 (ja) * | 2005-08-02 | 2013-07-24 | ユニチカ株式会社 | 樹脂組成物の製造方法 |
JP3999250B1 (ja) * | 2006-09-28 | 2007-10-31 | ニチハ株式会社 | アルデヒドを捕捉分解する繊維板 |
CN100532454C (zh) * | 2007-04-02 | 2009-08-26 | 中国科学院长春应用化学研究所 | 一种耐热聚乳酸基复合材料及其制备方法 |
WO2009001625A1 (ja) * | 2007-06-25 | 2008-12-31 | Sumitomo Electric Industries, Ltd. | 樹脂組成物及び該樹脂組成物からなる成形体の製造方法 |
JP2009018442A (ja) * | 2007-07-10 | 2009-01-29 | Toray Ind Inc | 複合ボードおよびその製造方法 |
KR20090032169A (ko) * | 2007-09-27 | 2009-04-01 | 이홍재 | 홀 드릴링용 엔트리 시이트 |
US10087316B2 (en) * | 2008-04-29 | 2018-10-02 | The Procter & Gamble Company | Polymeric compositions and articles comprising polylactic acid and polyolefin |
CN101538401A (zh) * | 2009-03-13 | 2009-09-23 | 上海大学 | 耐热型二元纤维/聚乳酸基复合材料及其制备方法 |
CN101570624B (zh) * | 2009-06-05 | 2011-04-06 | 华东理工大学 | 一种生物质基聚乳酸复合材料的制备方法 |
CN101591467A (zh) * | 2009-06-24 | 2009-12-02 | 西安工业大学 | 一种聚乳酸基木/塑复合材料及其制备方法 |
KR101169552B1 (ko) * | 2009-11-25 | 2012-07-27 | (주)엘지하우시스 | 목섬유와 지오폴리머를 이용한 복합 보드 제조용 조성물 및 복합 보드 |
-
2012
- 2012-03-29 KR KR1020120032395A patent/KR101505708B1/ko active IP Right Grant
- 2012-12-14 JP JP2015501557A patent/JP5963937B2/ja not_active Expired - Fee Related
- 2012-12-14 US US14/385,615 patent/US20150051320A1/en not_active Abandoned
- 2012-12-14 WO PCT/KR2012/010913 patent/WO2013147392A1/ko active Application Filing
- 2012-12-14 CN CN201280071748.XA patent/CN104245260B/zh active Active
- 2012-12-14 RU RU2014138184/13A patent/RU2594515C2/ru active
-
2013
- 2013-03-19 TW TW102109699A patent/TWI487734B/zh not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR830001467A (ko) * | 1979-12-24 | 1983-05-17 | 사다아끼 다까기 | 휠라멘트 록크재의 제조방법 및 그 장치 |
JP2003055871A (ja) * | 2001-08-10 | 2003-02-26 | Araco Corp | 生分解性成形体及びその製造方法 |
KR20020062877A (ko) * | 2002-06-19 | 2002-07-31 | 넥솔테크(주) | 폭쇄된 바이오매스 고함량의 생분해성 블록·그래프트혼성중합 매트릭스 컴파운드의 성형방법 |
JP2005200470A (ja) * | 2004-01-13 | 2005-07-28 | Toyota Boshoku Corp | 木質繊維が樹脂で結合されている成形体の製造方法 |
JP2009521341A (ja) * | 2005-12-22 | 2009-06-04 | ニュージーランド フォレスト リサーチ インスティテュート リミテッド | 木材繊維複合製品を製造する方法 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105934471A (zh) * | 2014-01-24 | 2016-09-07 | 斯道拉恩索公司 | 用于降低聚酯的熔体粘度并改善热封接性能以及用于制造经热封接的容器或包装物的方法 |
CN105934470A (zh) * | 2014-01-24 | 2016-09-07 | 斯道拉恩索公司 | 聚交酯的用途以及纸或板的经热封接的容器或包装物的制造方法 |
KR20160113234A (ko) * | 2014-01-24 | 2016-09-28 | 스토라 엔소 오와이제이 | 폴리락타이드의 용도 및 열봉합된 종이 또는 보드 컨테이너 또는 패키지 제조 방법 |
EP3097144A4 (en) * | 2014-01-24 | 2017-09-06 | Stora Enso Oyj | Use of polylactide and method of manufacturing a heat-sealed paper or board container or package |
AU2015208775B2 (en) * | 2014-01-24 | 2018-04-19 | Stora Enso Oyj | Use of polylactide and method of manufacturing a heat-sealed paper or board container or package |
CN105934471B (zh) * | 2014-01-24 | 2019-04-23 | 斯道拉恩索公司 | 用于降低聚酯的熔体粘度并改善热封接性能以及用于制造经热封接的容器或包装物的方法 |
CN105934470B (zh) * | 2014-01-24 | 2019-09-17 | 斯道拉恩索公司 | 聚交酯的用途以及纸或板的经热封接的容器或包装物的制造方法 |
US10493700B2 (en) | 2014-01-24 | 2019-12-03 | Stora Enso Oyj | Methods for lowering melt viscosity and improving heat-sealability of polyester and for manufacturing a heat-sealed container or package |
KR102350217B1 (ko) | 2014-01-24 | 2022-01-11 | 스토라 엔소 오와이제이 | 폴리락타이드의 용도 및 열봉합된 종이 또는 보드 컨테이너 또는 패키지 제조 방법 |
CN106049150A (zh) * | 2016-06-17 | 2016-10-26 | 来宝根 | 一种纤维板的制造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20150051320A1 (en) | 2015-02-19 |
TWI487734B (zh) | 2015-06-11 |
CN104245260A (zh) | 2014-12-24 |
RU2014138184A (ru) | 2016-05-27 |
RU2594515C2 (ru) | 2016-08-20 |
CN104245260B (zh) | 2017-04-12 |
JP5963937B2 (ja) | 2016-08-03 |
KR20130110425A (ko) | 2013-10-10 |
TW201339216A (zh) | 2013-10-01 |
JP2015514139A (ja) | 2015-05-18 |
KR101505708B1 (ko) | 2015-03-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2013147392A1 (ko) | 가교된 폴리락트산을 이용한 보드 및 이의 제조방법 | |
WO2013089387A1 (ko) | 가교된 폴리락트산을 이용한 발포 시트 및 이의 제조방법 | |
JP6653574B2 (ja) | ポリマー混成物、得られたパネル及びその製法 | |
WO2011115413A2 (ko) | Pla 수지를 사용한 바닥재 | |
CN103146094A (zh) | 一种改性塑料及其制备方法和用途 | |
WO2011102615A2 (ko) | 바닥재 | |
WO2013147399A1 (ko) | 폴리락트산과 목섬유를 이용한 친환경 보드 및 그 제조 방법 | |
WO2013147401A1 (ko) | 가교된 폴리락트산을 이용한 보드 및 이의 제조방법 | |
WO2015101232A1 (zh) | 一种无卤环氧树脂组合物及其用途 | |
WO2010071298A2 (ko) | 난연성 접착제 조성물 및 그 제조방법 | |
CN111873592B (zh) | 一种可降解地板及其制备方法 | |
WO2013025048A2 (ko) | Pla 수지를 사용한 친환경 시트 | |
WO2011068286A1 (ko) | 친환경 파티클 보드 제조방법 | |
CN104231512A (zh) | 一种可降解木塑复合材料的制备方法及制品 | |
CN107266899A (zh) | 一种木塑复合地板及其制备方法 | |
CN105440578A (zh) | 一种室内装饰材料 | |
WO2013157725A1 (ko) | Pla수지를 이용한 칩마블 바닥재 | |
CN106366680A (zh) | 一种实验台用的抗紫外线的木塑板材及其制备方法 | |
CN103044864A (zh) | 一种阻燃pet材料及其制备方法 | |
CN105778274A (zh) | 一种秸秆木塑防火门板及其生产方法 | |
KR102613389B1 (ko) | 절단용 고정 보조 지그를 사용하는 ESS용 난연 PET 3-Layer 시트 제조방법 | |
CN103289300A (zh) | 一种无卤阻燃abs材料及其制备方法 | |
CN107099090A (zh) | 一种环保型隔音木塑及其制备方法 | |
CN106380883A (zh) | 一种实验台用的三氧化二锑增强的木塑板材及其制备方法 | |
CN106928684A (zh) | 一种用于电脑风扇的塑料及其制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12873292 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14385615 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2015501557 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2014138184 Country of ref document: RU Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12873292 Country of ref document: EP Kind code of ref document: A1 |