Stretchable conductor, method for manufacturing same, and paste for forming stretchable conductor
A stretchable conductor of the present invention includes: a mixture which is configured of a stretchable portion made of an elastomer, and at least one type of conductive particles dispersed in the stretchable portion; and a conducting portion in which the conductive particles are aggregated in a higher concentration at one or a plurality of positions on an interface of the mixture than that at positions located in an inner portion of the mixture.
1. A stretchable conductor, comprising:
a stretchable portion; and
a conducting portion;
wherein:
the stretchable portion is made of an elastomer, a plurality of conductive particles being dispersed within the elastomer;
the conducting portion is made of an elastomer, a plurality of conductive particles being dispersed within the elastomer in a higher concentration than that of the stretchable portion;
the conducting portion is formed at one or a plurality of positions on an interface of the elastomer;
the plurality of conductive particles are arranged so as to overlap each other, and dispersed within the elastomer in the conducting portion; and
the conducting portion maintains the conductivity greater than 100 siemens when an extension of 50% to 200% of strain is applied.
2. The stretchable conductor according to claim 1 , wherein a content of the conductive particles is 400% or less with respect to the mass of the elastomer.
3. The stretchable conductor according to claim 1 , wherein the conductive particles are metal thin piece fine particles of which the particle diameter is 1 μm to 5 μm.
4. The stretchable conductor according to claim 1 , wherein the elastomer is crosslinked.
5. The stretchable conductor according to claim 1 , wherein the elastomer is a fluororubber.