摘要:
A conductive porous material includes a matrix having a sintered compact of an oxide, a communicating opening formed in the matrix, having a small diameter and being permeable to gas and impermeable to substance other than gas, and a conductive layer provided on an internal wall of the communicating opening and receiving a current to generate heat. As conductive material is used, an organic substance adheres on the internal wall of communicating opening. To address this, conductive layer is caused to generate heat to decompose and thus remove the organic substance and thus prevent the communicating opening from clogging.
摘要:
An upper die (1) has a cavity member (6) constituting an inner bottom surface (5) of a cavity (4), and a surrounding member (7). The cavity member (6) is formed of a low adhesion material in accordance with the present invention, and includes a body portion (8) and a surface layer (10) formed on an undersurface (9) of the body portion (8) exposed to a fluid resin. The body portion (8) is formed of a first material of 3YSZ and a second material of ZrN that are mixed at a predetermined ratio. The surface layer (10) is formed of Y2O3 having a low adhesion property with respect to a set resin, and has a thermal expansion coefficient smaller than that of the body portion (8). By bonding the body portion (8) and the surface layer (10) at a high temperature and then cooling them down, compressive residual stress is caused in the surface layer (10) due to a difference in the thermal expansion coefficients thereof, and the compressive residual stress is present in the surface layer (10).
摘要翻译:上模具(1)具有构成空腔(4)的内底面(5)的空腔构件(6)和周围构件(7)。 空腔构件(6)由根据本发明的低粘合材料形成,并且包括主体部分(8)和形成在主体部分(8)的下表面(9)上的表面层(10) 流体树脂。 主体部分(8)由3YSZ的第一材料和以预定比例混合的ZrN的第二材料形成。 表面层(10)由相对于固化树脂具有低粘合性的Y 2 O 3形成,并且具有比体部(8)的热膨胀系数小的热膨胀系数。 通过在高温下接合主体部分(8)和表面层(10),然后将其冷却,由于其热膨胀系数的差异,在表面层(10)中引起压缩残余应力, 压缩残余应力存在于表面层(10)中。
摘要:
A mold surface (6) of an upper mold (1) with which a fluid resin comes into contact has an oxide (3) therein. The oxide (3) contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and an ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface (6), releasability between the cured resin and the mold surface (6) is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface (6) is established. With this evaluation method, a material with high releasability (3) can readily be provided. Further, if the material with high releasability (3) is used for the mold surface (6) of the upper mold (1), a mold for molding a resin having excellent releasability can be obtained.
摘要:
A resin molding die has a molding surface formed of a low adhesion material formed of a solid solution of La—Y2O3 produced from Y2O3 and an other oxide of La2O3. La2O3 contains La, which has an ionic radius larger than Y3+, and is larger in basicity than Y2O3. The low adhesion material contains La2O3 at a predetermined ratio relative to a total of Y2O3 and La2O3. The low adhesion material thus has a large iconic radius contributing to a smaller number of sites per unit area than Y2O3, a larger basicity contributing to a smaller force binding the low adhesion material with a basic substance than Y2O3, and a ratio contributing to shape retention. The low adhesion material thus less adhesive and more shape-retentive than Y2O3 configures the molding surface. A low adhesion material that is less adhesive to a basic substance than Y2O3 is and excellently shape-retentive, and an excellently releasable and shape-retentive resin molding die can thus be obtained.
摘要翻译:树脂成形模具具有由由Y 2 O 3制成的La-Y 2 O 3和La 2 O 3的其它氧化物的固溶体形成的低粘合性材料形成的成型面。 La2O3含有大于Y3 +的离子半径的La,其碱度比Y2O3大。 低粘附性材料相对于Y 2 O 3和La 2 O 3的总量以预定比例含有La 2 O 3。 因此,低粘附性材料具有大的标志性半径,有助于每单位面积比Y2O3更少的位置数,较大的碱度有助于结合低粘合材料与碱性物质比Y2O3更小的力,以及有助于形状保持的比例 。 因此,低粘合性材料因此比Y2O3更少的粘合性和更形状保持性构成了模制表面。 与Y 2 O 3相比,对碱性物质的粘合性较差的低粘合性材料具有良好的保持性,因此可以获得良好的脱模性和形状保持性的树脂成型模具。
摘要:
A mold surface of an upper mold with which a fluid resin comes into contact has an oxide therein. The oxide contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface, releasability between the cured resin and the mold surface is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface is established. With this evaluation method, a material with high releasability can readily be provided. Further, if the material with high releasability is used for the mold surface of the upper mold, a mold for molding a resin having excellent releasability can be obtained.
摘要:
A mold surface (6) of an upper mold (1) with which a fluid resin comes into contact has an oxide (3) therein. The oxide (3) contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and an ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface (6), releasability between the cured resin and the mold surface (6) is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface (6) is established. With this evaluation method, a material with high releasability (3) can readily be provided. Further, if the material with high releasability (3) is used for the mold surface (6) of the upper mold (1), a mold for molding a resin having excellent releasability can be obtained.
摘要:
A low-adhesion material containing a rare-earth element is formed as a layer or a film on a mold surface of a mold for molding a resin. A main component of the low-adhesion material is a rare-earth compound, and Y2O3 is used as an example. A content of the rare-earth compound in the low-adhesion material is not less than 40 percent by volume. Thereby, a mold for molding a resin having excellent releasability can be obtained.
摘要:
A mold surface of an upper mold with which a fluid resin comes into contact has an oxide therein. The oxide contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface, releasability between the cured resin and the mold surface is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface is established. With this evaluation method, a material with high releasability can readily be provided. Further, if the material with high releasability is used for the mold surface of the upper mold, a mold for molding a resin having excellent releasability can be obtained.
摘要:
A conductive porous material includes a matrix having a sintered compact of an oxide, a communicating opening formed in the matrix, having a small diameter and being permeable to gas and impermeable to substance other than gas, and a conductive layer provided on an internal wall of the communicating opening and receiving a current to generate heat. As conductive material is used, an organic substance adheres on the internal wall of communicating opening. To address this, conductive layer is caused to generate heat to decompose and thus remove the organic substance and thus prevent the communicating opening from clogging.
摘要:
A low-adhesion material containing a rare-earth element is formed as a layer or a film on a mold surface of a mold for molding a resin. A main component of the low-adhesion material is a rare-earth compound, and Y2O3 is used as an example. A content of the rare-earth compound in the low-adhesion material is not less than 40 percent by volume. Thereby, a mold for molding a resin having excellent releasability can be obtained.
摘要翻译:将含有稀土元素的低粘合材料作为层或膜形成在用于模制树脂的模具的模具表面上。 低附着材料的主要成分是稀土类化合物,作为实例使用Y 2 O 3 O 3。 低粘合性材料中的稀土类化合物的含量为40体积%以上。 由此,能够得到脱模性优异的树脂成形用模具。