The electroless nickel plating on the surface of carbon fibers was prepared by pretreating the carbon fibers in order to increase their conductivity,and consequently enhance the EMI shielding effectiveness of the comp...The electroless nickel plating on the surface of carbon fibers was prepared by pretreating the carbon fibers in order to increase their conductivity,and consequently enhance the EMI shielding effectiveness of the composites.The relationship between the performance of depositing coat and pH value,temperature,reaction time and the way of agitation was studied.Results show that the depositing quality is stable under pH between 4.5 and 5.0,temperature between 75 ℃ and 85 ℃,reaction time for 10 min and air agitation.The uniform and compact nickel layer deposited on carbon fibers was proved by XRD and SEM,and the electrical resistivity of carbon fibers with nickel coating was tested.Results indicate that the electrical resistivity of carbon fibers with electroless nickel plating is decreased by an order of magnitude compared with that of carbon fibers.It means that nickel coating can greatly improve the electromagnetic interference shielding properties of carbon fibers.展开更多
By the study of electromagnetic shielding principle,we have designed some new style fabrics for anti-electromagnetic radiation through the research of raw materials and fabric texture,and solved the key technical prob...By the study of electromagnetic shielding principle,we have designed some new style fabrics for anti-electromagnetic radiation through the research of raw materials and fabric texture,and solved the key technical problems such as the manufacture of composite yarn which composed of stainless steel filament and cotton yarn.As a newly developed high technology material,the new style anti-electromagnetic radiation fabric was woven by the special yarn composed of stainless filament and nature fiber.The new fabric overcomes the defect in the production and service of the shielding fabrics at present and satisfies the people's requirement the routine job and life.With further improvement,it can be widely used in aviation,navigation and military project,underground project and so on.展开更多
文摘The electroless nickel plating on the surface of carbon fibers was prepared by pretreating the carbon fibers in order to increase their conductivity,and consequently enhance the EMI shielding effectiveness of the composites.The relationship between the performance of depositing coat and pH value,temperature,reaction time and the way of agitation was studied.Results show that the depositing quality is stable under pH between 4.5 and 5.0,temperature between 75 ℃ and 85 ℃,reaction time for 10 min and air agitation.The uniform and compact nickel layer deposited on carbon fibers was proved by XRD and SEM,and the electrical resistivity of carbon fibers with nickel coating was tested.Results indicate that the electrical resistivity of carbon fibers with electroless nickel plating is decreased by an order of magnitude compared with that of carbon fibers.It means that nickel coating can greatly improve the electromagnetic interference shielding properties of carbon fibers.
文摘By the study of electromagnetic shielding principle,we have designed some new style fabrics for anti-electromagnetic radiation through the research of raw materials and fabric texture,and solved the key technical problems such as the manufacture of composite yarn which composed of stainless steel filament and cotton yarn.As a newly developed high technology material,the new style anti-electromagnetic radiation fabric was woven by the special yarn composed of stainless filament and nature fiber.The new fabric overcomes the defect in the production and service of the shielding fabrics at present and satisfies the people's requirement the routine job and life.With further improvement,it can be widely used in aviation,navigation and military project,underground project and so on.
