The present disclosure provides a method for preparing a piezoresistive sensor material, including: preparing a wood fiber aerogel; conducting dopamine self-polymerization on the surface of the aerogel to obtain a wood fiber-based hydrogel; soaking the wood fiber-based hydrogel in a nano conductive phase suspension or a nano conductive phase precursor to form a conductive phase-loaded wood fiber-based hydrogel; subjecting the conductive phase-loaded wood fiber-based hydrogel to reaction with an aqueous solution including a polyelectrolyte monomer, a crosslinker, an initiator and a catalyst to form a conductive phase-wood fiber-based hydrogel composite; and complexing the composite with metal ions. The present disclosure further discloses a piezoresistive sensor including the sensor material, and a preparation method thereof. The sensor material prepared by the method of the present disclosure has excellent mechanical strength and ionic conductivity, and a sensor further prepared has extremely-high sensitivity.

A system for treatment of wood poles that includes a container placed at the top of wooden poles with a drip or wick valve system to enable preservatives that extend the life of wooden poles to be applied to the pole. Embodiments may also include electrically insulating containers that can also function as insulators for high voltage electric lines, ground wires on power poles, electric fencing and the like.

The present disclosure provides a method for preparing a piezoresistive sensor material, including: preparing a wood fiber aerogel; conducting dopamine self-polymerization on the surface of the aerogel to obtain a wood fiber-based hydrogel; soaking the wood fiber-based hydrogel in a nano conductive phase suspension or a nano conductive phase precursor to form a conductive phase-loaded wood fiber-based hydrogel; subjecting the conductive phase-loaded wood fiber-based hydrogel to reaction with an aqueous solution including a polyelectrolyte monomer, a crosslinker, an initiator and a catalyst to form a conductive phase-wood fiber-based hydrogel composite; and complexing the composite with metal ions. The present disclosure further discloses a piezoresistive sensor including the sensor material, and a preparation method thereof. The sensor material prepared by the method of the present disclosure has excellent mechanical strength and ionic conductivity, and a sensor further prepared has extremely-high sensitivity.

The current invention relates to fire retardant composition for natural fiber products, in particular wood or wood-based panels, said fire retardant composition comprising one or more fire retardants and monoethanolamine, wherein said fire retardants have a total concentration of at least 20.00 wt. % based on the total weight of the fire retardant composition, and wherein monoethanolamine and said fire retardant are present in the fire retardant composition in a weight ratio of between 1:5 and 1:50. Further aspects of the invention relate to the use of the fire retardant composition, and to natural fiber products comprising said fire retardant composition.