US 12,030,817 B2
Multicolor light-storing ceramic for fire-protection indication and preparation method thereof
Le Zhang, Xuzhou (CN); Shunshun Yang, Xuzhou (CN); Rui Wang, Xuzhou (CN); Jin Huang, Xuzhou (CN); Zhanran Wang, Xuzhou (CN); Xiaoyu Zhu, Xuzhou (CN); Jian Kang, Xuzhou (CN); Can Huang, Xuzhou (CN); Bingheng Sun, Xuzhou (CN); Tianyuan Zhou, Xuzhou (CN); and Hao Chen, Xuzhou (CN)
Assigned to JIANGSU NORMAL UNIVERSITY, Xuzhou (CN); and XUZHOU ALL-TO PHOTOELECTRIC TECHNOLOGY CO., LTD, Xuzhou (CN)
Filed by Jiangsu Normal University, Xuzhou (CN); and Xuzhou All-To Photoelectric Technology Co., LTD, Xuzhou (CN)
Filed on Dec. 1, 2021, as Appl. No. 17/539,387.
Application 17/539,387 is a continuation of application No. PCT/CN2019/096259, filed on Jul. 17, 2019.
Claims priority of application No. 201910587345.4 (CN), filed on Jul. 2, 2019.
Prior Publication US 2022/0089498 A1, Mar. 24, 2022
Int. Cl. C04B 35/14 (2006.01); B28B 3/02 (2006.01); B28B 3/08 (2006.01); B28B 11/24 (2006.01); B41M 1/34 (2006.01); C04B 35/622 (2006.01); C04B 35/626 (2006.01); C04B 35/636 (2006.01); C04B 35/64 (2006.01); C04B 38/06 (2006.01); C04B 41/00 (2006.01); C04B 41/45 (2006.01); C04B 41/50 (2006.01); C04B 41/81 (2006.01); C04B 41/85 (2006.01); C09K 11/77 (2006.01); C04B 111/28 (2006.01); C04B 111/80 (2006.01)
CPC C04B 35/14 (2013.01) [B28B 3/02 (2013.01); B28B 3/083 (2013.01); B28B 11/243 (2013.01); B41M 1/34 (2013.01); C04B 35/62204 (2013.01); C04B 35/6263 (2013.01); C04B 35/62655 (2013.01); C04B 35/62695 (2013.01); C04B 35/6365 (2013.01); C04B 35/64 (2013.01); C04B 38/0645 (2013.01); C04B 41/009 (2013.01); C04B 41/4572 (2013.01); C04B 41/50 (2013.01); C04B 41/81 (2013.01); C04B 41/85 (2013.01); C09K 11/7734 (2013.01); C09K 11/7792 (2013.01); C04B 2111/28 (2013.01); C04B 2111/807 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/36 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/5454 (2013.01); C04B 2235/6562 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/9646 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A preparation method of a multicolor light-storing ceramic for fire-protection indication, comprising:
step (1) adding a glass based raw material, a light-storing powder, a dispersant and an alumina powder into a granulator, adding water mixed with a pore-forming agent into the granulator, and then mechanically stirring for granulation by the granulator; adding a plasticizer into the granulator after the stirring of 4˜8 hours (h), and continuing the stirring for 1˜3h to thereby obtain a mixture; wherein a stirring speed of the stirring is in a range from 100 radians per minute (rad/min) to 300rad/min, and the glass based raw material comprises a recycled float glass waste or a recycled industrial waste glass;
step (2) packing the mixture obtained in the step (1) into a mold, performing tabletting to the mixture packed into the mold by an automatic tablet presser, and then demolding to obtain a green body and subsequently delivering the green body to a kiln for drying and firing; wherein a shape of the mold is required for target product requirements, a pressure during performing the tabletting is in a range from 5 megapascals (MPa) to 40 MPa, and a pressure holding time during performing the tabletting is in a range from 5 seconds (s) to 20s;
step (3) drying and firing the green body in the kiln, comprising: heating from room temperature to 200 Celsius degrees (° C.) at a rate of 2˜5 Celsius degrees per minute (° C./min) and then holding for 10˜30 minutes (min), then continuing to heat up to 400˜900° C. and holding for 60˜120 min, and subsequently cooling down to below 100° C. with the kiln and taking out to obtain a light-storing self-luminous quartz ceramic; and
step (4) printing a pattern onto a surface of the light-storing self-luminous quartz ceramic, and then curing the light-storing self-luminous quartz ceramic with the pattern under a temperature in a range from 300° ° C.to 600° C. for 20˜40 min to obtain a light-storing ceramic for indication sign.