Static dissipative resin composition
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorMitsumasa Oku
Life of this patent
Estimating the term…
Abstract
In the static dissipative resin composition of the present invention, fundamentally, at least semiconductor fillers are dispersed in a resin and at least a part of the semiconductor fillers are brought into electrical contact with each other, thereby forming a conductive path. The .alpha. value representing the degree of the nonlinearity of the V-i characteristics at the contact between the semiconductor fillers should be 2-150, and the volume resistivity of the semiconductor filler is desirably 10.sup.5 -10.sup.10 .OMEGA..cm, whereby on the employment of a conductive filler or a solid lubricant together with the semiconductor filler, various physical properties of the resin composition are improved.
Claims17
A static dissipative resin composition, which comprises a resin and zinc oxide whiskers dispersed in the resin, wherein the zinc oxide whiskers each have an aspect ratio of more than 3, a length of more than 3 .mu.m from a base to a front edge thereof, and a volume resistivity of 10.sup.5 to 10.sup.10 .OMEGA..cm, whereby a conductive path is formed by electrical contact of the zinc oxide whiskers with each other to dissipate static electricity from the composition.
A static dissipative resin composition, which comprises a resin, and zinc oxide whiskers and at least one conductive filler dispersed in the resin, wherein the zinc oxide whiskers each have an aspect ratio of more than 3, a length of more than 3 .mu.m from a base to a front edge thereof, and a volume resistivity of 10.sup.5 to 10.sup.10 .OMEGA..cm, whereby a conductive path is formed by electrical contact of the zinc oxide whiskers with each other, the zinc oxide whiskers with the conductive fillers, or the conductive fillers with each other, to dissipate static electricity from the composition.
A static dissipative resin composition, which comprises a resin, and zinc oxide whiskers and at least one mechanical solid lubricant dispersed in the resin, wherein the zinc oxide whiskers each have an aspect ratio of more than 3, a length of more than 3 .mu.m from a base to a front edge thereof, and a volume resistivity of 10.sup.5 to 10.sup.10 .OMEGA..cm, whereby a conductive path is formed by electrical contact of the zinc oxide whiskers with each other to dissipate static electricity from the composition.
A static dissipative resin composition, which comprises a resin, and zinc oxide whiskers, and at least one mechanical solid lubricant and at least one conductive filler dispersed in the resin, wherein the zinc oxide whiskers each have an aspect ratio of more than 3, a length of more than 3 .mu.m from a base to a front edge thereof, and a volume resistivity of 10.sup.5 to 10.sup.10 .OMEGA..cm, whereby a conductive path is formed by electrical contact of the zinc oxide whiskers with each other, the zinc oxide whiskers with the conductive fillers, or the conductive fillers with each other, to dissipate static electricity from the composition.
Dependencies are inferred from the claim text.