Uploaded April 2023 | Updated September 2026, 2 hours ago
For a research project we needed to create a semi conductive layer around the test object. We tried silicone rubber and carbon black at university but could not achieve much conductivity. Our silicone rubber could not take much of carbon black in it and with high percentage of carbon black it turned into a solid paste which could not be cured. I therefore decided to take the matter to home and solve the issue at home. I bought Nail hardener and acrylic varnish from Action shop (The Netherlands), pretty cheap, each for less than 1.5 Euro.
Graphite powder was purchased from Ali express for ~ 5 Euro per 100 ml. I put the link in the description. Graphite powered is usually used as lubricant (for example if you want to lubricate piston of a model striling engine best is to use graphite powder).
It was found that for resistances in order-of 100s of Ohm/cm to a few kOhm/cm, 30% ratio or higher of graphite powder to nail hardener produce good results. For resistances in order of 10s of kOhm/cm to MOhm/cm 30% ratio or higher graphite powder to acrylic varnish gives good results.
Graphite powder:
nl.aliexpress.com/item/1005002024103361.html?spm=a2g0o.order_list.order_list_main.352.7b9979d2jXvCWQ&gatewayAdapt=glo2nld
Finance: N=70
subs=2952
Available budget (N): 2952-100-70*(70+1)=-2118
Storage limit: 2^ln(2952)=254,27
For a research project we needed to create a semi conductive layer around the test object. We tried silicone rubber and carbon black at university but could not achieve much conductivity. Our silicone rubber could not take much of carbon black in it and with high percentage of carbon black it turned into a solid paste which could not be cured. I therefore decided to take the matter to home and solve the issue at home. I bought Nail hardener and acrylic varnish from Action shop (The Netherlands), pretty cheap, each for less than 1.5 Euro.
Graphite powder was purchased from Ali express for ~ 5 Euro per 100 ml. I put the link in the description. Graphite powered is usually used as lubricant (for example if you want to lubricate piston of a model striling engine best is to use graphite powder).
It was found that for resistances in order-of 100s of Ohm/cm to a few kOhm/cm, 30% ratio or higher of graphite powder to nail hardener produce good results. For resistances in order of 10s of kOhm/cm to MOhm/cm 30% ratio or higher graphite powder to acrylic varnish gives good results.
Graphite powder:
nl.aliexpress.com/item/1005002024103361.html?spm=a2g0o.order_list.order_list_main.352.7b9979d2jXvCWQ&gatewayAdapt=glo2nld
Finance: N=70
subs=2952
Available budget (N): 2952-100-70*(70+1)=-2118
Storage limit: 2^ln(2952)=254,27
