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1.发明公开
公开(公告)号：EP0418808A2
公开(公告)日：1991-03-27
申请号：EP90117921.8
申请日：1990-09-18
IPC分类号： H01F1/053
CPC分类号： H01F1/0533 , C08K3/08 , C08K2201/01 , C08L15/00
摘要： A flexible magnetic blend composition is provided which is comprised of high energy rare earth magnetic particles in a flexible high temperature resistant and oil resistant polymer binder. The binder system preferably comprises a highly saturated nitrile rubber (HSN) or a polymer alloy of the same in which a HSN is the major polymer and also contains additives which are compatible with processing, subsequent electron beam curing, and final product performance. The binder system is highly loaded, usually from about 50 to about 70 volume percent, with the high energy rare earth magnetic particles, which can produce bonded magnets with a maximum energy product of at least 2.5 megagauss-oersteds, a remenance, B r of at least 3400 gauss, a coercive force, Hc, of at least 2900 oersteds and an intrinsic coercivity, Hci, of at least 5000 oersteds. The process for production of this system involves the binder system and rare earth magnetic particles being mixed and then formed into a final geometry before being cured by high voltage electron beam radiation. The electron beam curing in the solid state fixes dimensional stability, magnetic properties, and oil, solvent and chemical resistance of the part even when exposed to subsequent hostile temperature environments of 100°C or higher. Further, the HSN binder system reduces oxidation of the rare earth magnetic particles from subsequent hot air aging when compared to conventional nitrile elastomer binder systems. Any off geometry parts or trim produced in the process prior to radiation curing can be recycled through processing several times without fear of premature cure.
摘要翻译： 柔性磁性共混物组合物以柔性耐高温和耐油聚合物粘合剂提供的所有其由高能量的稀土磁性粉末。 粘合剂体系优选包括高饱和丁腈橡胶（HSN）或相同的聚合物合金，其中A是HSN的主要聚合物，因此包含添加剂，其与处理，随后电子束固化，和最终产品的性能兼容。 粘合剂体系是高负荷底栖，通常从约50至约70％（体积），与高能量的稀土磁性颗粒，能产生粘结磁铁与至少2.5兆高斯 - 奥斯特的最大能量积，一个remenance，的溴 至少3400高斯，矫顽力，HC，至少2900奥斯特和禀矫顽力，HCl，至少5000奥斯特的。 生产该系统的过程涉及所述粘合剂体系和稀土磁性颗粒被混合，然后制成的最终几何形状由高电压电子束辐射固化前。 在固体状态下修复尺寸稳定性，磁特性，和油，即使暴露在100
℃或更高敌对随后的温度的环境中的部分的溶剂和耐化学性的电子束固化。 此外，HSN粘合剂体系减少从随后的热空气老化稀土磁性颗粒的氧化。当相对于传统的腈弹性体粘合剂系统。 任何几何关部分或在此过程中辐射固化之前修剪产生可通过几次处理，而不用担心过早固化的被回收。 -
2.发明公开Compression molded flame retardant and high impact strength ultra high molecular weight polyethylene composition 失效压缩成型阻燃剂和高冲击强度超高分子量聚乙烯组合物
公开(公告)号：EP0414110A3
公开(公告)日：1992-04-08
申请号：EP90115611.7
申请日：1990-08-15
CPC分类号： B32B27/08 , B32B27/12 , B32B27/18 , B32B27/32 , B32B2262/101 , B32B2307/3065 , B32B2307/558 , B32B2323/043 , C08K3/32 , C08K7/14 , Y10S428/921 , Y10T428/24994 , Y10T428/252 , Y10T428/31913 , Y10T428/31917 , C08L23/06
摘要： Impact resistant and flame retardant polymer composition, slab-like rectangular solid made of said composition, and composite laminate article having at least one layer of said composition. Composition is preferentially compression molded using a blended particulate feed of relatively high bulk. The polymer composition comprises a maximum of 86 volume percent of ultra high molecular weight polyethylene (UHMWPE), a minimum of 8 volume percent of a flame retardant additive or mixture thereof, and a minimum of 6 volume percent of chopped reinforcing fibers, all volumes referring to the densified (molded) state. In addition the bulk volume of the chopped reinforcing fibers, as measured by a tapped density test, must be a minimum of 27 percent of the final molded volume of the composition (BVPF equal to or greater than 27). The maximum volume % loading of the additives is limited by the requirement that the notched Izod impact strength is a minimum of 7 ft.-lb per inch width. The preferred flame retardant additive is essentially a water insoluble form of ammonium polyphosphate having a water solubility not exceeding 1 gram per 100 grams of water, and the preferred reinforcing fibers are chopped glass fibers about 1/8 to 1/4" inch in length. A significant flame retardant improvement without sacrifice in impact strength is achieved if a thin compressible non-woven fiberglass veil is applied to the top of the particulate feed prior to molding the slab-like solid. The composite layer has first and third layers of essentially rigid compounded high molecular polymers above described, and a second or middle elastomer layer, which is also preferentially flame retarded.
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3.发明公开Magnetic dispersions of rare earth magnetic particles with high magnetic energy product in flexible highly saturated nitrile rubber and methods of processing the same 失效具有高磁性能量产品的稀土磁性颗粒在柔性高饱和氮化橡胶中的磁性分散及其加工方法
公开(公告)号：EP0418808A3
公开(公告)日：1991-12-11
申请号：EP90117921.8
申请日：1990-09-18
IPC分类号： H01F1/053
CPC分类号： H01F1/0533 , C08K3/08 , C08K2201/01 , C08L15/00
摘要： A flexible magnetic blend composition is provided which is comprised of high energy rare earth magnetic particles in a flexible high temperature resistant and oil resistant polymer binder. The binder system preferably comprises a highly saturated nitrile rubber (HSN) or a polymer alloy of the same in which a HSN is the major polymer and also contains additives which are compatible with processing, subsequent electron beam curing, and final product performance. The binder system is highly loaded, usually from about 50 to about 70 volume percent, with the high energy rare earth magnetic particles, which can produce bonded magnets with a maximum energy product of at least 2.5 megagauss-oersteds, a remenance, B r of at least 3400 gauss, a coercive force, Hc, of at least 2900 oersteds and an intrinsic coercivity, Hci, of at least 5000 oersteds. The process for production of this system involves the binder system and rare earth magnetic particles being mixed and then formed into a final geometry before being cured by high voltage electron beam radiation. The electron beam curing in the solid state fixes dimensional stability, magnetic properties, and oil, solvent and chemical resistance of the part even when exposed to subsequent hostile temperature environments of 100°C or higher. Further, the HSN binder system reduces oxidation of the rare earth magnetic particles from subsequent hot air aging when compared to conventional nitrile elastomer binder systems. Any off geometry parts or trim produced in the process prior to radiation curing can be recycled through processing several times without fear of premature cure.
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4.发明公开Compression molded flame retardant and high impact strength ultra high molecular weight polyethylene composition 失效模制的，阻燃和与超高分子量聚乙烯的高耐冲击组合物。
公开(公告)号：EP0414110A2
公开(公告)日：1991-02-27
申请号：EP90115611.7
申请日：1990-08-15
CPC分类号： B32B27/08 , B32B27/12 , B32B27/18 , B32B27/32 , B32B2262/101 , B32B2307/3065 , B32B2307/558 , B32B2323/043 , C08K3/32 , C08K7/14 , Y10S428/921 , Y10T428/24994 , Y10T428/252 , Y10T428/31913 , Y10T428/31917 , C08L23/06
摘要： Impact resistant and flame retardant polymer composition, slab-like rectangular solid made of said composition, and composite laminate article having at least one layer of said composition. Composition is preferentially compression molded using a blended particulate feed of relatively high bulk. The polymer composition comprises a maximum of 86 volume percent of ultra high molecular weight polyethylene (UHMWPE), a minimum of 8 volume percent of a flame retardant additive or mixture thereof, and a minimum of 6 volume percent of chopped reinforcing fibers, all volumes referring to the densified (molded) state. In addition the bulk volume of the chopped reinforcing fibers, as measured by a tapped density test, must be a minimum of 27 percent of the final molded volume of the composition (BVPF equal to or greater than 27). The maximum volume % loading of the additives is limited by the requirement that the notched Izod impact strength is a minimum of 7 ft.-lb per inch width. The preferred flame retardant additive is essentially a water insoluble form of ammonium polyphosphate having a water solubility not exceeding 1 gram per 100 grams of water, and the preferred reinforcing fibers are chopped glass fibers about 1/8 to 1/4" inch in length. A significant flame retardant improvement without sacrifice in impact strength is achieved if a thin compressible non-woven fiberglass veil is applied to the top of the particulate feed prior to molding the slab-like solid. The composite layer has first and third layers of essentially rigid compounded high molecular polymers above described, and a second or middle elastomer layer, which is also preferentially flame retarded.
摘要翻译： 耐冲击和阻燃聚合物组合物，平板状的长方体制成所述组合物，并且具有所述组合物的至少一个层复合层压制品。 组合物优选地压缩中相对高的堆的共混颗粒供料模制。 所述聚合物组合物包含最多的超高分子量聚乙烯（UHMWPE）的86％（体积），最小的阻燃添加剂或它们的混合物，和最小的短切增强纤维的6％（体积）的8％（体积），所有卷指 到致密化（成形）的状态。 此外，短切的增强纤维的总体积，如通过测量振实密度的测试，必须至少组合物的最终模量（BVPF等于或大于27）的27％。 所述添加剂的最大体积％负载是由要求的限制做的缺口伊佐德冲击强度为最小的每英寸宽度7英尺磅。 优选的阻燃添加剂是本质上具有的水溶解度不超过每100克水1克，和首选增强纤维的短切玻璃纤维的长度为约1/8至1/4“英寸多磷酸铵的水不溶性形式。 如果薄的可压缩非织造的玻璃纤维面纱被施加到前馈颗粒的顶部，以模制基本上是刚性的平板状的固体。该复合层具有第一层和第三层，而不牺牲甲显著阻燃剂的改进的冲击强度，实现 复合高分子聚合物如上所述，和第二或中间层的弹性体，所有这一切因此优先地阻燃。
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