▎ 摘　　要

NOVELTY - Aqueous composite high-temperature ink, comprises 30-50 pts. wt. glass powder, 10-23 pts. wt. ceramic powder, 13-25 pts. wt. ceramic pigment, and 15-25 pts. wt. aqueous varnish. USE - The aqueous composite high-temperature ink is useful for surface decoration, insulation and covering of substrates with small thermal expansion coefficient, preferably high temperature glass coating. ADVANTAGE - The aqueous composite high-temperature ink: has resistant to thermal shock, excellent thermal stability, and strong adhesion; is environmentally-friendly; and has simple preparation process. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: preparing aqueous composite high-temperature ink comprising (i) placing stirring tank in a warm water bath at 50-70 ℃ for 15-30 minutes, then adding aqueous varnish into the stirring tank, adding ceramic pigment under low-speed stirring, and stirring at a speed of 150-300 revolutions per minute for 3-5minutes, (ii) adding sequentially ceramic powder, heat-conducting additive and glass powder into the mixture obtained in step (i), stirring at a speed of 500-600 revolutions per minute for 3-5 minutes, mixing uniformly, increasing the stirring speed to 700 revolutions per minute, and stirring for 20-30 minutes, (iii) placing stirring tank in a ball mill for grinding for 2-4 hours, cooling to room temperature; (iv) pouring the semi-finished product composite ink in the stirring tank into a double-roller machine, and repeatedly rolling for more than 3 times to obtain final product; and preparing aqueous composite high-temperature ink-based coating comprising (a) adding 5-8 wt.% aqueous diluent into the aqueous composite high-temperature ink, diluting and stirring uniformly, (b) cleaning the low-expansion glass substrate, wiping the aqueous composite high-temperature ink diluted in the step (a) on a glass substrate panel and drying, and (c) transferring into a sintering furnace and gradually raising the temperature to a heating rate lower than 5 ℃/minute, sintering at 750-850 ℃ for 10-15 minutes, and cooling with the furnace.