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1.发明授权
公开(公告)号：US5985361A
公开(公告)日：1999-11-16
申请号：US61098
申请日：1998-04-16
CPC分类号： C08G18/1875 , C06B21/0083 , C06B45/12 , C08G18/6594 , C08G18/751 , C08G18/765 , F02K9/346
摘要： A robust polyurethane liner is disclosed for solid propellant rocket motors which is insensitive to large variations in stoichiometry, exhibits increased cohesive strength and, when used in combination with a unique two coat (wet coat) liner process described below, modifies the ballistic properties of the adjacent interfacial propellant layer. The liner compositions include a polymeric binder having a plurality of reactive hydroxyl functional groups and a curing agent having a plurality of reactive isocyanate functional groups. The quantity of binder and curing agent is selected such that the NCO/OH ratio is in the range from 1.5 to 4.5. Diisocyanate curing agents are particularly useful. A bonding agent, such as a polyfunctional aziridine compound, is typically present in the liner composition in an amount ranging from about 3% to about 5%, by weight. An oligomer catalyst is included in the liner composition in an amount ranging from about 15% to about 50%, by weight. Diammonium phosphate ((NH.sub.4).sub.2 HPO.sub.4) functions as an oligomer catalyst and as a ballistic modifier to inhibit propellant burn rate when the liner is cured concurrently with the propellant. A colorant, such as rhodamine B, may optionally be included to assist in determining coverage or thickness of the liner coating.
摘要翻译： 公开了用于固体推进剂火箭发动机的坚固的聚氨酯衬垫，其对化学计量的大变化不敏感，表现出增加的内聚强度，并且当与下述独特的两层（湿涂层）衬垫工艺组合使用时，改变了 相邻的界面推进剂层。 衬垫组合物包括具有多个反应性羟基官能团的聚合物粘合剂和具有多个反应性异氰酸酯官能团的固化剂。 选择粘合剂和固化剂的量使得NCO / OH比在1.5至4.5的范围内。 二异氰酸酯固化剂是特别有用的。 粘合剂，例如多官能氮丙啶化合物，通常以约3重量％至约5重量％的量存在于衬里组合物中。 衬垫组合物中包含的量为约15％至约50％的低聚物催化剂。 磷酸二氢铵（（NH4）2HPO4）作为低聚物催化剂，作为弹道改性剂，当衬垫与推进剂同时固化时，可以抑制推进剂燃烧速率。 可以任选地包括着色剂，例如罗丹明B，以帮助确定衬里涂层的覆盖度或厚度。
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公开(公告)号：US5660884A
公开(公告)日：1997-08-26
申请号：US550957
申请日：1995-10-31
申请人： Russell A. Crook , Larry W. Poulter
发明人： Russell A. Crook , Larry W. Poulter
CPC分类号： B08B3/08 , C09J5/02 , C23C22/64 , C23C22/66 , C08L77/00 , C08L81/04 , C08L83/00 , C09J2400/166 , C09J2477/00 , C09J2481/00 , C09J2483/00 , C23C2222/20 , Y10T428/31536
摘要： A surface preparation process has been developed for titanium and titanium alloy substrates that greatly improves the resulting bond. The process improves bond strength, fracture toughness, durability and failure mode of adhesive bonds. The process also decreases the sensitivity of titanium substrates to processing variables such as humidity, temperature and hence the processing timelines. The process involves treating a titanium or titanium alloy surface with a soluble silicate solution, such as an alkali metal metasilicate, and subsequently treating the surface with a solution of an organofunctional silane. Employing this two step process, bonding to the titanium substrate is improved.
摘要翻译： 已经开发了用于钛和钛合金基底的表面制备方法，其极大地改善了所得的结合。 该工艺提高了粘合强度，断裂韧性，耐久性和粘合剂粘合力的破坏模式。 该方法还降低了钛基板对加工变量（如湿度，温度和处理时间线）的敏感性。 该方法包括用可溶性硅酸盐溶液（例如碱金属偏硅酸盐）处理钛或钛合金表面，随后用有机官能硅烷的溶液处理该表面。 采用这两步工艺，可以改善与钛基板的结合。
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公开(公告)号：US5520768A
公开(公告)日：1996-05-28
申请号：US327305
申请日：1994-10-21
CPC分类号： B08B3/08 , C09J5/02 , C23C22/64 , C23C22/66 , C08L77/00 , C08L81/04 , C08L83/00 , C09J2400/166 , C09J2477/00 , C09J2481/00 , C09J2483/00 , C23C2222/20
摘要： A surface preparation process has been developed for aluminum and aluminum alloy substrates that greatly improves the resulting bond. The process improves bond strength, fracture toughness, durability and failure mode of adhesive bonds. The process also decreases the sensitivity of aluminum substrates to processing variables such as humidity, temperature and hence the processing timelines. The process involves treating an aluminum surface with a solution of an alkali metal metasilicate, and subsequently treating the surface with a solution of an organofunctional silane. Employing this two step process, bonding to the aluminum substrate is improved.
摘要翻译： 已经开发了用于铝和铝合金基底的表面制备方法，其极大地改善了所得的结合。 该工艺提高了粘合强度，断裂韧性，耐久性和粘合剂粘合力的破坏模式。 该方法还降低了铝基板对诸如湿度，温度和处理时间线等处理变量的敏感性。 该方法包括用碱金属偏硅酸盐的溶液处理铝表面，随后用有机官能硅烷的溶液处理该表面。 采用这两步工艺，可以改善与铝基板的结合。
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公开(公告)号：US4029557A
公开(公告)日：1977-06-14
申请号：US622599
申请日：1975-10-15
CPC分类号： C02F9/00 , C02F1/46109 , C02F1/4674 , C02F1/76 , C02F2001/46152 , C02F2101/18 , Y10S210/904
摘要： Sodium chloride is added to water which is then passed through at least one electrolytic cell. There, electrolysis of the sodium chloride produces chlorine molecules and sodium hydroxide. The water is then flowed into the presence of metal-cyanide contaminants. The chlorine and caustic immediately react with the metal-cyanide compounds to produce metal hydroxide precipitates, while the cyanide is decomposed and liberated from the water in carbon dioxide and gaseous nitrogen. As part of this reaction, the sodium chloride is reformed, so that the same brine can be recycled and the process repeated without further additives. The optimum pH of between 7 and 8 may be maintained as needed by addition of small amounts of hydrochloric acid to the system.
摘要翻译： 将氯化钠加入到水中，然后使其通过至少一个电解池。 那里，氯化钠的电解产生氯分子和氢氧化钠。 然后将水流入金属 - 氰化物污染物的存在下。 氯和苛性碱立即与金属氰化物化合物反应产生金属氢氧化物沉淀，而氰化物在二氧化碳和气态氮中分解并从水中释放出来。 作为该反应的一部分，将氯化钠重整，使得相同的盐水可以再循环，并且重复该过程而不需要另外的添加剂。 可以根据需要通过向系统中加入少量盐酸来保持7至8的最佳pH。
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5.发明授权
公开(公告)号：US6054521A
公开(公告)日：2000-04-25
申请号：US986875
申请日：1997-12-08
CPC分类号： F02K9/346 , C08G18/10 , C08G18/69 , C09D175/14 , Y10S60/909 , Y10T29/49346
摘要： The present invention concerns an erosion resistant, low signature liner for solid propellant rocket motors and rocket motors having such a low signature liner. The liner combustion products in the exhaust plume have low visibility in the IR and visible light spectra which is essential for use in low signature solid propellant rocket motors. The liner also forms an in-situ protective layer at elevated temperatures for enhanced erosion resistance. These erosion resistant properties eliminate the need for supplemental case insulation which would contribute additional smoke and combustion products to the exhaust plume as well as add additional costs and inert weight to the motor.
摘要翻译： 本发明涉及用于固体推进剂火箭发动机和具有这种低签名衬垫的火箭发动机的抗侵蚀，低签名衬垫。 排气羽流中的衬里燃烧产物在IR和可见光光谱中的可见度低，这对于使用低签名固体推进剂火箭发动机是必不可少的。 衬垫还在高温下形成原位保护层，以提高耐侵蚀性。 这些抗侵蚀性能消除了对补充壳体绝缘的需要，这将对排气羽流产生额外的烟雾和燃烧产物，并且对电动机增加额外的成本和惰性重量。
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公开(公告)号：USH1111H
公开(公告)日：1992-11-03
申请号：US678386
申请日：1991-04-01
申请人： William F. Dunn , Larry W. Poulter
发明人： William F. Dunn , Larry W. Poulter
CPC分类号： B29C33/56 , B29C33/0033
摘要： Tooling for solid propellant casting consisting essentially of a shaped, filled polymer or copolymer article having an outer layer of cured polyvinyl butyral. The casting tooling is used extensively throughout the solid propellant industry to mold or form the solid propellant grain of rocket motors. The cured polyvinyl butyral layer provides improved mold release properties to the tooling.
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公开(公告)号：US4793955A
公开(公告)日：1988-12-27
申请号：US497538
申请日：1983-05-24
申请人： Larry W. Poulter , John L. Brown , Ernest D. Brown
发明人： Larry W. Poulter , John L. Brown , Ernest D. Brown
IPC分类号： C06B21/00
CPC分类号： C06B21/0058 , C06B21/0075
摘要： A circular slit plate having slits therein that are symmetrically positioned and originate near the center of the plate and extend radially toward the outer diameter thereof is used to deaerate solid rocket motor propellant and to provide a uniform propellant flow distribution during rocket motor casting.
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8.发明授权Assembly including tubular bodies and mated with a compression loaded adhesive bond 失效组装包括管状体并与压缩加载的粘合剂粘合
公开(公告)号：US5984369A
公开(公告)日：1999-11-16
申请号：US94569
申请日：1998-06-15
CPC分类号： F16L55/13 , F02K9/343 , F16B11/008 , F16B7/025 , F16L55/136 , Y10S285/915
摘要： An assembly mating first and second tubular bodies is disclosed. The mating assembly includes at least a sleeve structure forming a part of the first tubular body and defining an inner receptacle surface region, a compression loading assembly integrally formed with, constituted by, or otherwise securable to the second tubular body and at least partially received in the sleeve structure, and a cured adhesive bond positioned between an exterior surface region of the compression loading assembly and the inner receptacle surface region to couple the sleeve structure to the compression loading assembly. The compression loading assembly is laterally expandable at at least the exterior surface region thereof and constructed and arranged relative to the cured adhesive bond so that expansion of the exterior surface region compressively loads the cured adhesive bond in a substantially lateral direction. The strength of the adhesive bond is thereby increased against shear stresses acting on said mating assembly due to longitudinal and/or torsional loading.
摘要翻译： 公开了一种组装配合的第一和第二管状体。 配合组件至少包括形成第一管状体的一部分并且限定内部容器表面区域的套筒结构，压缩加载组件，整体形成，由第二管状体构成或以其它方式固定到第二管状体，并且至少部分地被接收在 套筒结构以及固定的粘合剂粘合剂，其定位在压缩加载组件的外表面区域和内部容器表面区域之间，以将套管结构耦合到压缩加载组件。 压缩加载组件至少在其外表面区域处可横向膨胀，并且相对于固化的粘合剂粘合构造和布置，使得外表面区域的膨胀在大致横向上压缩固化的粘合剂粘合。 因此，由于纵向和/或扭转载荷，粘合剂粘结的强度因抗作用在所述配合组件上的剪切应力而增加。
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公开(公告)号：US5767221A
公开(公告)日：1998-06-16
申请号：US448825
申请日：1995-05-24
IPC分类号： C06B21/00 , C06B45/12 , C08G18/18 , C08G18/65 , C08G18/75 , C08G18/76 , F02K9/34 , C08G18/16
CPC分类号： C08G18/1875 , C06B21/0083 , C06B45/12 , C08G18/6594 , C08G18/751 , C08G18/765 , F02K9/346
摘要： A robust polyurethane liner is disclosed for solid propellant rocket motors which is insensitive to large variations in stoichiometry, exhibits increased cohesive strength and, when used in combination with a unique two coat (wet coat) liner process described below, modifies the ballistic properties of the adjacent interfacial propellant layer. The liner compositions include a polymeric binder having a plurality of reactive hydroxyl functional groups and a curing agent having a plurality of reactive isocyanate functional groups. The quantity of binder and curing agent is selected such that the NCO/OH ratio is in the range from 1.5 to 4.5. Diisocyanate curing agents are particularly useful. A bonding agent, such as a polyfunctional aziridine compound, is typically present in the liner composition in an amount ranging from about 3% to about 5%, by weight. An oligomer catalyst is included in the liner composition in an amount ranging from about 15% to about 50%, by weight. Diammonium phosphate ((NH.sub.4).sub.2 HPO.sub.4) functions as an oligomer catalyst and as a ballistic modifier to inhibit propellant burn rate when the liner is cured concurrently with the propellant. A colorant, such as rhodamine B, may optionally be included to assist in determining coverage or thickness of the liner coating.
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公开(公告)号：US4023935A
公开(公告)日：1977-05-17
申请号：US180741
申请日：1971-09-15
CPC分类号： C01C1/24
摘要： A method of making finely particulate ammonium perchlorate which comprises establishing a two-phase liquid system in which the upper phase is a concentrated solution of ammonium perchlorate and the lower phase is a liquid which is immiscible with the upper phase solvent and a non-solvent for ammonium perchlorate. Precipitation of ammonium perchlorate from the solution into the non-solvent is effected by either cooling the solution or evaporating the solvent thereof while subjecting the system to ultra-sonic vibrations. Fine ammonium perchlorate particles collect in the non-solvent phase and are recovered therefrom.
摘要翻译： 一种制备细颗粒高氯酸铵的方法，其包括建立两相液体系统，其中上相是高氯酸铵的浓溶液，下相是与上相溶剂不混溶的液体， 高氯酸铵。 将高氯酸铵从溶液中沉淀到非溶剂中是通过冷却溶液或蒸发其溶剂同时使体系超声波振动而实现的。 高纯氯铵颗粒在非溶剂相中收集并从中回收。
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