JP2011178877A - Process for manufacturing charcoal-containing resin, charcoal-containing resin, molded product, process for manufacturing carbonized molded product and carbonized molded product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a process for manufacturing a charcoal-containing resin excellent in mechanical strengths which can increase the content of a carbonized product, a charcoal-containing resin, a molded product, a process for manufacturing a carbonized molded product, and a carbonized molded product. <P>SOLUTION: The process for manufacturing a charcoal-containing resin comprises melt-kneading a biomass carbonized product and a resin and, if necessary, water added thereto to form a charcoal-containing resin. The charcoal-containing resin is produced by the manufacturing process and the molded product is composed of the charcoal-containing resin. It is preferred that the charcoal-containing resin contains 50-90 pts.mass biomass carbonized product based on 100 pts.mass sum of the biomass carbonized product and the resin or the biomass has a fibrous structure, The molded product is composed of the charcoal-containing resin. Furthermore, the process for manufacturing a carbonized molded product comprises heat-treating the molded product composed of the charcoal-containing resin in the state to restrict the supply of oxygen and the carbonized molded product is produced by the manufacturing process. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for producing a charcoal-containing resin, a charcoal-containing resin, a molded body, a method for producing a carbonized molded body, and a carbonized molded body.

  In place of conventional plastic materials that use fossil resources as the main raw material, the use of biomass plastics (bioplastics) that use biomass (biological resources) as the main raw material has become widespread. In addition, a material development in which a plastic material made from fossil resources and biomass are combined has been developed (see, for example, Patent Document 1). However, there are limitations in terms of performance (low mechanical strength, etc.) and application (high cost), and currently they are used only in limited fields.

  In recent years, as part of global warming countermeasures, the use of materials that are conscious of the amount of emitted carbon dioxide has been advanced. For example, promotion of reuse of recyclable materials, development of plant-derived recycled material plastics, and the like can be mentioned. One idea is to combine plant-based materials with plastics and suppress the increase in carbon dioxide emissions while maintaining the performance as a material. This can be said to be a carbon dioxide reduction measure based on the concept of “carbon neutral” that carbon dioxide discharged from plant material is equivalent to carbon dioxide absorbed by the plant material. From this point of view, materials obtained by combining kenaf bast fibers and plastics are used in automobile interior materials (see, for example, Patent Document 2) and building materials (see, for example, Patent Document 3). However, this concept of carbon neutral does not increase the amount of carbon dioxide from the present time, or attempts to suppress the increase as much as possible, and does not contribute to carbon dioxide reduction.

  Plants that have absorbed carbon dioxide release the carbon dioxide by burning or rotting. Carbon dioxide circulates between the atmosphere and plants over a span of decades and, as mentioned above, does not contribute to the reduction of carbon dioxide as a result. However, carbon dioxide is fixed on the ground surface for a long time by carbonizing thinned wood, forest residue, endwood, etc. made of plants grown by absorbing carbon dioxide in the atmosphere and using it effectively without burning. be able to. There is an idea to promote carbonization of plants from such an idea. Plant carbonization materials have been used for a long time in Japan, and a typical example is charcoal used as fuel. Charcoal has a gas adsorption function and has been used as an adsorbent. As a highly functional material from a completely different concept, there is also carbon fiber obtained by carbonizing synthetic fiber. It is clear that if the carbonized material can be used semi-permanently in many directions and in large quantities, it can greatly contribute to carbon dioxide reduction. In order to be able to use carbonized materials semipermanently, in many directions, and in large quantities, the strength, workability, and functionality of the materials must be at least inferior to conventional materials and have additional characteristics. It is. Moreover, from the viewpoint of contribution to carbon dioxide fixation, it is necessary that the carbonized material has a high filling rate in the material. On the other hand, in order to be used in a large amount, the workability is low. Must be excellent.

  Until now, in order to carbonize plants and use them as materials, composite materials of carbonized materials and resins have been proposed. Charcoal of woody materials such as charcoal has excellent adsorption performance due to porosity, so composite materials with resin have been proposed mainly for deodorizing function, but those that improve the mechanical strength of composite materials Not yet proposed. For example, a carbonaceous material-containing resin composition containing wood chip carbide powder, a resin, and a surfactant is disclosed, but the upper limit of the content of wood chip carbide powder is as low as 33% (see, for example, Patent Document 4). . On the other hand, although a technique for compounding charcoal with a thermoplastic resin is also disclosed, only a coloring effect is described as an effect, and its content is low, and no examination such as improvement of mechanical strength has been made. (For example, refer to Patent Document 5).

Japanese Patent Laid-Open No. 06-345944 Japanese Patent Laid-Open No. 2005-200470 JP 2004-143401 A Japanese Patent Laid-Open No. 11-043611 JP 2008-222755 A

  An object of the present invention is to provide a carbon-containing resin production method, a carbon-containing resin, a molded body, a carbonized molded body manufacturing method, and a carbonized molded body that have excellent mechanical strength and can increase the carbide content. is there.

It has been found that the above-described problems can be solved by the present invention described below.
[1] A method for producing a charcoal-containing resin, comprising melting and kneading a biomass carbide and a resin into a charcoal-containing resin,
[2] A method for producing a charcoal-containing resin, comprising melting and kneading a biomass carbide, a resin, and water into a charcoal-containing resin,
[3] The method for producing a charcoal-containing resin according to the above [1] or [2], wherein 50 to 95 parts by mass of the carbide of biomass is contained with respect to a total of 100 parts by mass of the carbide of biomass and the resin. ,
[4] The method for producing a charcoal-containing resin according to any one of [1] to [3], wherein the biomass has a fiber structure,
[5] The method for producing a charcoal-containing resin according to any one of [1] to [4], wherein the resin is a thermoplastic resin,
[6] A charcoal-containing resin produced by the production method according to any one of [1] to [5] above,
[7] A molded body comprising the charcoal-containing resin according to [6] above,
[8] A method for producing a carbonized molded body obtained by heat-treating the molded body according to [7] above in a state where oxygen supply is restricted,
[9] A carbonized molded body produced by the production method described in [8] above.

  According to the present invention, it is possible to provide a method for producing a charcoal-containing resin, a charcoal-containing resin, a molded product, a method for producing a carbonized molded product, and a carbonized molded product that have high mechanical strength and can increase the content of carbides.

  Biomass in the present invention refers to organic resources derived from renewable organisms (plants, animals, etc.) excluding fossil resources (oil, coal, etc.). Specifically, plant-derived biomass includes aquatic biomass composed of algae and aquatic plants in the water, weeds and straws, herbaceous biomass composed of agricultural crops, woody biomass derived from trees, and animal-derived biomass.

  The herb, which is a herbaceous biomass that can be used in the present invention, refers to a plant that is not as large as a tree and does not have a thick and hard trunk. For example, straw, bamboo, sugar cane, corn, rice straw, straw, straw, tea bowl, kenaf, Asa, flax, Abaca, cotton, mulberry, mitsumata, gambi, etc. can be mentioned. The woody biomass refers to general hardwoods and conifers, and examples include thinned wood, forest residue, millwood, sawdust, sawdust, bark, building waste, pulp, and paper.

  Animal-derived biomass generally refers to animal carcasses, powders, etc., but animal-derived biomass that can be used in the present invention includes biocellulose made from acetic acid bacteria, squirt sac, etc. Can do.

  The biomass carbide in the present invention is obtained by carbonizing the biomass into a carbide. When heated in a state in which the supply of oxygen is restricted, the organic polymer compound shifts to a stable structure composed of bonds having a high carbon ratio. For example, when wood, which is a kind of a complex of organic polymer compounds, is heated in a state where oxygen supply is limited, first, a heat treatment up to 200 ° C. causes a change from a polymer to a low molecule, and between 160 and 500 ° C. Thus, cellulose, hemicellulose, lignin and the like, which are constituent elements, are decomposed. Furthermore, carbonization occurs at 500 to 1800 ° C. to become charcoal. Carbonization treatment for biomass is also performed in the same manner. As the biomass carbide used in the present invention, a biomass obtained by carbonization in a temperature range of 160 to 500 ° C. is preferably used.

  Examples of the carbonizing apparatus include, but are not particularly limited to, a charcoal kiln, blistering, a moving carbonization furnace, a screw furnace, a stirring type fluidized carbon furnace, a black charcoal kiln, and the like. Further, the processing conditions are not limited at all.

  The biomass in the present invention is preferably a biomass having a fiber structure. The fiber structure means that the aspect ratio (fiber length / fiber diameter) of the biomass before carbonization treatment is 10 or more, and even after carbonizing the biomass having this fiber structure into a carbide, the aspect ratio is It is kept and becomes a carbide having a fiber structure.

  In the present invention, the biomass carbide is kneaded with the resin in powder form. The biomass of the biomass is not lump-like in shape due to its raw material, and is often in the form of a lump. Since the shape is too large as it is, it is not suitable for kneading, so it must be pulverized. As a means for pulverization, for example, a general pulverizer such as a crusher type, a mill type, a grinding type, or a cutter type can be used. In general, since charcoal has high hardness, it is preferable to first pulverize roughly with a crusher type powerful pulverizer and then pulverize with a mill type, grinding type, or cutter type fine pulverizer. Further, the shape of the powdered carbide is not particularly limited, and may be spherical, elliptical, chestnut-shaped, needle-shaped, or the like or a mixture thereof.

  The resin in the present invention is not particularly limited, and synthetic resins, natural resins and the like can be used as appropriate. For example, synthetic resins include phenolic resins, epoxy resins, melamine resins, urea resins (urea resins), unsaturated polyester resins, alkyd resins, polyurethane resins, thermosetting polyimide resins, etc., high-density polyethylene resins Polyethylene resins consisting of medium density polyethylene resin, low density polyethylene resin, polypropylene resin, polyvinyl chloride resin, polystyrene resin, polyvinyl acetate resin, polytetrafluoroethylene resin, acrylonitrile butadiene styrene resin, acrylonitrile styrene resin, acrylic resin , Polyamide resin, polyacetal resin, polycarbonate resin, modified polyphenylene ether resin, polybutylene terephthalate resin, polyethylene terephthalate resin, cyclic polyolefin resin, poly E double sulfide resins, polysulfone resins, polyether sulfone resins, acrylate polymer resin, polyether ether ketone resin, a thermoplastic resin such as polyamide-imide resin. Examples of the natural resin include natural rubber, rosin, shellac, straw, dummar gum, mastic, copal, balsam and the like.

  In the present invention, a thermoplastic resin is preferably used. By using a thermoplastic resin, it becomes easier to perform a molding process of a thin object such as a film or sheet of a molded body made of the charcoal-containing resin of the present invention.

  A biodegradable resin can also be used as the thermoplastic resin. For example, specific examples include polymeric polysaccharides, microbial polyesters, aliphatic polyesters, and more specifically, polylactic acid resin, polycaprolactone resin, polybutylene succinate adipate resin, polyethylene succinate resin, polyethylene. Succinate carbonate resin, polybutylene succinate resin, polybutylene adipate terephthalate resin, polyhydroxyalkanoate (eg, poly (3-hydroxybutyric acid) (PHB), poly (3-hydroxyvaleric acid) (PHV)), lactone resin And polyester resins obtained from low molecular weight aliphatic dicarboxylic acids and low molecular weight aliphatic diols, cellulose acetate-based composites, modified starch-modified polyvinyl alcohol composites, and other composites.

  Various additives can be appropriately added to the charcoal-containing resin of the present invention. Additives include compatibilizers, antioxidants, heat stabilizers, lubricants, mold release agents, plasticizers, UV absorbers, light stabilizers, pigments, dyes, antistatic agents, conductivity-imparting agents, dispersants, Additives such as transparent nucleating agents, antibacterial agents, antifungal agents, and flame retardants can be used alone or in combination of two or more, but are not limited thereto.

  The charcoal-containing resin of the present invention is characterized by melt-kneading a biomass carbide, a resin, and water. As the kneading means, it is preferable to use a high-speed stirring device provided with a rotating blade rotating at high speed in the stirring chamber. During the kneading, water is converted into water vapor and a high pressure state is obtained, so it is preferable that the sealing chamber has a high sealing property. Can happen. Therefore, the stirring chamber is preferably provided with a mechanism such as a mechanical seal or a labyrinth seal that can adjust the pressure when the internal pressure increases excessively.

  It is preferable that a plurality of rotating blades provided in the stirring chamber are disposed on a rotating shaft connected to a motor as a driving source and are in a rotatable state. The shape of the rotary blade is not particularly limited, and any shape such as a rectangular shape, a knife shape, or a saw shape may be used, but a rectangular rotary blade is preferable. Further, the number of rotating blades arranged on the rotating shaft is not particularly limited, and the mounting angle of the rotating blades on the rotating shaft is not particularly limited.

  The stirring chamber is preferably provided with a temperature sensor and a pressure sensor, and the rotating shaft is preferably provided with a torque meter. With these measuring devices, the kneading state can be grasped more specifically and the processing time can be determined.

  Specific examples of the kneading apparatus include a high-speed stirring apparatus equipped with a stirring chamber described in International Publication No. 2004/076044 pamphlet, and a SUNDS De-filterer. A general high-speed stirring device such as a Henschel mixer (registered trademark) may be independently modified to add a pressure adjustment mechanism or a torque meter.

  The melt kneading in the present invention will be described. The melt kneading of the present invention is performed at a temperature higher than the melting temperature of the resin. At that time, water may be added. The water added together becomes water vapor and fills the stirring chamber, and the pressure in the stirring chamber rises to a high pressure state. That is, in the method for producing a charcoal-containing resin of the present invention, the biomass carbide and the resin may be melt-kneaded in a high-temperature and high-pressure steam atmosphere. As a means for bringing the stirring chamber to a temperature equal to or higher than the melting temperature of the resin, heat may be applied from the outside, but more preferably, the temperature of biomass carbide and resin, that is, the mixture, is increased by the shearing force and striking force of the rotating blades. It is preferable to do. A preferable temperature is 120 ° C. or higher, more preferably 140 ° C. or higher.

  The high-pressure state is realized by increasing the temperature in the stirring chamber and turning water into steam, but it is preferable that the stirring chamber is filled with high-temperature steam (heated steam) to be in a high-pressure state. As a high pressure state during melt kneading, the stirring chamber is preferably in a saturated water vapor pressure state of water, but may be in a pressure state of at least 0.2 MPa or more. This water vapor improves the compatibility between the carbide and the resin and increases the dispersibility of the carbide. As a result, the strength physical properties of the molded article of the present invention can be increased.

  In the present invention, it is preferable to knead while giving a high shear force to the material to be kneaded with the rotary blades having various shapes described above. Specifically, the inside of the stirring chamber is caused by shear heat generated by the rotation of the rotary blades. It is preferable that a high shearing force is applied by the rotating blades rotating at a high speed enough to reach a high temperature state. Naturally, it depends on the mechanism, shape, capacity, number of blades, etc. of the apparatus, but specifically, it is preferable that the rotation speed of the rotary blades is 2000 rpm or more.

  When the charcoal-containing resin of the present invention is kneaded in a high-temperature and high-pressure steam atmosphere and then taken out from the kneading apparatus, it is in an irregular flake state. For this reason, when it is put into the hopper of the molding machine in the next molding process, the condition of entering the molding machine may be deteriorated. Therefore, the flake-shaped charcoal-containing resin of the present invention taken out from the kneading apparatus may be formed into a pellet shape. As a means for forming into a pellet shape, a general extruder may be used, or a pelleter that is simply pressed and hardened without applying heat.

  In the charcoal-containing resin of the present invention, it is preferable that 50 to 95 parts by mass of biomass charcoal is contained with respect to 100 parts by mass in total of the carbide and resin of biomass. When the biomass content of biomass is within this range, the mechanical strength of the molded body made of the charcoal-containing resin of the present invention is further improved, and the anisotropy of the mechanical strength is further reduced.

  In the method for producing the charcoal-containing resin of the present invention, it is preferable to add 5 to 30 parts by mass of water with respect to 100 parts by mass in total of the carbide of the biomass and the resin. When the amount of water is less than 5 parts by mass, the carbide of biomass may be scattered during charging into the kneading apparatus, and when the amount of water exceeds 30 parts by mass, it takes time to steam the water during melt-kneading. In some cases, work efficiency at the time of manufacture may be reduced.

  The charcoal-containing resin of the present invention can be molded to form a molded body. As the molding method, various molding methods such as injection molding, profile extrusion molding, blow molding, T-die molding, and rotational molding can be used.

  The carbonized molded body of the present invention can be obtained by heat-treating the molded body made of the charcoal-containing resin of the present invention in a state where the supply of oxygen is restricted. By the heat treatment, the resin contained therein is carbonized, but the carbides constituting the molded body change its structure, so that the affinity between the carbides improves and integrates so that crystal growth occurs. Thus, the carbonized molded body of the present invention can exhibit more excellent mechanical properties.

  The state in which oxygen is limited in the present invention may be a state in which the inside of the apparatus for performing the carbonization treatment is replaced with an inert gas such as nitrogen gas, or even in a state in which the oxygen concentration in the apparatus is reduced by a vacuum pump or the like. Well, there is no particular limitation, and the device is in a state close to a sealed state, and air (oxygen) is not supplied from the outside during carbonization.

  The preferable temperature of the carbonization treatment in preparing the carbonized molded body is 200 to 1000 ° C., more preferably, the first stage of 200 to 500 ° C., then the second stage of 500 to 1000 ° C. and two kinds of temperatures. It is preferable to process in two stages depending on conditions. The carbonization time varies depending on the carbonization temperature, but is preferably 12 to 36 hours, and more preferably 12 to 24 hours. In the case of performing carbonization over two stages, it is preferable that the first stage of carbonization at a low temperature is performed for 24 to 36 hours, and the second stage of carbonization at a high temperature is performed for 12 to 24 hours.

  EXAMPLES Next, although an Example demonstrates this invention still in detail, this invention is not limited to these at all.

Example 1
As biomass charcoal, cedar charcoal with an average particle size of 2 mm is prepared. Biomass charcoal (cedar charcoal) / resin (Nippon Polypro's thermoplastic resin (polypropylene), trade name: Novatec (registered trademark) PP BC8) = 45 parts by mass / 55 parts by mass After preliminary mixing, the mixture was put into a stirring chamber of a batch-type closed kneading apparatus (manufactured by M & F Technology Co., Ltd.). In addition, the pressure chamber is attached to the stirring chamber of the batch type closed kneader. Thereafter, the rotating blades were rotated at a rotational speed of 2700 rpm. After the rotational torque value of the motor reached the maximum value, it began to decrease, and the motor was switched off 3 seconds after it showed the minimum value and turned upward, and the rotation of the rotating blades was stopped. The temperature inside the stirring chamber during melt mixing was 220 ° C. Thereafter, the charcoal-containing resin of the present invention was taken out from the stirring chamber.

(Example 2)
As biomass charcoal, cedar charcoal with an average particle size of 2 mm is prepared. Biomass charcoal (cedar charcoal) / resin (Nippon Polypro's thermoplastic resin (polypropylene), trade name: Novatec (registered trademark) PP BC8) / Water = 45 parts by mass / 55 parts by mass / 15 parts by mass After preliminary mixing, the mixture was put into a stirring chamber of a batch type closed kneader (manufactured by M & F Technology Co., Ltd.). In addition, the pressure chamber is attached to the stirring chamber of the batch type closed kneader. Thereafter, the rotating blades were rotated at a rotational speed of 2700 rpm. Simultaneously with the start of rotation, water vapor leaked from the pressure adjusting mechanism, but after 30 seconds, the leakage stopped, and the mixing in the stirring chamber proceeded while maintaining a high pressure state. 30 seconds after the leakage of water vapor to the outside stops, the rotational torque value of the motor reaches the maximum value and then starts to decrease. The rotation of the rotating blade was stopped. The temperature inside the stirring chamber during melt mixing was 250 ° C. and the pressure was 2.0 MPa. Thereafter, the charcoal-containing resin of the present invention was taken out from the stirring chamber.

(Example 3)
Biomass carbide (cedar charcoal) / resin (manufactured by Nippon Polypro Co., Ltd., thermoplastic resin (polypropylene), trade name: Novatec (registered trademark) PP BC8) / water = 50 parts by mass / 50 parts by mass / 5 parts by mass The charcoal-containing resin of the present invention was obtained in the same manner as in Example 2 except that it was prepared as described above.

Example 4
Biomass carbide (cedar charcoal) / resin (manufactured by Nippon Polypro Co., Ltd., thermoplastic resin (polypropylene), trade name: Novatec (registered trademark) PP BC8) / water = 70 parts by mass / 30 parts by mass / 10 parts by mass The charcoal-containing resin of the present invention was obtained in the same manner as in Example 2 except that it was prepared as described above.

(Example 5)
Biomass carbide (cedar charcoal) / resin (Nippon Polypro Co., Ltd. thermoplastic resin (polypropylene), trade name: Novatec (registered trademark) PP BC8) / water = 70 parts by mass / 30 parts by mass / 15 parts by mass The charcoal-containing resin of the present invention was obtained in the same manner as in Example 2 except that it was prepared as described above.

(Example 6)
Biomass carbide (cedar charcoal) / resin (Nippon Polypro Co., Ltd. thermoplastic resin (polypropylene), trade name: Novatec (registered trademark) PP BC8) / water = 70 parts by mass / 30 parts by mass / 30 parts by mass The charcoal-containing resin of the present invention was obtained in the same manner as in Example 2 except that it was prepared as described above.

(Example 7)
A charcoal-containing resin of the present invention was obtained in the same manner as in Example 4 except that the resin was changed to polyethylene (a product name: Nipolon Hard (registered trademark) 5700, manufactured by Tosoh Corporation) which is a thermoplastic resin.

(Example 8)
The resin was changed to a novolak type phenolic resin (product name: BRP590P, manufactured by Showa Polymer Co., Ltd.), which is a thermosetting resin, and 5 parts by mass of hexamethylenetetramine as a curing agent was added to 55 parts by mass of the resin. A charcoal-containing resin of the present invention was obtained in the same manner as in Example 4 except that.

Example 9
Biomass carbide (cedar charcoal) / resin (Nippon Polypro Corp. thermoplastic resin (polypropylene), trade name: Novatec (registered trademark) PP BC8) / water = 80 parts by mass / 20 parts by mass / 10 parts by mass The charcoal-containing resin of the present invention was obtained in the same manner as in Example 2 except that it was prepared as described above.

(Example 10)
In the same manner as in Example 5, except that the rotation speed of the rotary blade was 1500 rpm, the pressure adjusting mechanism was adjusted, the temperature at the time of melt mixing was 110 ° C., and the pressure was 0.15 MPa. A charcoal-containing resin was obtained.

(Example 11)
In the same manner as in Example 5, except that the rotational speed of the rotary blade was 1800 rpm and the pressure adjustment mechanism was adjusted so that the temperature during melt mixing was 120 ° C. and the pressure was 0.20 MPa. A charcoal-containing resin was obtained.

(Example 12)
Biomass carbide (cedar charcoal) / resin (Prime Polymer thermoplastic resin (polypropylene), trade name: Prime Polypro (registered trademark) PP BC8) / water = 95 parts by mass / 5 parts by mass / 15 parts by mass A charcoal-containing resin of the present invention was obtained in the same manner as in Example 2 except that it was prepared as described above.

(Example 13)
Biomass carbide (cedar charcoal) / resin (Prime Polymer thermoplastic resin (polypropylene), trade name: Prime Polypro (registered trademark) PP BC8) / water = 97 mass parts / 3 mass parts / 15 mass parts A charcoal-containing resin of the present invention was obtained in the same manner as in Example 2 except that it was prepared as described above.

(Comparative Example 1)
A resin composition was obtained in the same manner as in Example 2 except that cedar charcoal, which is a carbide of biomass, was changed to cedar powder having an average particle diameter of 2 mm.

(Example 14)
Using the charcoal-containing resin produced in Example 1, a square member having a width of 100 mm and a thickness of 4 mm was extruded with an extruder and cut into a length of 300 mm. After processing for 12 hours at 450 ° C. in a hydrogen / nitrogen mixed atmosphere using a continuous reduction furnace, the processing temperature was raised to 900 ° C. for 24 hours to obtain a carbonized article of the present invention.

(Example 15)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 2 was used.

(Example 16)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 3 was used.

(Example 17)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 4 was used.

(Example 18)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 5 was used.

(Example 19)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 6 was used.

(Example 20)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 7 was used.

(Example 21)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 8 was used.

(Example 22)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 9 was used.

(Example 23)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 10 was used.

(Example 24)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 11 was used.

(Example 25)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 12 was used.

(Example 26)
A carbonized molded body of the present invention was obtained in the same manner as in Example 14 except that the charcoal-containing resin prepared in Example 13 was used.

(Comparative Example 2)
A carbonized molded article was produced in the same manner as in Example 14 except that the charcoal-containing resin produced in Comparative Example 1 was used, but the molded article collapsed after heating.

(Bending elastic modulus of bending elastic modulus)
A plate (width 100 mm × thickness 4 mm × length 2000 mm) was extruded by an extrusion molding machine (trade name: PCM30, manufactured by Ikegai Co., Ltd.) using the cellulose-containing thermoplastic resin prepared in Examples 1 to 13 and Comparative Example 1. Molded. Next, a test piece was cut out from the produced plate. Each of the five test pieces was measured according to JIS K7171, and the average value was taken as the bending elastic modulus and bending strength. The results are given in Table 1. In any case, the charcoal-containing resin of the present invention of the present invention exhibited high bending elastic modulus and bending strength.

(Bending elastic modulus of bending elastic modulus)
Test pieces were cut out from the carbonized molded bodies produced in Examples 14 to 26. Each of the five test pieces was measured according to JIS K7171, and the average value was taken as the bending elastic modulus and bending strength. The results are given in Table 2. In any case, the carbonized molded body of the present invention exhibited high bending elastic modulus and bending strength.

  The present invention is, for example, functional building materials such as termites, rats, microorganisms such as wood and building materials that are not damaged by corrosion caused by organisms harmful to building materials, civil engineering and building materials, especially in soil with high humidity, underwater, indoors, outdoors. It can be used for facilities. Moreover, it can utilize as foundations or frame parts, such as solar power / thermopower generation, wind power generation, and geothermal power generation, as an outdoor structure. Furthermore, it can be used for structures such as outdoor signs such as traffic signs.

Claims (9)

  A method for producing a charcoal-containing resin, comprising melting and kneading a biomass carbide and a resin into a charcoal-containing resin.   A method for producing a charcoal-containing resin comprising melt-kneading a biomass carbide, a resin, and water into a charcoal-containing resin.   3. The method for producing a charcoal-containing resin according to claim 1, wherein 50 to 95 parts by mass of the biomass carbides are contained with respect to 100 parts by mass in total of the biomass carbides and the resin.   The method for producing a charcoal-containing resin according to claim 1, wherein the biomass has a fiber structure.   The said resin is a thermoplastic resin, The manufacturing method of the charcoal containing resin in any one of Claims 1-4.   The charcoal-containing resin manufactured with the manufacturing method in any one of Claims 1-5.   The molded object which consists of charcoal containing resin of Claim 6.   A method for producing a carbonized molded body, wherein the molded body according to claim 7 is heat-treated in a state where supply of oxygen is restricted.   A carbonized molded body produced by the production method according to claim 8.