摘要:
A composite laminate having improved impact strength, which comprises: a multilayer carbon fiber fabric, wherein said carbon fiber fabric may be a bidirectional weave or a unidirectional weave; a multilayer nonwoven mat, wherein said nonwoven mat is made of para-aramid; and cured epoxy resin, wherein said cured epoxy resin is made of the epoxy resin system designed for impregnation that immersed in the carbon fiber fabric layer and at least one layer of the nonwoven mat is sandwiched between two layers of carbon fiber fabric layer and both outer surface layers of the composite laminate are carbon fiber fabric layer.
摘要:
The invention relates to a sound-absorbing fabric comprising a glass fabric which is made froms glass yarns that are coated with a thetrmoplastic material, with an opening factor of between 0.5 and 6%.
摘要:
A lightweight, flexible, layered insulation composed of glass or ceramic fabric covered with a ceramic coating and overlying an insulating felt made from needled polybenzazole (PBZ) material which is preferably polybenzoxazole (PBO), and which optionally contains a poly(1,3-phenylene isophtalamide) felt material, commercially known as Nomex™, either combined with the PBZ felt or layered beneath the PBZ felt as a separate layer. The insulation is readily applied to a reusable launch vehicle via a silicone adhesive.
摘要:
The present invention teaches that a tightly woven, and strong panel of fiberglass may be impregnated with sodium silicate in order to produce a strong and fire resistant panel. The impregnation may occur by spraying, by rolling or by other means, and the drying process of the sodium silicate occurs after it has been impregnated into the fiberglass panel. The present invention further teaches that a fire door core may be mass produced from fire resistant panels and the core rated for fire safety by a rating agency, thus allowing door manufacturers to produce doors using that core without individually certifying each model of door. The present invention further teaches a method of manufacture of the a sodium silicate building panel, comprising the steps of producing a tightly woven fiberglass panel, impregnating it with sodium silicate, and allowing it to dry.
摘要:
A cement panel that is reinforced with a fabric made of carbon fibers. The cement panel includes a core layer that is made of a lightweight cement composition. This core layer is covered with a layer of reinforcing carbon fabric on the top and on the bottom, each bonded to the core with a coating of cementitious material on the top and on the bottom of the core layer. On the edges of the cement panels, the fabric layers are overlapped so as to augment the strength of these edges.
摘要:
The present invention relates to carbon-matrix composites, such as carbon-carbon composites, and a method for forming them by forming a fabric of fusible and infusible fibers which can be processed and carbonized to form a composite. The methods disclosed herein permit preparation of composites which are particularly thin, uniform, and highly pure. The invention also relates to preprocessed fabrics and precarbonized composites, such as those comprising carbon or oxidized polyacrylonitrile fibers and fusible polyacrylonitrile fibers.
摘要:
The present invention provides a glass mat thermoplastic comprising a glass mat impregnated with an engineering thermoplastic polyurethane (ETPU) having a Tg of at least 50null C. The glass mat thermoplastic can be prepared, for example, by a) contacting a continuous glass mat with ETPU film or sheet, or between ETPU films or sheets, with sufficient pressure and heat to form a multilayered structure which contains a wetted out glass mat layer sandwiched between an ETPU layer and a glass mat layer, b) thermoforming or compression molding the multilayered structure with sufficient heat to substantially completely wet out the glass mat with the ETPU; and c) cooling the substantially wetted out thermoformed glass mat to a temperature below the Tg of the ETPU. The efficiency with which the depolymerizable and repolymerizable ETPU can be impregnated into the glass mat matrix results in a GMT with excellent physical properties.
摘要:
In accordance with one aspect of the present invention, a material for an element of a power transmission-absorption assembly and the method of making such material is disclosed. The material has a pre-selected channel configuration to permit flow of a cooling medium thereacross or therethrough.
摘要:
A rigid fiber glass duct board for air ducts in which the air contacting surface is a mat facing formed from a saturated polyester/glass mat which presents a smooth surface to flowing air and hence avoids surface degradation at very high air velocities. A method of forming such a board is also disclosed.
摘要:
A perforated laminate comprises consecutive plies of a first layer of kraft paper, a first layer of polyolefin, a layer of polyolefin fabric, a second layer of polyolefin, and a second layer of kraft paper.