摘要:
The present invention relates to a reinforced composite and method for recycling the same. The reinforced composite comprises a reinforcement material in a cross-linked polymer matrix, wherein the cross-linked polymer comprises a cross-linking group derived from a curing agent represented by formula (I), Wherein R1 is hydrogen, alkyl, cycloalkyl, heterocycloalkyl, alkenyl, cycloalkenyl, aryl, heteroaryl, alkoxy alkyl or alkynyl; A is alkyl, alkenyl, alkenene, alkylene-hetero-alkylene, alkylene-heterocyclo-alkylene, alkylene, alkylene-oxy-alkylene, 1,4-alkyl substituted piperazine, carbonyl, thiocarbonyl; B is alkyl, alkenyl, alkenene, alkylene-hetero-alkylene, alkylene-heterocyclo-alkylene, alkylene, alkylene-oxy-alkylene, 1,4-alkyl substituted piperazine, carbonyl, thiocarbonyl; R2 is hydrogen, alkyl, aminoalkyl, alkyl-amino-alkyl, cycloalkyl, heterocycloalkyl, alkenyl, aryl, or heteroaryl; and R3 is hydrogen, alkyl, aminoalkyl, alkyl-amino-alkyl, cycloalkyl, heterocycloalkyl, alkenyl, aryl, or heteroaryl.
摘要:
A method of forming an exterior surface protective structure (12) for an aircraft (10) includes uniting a loaded surfacer (52) having a carrier (51) to a hybrid prepreg substrate (32). The prepreg substrate (32) includes a carbon fabric (44) with an integral conductive component (48) having conductivity with in a metal conductivity range and is united to a base substrate (30). The loaded surfacer (52) and the prepreg substrate (32) are cured, which includes interfacially adhering matter between the loaded surfacer (52) and the prepreg substrate (32). A protective fabric system (12) for an exterior (14) of an aircraft (10) includes the base substrate (30). The hybrid prepreg substrate (32) is coupled to the base substrate (30). The loaded surfacer (52) with the carrier (51) is interfacially adhered to the prepreg substrate (32).
摘要:
A method of forming an exterior surface protective structure (12) for an aircraft (10) includes uniting a loaded surfacer (52) having a carrier (51) to a hybrid prepreg substrate (32). The prepreg substrate (32) includes a carbon fabric (44) with an integral conductive component (48) having conductivity with in a metal conductivity range and is united to a base substrate (30). The loaded surfacer (52) and the prepreg substrate (32) are cured, which includes interfacially adhering matter between the loaded surfacer (52) and the prepreg substrate (32). A protective fabric system (12) for an exterior (14) of an aircraft (10) includes the base substrate (30). The hybrid prepreg substrate (32) is coupled to the base substrate (30). The loaded surfacer (52) with the carrier (51) is interfacially adhered to the prepreg substrate (32).
摘要:
A multiplayer composite doctor blade has a side edge configured for application to the surface of a rotating roll in a paper making machine. The doctor blade has an inner core and intermediate layers preferably enclosed by outer layers. The inner core is predominantly polymeric material. The intermediate layers on opposite sides of the core include reinforcing fibers. The side edge of the doctor blade has an abrasiveness as measured by ASTM test method D5181-91 of between about 4.0 to 5.0.
摘要:
A simple, inexpensive, drillable, reduced CTE laminate and circuitized structures comprising the reduced CTE laminate, is provided. One embodiment of the reduced CTE laminate comprises: from about 40% to 75%, preferably from about 55% to 65%, by weight resin; from about 0.05% to 0.3%, preferably from about 0.08% to 0.10%, by weight curing agent; from about 25% to 60%, preferably from about 30% to 40%, by weight, woven cloth; from about 1% to 15%, preferably from about 5% to 10%, by volume, non-woven quartz mat. The method for making reduced CTE laminate and laminate structures comprises the following steps: providing non-woven quartz mat; providing a prepreg, preferably B-stage cured to not more than about 40%, preferably not more than 30% of full cure; sandwiching the non-woven quartz mat between two layers of prepreg, and reflowing the resin of the prepreg into the quartz mat.
摘要:
A protective fabric of high penetration resistance is formed from a plurality of layered, densely woven base fabrics, each formed by tightly weaving multifilament yarns to obtain a warp yarn “density” or “cover” in excess of 100% at the center of the fill yarn, and a fill yarn density or cover preferably also in excess of 75%. The yarns themselves preferably comprise a high modulus, high breaking strength yarn of materials such as Kevlar, Spectra, or Vectran. The resultant layered fabric offers especially high penetration resistance to weapons such as ice picks and the like. Additional resistance to penetration by sharp knives is provided by interruptedly coating the base fabric with an epoxy in such a manner as to inhibit penetration while providing drapability and breathability.
摘要:
A light-weight and impact-resistant composite material formed from a three-dimensional textile structure preform comprising at least three systems of yarns that define a plurality of interstices within the textile structure. A cellular matrix material impregnates the textile structure so as to fill the interstices of the three-dimensional textile structure and to coat at least a portion of the surface area thereof.
摘要:
A light-weight and impact-resistant composite material formed from a three-dimensional textile structure preform comprising at least three systems of yarns that define a plurality of interstices within the textile structure. A cellular matrix material impregnates the textile structure so as to fill the interstices of the three-dimensional textile structure and to coat at least a portion of the surface area thereof.
摘要:
The present invention provides compositions and processes wherein recycling of waste carpets and textiles is achieved by coating the individual yarn fibers with a low viscosity adhesive that is dispersed or dissolved in a suitable solvent to affect coverage of the fine fibers, and arranging the coated fibers in layers to affect the most desirable physical properties and then cured to provide a high modulus matrix for the coated fibers in the laminate structure. The fibers may be from unshredded or shredded waste carpets, shredded waste woven or non woven fabrics, fabric bits, and knitted fabrics. When the carpet is used in an as received condition, the face yarns, which may contain one or more components yarns, are coated and the carpets are arranged in a sandwich construction wherein the backings of the two carpets are placed back-to-back, e.g., (F-B-(B-F).sub.n -B-F, (n=0 or an integer value, F=face yarn and B=backing) and then heated under applied pressure to affect a cure of the resin coating and the adhesion between carpet backing layers. The resulting laminate consists of two outer fibrous layers that contains the unmelted yarns bundles from the carpet in a high modulus matrix.
摘要:
A method and apparatus for supplying twist free flat warp containing a plurality of carbon fibers to a plurality of wefts in a weaving loom, wherein the warp is transversely removed from a plurality of bobbins and twisted along a longitudinal travelling direction of the warps so that flat surfaces of individual flat warps are oriented at a right angle to an arranged direction. The plurality of flat warps are reeded to a desired density in relation to the arranged direction. The warps are then twisted along the longitudinal travelling direction so that the flat surfaces of the individual flat warps are oriented to the arranged direction.