WO2022024918A1 - 成形用樹脂材料およびその製造方法 - Google Patents
成形用樹脂材料およびその製造方法 Download PDFInfo
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- WO2022024918A1 WO2022024918A1 PCT/JP2021/027297 JP2021027297W WO2022024918A1 WO 2022024918 A1 WO2022024918 A1 WO 2022024918A1 JP 2021027297 W JP2021027297 W JP 2021027297W WO 2022024918 A1 WO2022024918 A1 WO 2022024918A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H8/00—Macromolecular compounds derived from lignocellulosic materials
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- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
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- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/203—Solid polymers with solid and/or liquid additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/16—Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- 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
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- 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
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- 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
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/16—Biodegradable polymers
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- 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
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
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- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- 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
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Definitions
- the present invention relates to a molding resin material and a method for producing the same.
- the present invention relates to a thermoplastic molding material made from a pulverized hardwood chemical pulp and a thermoplastic resin typified by polypropylene or polylactic acid, and a method for producing the same.
- Biomass lumber as an industrial resource is attracting attention.
- Biomass material means a material derived from living organisms such as plants. Since biomass materials are organic substances, carbon dioxide is emitted when they are burned. However, the carbon contained in this is derived from carbon dioxide absorbed from the atmosphere by photosynthesis during the growth process of the biomass, so even if the biomass material is used, the amount of carbon dioxide in the atmosphere is not increased as a whole. It is said that you can think of it. This property is called carbon neutral.
- Patent Document 1 describes a composite material containing carboxylmethylated cellulose nanofibers, a polymer compound having a primary amino group, an acid-modified polyolefin, and a polyolefin.
- Patent Document 2 describes a cellulose composite material containing wood pulp and a polymer matrix.
- Patent Document 3 describes a method of mixing wood powder and a random polypropylene resin and producing a wood powder-containing resin injection-molded product by an injection molding machine.
- Patent Document 1 describes that carboxylmethylated cellulose nanofibers are used, but in order to carboxymethylate cellulose and further enhance uniform dispersibility with a polyolefin resin, a polymer compound having a primary amino group, It is necessary to add acid-modified polyolefin, which increases the cost.
- the subject of the present invention is a molding material in which woody biomass and a thermoplastic resin are uniformly mixed in a thermoplastic molding material in which woody biomass is mixed, and there is little cutting during molding such as injection. Regarding providing low cost.
- the present inventors selected a pulverized product of broad-leaved tree chemical pulp having a volume-based 50% average particle diameter (D50) of 100 ⁇ m or less measured by a laser diffraction / scattering method as woody biomass, and made it into polypropylene, polyethylene, or the like.
- D50 volume-based 50% average particle diameter
- the present invention includes, but is not limited to, the following.
- thermoplastic resin contains a polylactic acid-based resin.
- thermoplastic resin contains a polybutylene succinate-based resin.
- the molding resin material according to any one of (2) to (8), wherein the hardwood chemical pulp is a chemical pulp made from the genus Eucalyptus.
- a resin material for molding which comprises a pulverization step of pulverizing pulp to obtain a pulverized product having a volume-based 50% average particle diameter (D50) of 100 ⁇ m or less measured by a laser diffraction / scattering method.
- D50 volume-based 50% average particle diameter
- a method for producing crushed pulp (12) The method for producing a crushed pulp product for a molding resin material according to (11), wherein the pulp is a hardwood chemical pulp.
- a resin material for molding containing a pulverized product of hardwood chemical pulp can be stably produced. Further, by increasing the blending ratio of the hardwood chemical pulp, a resin material for molding having excellent carbon neutrality can be obtained.
- the crushed pulp product used in the present invention is an untreated cellulose raw material such as pulp which has been acid-hydrolyzed with a mineral acid (that is, an inorganic acid) such as hydrochloric acid, sulfuric acid, or nitric acid, or has not been acid-hydrolyzed. It can be obtained by mechanically pulverizing a cellulose raw material such as the pulp of the above.
- the molding resin material of the present invention contains 20 to 90% by mass of a pulverized pulp having a volume-based 50% average particle diameter (D50) of 100 ⁇ m or less measured by a laser diffraction / scattering method, and further contains a thermoplastic resin. contains.
- the pulp used as a raw material is preferably wood-derived pulp.
- the wood-derived pulp include hardwood-derived pulp and softwood-derived pulp, and hardwood-derived chemical pulp is particularly preferable.
- the pulping method (melting method) of these wood-derived chemical pulps is not particularly limited, and examples thereof include a sulfite cooking method, a craft cooking method, a soda-quinone cooking method, and an organosolve cooking method. can. Among these, the sulfite cooking method and the craft cooking method are preferable.
- the chemical pulp include kraft pulp (KP), melted kraft pulp (DKP), sulfite pulp (SP), melted sulfite pulp (DSP) and the like.
- chemical pulp either unbleached chemical pulp or bleached chemical pulp can be used.
- mechanical pulp such as crushed wood pulp (GP), refiner ground wood pulp (RGP), thermomechanical pulp (TMP), and chemithermomechanical pulp (CTMP) can also be used.
- broad-leaved chemical pulp broad-leaved kraft pulp, broad-leaved melted kraft pulp, broad-leaved sulphite pulp, broad-leaved soda pulp and the like can be used, and it is preferable to use broad-leaved kraft pulp and broad-leaved melted kraft pulp.
- the genus Eucalyptus is preferable.
- the genus Eucalyptus is Eucalyptus (hereinafter abbreviated as E.) calophylla, E. citriodora, E. diversicolor, E. globulus, E. grandis, E. urograndis, E. gummifera, E. marginata, E. nesophila, E. Examples include nitens, E. amygdalina, E. camaldulensis, E. delegatensis, E. gigantea, E. muelleriana, E. obliqua, E. regnans, E. sieberiana, E. viminalis, E. marginata, and the like.
- any of unbleached kraft pulp, oxygen-deflated lignin kraft pulp, and bleached kraft pulp can be used, but it is preferable to use bleached kraft pulp because it is easier to grind.
- the hardwood chemical pulp preferably has a fiber width of 10 to 25 ⁇ m and a wall thickness of 3.0 to 7.0 ⁇ m.
- the following is an example of a method for producing a pulverized product (powdered cellulose) of a pulp raw material that has been acid-hydrolyzed according to the present invention.
- Powdered cellulose is produced through a raw material pulp slurry preparation step, an acid hydrolysis reaction step, a neutralization / washing / deliquessing step, a drying step, a crushing step, and a classification step.
- the raw material pulp slurry preparation step is a step of preparing a raw material pulp slurry using a cellulose raw material.
- the acid hydrolysis reaction step is a step of hydrolyzing the raw material pulp slurry at an acid concentration of 0.10 to 1.0 N to prepare a hydrolyzate.
- the neutralization / washing / draining step is a step of neutralizing the hydrolyzate, washing the hydrolyzate, and then draining the liquid.
- the drying step is a step of drying the deflated hydrolyzate to obtain a dried product.
- the classification step is a step of crushing a dried product to obtain a crushed product. Through such a step, the cellulose powder of the present invention can be produced.
- the pulp that can be used in the method for producing powdered cellulose of the present invention can be in a fluid state or in a sheet form.
- the liquid pulp from the pulp bleaching process is used as a raw material, it is necessary to increase the concentration before putting it into the hydrolysis reaction tank. Is thrown in.
- a dry sheet of pulp is used as a raw material, the pulp is loosened with a crusher such as a roll crusher and then put into a reaction tank.
- a dispersion having a pulp concentration of 3 to 10% by weight (in terms of solid content) adjusted to an acid concentration of 0.1 to 30% by weight was subjected to conditions of a reaction temperature of 80 to 100 ° C. and a reaction time of 30 minutes to 3 hours.
- the hydrolyzed pulp is neutralized by adding an alkaline agent and washed.
- the pulp hydrolyzed in the liquid removal step and the waste acid are separated into solid and liquid.
- the hydrolyzed pulp is dried in a dryer and mechanically crushed and classified into a specified size by a crusher.
- the solid content concentration may be adjusted by dehydrating after neutralization, washing and deliquescent and before drying. By adjusting the solid content concentration before drying, it becomes easier to control the physical characteristics of the powdered cellulose.
- the following can be exemplified as the crusher used in the method for producing powdered cellulose of the present invention.
- Cutting type mill Mesh mill (manufactured by Horai Co., Ltd.), Atoms (manufactured by Yamamoto Hyakuma Seisakusho Co., Ltd.), Knife mill (manufactured by Palman Co., Ltd.), Cutter mill (manufactured by Tokyo Atomizer Manufacturing Co., Ltd.), CS Cutter (manufactured by Mitsui Mine Co., Ltd.) ), Rotary cutter mill (manufactured by Nara Kikai Seisakusho Co., Ltd.), turbo cutter (manufactured by Freund Sangyo Co., Ltd.), pulp crusher (manufactured by Mizuko Co., Ltd.), shredder (manufactured by Shinko Pantech Co., Ltd.), etc.
- Hammer type mill Joe crusher (manufactured by Makino Co., Ltd.) and hammer crusher (manufactured by Makino Sangyo Co., Ltd.).
- Impact type mill Pulverizer (manufactured by Hosokawa Micron Co., Ltd.), Fine Impact Mill (manufactured by Hosokawa Micron Co., Ltd.), Supermicron Mill (manufactured by Hosokawa Micron Co., Ltd.), Inomizer (manufactured by Hosokawa Micron Co., Ltd.), Fine Mill (manufactured by Nippon Pneumatic Industries Co., Ltd.) ), CUM type centrifugal mill (manufactured by Mitsui Mine Co., Ltd.), Exceed Mill (manufactured by Makino Sangyo Co., Ltd.), Ultraplex (manufactured by Makino Sangyo Co., Ltd.), Contraplex (manufactured by Makino Sangyo Co., Ltd.), Coroplex (manufactured by Makino Sangyo Co., Ltd.) Company), Sample Mill (Seishin Co., Ltd.), Bantam Mill (Se
- Airflow type mill CGS type jet mill (manufactured by Mitsui Mine Co., Ltd.), Micron Jet (manufactured by Hosokawa Micron Co., Ltd.), Counter Jet Mill (manufactured by Hosokawa Micron Co., Ltd.), Cross Jet Mill (manufactured by Kurimoto Iron Works Co., Ltd.), Supersonic speed Jet Mill (manufactured by Nippon Pneumatic Industries Co., Ltd.), Current Jet (manufactured by Nisshin Engineering Co., Ltd.), Jet Mill (manufactured by Misho Industry Co., Ltd.), Ebara Jet Micronizer (manufactured by Ebara Seisakusho Co., Ltd.), Ebara Triad Jet (manufactured by Ebara Seisakusho Co., Ltd.), Serene Mirror (manufactured by Masuko Sangyo Co., Ltd.), New Micro Sictomat (manufactured by Masuno Seisakusho
- Vertical roller mill Vertical roller mill (manufactured by Shinion Co., Ltd.), Vertical roller mill (manufactured by Chefler Japan Co., Ltd.), Roller mill (manufactured by Kotobuki Engineering & Research Co., Ltd.), VX mill (manufactured by Kurimoto, Ltd.), KVM type vertical mill (EarthTechnica Co., Ltd.) and IS mill (IHI Plant Engineering Co., Ltd.).
- Joe Crusher manufactured by Makino Co., Ltd.
- Pulverizer manufactured by Hosokawa Micron Co., Ltd.
- Supermicron Mill manufactured by Hosokawa Micron Co., Ltd.
- Tornado Mill manufactured by Nikkiso Co., Ltd.
- free crusher with excellent fine crushability.
- Nikkiso Co., Ltd. Non-Arti Machinery Mfg. Co., Ltd.
- Turbo Mill Feund Sangyo Co., Ltd.
- Spar Powder Mill Neishimura Machinery Mfg. Co., Ltd.
- Blade Mill Neshin Engineering Co., Ltd.
- Supersonic Jet Mill Neippon Pneumatic Mfg. Co., Ltd. It is preferable to use (manufactured by Nisshin Engineering Co., Ltd.) or Current Jet (manufactured by Nisshin Engineering Co., Ltd.).
- pulp is crushed into a crushed product. It is necessary that the volume-based 50% average particle diameter (D50) measured by the laser diffraction / scattering method of this pulverized product is 100 ⁇ m or less, and more preferably 60 ⁇ m or less. If the D50 of the crushed pulp is larger than 100 ⁇ m, uniform mixing with the resin becomes difficult, and the resin body is cut into small pieces at the outlet of the device that injects the mixture of the crushed material and the resin, and the pulp is carried out to the cooling treatment device. Problems such as difficulty may occur.
- D50 50% average particle diameter
- the volume-based 50% average particle size (D50) measured by the laser diffraction / scattering method can be measured by a laser diffraction / scattering type particle size distribution measuring device (manufactured by Malvern, device name: Mastersizer 2000) or the like.
- the crusher used when crushing pulp may be any device capable of crushing organic substances, and is not limited to, for example, a turbo mill, a ball mill, a rod mill, a bead mill, a conical mill, a disc mill, an edge mill, a hammer mill, a mortar, and a pellet.
- a mill, a VSI mill, a willy mill, a roller mill, a jet mill, a mascotder, or the like can be used.
- turbo mills manufactured by Freund Turbo Co., Ltd.
- tornado mills manufactured by Nikki So Co., Ltd.
- blade mills manufactured by Nisshin Engineering Co., Ltd.
- free crushers manufactured by Nara Machinery Co., Ltd.
- pulp may be crushed in two steps. For example, a first pulverization step of obtaining a pulverized product having a volume-based 50% average particle diameter (D50) of 100 ⁇ m or less measured by a laser diffraction / scattering method, followed by a pulverized product obtained in the first pulverization step.
- a pulverized pulp is produced by a method comprising a second pulverization step of further pulverizing to obtain a pulverized product having a volume-based 50% average particle diameter (D50) of 60 ⁇ m or less measured by a laser diffraction / scattering method.
- the molding resin material of the present invention can be obtained by heat-kneading the above-mentioned crushed pulp product with a thermoplastic resin.
- the blending ratio of the crushed pulp in the resin material for molding is preferably high in order to realize carbon neutrality at a high level, but considering the obtained resin material and the production and strength of the molded article, 10 mass is mass. % Or more and 90% by mass or less, more preferably 30% by mass or more and 80% by mass or less.
- thermoplastic resin used in the present invention is preferably formed into granules in terms of ease of handling, but may be in any form. Further, two or more kinds of thermoplastic resins can be used at the same time. Biodegradable resins with thermoplastics are also included. Further, at the time of kneading the pulp with the crushed product, a compatibilizing resin (compatibility material) which is also a thermoplastic resin may be added for the purpose of improving uniformity and adhesion.
- a compatibilizing resin which is also a thermoplastic resin may be added for the purpose of improving uniformity and adhesion.
- thermoplastic resin examples include polyethylene and polypropylene, but the present invention is not limited to these, and any resin that can be plasticized and molded by heat can be used.
- polyethylene such as LDPE (low density polyethylene) and polypropylene are preferable from the viewpoint of moldability.
- thermoplastic resin examples include, but are not limited to, polylactic acid (PLA), polybutylene succinate, polyethylene succinate, polyglycol, polycaprolactone, polyvinyl alcohol and the like.
- the molding resin material of the present invention preferably contains a compatibilized resin.
- the strength is improved by containing the compatible resin.
- the compatible resin known ones can be used, and examples thereof include, but are not limited to, maleic acid-modified polypropylene (Youmex 1010, manufactured by Sanyo Chemical Industries, Ltd.), Modic (registered trademark) P908 (manufactured by Mitsubishi Chemical Corporation), and the like. Be done.
- the compatible resin has a function of uniformly mixing the roasted product and the thermoplastic resin and enhancing the adhesion.
- the compatible resin is preferably used in an amount of 5 to 15% by mass in the resin material for molding.
- a molded product can be obtained by heat-treating the molding resin material of the present invention.
- the temperature at which the molding resin material of the present invention is heat-treated is usually about 100 to 300 ° C, preferably about 110 to 250 ° C, and particularly preferably about 120 to 220 ° C. be.
- the molded product obtained by the heat treatment can be molded into a desired shape by a conventionally known resin molded product.
- an apparatus used for general resin molding can be used for heat-kneading a pulverized product and a thermoplastic resin.
- a general extruder can be used.
- the molding resin material of the present invention or the molded article obtained by molding the same may contain an organic substance other than the thermoplastic resin and the roasted product and / or an inorganic substance.
- Other components include, for example, alkalis such as sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide; inorganic fillers such as clay, talc, calcium carbonate, myrity, titanium dioxide and zinc oxide; carbon black.
- organic fillers such as glass flakes; dyes or pigments such as red iron oxide, azo pigments, phthalocyanine; dispersants, lubricants, plasticizers, mold release agents, flame retardants, antioxidants (phenolic antioxidants, antioxidants)
- additives for modification such as agents, sulfur-based antioxidants), antistatic agents, light stabilizers, ultraviolet absorbers, metal deactivators, crystallization accelerators (nucleating agents), foaming agents, cross-linking agents, antibacterial agents, etc. Agents and the like can be mentioned.
- the molding resin material of the present invention can be molded according to various purposes and can be used as a substitute for plastic products.
- Molded articles obtained from the molding resin material of the present invention include, for example, trays and the like, automobile parts, interiors such as automobile dashboards, luggage compartments for airplanes, structural members of transportation equipment, housings (housings) for home appliances. ), Electrical equipment parts, cards, various containers such as toner containers, building materials, seedling raising pots, agricultural sheets, writing tools, wood products, household appliances, straws, cups, toys, sporting goods, port parts, building materials, power generation It can be widely applied to machine safety, tools, fishing gear, packaging materials, 3D printer shaped objects, pallets, food containers, etc. When these products are no longer needed, they will be disposed of. For example, even if they are incinerated and emit carbon dioxide, the amount of crushed pulp contained in them is carbon dioxide in the atmosphere. It can be treated as if the carbon content was not increased.
- Example 1 Eucalyptus camaldrensis Eurofia hybrid hardwood bleached kraft pulp dry crusher (Turbomill T250, Freund Turbo Co., Ltd., 14 blades x 4 stages, clearance 2 mm, peripheral speed 108 m / s) was crushed using. The obtained pulverized product was further pulverized using a dry crusher (Turbo Mill T400RS, manufactured by Freund Turbo Co., Ltd., 300 blades x 3 stages, clearance 1 mm, peripheral speed 147 m / s).
- crushed broad-leaved tree bleached kraft pulp and polypropylene (trade name: J107G, made of prime polymer, melt flow rate: 30 g / min) were mixed at a blending ratio of 50:50, and Xplore (manufactured by Leo Lab) was mixed. ), Kneading at 190 ° C. for 6 minutes, heating cylinder at 190 ° C., molding (9bar, 2s-11bar, 0.5s-11bar, 24s), and molding at 40 ° C. to prepare a dumbbell, and then the physical properties were measured.
- Example 2 A molding resin material was produced in the same manner as in Example 1 except that hardwood bleached kraft pulp made from eucalyptus globulous wood chips was used.
- Example 3 A molding resin material was produced in the same manner as in Example 1 except that hardwood bleached kraft pulp made from maple wood chips was used.
- Example 4 A molding resin material was produced in the same manner as in Example 1 except that hardwood bleached kraft pulp made from beech wood chips was used.
- Example 5 A molding resin material was produced in the same manner as in Example 1 except that hardwood bleached kraft pulp made from aspen wood chips was used.
- Example 6 Eucalyptus-Kamaldrensis Eurofia hybrid crushed bleached kraft pulp made from wood chips, polypropylene (trade name: J107G, made of prime polymer, melt flow rate: 30 g / min) and maleic acid-modified polypropylene (trade name:)
- a molding resin material was produced in the same manner as in Example 1 except that Yumex 1010 (manufactured by Sanyo Kasei) was mixed at a blending ratio of 50:40:10.
- Example 1 A resin material for molding was produced in the same manner as in Example 1 except that coniferous bleached kraft pulp made from larch wood chips was used.
- Example 2 A resin material for molding was produced in the same manner as in Example 1 except that the softwood bleached kraft pulp made from the wood chips of Southern Yellow Pine was used.
- the melt flow rate (MFR) of the manufactured resin material for molding was measured according to JIS K 7210. Specifically, the measurement was performed using a melt flow indexer (G-20, manufactured by Toyo Seiki Seisakusho) under the conditions of a measurement temperature of 230 ° C. and a test load of 2.16 kg. Further, using the obtained molding resin material as a dumbbell type test piece (JIS K 7139) and using a precision universal testing machine (“Autograph AG-Xplus” manufactured by Shimadzu Corporation), the test speed was 1 mm / min. The initial distance between the marked lines was 30 mm, and the tensile strength (maximum stress) was measured.
- MFR melt flow rate
- the molding resin material containing the crushed hardwood kraft pulp of the example has an MFR of 4 as compared with Comparative Examples 1 and 2 containing the crushed softwood kraft pulp of the comparative example.
- the fluidity was good, exceeding 0.0 g / 10 min.
- Example 6 to which maleic acid-modified polypropylene was added, the maximum stress was improved. According to the present invention, it is possible to produce a molding resin material having excellent fluidity and capable of injection molding.
- Example 7 As crushed pulp, powdered cellulose (product name: W-50GK, particle diameter 54 ⁇ m, manufactured by Nippon Paper Industries, Ltd.) and polybutylene succinate (trade name: ZM7B01, manufactured by Mitsubishi Chemical Corporation, melt flow rate: 47).
- a molding resin material was produced in the same manner as in Example 1 except that the mixture was mixed with .66 g / 10 min) in a blending ratio of 51:49.
- the maximum stress of this molding material was 38.0 MPa, which was equivalent to the maximum stress (37.4 MPa) of the molding material produced by the compounding ratio of polybutylene succinate 100.
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Abstract
Description
(1) レーザー回折/散乱法で測定した体積基準50%平均粒子径(D50)が100μm以下であるパルプの粉砕物を10~90質量%含有し、さらに熱可塑性樹脂を含有する成形用樹脂材料。
(2) 前記パルプが広葉樹化学パルプである、(1)に記載の成形用樹脂材料。
(3) 前記熱可塑性樹脂がポリオレフィン系樹脂を含む、(1)ないし(2)に記載の成形用樹脂材料。
(4) 前記熱可塑性樹脂がポリプロピレン系樹脂を含む、(1)~(3)のいずれかに記載の成形用樹脂材料。
(5) 前記熱可塑性樹脂が生分解性樹脂を含む、(1)~(4)のいずれかに記載の成形用樹脂材料。
(6) 前記熱可塑性樹脂がポリ乳酸系樹脂を含む、(5)に記載の成形用樹脂材料。
(7) 前記熱可塑性樹脂がポリブチレンサクシネート系樹脂を含む、(5)ないし(6)に記載の成形用樹脂材料。
(8) 相溶化樹脂を5~15質量%含む、(1)~(7)のいずれかに記載の成形用樹脂材料。
(9) 前記広葉樹化学パルプがユーカリ属を原料とする化学パルプである、(2)~(8)のいずれかに記載の成形用樹脂材料。
(10) 前記広葉樹化学パルプが繊維幅10~25μm、壁厚3.0~7.0μmである、(2)~(9)のいずれかに記載の成形用樹脂材料。
(11) パルプを粉砕し、レーザー回折/散乱法で測定した体積基準50%平均粒子径(D50)が100μm以下である粉砕物を得る粉砕工程を有することを特徴とする成形用樹脂材料用のパルプ粉砕物の製造方法。
(12) 前記パルプが広葉樹化学パルプである、(11)に記載の成形用樹脂材料用のパルプ粉砕物の製造方法。
ユーカリ・カマルドレンシスユーロフィアハイブリッドの木材チップを原料とする広葉樹漂白クラフトパルプを乾式粉砕機(ターボミルT250、フロイント・ターボ株式会社製、ブレード14枚×4段、クリアランス2mm、周速108m/s)を使用して粉砕した。得られた粉砕物をさらに乾式粉砕機(ターボミルT400RS、フロイント・ターボ株式会社製、ブレード300枚×3段、クリアランス1mm、周速147m/s)を使用して粉砕した。
ユーカリ・グロビュラスの木材チップを原料とする広葉樹漂白クラフトパルプを使用した以外は、実施例1と同様にして成形用樹脂材料を製造した。
メープルの木材チップを原料とする広葉樹漂白クラフトパルプを使用した以外は、実施例1と同様にして成形用樹脂材料を製造した。
ブナの木材チップを原料とする広葉樹漂白クラフトパルプを使用した以外は、実施例1と同様にして成形用樹脂材料を製造した。
アスペンの木材チップを原料とする広葉樹漂白クラフトパルプを使用した以外は、実施例1と同様にして成形用樹脂材料を製造した。
ユーカリ・カマルドレンシスユーロフィアハイブリッドの木材チップを原料とする漂白クラフトパルプの粉砕物とポリプロピレン(商品名:J107G、プライムポリマー製、メルトフローレイト:30g/min)とマレイン酸変性ポリプロピレン(商品名:ユーメックス1010、三洋化成製)を50:40:10の配合比で混合した以外は実施例1と同様にして成形用樹脂材料を製造した。
カラマツの木材チップを原料とする針葉樹漂白クラフトパルプを使用した以外は、実施例1と同様にして成形用樹脂材料を製造した。
サザンイエローパインの木材チップを原料とする針葉樹漂白クラフトパルプを使用した以外は、実施例1と同様にして成形用樹脂材料を製造した。
クラフトパルプの繊維、壁厚はカヤーニファイバーラボ(メッツォオートメーション社製)で測定した。
クラフトパルプ粉砕物の体積基準50%平均粒子径(D50)はマスターサイザー3000(マルバーン社製)を用いて湿式法で測定した。
製造した成形用樹脂材料のメルトフローレイト(MFR)を、JIS K 7210に準拠して測定した。具体的には、メルトフローインデクサ(G-20、東洋精機製作所製)を用い、測定温度230℃、試験荷重2.16kgの条件で測定した。
また、得られた成形用樹脂材料をダンベル型試験片(JIS K 7139)として、精密万能試験機(島津製作所(株)製「オートグラフAG-Xplus」)を用いて、試験速度1mm/分、初期標線間距離は30mmで、引張強度(最大応力)を測定した。
パルプ粉砕物として粉末状セルロース(製品名:W-50GK,粒子径54μm、日本製紙社(株)製)とポリブチレンサクシネート(商品名:ZM7B01、三菱ケミカル(株)製、メルトフローレイト:47.66g/10min)とを51:49の配合比で混合した以外は、実施例1と同様にして成形用樹脂材料を製造した。この成形材料の最大応力は38.0MPaであり、ポリブチレンサクシネート100の配合比で製造した成形材料の最大応力(37.4MPa)と同等であった。
Claims (12)
- レーザー回折/散乱法で測定した体積基準50%平均粒子径(D50)が100μm以下であるパルプの粉砕物を10~90質量%含有し、さらに熱可塑性樹脂を含有する成形用樹脂材料。
- 前記パルプが広葉樹化学パルプである、請求項1に記載の成形用樹脂材料。
- 前記熱可塑性樹脂がポリオレフィン系樹脂を含む、請求項1ないし2に記載の成形用樹脂材料。
- 前記熱可塑性樹脂がポリプロピレン系樹脂を含む、請求項1~3のいずれかに記載の成形用樹脂材料。
- 前記熱可塑性樹脂が生分解性樹脂を含む、請求項1~4のいずれかに記載の成形用樹脂材料。
- 前記熱可塑性樹脂がポリ乳酸系樹脂を含む、請求項5に記載の成形用樹脂材料。
- 前記熱可塑性樹脂がポリブチレンサクシネート系樹脂を含む、請求項5ないし6に記載の成形用樹脂材料。
- 相溶化樹脂を5~15質量%含む、請求項1~7のいずれかに記載の成形用樹脂材料。
- 前記広葉樹化学パルプがユーカリ属を原料とする化学パルプである、請求項2~8のいずれかに記載の成形用樹脂材料。
- 前記広葉樹化学パルプが繊維幅10~25μm、壁厚3.0~7.0μmである、請求項2~9のいずれかに記載の成形用樹脂材料。
- パルプを粉砕し、レーザー回折/散乱法で測定した体積基準50%平均粒子径(D50)が100μm以下である粉砕物を得る粉砕工程を有することを特徴とする成形用樹脂材料用のパルプ粉砕物の製造方法。
- 前記パルプが広葉樹化学パルプである、請求項11に記載の成形用樹脂材料用のパルプ粉砕物の製造方法。
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