Burned plant material and electromagnetic shielding member

Details Burned plant material and electromagnetic shielding member Burned plant material and electromagnetic shielding member

C - Chemistry, Metallurgy

01

B

C01B 31/02 (2006.01) C04B 38/06 (2006.01) H05K 9/00 (2006.01)

Patent

CA 2739965

Provided is an electrically conductive composition capable of making specific volume resistivity control easier, which can be produced by using a carbonaceous material comprising a burned plant material alone. A burned plant material is produced from soybean hulls, rapeseed meal, sesame meal, cotton seed meal, cotton hulls, rice hulls, rice bran, soybean chaffs, rice straws, cereal hulls or the like by adjusting any of the carbon content, burning temperature and median diameter. The burned and carbonized plant material is ground and sieved to give a median diameter of approx. 80 µm or below. The burned plant material is obtained by burning at a temperature of 700 °C or higher.

La présente invention concerne une composition électroconductrice capable de simplifier la régulation de la résistivité transversale pouvant être produite au moyen d'un matériau carboné comprenant un matériau végétal brûlé seul. Le mode de réalisation consiste à utiliser la pellicule de soja, un gâteau d'huile de colza, un gâteau d'huile de sésame, un gâteau d'huile de coton, de l'écorce de riz, du son de riz, de la paille de soja, de la paille de riz, la pellicule des céréales ou tout autre composant similaire pour produire un matériau végétal brûlé par régulation de la teneur en charbon, de la température de combustion ou du diamètre moyen. Après combustion, le matériau est broyé puis tamisé de manière à obtenir un diamètre moyen égal ou inférieur à environ 80 µm. Le matériau végétal brûlé est obtenu par combustion à une température égale ou supérieure à 700°C.

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