3 results about "Black lead" patented technology

This invention relates to a polyester resin for 50 / 50 blended powder coatings. This polyester resin is obtained by reacting raw materials including glycerin black lead, ethylene glycol, diethylene glycol, terephthalic acid, 4,4'-biphenyl dicarboxylic acid, succinic acid, and pyromellitic dianhydride. The resulting product exhibits good impact resistance, a gloss level generally above 92%, and other properties such as adhesion that basically meet the application requirements of 50 / 50 blended powder coatings. Due to the comprehensive utilization of the effective components of glycerin black lead, it has the advantages of low cost and outstanding environmental performance.

The invention belongs to the technical field of photovoltaic modules, and particularly relates to a black lead-free environment-friendly bus bar and a coating method thereof, the black lead-free environment-friendly bus bar comprises a copper-based bar body, a lead-free conductive transition layer and a black lead-free functional coating, and the copper-based bar body, the lead-free conductive transition layer and the black lead-free functional coating are distributed from inside to outside; the copper-based belt body is a high-purity copper belt; the lead-free conductive transition layer is a tin-bismuth-silver alloy coating; the thickness of the black lead-free functional coating is 5-12 microns, and the surface resistivity is smaller than or equal to 0.05 ohm. The thickness of the copper-based strip body is 0.12-0.20 mm, and the elongation is larger than or equal to 22%. The problem of heavy metal pollution caused by lead-containing components in the bus bar can be completely eradicated, and meanwhile the current transmission efficiency of the bus bar is improved.

To provide a mold wash composition for a lost foam pattern capable of further suppressing burning.SOLUTION: The coating agent composition for the lost foam pattern contains refractory aggregates and carbon fibers, wherein the refractory aggregates contain refractory aggregates (A) having a refractoriness of SK1a or more and 15 or less and black lead.SELECTED DRAWING: Figure 1