TWI493122B - And a method for manufacturing a plug body for a shock-resistant structure, and a method for manufacturing a plug body for a shock-resistant structure, - Google Patents

Description

Method for producing a plug body for an anti-vibration structure, a plug body for an anti-vibration structure, an anti-vibration structure, a method for producing a plug body for an anti-vibration structure, and a method for producing a plug body for a shock-proof structure

The present invention relates to a plug body for a shock-proof structure used for supporting a vibration-proof device, and a plug body for a shock-proof structure using the plug-body composition, and a stopper for using the earthquake-proof structure Earthquake-proof structure. More specifically, the present invention relates to a plug body composition for a plug body for a shock-proof structure body having improved attenuation performance in a low-distortion region, and a plug body for a shock-proof structure body using the plug body composition. And an anti-vibration structure using the plug body for the earthquake-proof structure.

Moreover, the present invention relates to a method for producing a composition for a plug body of an anti-vibration structure, and a method for producing a plug body for an anti-vibration structure using the composition for a plug body. Specifically, the present invention relates to a method for producing a composition for a plug body, which can provide a plug body for an anti-vibration structure having improved attenuation performance in a low-distortion region, and a shock-proof composition using the plug-body composition. A method of manufacturing a plug body for a structure.

Conventionally, a shock-proof structural system in which a flexible plate such as a rubber sheet or the like and a hard plate such as a steel plate are laminated in a laminated manner is used as a support for an anti-vibration device. In the above-described anti-vibration structure, for example, a hollow portion is formed in the center of the laminate formed of the soft plate and the hard plate, and then a plug body (seismic structure) formed into a uniform composition is press-fitted into the hollow portion. Use the plug body).

Here, the plug body pressed into the laminate formed of the soft plate and the hard plate is plastically deformed when the laminate is shear-deformed with the occurrence of an earthquake, and absorbs the vibration energy. Then, most of the plug body uses a plug body composed entirely of lead. However, lead has a large burden on the environment, and the cost required for disposal is also high. Therefore, in recent years, an alternative material for lead has been used, and it has been attempted to develop a plug body having sufficient attenuation performance, displacement followability, and the like.

Specifically, a plug body using a substitute material of lead has been proposed as a composition for a plug body containing a powder component containing an elastomer component as a highly viscous body and a powder body containing a powder such as iron powder (powder material) A plug body formed by press molding (see, for example, JP-A-2009-133481).

Here, the conventional plug body formed by press-molding the composition containing the elastomer composition and the powdery plug body of the powder exhibits a large deformation, that is, exhibits excellent attenuation with respect to large distortion. Performance and displacement followability. However, as a result of review by the inventors of the present invention, it has been found that the above-mentioned conventional plug body has insufficient attenuation performance at a low distortion region (for example, a region where the shear deformation is 50% to 100%) compared to the lead plug body. There is room to improve the attenuation performance at low distortion regions.

Accordingly, the present invention has been made in an effort to solve the above problems of the prior art, and an object of the invention is to provide a composition for a plug body which can provide a shock-proof structure of a plug body having improved attenuation performance in a low-distortion region. Moreover, an object of the present invention is to provide a plug body for a shock-proof structure using the above composition to improve the attenuation performance at a low distortion region and to use the same The seismic structure of the plug body is used for the seismic structure.

The inventors of the present invention conducted repeated reviews in order to achieve the above objectives. Then, the inventors of the present invention found that a hard resin containing a D hardness (D-type durometer hardness) higher than the elastomer composition by 30 or more is contained in addition to the elastomer composition and the powder containing the elastomer component. The composition is used for the plug body of the earthquake-proof structure, and an earthquake-resistant structure excellent in attenuation performance at a low distortion region can be obtained, and the present invention can be completed.

In addition, as a result of further examination by the inventors of the present invention, it has been found that a composition for a plug body containing an elastomer composition, a powder, and a hard resin does not have a powder shape suitable for press molding depending on the preparation conditions. It is a block (block). In other words, according to the inventors of the present invention, the composition for a plug body containing a hard resin is a bulk material depending on the preparation conditions, and the plug body capable of exhibiting desired properties is formed. Difficult doubts.

Therefore, the inventors of the present invention have made it possible to provide a plug body for an anti-vibration structure which has improved the attenuation performance in a low-distortion region, and to provide a method for producing a plug-body composition having excellent formability, and further intensively Review. Then, the inventors of the present invention found that by modulating the elastomer composition in advance and then kneading the powder and the hard resin, and making the temperature during the kneading a specific temperature range, it is possible to modulate the attenuation at the region where the low distortion is provided. Excellent formability of plug body for shock-proof structure after improved performance The composition of the different plug body is used to complete the present invention.

That is, an object of the present invention is to solve the above problems, and the composition for a plug body of the anti-vibration structure of the present invention is characterized in that: (A) an elastomer composition contains at least an elastomer component; (B) The powder; and (C) the hard resin D, the hardness of which is 30 or more higher than the elastomer composition.

In this way, in addition to the elastomer composition and the powder, a hard resin having a D hardness higher than that of the elastomer composition is added, and a plug body for a vibration-proof structure excellent in attenuation performance at a low distortion region can be obtained. The composition for the plug body.

Further, in the present invention, "D hardness" means the hardness of a D-type durometer measured in accordance with JIS K6253.

Here, it is preferable that the composition for a plug body of the earthquake-proof structure of the present invention has a D hardness of 60 to 90 in the hard resin. When the D hardness of the hard resin is in the range of 60 or more and 90 or less, the attenuation performance in the low distortion region of the plug body for a seismic isolation structure produced using the composition for a plug body can be greatly improved.

Further, the composition for a plug body of the anti-vibration structure of the present invention preferably has a content of the hard resin of 5 to 10% by volume based on the total amount of the elastomer composition, the powder, and the hard resin. When the content of the hard resin is 5% by volume or more based on the total amount of the elastomer composition, the powder, and the hard resin, the low distortion of the plug body for the earthquake-proof structure produced by using the composition for the plug body can be greatly improved. The attenuation performance at the area. also, When the content of the hard resin is 10% by volume or less based on the total amount of the elastomer composition, the powder, and the hard resin, it is possible to suppress the high distortion region of the plug body for the earthquake-proof structure produced using the composition for a plug body. The attenuation performance at the place is reduced.

Furthermore, it is preferable that the composition for a plug body of the earthquake-proof structure of the present invention has an average particle diameter of the hard resin of 200 μm or less. When the average particle diameter of the hard resin added to the composition for a plug body is 200 μm or less, both of a low distortion region and a high distortion region can be obtained (for example, a region where the shear deformation is 50% to 250%). The attenuating performance of the anti-vibration structure is further improved by the composition of the plug body of the plug body.

Further, in the present invention, the "average particle diameter" means a median diameter based on the number measured by the laser-diffraction method based on JIS Z8825-1.

Here, it is preferable that the composition for a plug body of the earthquake-proof structure of the present invention has a softening point of the hard resin of 150 ° C or higher. When the softening point of the hard resin is 150 ° C or more, the temperature dependency of the damping property of the plug body for a seismic isolation structure produced using the composition for a plug body can be reduced.

Further, in the present invention, the "softening point" can be measured based on IIS K7206. In the present invention, the "softening point of the hard resin" means a softening point of the hard resin having the lowest softening point when the composition for a plug body contains a plurality of hard resins having different softening points.

Moreover, it is preferable that the composition for a plug body of the earthquake-proof structure of the present invention has an amorphous shape of the hard resin. It is because of the shape of the hard resin In the case of the amorphous shape, the attenuation performance of the plug body for the earthquake-proof structure made of the composition for the plug body in both the low distortion region and the high distortion region can be further improved.

In the present invention, the term "indefinite" means not only one shape but also a shape having various types of irregularities or protrusions.

In addition, it is an object of the present invention to provide a plug body for an anti-vibration structure according to the present invention, which is characterized in that it is produced by using any of the plug body compositions of the above-described anti-vibration structure. As described above, when the composition for a plug body is used, a plug body for a vibration-proof structure excellent in attenuation performance at a low distortion region can be obtained.

Furthermore, an object of the present invention is to solve the above problems in an advantageous manner, and the anti-vibration structure system of the present invention is formed by alternately laminating a rigid rigid plate and an elastic elastic plate, and has a structure extending in a lamination direction. The laminated body of the hollow portion and the plug body pressed into the hollow portion of the laminated body are characterized by the plug body of the above-described anti-vibration structure for the plug system. As described above, when the plug body for the earthquake-proof structure is used, a shock-proof structure that can exhibit excellent attenuation performance in a low-distortion region can be obtained.

Moreover, an object of the present invention is to solve the above problems. The method for producing a composition for a plug body of the anti-vibration structure of the present invention includes an elastomer composition preparation process for preparing an elastomer composition containing at least an elastomer component. And a kneading process in which a hard resin having a powder hardness of 30 or more higher than that of the elastomer composition is added to the elastomer composition to be kneaded to obtain a composition for a plug body; In the middle, the kneading temperature after the addition of the hard resin is a temperature lower than the softening point of the hard resin. In this way, in addition to the elastomer composition and the powder, a hard resin is added, and a composition for a plug body which can produce a plug body for a vibration-proof structure excellent in attenuation performance in a low-distortion region can be obtained. In addition, when the kneading temperature after the addition of the hard resin in the kneading process is lower than the softening point of the hard resin, the composition for the plug body can be prevented from being in a block shape, and the shock can be easily formed to exhibit the desired performance. The structure uses a composition for a plug body of a plug body. Further, if the kneading process is carried out after the elastomer composition preparation process, since the elastomer composition can be prepared at a higher temperature (temperature exceeding the softening point of the hard resin), the composition for the plug body can be suppressed. In the form of a block, a composition for a plug body to which the components of the elastomer composition are uniformly dispersed is obtained.

Further, in the present invention, the "D hardness" as described above means the hardness of a D-type durometer measured in accordance with JIS K6253.

In the present invention, the "softening point" means a Vicat softening temperature measured in accordance with JIS K7206. In the present invention, the "kneading temperature" means the temperature of the kneaded material in the kneading. In the present invention, the "softening point of the hard resin" means a softening point of the resin having the lowest softening point among the hard resins added in the case where a plurality of hard resins having different softening points are added.

Here, the method for producing a composition for a plug body of the anti-vibration structure of the present invention is preferably in the kneading process, and the powder is divided into a plurality of intermittent or continuous additions to the elastomer composition to be kneaded. Because of When the powder is intermittently or continuously added to the elastomer composition and kneaded, the kneading temperature and the torque during kneading can be suppressed as compared with the case where the powder is added to the elastomer composition at a time and kneaded ( The torque is increased rapidly, so that the dispersion state of the powder in the elastomer composition is good.

Then, the method for producing a composition for a plug body of the anti-vibration structure of the present invention is preferably in the kneading process, and the powder is divided into a plurality of intermittently added to the elastomer composition to be kneaded; After the body is added to the elastomer composition one or more times and kneaded, the hard resin is added to the mixture of the elastomer composition and the powder. This is because if the powder is added to the elastomer composition once or more and kneaded, and then the hard resin is added to the mixture of the elastomer composition and the powder, the kneading temperature after the addition of the hard resin can be suppressed.

In addition, an object of the present invention is to solve the above problems. The method for producing a plug body for an anti-vibration structure according to the present invention includes a press forming process for press forming a plug body using the above-described anti-vibration structure in a mold. A composition for a plug body produced by any of the methods for producing a composition. In this manner, when the composition for a plug body produced by the method for producing a composition for a plug body is used for press molding, a plug body for a vibration-proof structure excellent in attenuation performance at a low distortion region can be obtained.

In the method for producing a plug body for a seismic isolation structure according to the present invention, it is preferable that the composition for a plug body is press-formed at a temperature lower than a softening point of the hard resin in the press molding process. This is because if the composition for the plug body is press-formed at a temperature lower than the softening point, low distortion can be obtained. The plug body of the anti-vibration structure is more excellent in the attenuation performance at the region.

According to the present invention, it is possible to provide a composition for a plug body which can produce an anti-vibration structure for a plug body for a seismic isolation structure excellent in attenuation performance in a low distortion region. Moreover, according to the present invention, it is possible to provide a plug body for a shock-proof structure excellent in attenuation performance in a low-distortion region, and the attenuation performance at a low-distortion region is equal to or higher than that of a shock-proof structure using a lead plug body, and A shock-proof structure that reduces environmental burden.

Moreover, according to the method for producing a composition for a plug body of the anti-vibration structure of the present invention, it is possible to provide a plug body for an anti-vibration structure having improved attenuation performance in a low-distortion region, and a plug having excellent formability can be produced. Body composition. Further, according to the method for producing a plug body for a seismic isolation structure according to the present invention, it is possible to manufacture a plug body for a seismic isolation structure excellent in attenuation performance in a low distortion region.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, the earthquake-proof structure system according to the present invention is used as a support for an anti-vibration device or the like. Moreover, the plug system for a seismic isolation structure according to the present invention is not particularly limited, and can be produced by using the method for producing a plug body for a shock-proof structure according to the present invention. In addition, the composition for a plug body of the anti-vibration structure according to the present invention is not particularly limited as long as it is used for the production of the plug body for the anti-vibration structure, and the composition for a plug body of the anti-vibration structure according to the present invention can be used. Manufacturing method to manufacture.

(earthquake structure)

Here, FIG. 1 shows an example of the earthquake-proof structure of the present invention using the plug body for the earthquake-proof structure of the present invention, which is a cross-section along the extending direction of the plug body for the earthquake-proof structure.

In Fig. 1, a seismic structure 1 having a cross section is formed by alternately laminating a rigid rigid plate 2 and an elastic elastic plate 3, which are provided with a central portion extending in a stacking direction (vertical direction). The laminated body 4 of the cylindrical hollow portion, the cylindrical shock-proof structure body 5 that is press-fitted into the hollow portion of the laminated body 4, and the laminated body 4 and the plug body for the earthquake-proof structure are fixed. The flange plate 6 of both ends (upper end and lower end) of 5. Moreover, the outer peripheral surface of the laminated body 4 of the earthquake-proof structure 1 is covered by the covering material 7.

Then, in the earthquake-proof structure 1, the rigid plate 2 and the elastic plate 3 constituting the laminated body 4 are strongly bonded by, for example, sulfur addition or an adhesive. Further, in the case where the layered body 4 is formed by vulcanization, the vulcanized substance of the unsulfurized rubber composition may be added by vulcanizing the layered body of the rigid plate 2 and the unsulfurized rubber composition. For the elastic plate 3, the formation of the elastic plate 3 and the vulcanization of the rigid plate 2 and the elastic plate 3 are simultaneously performed. Here, as the rigid plate 2, a metal plate such as a steel plate, a ceramic plate, a reinforced plastic plate such as FRP, or the like can be used. On the other hand, as the elastic plate 3, a plate body made of a vulcanized rubber or the like can be used. Further, the laminated body 4 may not be covered with the covering material 7, but the outer peripheral surface of the laminated body 4 is preferably from the viewpoint of preventing deterioration of the laminated body 4 due to oxygen, ozone, ultraviolet rays, or the like. Covered with the covering material 7. Here, as the covering material 7, The same material as the elastic plate 3, such as a vulcanized rubber or the like, can be used.

In the anti-vibration structure 1, when the shear stress in the horizontal direction is received by the vibration, the laminated body 4 and the anti-vibration structure plug body 5 are shear-deformed, thereby effectively absorbing the vibration energy and making the vibration fast. Ground attenuation. Further, in the earthquake-proof structure 1, since the laminated body 4 is configured by alternately laminating the rigid plate 2 and the elastic plate 3, the load is suppressed in the stacking direction (vertical direction).

In the anti-vibration structure 1, the plug body 5 for an anti-vibration structure (which uses the composition for a plug body of the present invention described in detail below) is used, so that excellent attenuation performance can be exhibited in a low-distortion region.

(Composition for plug body)

Hereinafter, the composition for a plug body of the earthquake-proof structure of the present invention will be described in detail. The composition for a plug body of the present invention is characterized in that it is composed of an elastomer composition containing at least an elastomer component, a powder, and a hard resin having a D hardness higher than that of the elastomer composition by 30 or more.

Here, the conventional composition for a plug body containing the elastomer composition and the powder is not used, and the composition for the plug body is added by adding the powder to improve the plug body for the earthquake-proof structure formed by using the plug body composition ( Hereinafter, there is a case where the attenuation property is simply referred to as "plug body". Then, in the conventional composition for a plug body, the elastomer composition corresponds to the sea portion of the island structure, and the powder system corresponds to the island portion of the island structure. However, in the composition for a plug body of the present invention, the stress corresponding to the hardness difference between the elastomer composition and the hard resin is increased by replacing a part of the elastomer composition with a hard resin. Thus, according to this plug with a composition, it is considered to be improved, especially by forming the attenuation performance of the plug body low distortion at a region (in particular weight - distortion hysteresis curve of the slice load Q _d, or slice stress τd). Further, the attenuation performance of the plug body can be improved by increasing the amount of the powder (for example, iron powder) to which the composition for the plug body is added. However, if the amount of the powder is increased, the workability is deteriorated, or the elastic plate (for example, a rubber sheet) located around the plug body is damaged. Therefore, the composition for a plug body of the present invention improves the attenuation performance, particularly the attenuation performance at a low distortion region, by adding a hard resin having a D hardness higher than that of the elastomer composition by 30 or more as described above.

In addition, the plug body for an anti-vibration structure using a composition for a plug body containing an elastomer composition, a powder, and a hard resin is rubbed by the powder when the plug body is deformed by the occurrence of earthquake or the like. The friction between the hard resins, the friction between the powder and the hard resin, and the friction between the powder or the hard resin and the elastomer component attenuate the vibration. Therefore, in the composition for a plug body, in order to increase the friction between the hard resins and the friction between the hard resin and the elastomer component or the powder, the plug body for the earthquake-proof structure using the plug body composition is further improved. The attenuation performance is preferably such that the average particle diameter of the hard resin is 200 μm or less. In other words, in the composition for a plug body, in order to increase the contact area between the hard resins and the contact area between the hard resin and the elastomer component or the powder, the friction between the hard resins and the hard resin and the elastomer component are increased. Or, rubbing with the powder is preferably a hard resin having the above average particle diameter.

<elastomer composition>

The elastomer composition used in the above-described composition for a plug body contains at least an elastomer component, and may further contain an additive such as a reinforcing filler.

Here, as the elastomer component, a rubber which exhibits rubber elasticity at room temperature, such as natural rubber, synthetic rubber or the like, or a thermoplastic elastomer can be used. Among these, as the elastomer component, a rubber such as natural rubber or synthetic rubber is preferably used. This is because rubber such as natural rubber or synthetic rubber is a viscoelastic body. Although it exhibits some elasticity, it has a large plasticity and can follow a large deformation. Further, it will reaggregate to the same state when it is at the origin after vibration. The reason. Moreover, if the elastomer component is rubber (that is, when the elastomer composition is a rubber composition), the attenuation performance of the plug body can be improved, and the durability can be improved. Further, as the elastomer component, more specifically, natural rubber (NR), polyisoprene rubber (IR), polybutadiene rubber (BR), and styrene-butadiene rubber (SBR) are exemplified. , chloroprene rubber (CR), ethylene-propylene rubber, nitrile rubber, butyl rubber, halogenated butyl rubber, propylene rubber, polyurethane, silicone, fluorinated rubber, polysulfide rubber, Haibo Hypalon rubber, ethylene-vinyl acetate rubber, epichlorohydrin rubber, ethylene-methyl acrylate copolymer, styrene elastomer, amine ester elastomer, polyolefin elastomer, and the like. These elastomer components may be used alone or in combination of two or more.

The above elastomer component is at least a part, and preferably all of them are not crosslinked. That is, if the elastomer component is rubber, the rubber is Jiawei did not add sulfur. When the elastomer component is completely crosslinked, the plug body formed using the plug composition containing the elastomer component may be deformed when subjected to large deformation, but the plug may not be changed during deformation. The location of the powder. Therefore, if the elastomer component is completely crosslinked, the plug body may not follow the deformation at a certain limit point, causing the crosslinked elastomer to partially break, or return to the original due to the reaction force of the crosslinked elastomer portion. shape. Then, if the crosslinked elastomer is partially broken, since the position of the plug body returns to the origin, and the plug body cannot return to the original shape, the attenuation performance is gradually lowered, and if the elastomer portion is crosslinked, The reaction force of the plug body will become unsuccessful. On the other hand, if the elastomer component is uncrosslinked, it can follow the deformation, and when the plug body returns to the origin after undergoing a large deformation experience, since the plug body is subjected to hydrostatic pressure as a whole, The plug body can return to its original shape. Then, as a result, the performance equivalent to the initial stage can be maintained for a long period of time. In addition, if the cross-linking point is very small, or if only the surface of the plug body is cross-linked, the plug body can return to the original shape after being deformed. Therefore, in the present invention, "uncrosslinked" means a state in which the crosslinking reaction has not been completely carried out, and a state in which partial crosslinking is also included.

The above elastomer composition preferably further contains a reinforcing filler. Further, in the present invention, the "reinforcing filler" is a material which is reinforced by an elastomer component and which has a strong cohesive force and a binding force with an elastomer component. Then, the reinforcing filler has a bonding force to enhance the elastomer group by being added to the elastomer component The overall viscosity of the object, as a result, can enhance the attenuation performance of the plug.

Further, in general, since the plug body of the earthquake-preventing structure exerts a damping effect by absorbing energy generated by the earthquake (for example, conversion to heat, etc.), the attenuation effect changes as the flow resistance of the plug body becomes larger. Big. On the other hand, when a reinforcing filler is added to the elastomer component, the flow resistance of the elastomer composition becomes large (that is, the flow resistance of the plug body formed using the elastomer composition becomes large. ), a plug body having sufficient attenuation performance, displacement followability, and the like can be obtained.

Here, as the reinforcing filler, carbon black and cerium oxide, more preferably carbon black, are preferred from the viewpoint of enhancing the viscosity of the elastomer composition by interaction with the elastomer component. . Here, as the carbon black, for example, SAF, ISAF, HAF grade, and the like are exemplified, and among these, the surface area of the fine particles such as SAF or ISAF grade is preferably larger. Further, examples of the cerium oxide include wet cerium oxide, dry cerium oxide, and colloidal cerium oxide. These reinforcing fillers may be used alone or in combination of two or more.

The amount of the reinforcing filler to be added is preferably in the range of 60 to 150% by mass based on 100% by mass of the elastomer component. When the amount of the reinforcing filler added to the elastomer composition is less than 60% by mass, the viscosity and flow resistance of the elastomer composition are low, and the attenuation performance of the plug body tends to be insufficient. On the other hand, when the addition amount of the reinforcing filler exceeds 150% by mass, it is difficult to knead, and it is difficult to prepare a uniform elastomer composition, and the repeat stability of the plug body is lowered.

Further, the elastomer composition preferably contains a resin other than a resin (hard resin) having a D hardness higher than that of the elastomer composition, for example, a soft resin having a D hardness lower than that of the elastomer composition. If the elastomer composition contains a soft resin, the attenuation performance of the plug body at the time of large deformation can be improved. Moreover, this soft resin acts as a processing aid at the time of preparation of the composition for a plug body, and can facilitate the kneading of the composition for plugs.

The soft resin preferably has an action as an adhesion-imparting agent. Examples of the soft resin include a phenol resin, a rosin resin, a dicyclopentadiene (DCPD) resin, a dicyclopentadiene-isoprene copolymer, and a C5 system. Petroleum resin, C9 petroleum resin, alicyclic petroleum resin, petroleum resin obtained by copolymerizing C5 fraction and C9 fraction, xylene resin, terpene resin and ketone resin, and denatured resin of these resins. These resins may be used alone or in combination of two or more.

Further, the amount of the soft resin to be added in the elastomer composition is preferably in the range of 20 to 100% by mass based on 100% by mass of the elastomer component. When the amount of the soft resin added is less than 20% by mass, the effect of improving the attenuation performance of the plug body at the time of large deformation is small. On the other hand, if it exceeds 100% by mass, the workability of the elastomer composition is lowered. The situation.

Further, in addition to the elastomer component, the reinforcing filler, and the soft resin, the elastomer composition may be added with an additive which is generally added to an elastomer composition such as an anti-aging agent, a wax, a plasticizer, or a softener. Here, by adding an aging preventive agent to the elastomer composition, even if it is long After the time, the physical properties of the plug can still be suppressed to be small. Further, in order to suppress the physical property change of the formed plug body, it is particularly effective to add an oxidation preventive agent, an ozone deterioration preventive agent, a stabilizer, a flame retardant, and the like together with the aging preventive agent.

Here, as the plasticizer, citric acid, isophthalic acid, adipic acid, tetrahydrofurfuric acid, sebacic acid, sebacic acid, maleic acid, fumaric acid, trimellitic acid, citric acid are exemplified. , derivatives of methylene succinic acid, oleic acid, ricinoleic acid, octadecanoic acid, phosphoric acid, sulfonic acid, etc. (for example, esters); derivatives of propylene glycol, glycerol, epoxy compounds, polymerization It is a plasticizer. These plasticizers may be used alone or in combination of two or more.

Examples of the softening agent (oil) include mineral oil-based softeners such as aromatic oils, naphthenic oils, and paraffinic oils; castor oil, cottonseed oil, linseed oil, rapeseed oil, soybean oil, palm oil, and the like. A vegetable oil softener such as peanut oil, rosin or rosin oil; or a low molecular weight oil such as eucalyptus oil. These softeners may be used alone or in combination of two or more.

<Powder>

The powder system used for the above-mentioned composition for a plug body mainly serves as a material for attenuating properties of the plug body, and specifically, attenuates friction between the powders, friction between the powder and the elastomer component, and powder and hard resin. The vibrational energy generated by friction. Here, the powder system in the present invention means a reinforcing filler and a substance other than the hard resin. Then, the powder includes, for example, metal powder, strontium carbide powder, or the like. Further, if the composition for the plug body does not contain the powder, the attenuation performance of the plug body is greatly lowered, and sufficient attenuation performance cannot be obtained.

As the powder, metal powder is preferred, and the metal powder is preferably less burdensome to the environment. Specifically, as the metal powder, for example, iron powder, stainless steel powder, zirconium powder, tungsten powder, blue copper (CuSn) powder, aluminum powder, gold powder, silver powder, tin powder, tungsten carbide powder, group powder, titanium powder, Copper powder, nickel powder, tantalum powder, iron-nickel alloy powder, zinc powder, molybdenum powder, and the like. These metal powders may be used alone or in combination of two or more. Further, since the metal powder may be a metal oxide powder, a metal compound powder such as a metal oxide powder may be suitably used as the powder. Iron powder is particularly good among these powders. It is because the iron powder is not only cheap, but also has a high breaking strength compared to other metal powders. In addition, since the plug body for the earthquake-proof structure mainly composed of iron powder is not excessively hard and is not excessively brittle, it can exhibit excellent attenuation performance for a long period of time. Further, as the iron powder, although reduced iron powder, electrolytic iron powder, spray iron powder, pure iron powder, cast iron powder, and the like are exemplified, it is preferable to use reduced iron powder among them.

The content of the powder in the composition for a plug is preferably in the range of 50 to 74% by volume, more preferably in the range of 60 to 74% by volume. Further, (hard resin + elastomer composition) / powder (volume ratio) is preferably in the range of 50/50 to 26/74, more preferably in the range of 40/60 to 26/74. If the content of the powder in the composition for the plug body is less than 50% by volume, since the distance between the powders is too wide, the friction of the powders during deformation and the flow resistance between the powder and other components become small, Therefore, the attenuation performance of the plug body may easily become insufficient. On the other hand, if the content of the powder in the composition for the plug body exceeds 74% by volume, the contact between the powders increases, resulting in the weight of the plug body. Reduced durability. Further, when the content of the powder exceeds 74% by volume, it is difficult to sufficiently remove the air from the composition for the plug body when the plug body is formed, resulting in a volume of the plug body being relatively large (the volume in which the air is not mixed) ) a large increase, and the attenuation performance of the plug body is lowered. Further, when the content of the powder in the composition for a plug body is 60 to 74% by volume, the attenuation performance of the plug body can be favorably maintained, and the displacement followability, the repeatability, and the workability are also good.

Here, the particle diameter of the powder is preferably in the range of 0.1 μm to 2 mm, and more preferably in the range of 1 μm to 150 μm. When the particle size of the powder is less than 0.1 μm, it is difficult to handle it by hand. On the other hand, if the particle diameter of the powder exceeds 2 mm, the friction between the powders is reduced, and the effect of attenuating the plug tends to be lowered. Further, when the particle diameter of the powder is 1 μm or more, it is easy to handle by hand, and if the particle diameter of the powder is 150 μm or less, the attenuation performance of the plug body can be sufficiently improved.

Further, the shape of the powder is preferably amorphous. Here, the amorphous shape means not only one shape such as a spherical shape but also a shape having various types of irregularities or protrusions. Although the shape of the powder obtained by pulverizing the bulk or the like is of course indefinite, when the use of the spherical powder is compared, the use of the amorphous powder results in a better attenuation effect. It is considered that if an amorphous powder is used, an effect such as a pinning effect occurs when the powders are mutually rubbed, the powder-elastic component, and the powder-hard resin are compared. When a spherical powder or the like is used, the friction becomes large and the attenuation performance becomes good.

<hard resin>

The composition for a plug body contains a resin (hard resin) having a D hardness higher than that of the elastomer composition by 30 or more.

Thus, by adding a hard resin having a D hardness higher than that of the elastomer composition by 30 or more, the composition for the plug body becomes hard, and the attenuation property at a low distortion region of the plug body can be improved (especially load-distortion). The slice in the hysteresis curve has a load weight Q _d , or a slice stress τd).

Further, the average particle diameter of the hard resin to be added to the composition for a plug body is preferably 200 μm or less. By adding a hard resin having an average particle diameter of 200 μm or less, the friction between the hard resins and the friction between the hard resin and the elastomer component or the powder increases, which not only improves the low distortion region but also improves the hardness. The attenuation performance at high distortion regions.

Here, the D hardness of the hard resin is preferably in the range of 60 to 90 from the viewpoint of further improving the attenuation performance at the low distortion region of the plug body. If the D hardness of the hard resin is in the range of 60 to 90, the composition for the plug body is sufficiently hardened, and the attenuation performance at the low distortion region of the plug body can be greatly improved.

Further, from the viewpoint of further improving the attenuation performance at the low distortion region and the high distortion region, the average particle diameter of the hard resin is preferably 150 μm or less. Further, from the viewpoint of handleability of the hard resin, the average particle diameter of the hard resin is preferably 80 μm or more.

Further, the hard resin to be added to the composition for a plug body is preferably a resin having a softening point of 150 ° C or higher. When the softening point of the hard resin is 150° C. or more, the plug body may generate heat due to deformation, and it may be hard. The resin is still not easily softened, so the plug body can exhibit sufficient attenuation performance. That is, it is because of the temperature dependence which can reduce the attenuation performance of the plug body. Incidentally, in the composition for a plug body, since the content of the elastomer composition is lowered by the addition of the hard resin, the temperature dependency of the attenuation performance of the plug body at the low temperature region can be improved.

Further, the hard resin added to the composition for a plug body preferably has an amorphous shape. In the case where an amorphous hard resin is used, the hard resin acts like a lubricant, even if it is rubbed between the hard resin, the hard resin-elastomer component, and the powder-hard resin. Distortion (shear stress) areas, but still cause sufficient friction between the powders. Further, since the amorphous hard resin is plastically deformed in accordance with the deformation of the plug body in the region of high distortion (large deformation), it contributes to an improvement in the attenuation performance. That is, if an amorphous hard resin is used, the attenuation performance of both the low distortion region and the high distortion region can be improved.

In addition, the amorphous shape means not only one shape such as a spherical shape but also a shape having various types of irregularities or protrusions. Then, the shape of the resin obtained by pulverizing the hard particles of the hard resin or the like is of course amorphous.

Here, as the hard resin, polyethylene (PE), polypropylene (PP), and polystyrene (PS) of a hydrocarbon-based plastic; polyamine (PA) and polyphenylene ether (PPE) of engineering plastics are preferable. ), polyphenylene ether / polystyrene (PPE / PS), poly maple (PSF), polyether oxime (PES), polyimine (PI), polyphenylene sulfide (PPS), polyphenylene ether (PPO) , polydiether ketone (PEEK), polyether quinone imine (PEI) Wait.

Further, the average particle diameter of the hard resins can be adjusted by a conventional method such as crushing or classification.

Then, the content of the hard resin is preferably in the range of 5 to 10% by volume based on the total amount of the elastomer composition, the powder, and the hard resin. When the content of the hard resin is 5% by volume or more based on the total amount of the elastomer composition, the powder, and the hard resin, the composition for the plug body is sufficiently hardened, and the attenuation at the low distortion region of the plug body can be greatly improved. Performance (especially slice stress τd). In addition, when the content of the hard resin is 10% by volume or less based on the total amount of the elastomer component, the powder, and the hard resin, the deterioration of the attenuation performance in the high distortion region of the plug body can be sufficiently suppressed. Further, if the content of the hard resin is too large, the attenuation property at the high distortion region is lowered because the ratio of the elastomer composition in the plug body composition is decreased, resulting in attenuation performance at a high distortion region of the plug body. The discovery of a large amount of soft resin is greatly reduced. Therefore, by hardening the content of the hard resin to about 5 to 10% by volume, the stress (τd) at the low distortion region can be effectively enhanced.

(Method for producing a composition for a plug body)

The composition for a plug body of the anti-vibration structure of the present invention is not particularly limited, except for the use of the elastomer composition, the powder, and the hard resin. For example, a method for producing a plug body composition of the anti-vibration structure of the present invention can be used. And manufactured as follows.

Here, the method for producing a composition for a plug body of the anti-vibration structure of the present invention is characterized by comprising an elastomer group for modulating an elastomer composition a preparation process; and a powder and a hard resin are added to the elastomer composition to be kneaded to obtain a kneading process for the composition for the plug body; wherein the kneading temperature after the addition of the hard resin is the softening point of the hard resin The following temperatures. In an example of the method for producing a composition for a plug body according to the present invention, as shown in Fig. 2, an operation flow when the plug body for a vibration-proof structure is manufactured according to an example of a method for producing a composition for a plug body of the present invention is used. Further, the above-described composition for a plug body was produced as described below.

<Elastomer Composition Modulation Process>

First, in the elastomer composition preparation process, as shown in FIG. 2, the elastomer composition is kneaded by adding various appropriately selected additives as needed, and an elastomer composition is prepared. Further, the kneading of the elastomer component and the additive can be carried out by using a usual kneading device such as a kneader or a Banbury mixer.

Here, in the case of preparing a composition for a plug body containing an elastomer composition, a powder, or a hard resin, it is also conceivable to simultaneously use a raw material (elastic component and additive) of the elastomer composition together with the hard resin and the powder. Put it into the kneading device to mix it. However, the method for producing a composition for a plug body according to the present invention is prepared by preliminarily preparing an elastomer composition in an elastomer composition preparation process, and then kneading the prepared elastomer composition, powder, and hard resin to prepare a composition. The composition for the plug body. In the case where the raw material of the elastomer composition, the hard resin, and the powder are simultaneously introduced into the kneading device, the elastomer component, the additive, the powder, and the hard resin are not uniformly dispersed, and a uniform composition cannot be obtained. The composition of the plug body is due to the composition. That is, since the elastomer composition, the additive, the powder, and the hard resin are not uniformly dispersed in the composition for the plug body, the plug body having the desired attenuation performance cannot be obtained. Further, as described in detail later, in order to suppress the composition for the plug body as a bulk material, the kneading temperature after the addition of the hard resin must be a temperature lower than the softening point of the hard resin, so that the elastomer is kneaded at the same time. In the case of the raw material of the composition and the hard resin, the kneading temperature cannot be sufficiently increased, and the additive cannot be uniformly dispersed in the elastomer component.

Further, the kneading temperature in the elastomer composition preparation process preferably exceeds the softening point of the above-mentioned hard resin, and is preferably lower than the temperature at which the elastomer component or the additive does not significantly deteriorate due to heat. This is because if the kneading temperature is higher than the softening point of the hard resin, the elastomer composition can be kneaded at a high temperature before the elastomer composition and the hard resin are kneaded, and the elasticity in which the additive is uniformly dispersed in the elastomer component can be obtained. The reason for the body composition. Further, since the kneading temperature is lower than the temperature at which the elastomer component or the additive is significantly deteriorated, the composition for a plug body having desired properties can be prepared. Further, when the soft resin is added to the elastomer component and kneaded, the kneading temperature is preferably at least the softening point of the soft resin. This is because if the kneading temperature is equal to or higher than the softening point of the soft resin, the soft resin can be uniformly dispersed in the elastomer component. Further, the "softening point of the soft resin" means the softening point of the soft resin having the highest softening point when a plurality of soft resins having different softening points are added.

Here, the kneading temperature can be measured by using a thermometer provided in the kneading machine or directly measuring the internal temperature of the kneaded material (elastomer composition) discharged from the kneading device by a thermometer. Further, the kneading temperature can be controlled by a conventional method of changing the operating conditions (for example, the number of rotations) of the kneading machine.

<mixing process>

Next, in the kneading process, as shown in FIG. 2, a powder (for example, iron powder) and a hard resin are added to the elastomer composition prepared in the above-described elastomer composition preparation process, and kneaded to prepare a powder. A composition for the plug body. Further, the kneading of the elastomer composition, the powder, and the hard resin can be carried out by using a usual kneading device such as a kneader or a Banbury mixer. Further, the hard resin can be pulverized by, for example, a pellet of a hard resin to a particle diameter of 100 to 300 μm by a conventional method.

In addition, in the kneading process, components other than the elastomer composition, the powder, and the hard resin may be input and kneaded as needed.

Here, in the kneading process, it is necessary to set the kneading temperature after the addition of the hard resin to a temperature lower than the softening point of the hard resin. Further, the kneading temperature after the addition of the hard resin is preferably lower than the softening point of the hard resin, and more preferably 20 ° C or more lower than the softening point of the hard resin. When the kneading temperature after the addition of the hard resin is higher than the softening point of the hard resin, the composition for the plug body obtained by the poor compatibility between the hard resin and the elastomer composition becomes Blocky sake. That is, it is because if the temperature is higher than the softening point of the hard resin When the composition for the plug body obtained by cooling is cooled, since the hard resin which has been softened is hardened by agglomeration, the composition for the plug body becomes an inappropriate block material at the time of press molding. reason. Incidentally, when the composition for the block-shaped plug body is press-formed, since a plug body of a desired shape cannot be formed, or a large amount of voids are contained in the plug body, it is impossible to obtain a desired performance. Plug body. Further, in the plug body composed of the composition for press-molding the block-shaped plug body, the friction between the hard resin and the powder is not improved, and the attenuation performance at the low-distortion region cannot be sufficiently enhanced.

Incidentally, if the kneading temperature is made low, the deterioration of the elastomer component can be suppressed, or the cooling takes too much time to cause a decrease in productivity.

Further, in the kneading process, the elastomer composition, the powder, and the hard resin may be simultaneously put into the kneading device to be kneaded. However, from the viewpoint of obtaining a composition for a plug body having a more uniform composition, it is preferable to divide the powder into a plurality of intermittently intermittently, or to continuously input for a certain period of time or more, and more preferably to divide into a plurality of times. Investigate intermittently. In the case where a large amount of powder is put into the kneading device at the same time, the torque and the kneading temperature during the kneading increase rapidly, which makes it difficult to control the kneading temperature, and the powder is not easily used in the plug body. The composition is uniformly dispersed.

Here, the powder is intermittently divided into a plurality of times (for example, n times), and although the amount of each input may be any amount, as shown in FIG. 2, it is preferable to equalize each time (one at a time) /n) Put in powder. It is because if the powder is fed at an equal ratio, the control of the kneading temperature and the like is more appropriate. Easy, and the powder will be evenly dispersed.

Further, in the case where the powder is intermittently introduced into a plurality of times, it is preferred to add the powder to the mixture of the elastomer composition and the powder after the powder is mixed once or more. In the case where the powder is added, the kneading temperature is likely to increase. However, if the powder is added to the elastomer composition one time or more and then kneaded, and then the hard resin is added, the kneading temperature after the addition of the hard resin can be suppressed. Further, the input of the hard resin is preferably carried out before the n-1th injection of the powder, and more preferably at the same time as the second injection of the powder. This is because if the kneading time after the input is longer, the hard resin is more uniformly dispersed in the composition for the plug body.

Here, from the viewpoint of suppressing the increase in the kneading temperature after the addition of the hard resin and the uniform dispersion of the hard resin in the composition for the plug body, the hard resin is preferably used when the kneading time of the kneading process is T. It starts from the mixing process and is put between 0.2T and 0.5T.

Further, the measurement and control of the kneading temperature in the kneading process can be performed in the same manner as the elastomer composition preparation process. Further, the kneading condition of the kneading process is preferably in the range of 20 to 40 rpm and the temperature is about 100 °C. In order to suppress the decrease in the viscosity of the elastomer component, it is preferred that the number of rotations is lower. Further, in the kneading process, it is preferred to open the pressure and mix it without pressure before discharging the kneaded composition. By kneading without pressurization, the composition does not become hard, and the composition can be easily taken out from the kneading device.

(plug body for shockproof structure)

The plug body for a seismic isolation structure according to the present invention is characterized in that it is produced by using the above-described composition for a plug body. Then, the plug body for the anti-vibration structure is not only an attenuation performance at a low distortion region, but also has excellent attenuation performance at a high distortion region.

(Manufacturing method of plug body for earthquake-proof structure)

The plug body for the earthquake-proof structure of the present invention is not particularly limited, and can be produced by using the method for producing a plug body for a shock-proof structure of the present invention.

Here, the method for producing a plug body for an anti-vibration structure according to the present invention is characterized in that it comprises a press forming process for press-molding a composition for a plug body produced by the above-described production method in a mold.

<Pressure forming process>

In the press forming process, the powdery plug body composition taken out from the kneading device is moved to a molding device (cylindrical mold), and then pressed from both sides or one side with a pusher to pressurize ( Pressing the composition of the plug body in the mold to form the plug body. Further, the embossing press used for the composition for pressurizing the plug body can be used by a user who is usually in the technical field. Further, the molding pressure is not particularly limited and may be 0.7 t/cm ² or more.

Here, in the press forming process, the temperature (forming temperature) at the time of forming the plug body is not particularly limited, but is preferably in the range from room temperature to the softening point of the hard resin, and more preferably less than the softening point of the hard resin. Specifically, the molding temperature can be, for example, a range of normal temperature to 150 °C. This is because if the molding temperature is made high, the voids (residual air) in the formed plug body can be reduced, and the attenuation performance of the plug body can be further improved. On the other hand, it is because if the forming temperature is higher than that of the hard resin At the softening point, the hard resin is softened at the time of press molding, and there is a possibility that a plug having a desired attenuation property cannot be formed.

Further, the forming temperature may be, for example, by the inside of a cylindrical mold or a pusher, or the inner peripheral surface of the cylindrical mold or the front end portion of the pusher (that is, in contact with the surface of the formed plug body) Part) Set up with a thermometer to measure. Further, the molding temperature can be controlled by a conventional method such as heating of a cylindrical mold.

The embodiment of the present invention has been described with reference to the drawings, but the composition for a plug body of the anti-vibration structure of the present invention, the plug body for an anti-vibration structure, and the anti-vibration structure are not limited to the above examples, and may be used in the present invention. The composition for the plug body of the anti-vibration structure, the plug body for the earthquake-proof structure, and the anti-vibration structure are appropriately changed.

In addition, the method for producing a plug body for a vibration-proof structure of the present invention and the method for producing a plug body for a vibration-proof structure are not limited to the above-described examples, and a method for producing a plug body composition for a vibration-proof structure of the present invention and The manufacturing method of the plug body for the earthquake-proof structure is further changed as appropriate.

Example 1

Hereinafter, the present invention will be described in more detail by way of [Example 1], but the present invention is not limited to the following examples.

(Examples 1 to 5, Conventional Example 1)

First, a kneading machine was used to prepare the elastomer composition of the prescription added as shown in Table 1.

Next, use a kneading machine to mix the volume ratio shown in Table 1. Elastomer composition, iron powder as powder (particle size = 40 μm, amorphous reduced iron powder), polypropylene (PP), polyethylene (PE) or polyphenylene ether (PPO), and the plug body is prepared. Composition.

Finally, the obtained plug body composition was press-formed at a temperature of 100 ° C and a pressure of 1.3 ton / cm ² to obtain a plug body for a cylindrical shock-proof structure having a diameter of 45 mm.

Then, regarding the obtained plug body for the cylindrical shock-proof structure, the attenuation performance was evaluated in the following manner. The results are shown in Table 1.

<Attenuation performance>

A layer composed of a rigid rigid plate [iron plate] having a cylindrical hollow portion and having an outer diameter of 225 mm and an elastic elastic plate [sulfurized rubber plate (G' = 0.4 MPa)] is laminated in an alternately layered manner. The hollow body of the integrated body is pressed into the plug body for the earthquake-proof structure, and the earthquake-proof structure of the structure shown in FIG. 1 is produced. Further, the volume of the plug body for the earthquake-proof structure before press-in is 1.01 times the volume of the hollow portion of the laminate.

Then, a dynamic tester is used for the shock-proof structure to be produced, and a shear deformation in which a predetermined displacement is generated by vibration in a horizontal direction while a reference surface pressure is applied in the vertical direction is used. In addition, the vibration displacement system is such that the total thickness of the laminate is 100%, the distortion is 50 to 250%, the vibration frequency is 0.33 Hz, and the vertical surface pressure is 10 MPa. Fig. 3 shows the relationship between the displacement (δ) in the horizontal direction and the horizontal load (Q) of the anti-vibration structure. In this test, first, the slice load Q _d at the distortions of 50%, 100%, 200%, and 250% (the horizontal load value at the displacement 0) is obtained. In addition, the section load Q _d is the load weight Q _d1 , Q _d2 at the point where the hysteresis curve intersects the vertical axis, and is given by: Q _d =(Q _d1 +Q _d2 )/2

To calculate. Furthermore, using the section load Q _d and the sectional area S of the plug body, the following formula: τd=Q _d /S

To calculate the slice stress τd (the horizontal stress value at the displacement 0). The larger the T _d , the better the attenuation performance of the plug body for the earthquake-proof structure.

*1 Natural rubber: unsulphurized, RSS#4 *2 Polybutadiene rubber: low heterogeneity, unsulphurized, Asahi Kasei "Jean NF35R"*3 Carbon black: ISAF, TOKAI CARBON "SEAST 6P"*4 Soft resin: Japan's ZEON "Jernefa cited 100M" (soft hardness can not measure D hardness), Nippon Petrochemical "Nippon stone NEOPOLYMER 140" (soft can not measure D hardness), Maruzon Petrochemical "Muluka" Leeds M-890A" (too soft to measure D hardness); "Jeane method": "Nippon Stone NEOPOLYMER 140": "Maluka Lez M-890A" = 40:40:20 (mass ratio)* 5 Plasticizer: Dioctyl adipate (DOA)*6 Other additives: zinc oxide, octadecanoic acid, aging preventive agent [Ansett and 6C] made by Sumitomo Chemical Co., Ltd. Towox 1"], zinc oxide: octadecanoic acid: aging inhibitor: wax = 4:5:3:1 (mass ratio) *7 Polypropylene (PP): "Optical POLYPRO" manufactured by Idemitsu Petrochemical Co., Ltd. , D hardness = 70 *8 Polyethylene (PE): "MIPELON" manufactured by Mitsui Petrochemical Co., Ltd., D hardness = 65 * 9 Polyphenylene ether (PPO): "SX-101" manufactured by Asahi Kasei Chemicals Co., Ltd., D hardness = 75 *10 iron Powder: particle size = 40μm, amorphous reduced iron powder

It can be understood from Table 1 that it is more flexible by using D hardness added. The composition of the plug body of the resin having a bulk composition higher than 30 can improve the attenuation performance at the low-lying region of the plug body and increase the τd at the low-lying region of the anti-vibration structure.

Example 2

Hereinafter, the present invention will be described in more detail by way of [Example 2], but the present invention is not limited to the following examples.

(Examples 6 to 13, Comparative Example 1)

First, a kneading machine was used to prepare the elastomer composition of the prescription added as shown in Table 2.

Next, using a kneading machine, the elastomer composition, the iron powder as a powder (particle diameter = 40 μm, amorphous reduced iron powder) and the tables 3 to 4 are mixed by the volume ratio shown in Tables 3 to 41. The hard resin is used to modulate the composition for the plug body.

Finally, the obtained plug body composition was press-formed at a temperature of 100 ° C and a pressure of 1.3 ton / cm ² to obtain a plug body for a cylindrical shock-proof structure having a diameter of 45 mm.

Then, regarding the obtained plug body for the cylindrical anti-vibration structure, the attenuation performance was evaluated in the same manner as described above at a temperature of 20 °C. Further, the D hardness of the elastomer composition and the hard resin was measured in accordance with JIS K6253. The results are shown in Tables 3 to 4 and Figure 4.

(Conventional Example 2)

An elastomer composition, a plug composition, and a cylindrical shockproof material were produced in the same manner as in Example 8 except that the elastomer composition and the iron powder were kneaded in a volume ratio shown in Table 3, except that the hard resin was not used. structure Body plug body. Then, the attenuation performance of the plug body for a seismic isolation structure was evaluated in the same manner as in the eighth embodiment. The results are shown in Table 3 and Figure 4.

*11 Natural rubber: unsulphurized, RSS#4 *12 Polybutadiene rubber: low heterogeneity, unsulphurized, Asahi Kasei "Jie'an NF35R"*13 Carbon black: ISAF, TOKAI CARBON "SEAST 6P"*14 Polyester polyol: Japan's ZEON "Jernefa cited 100M" (D hardness: 20 (although too soft to measure, but barely measured value), softening point: 80 ° C) * 15 cyclopentadiene: Maruzen Petrochemical "ESCOREZ 8180" (D hardness: 12 (although too soft to measure, but barely measured value), softening point: 80 ~ 92 ° C) * 16 C8-C10 aromatic hydrocarbon fraction: New Japan Petroleum Chemical system "NEOPOLYMER 140" (D hardness: 10 (although too soft to measure, but barely measured value), softening point: 145 ° C) * 17 zinc oxide; octadecanoic acid; aging preventer: Sumitomo Chemical "Anstai and 6C"; Wax: "Puro Rotox 1" made by Nippon Oil; Zinc Oxide: Octadecyl Acid: Anti-aging Agent: Wax = 4:5:3:1 (mass ratio)

In addition, "D hardness" is measured based on JIS K6253, and "softening point" is measured based on JIS K7206.

*18 Polypropylene (PP): "Prime Polypro" manufactured by PRIME POLYMER, D hardness = 69, softening point = 165 °C *19 Polyphenylene ether (PPO): "SX-101" manufactured by Asahi Kasei Chemicals Co., Ltd., D hardness = 75 , softening point = 160 ° C * 20 polyether oxime (PES): BASF "E2010GP", D hardness = 76, softening point = 285 ° C * 21 iron powder: made by POWDER TECH, particle size = 40 μm, amorphous reduced iron powder *22 Polyvinyl chloride (PVC): "SEKISUI PVC TS" manufactured by Tokuyama Sekisui Co., Ltd., D hardness = 63, softening point = 70 °C

In addition, "D hardness" is measured based on JIS K6253, and "softening point" is measured based on JIS K7206. Further, the "average particle diameter" is measured by a laser-diffraction method based on JIS Z8825-1.

With respect to each of the anti-vibration structures, Tables 3 to 4 and FIG. 4 showing the relationship between the displacement δ (distortion) in the horizontal direction and the slice stress τd can be seen that the plug bodies for the anti-vibration structures of Examples 6 to 13 are compared with In the plug body for the anti-vibration structure of Conventional Example 2 and Comparative Example 1, the attenuation performance at the low distortion region is improved. Moreover, it can be seen that the plug bodies for the earthquake-proof structures of Examples 8 to 13 have higher attenuation performance at all distortion regions than the plug bodies for the earthquake-proof structures of Examples 6 to 7.

<Evaluation of Temperature Dependence of Attenuation Performance>

The plug body for the anti-vibration structure of the eighth embodiment and the plug body for the anti-vibration structure of the conventional example 2 were evaluated for the attenuation performance in the same manner as described above except that the test temperature was changed to that shown in Table 5. Then, about The slice stress τd at 100% distortion was evaluated by the slice stress τd at a test temperature of 20 ° C of 100. The results are shown in Table 5.

As can be seen from Table 5, the plug body for the earthquake-proof structure of the eighth embodiment has a lower temperature dependency than the plug body for the earthquake-proof structure of the conventional example 2.

Example 3

Hereinafter, the present invention will be described in more detail by way of [Example 3], but the present invention is not limited to the following examples.

(Examples 14 to 20)

First, the elastomer composition (the elastomer composition preparation process) of the prescription shown in Table 6 was prepared under the conditions shown in Table 7 using a kneading machine.

Next, using an kneading machine, the elastomer composition, the iron powder as a powder (particle diameter = 40 μm, amorphous reduced iron powder), and the hard material shown in Table 7 were kneaded in the volume ratio and conditions shown in Table 7. The resin is used to prepare a composition for a plug body (kneading process). In addition, the iron powder was divided into four times and fed into the kneading machine in equal amounts each time. Also, it will be pulverized to a particle size of 100 to 300 μm. The hard resin is put into the kneading machine at the same time as the second injection of the iron powder.

Finally, the obtained plug body composition was press-formed at a temperature of 100 ° C and a pressure of 1.3 ton / cm ² to obtain a plug body for a cylindrical shock-proof structure body having a diameter of 45 mm (pressure forming process). Further, in the examples 14 to 16, the plug body for the cylindrical earthquake-proof structure was not formed.

Then, regarding the obtained plug body for the cylindrical anti-vibration structure, the attenuation performance was evaluated in the same manner as described above at a temperature of 20 °C. Further, regarding the composition for a plug body, the shape and the formability were evaluated by the following methods. Further, the D hardness of the elastomer composition and the hard resin was measured in accordance with JIS K6253. The results are shown in Table 7.

(Comparative Example 2)

An elastomer composition, a plug composition, and a cylinder were produced in the same manner as in Example 17 except that the elastomer composition and the iron powder were kneaded in a volume ratio and a condition shown in Table 7 without using a hard resin. A plug body for the shock-proof structure. Then, in the same manner as in Example 17, the attenuation performance of the plug body for a seismic isolation structure and the shape and formability of the composition for a plug body were evaluated. The results are shown in Table 7.

<Shape of composition for plug body>

The shape of the composition for the plug body obtained was evaluated by visual observation. Then, when it is a block having a diameter of 30 mm or more, it is evaluated as "blocky", and if a block having a diameter of 30 mm or more is not seen, it is evaluated as "powdered".

<Formability of composition for plug body>

Try a cylindrical anti-vibration structure with a diameter of 160mm and a height of 120mm. When forming a plug body for a body, if the porosity of the formed plug body is 3.5% or less, it is "○ (good)", and if the void ratio exceeds 3.5%, it may not be formed into a cylindrical shape. In the case of "X (bad)".

Furthermore, "porosity" means a structure used for the shock of the plug body of the plug body for producing a theoretical composition gravity (ρ _A) and the difference between the actual vibration structure with a specific gravity (ρ _B) of the plug body (ρ _A -ρ _B ), divided by the theoretical specific gravity (ρ _A ) of the composition for a plug body used for the manufacture of the plug body for a shock-proof structure, and expressed as a percentage (={(ρ _A -ρ _B )/ρ _A } × 100%).

*22 Natural rubber: unsulphurized, RSS#4 *23 Styrene-butadiene rubber: Asahi Kasei "ASAPRENE 6500"*24 Polybutadiene rubber: low heterogeneity, unsulphurized, Asahi Kasei "Jean NF35R" *25 Carbon black: ISAF, TOKAI CARBON "SEAST 6P" *26 Polyester polyol: Japan's ZEON "Jernefa cited 100M" (D hardness: 20 (although it is too soft to measure, but barely measured value) ), softening point: 80 ° C) * 27 cyclopentadiene: Maruzen Petrochemical "ESCOREZ 8180" (D hardness: 12 (although too soft to measure, but barely measured value), softening point: 80 ~ 92 °C)*28 C8-C10 aromatic hydrocarbon fraction: NEOPOLYMER 140, manufactured by Nippon Petrochemical Co., Ltd. (D hardness: 10 (although it is too soft to measure, but barely measured), softening point: 145 ° C)* 29 Zinc Oxide; Octadecanic Acid; Aging Preventing Agent: Suspension Chemical "Anstai and 6C"; Wax: "Nippon Petroleum""Puro Rotox 1"; Zinc Oxide: Octadecanic Acid: Aging Prevention Agent: wax = 4:5:3:1 (mass ratio)

In addition, "D hardness" is measured based on JIS K6253, and "softening point" is measured based on JIS K7206.

*30 Low Density Polyethylene (LDPE): "LDPD 1050" manufactured by Tokyo Printing Ink, D hardness = 65, softening point = 110 °C *31 High Density Polyethylene (HDPE): Mitsubishi Chemical "Hipeon", D hardness =69, softening point = 140 ° C *32 Polyphenylene ether (PPO): "SX-101" manufactured by Asahi Kasei Chemicals Co., Ltd., D hardness = 75, softening point = 160 ° C * 33 Polyether oxime (PES): BASF system "E2010GP", D hardness = 76, softening point = 285 °C *34 Iron powder: manufactured by POWDER TECH, particle size = 40 μm, amorphous reduced iron powder

As is clear from Table 7, the attenuation performance at the low distortion region of the plug body for the earthquake-proof structure of Examples 17 to 20 is superior to that of the plug body for the earthquake-proof structure of Comparative Example 2. Further, as is clear from Table 7, the composition for a plug body of Examples 14 to 16 was a block shape, and the formability was poor.

According to the present invention, it is possible to provide a composition for a plug body which can provide an anti-vibration structure for a plug body for a shock-proof structure body having improved attenuation performance in a low-distortion region. Further, according to the present invention, it is possible to provide a plug body for a seismic isolation structure which is excellent in attenuation performance at a low distortion region.

Moreover, according to the present invention, it is possible to provide a plug body for an anti-vibration structure which has improved the attenuation performance in a low-distortion region, and is capable of producing a composition for a plug body having excellent formability. Further, according to the present invention, it is possible to manufacture a plug body for a seismic isolation structure excellent in attenuation performance at a low distortion region.

1‧‧‧Anti-seismic structure

2‧‧‧Rigid board

3‧‧‧Elastic board

4‧‧‧Layer

5‧‧‧Seismic body plug body

6‧‧‧Flange plate

7‧‧‧Covered timber

Fig. 1 is a cross-sectional view showing an example of a vibration-proof structure using a plug body for a representative earthquake-proof structure according to the present invention.

FIG. 2 is an explanatory view showing an operation flow when the plug body for a seismic isolation structure is manufactured by the method for producing a plug body for a typical earthquake-proof structure according to the present invention.

3 is a graph showing a relationship between a horizontal displacement (δ) and a horizontal load (Q) in a seismic isolation structure using a plug body for a seismic isolation structure.

4(a) and 4(b) are graphs showing the influence of the difference in the average particle diameter of the hard resin on the attenuation performance of the plug body for the earthquake-proof structure.

1‧‧‧Anti-seismic structure

2‧‧‧Rigid board

3‧‧‧Elastic board

4‧‧‧Layer

5‧‧‧Seismic body plug body

6‧‧‧Flange plate

7‧‧‧Covered timber

Claims (13)

A composition for a plug body of an anti-vibration structure, comprising: an elastomer composition containing at least an elastomer component; a powder; and a hard resin having a D hardness higher than that of the elastomer composition by 30 or more. The composition for a plug body of the anti-vibration structure according to the first aspect of the invention, wherein the hard resin has a D hardness of 60 to 90. The composition for a plug body of the anti-vibration structure according to the first aspect of the invention, wherein the content of the hard resin is 5 to 10% by volume based on the total amount of the elastomer composition, the powder and the hard resin. The composition for a plug body of the earthquake-proof structure according to the first aspect of the invention, wherein the hard resin has an average particle diameter of 200 μm or less. The composition for a plug body of the earthquake-proof structure according to the first aspect of the invention, wherein the hard resin has a softening point of 150 ° C or more. The composition for a plug body of the earthquake-proof structure according to the first aspect of the invention, wherein the shape of the hard resin is amorphous. A plug body for an anti-vibration structure, which is produced by using a composition for a plug body of the anti-vibration structure according to any one of claims 1 to 6. An anti-vibration structure comprising: a laminated body formed by alternately laminating a rigid rigid plate and an elastic elastic plate, and having a hollow portion extending in a lamination direction; and a plug body Pressing into the hollow portion of the laminate; The plug system is the plug body for the anti-vibration structure of claim 7 of the patent application. A method for producing a composition for a plug body of an anti-vibration structure, comprising: an elastomer composition preparation process for preparing an elastomer composition containing at least an elastomer component; and a kneading process for comparing the powder to the D hardness A hard resin having an elastomer composition of 30 or more is added to the elastomer composition to be kneaded to obtain a composition for a plug body; wherein, in the kneading process, a kneading temperature after the hard resin is added is a softening of the hard resin Point the temperature below. The method for producing a composition for a plug body of an anti-vibration structure according to claim 9, wherein in the kneading process, the powder is divided into a plurality of intermittent or continuous additions to the elastomer composition for kneading. . The method for producing a composition for a plug body of an anti-vibration structure according to claim 10, wherein in the kneading process, the powder is divided into a plurality of intermittently added to the elastomer composition for kneading; After the powder is added to the elastomer composition one or more times and kneaded, the hard resin is added to the mixture of the elastomer composition and the powder. A method for producing a plug body for an anti-vibration structure, comprising a press forming process for press-forming a mold in a mold, using a plug of a shock-proof structure according to any one of claims 9 to 11. A composition for a plug body produced by the method for producing a body composition. The method for producing a plug body for an anti-vibration structure according to claim 12, wherein in the press forming process, the plug composition is press-formed at a temperature lower than a softening point of the hard resin.