US 12,187,857 B2
On-orbit recycling method for buffer foam of cargo spacecraft
Hansheng Zheng, Chengdu (CN); Yubin Yang, Chengdu (CN); Yi Zuo, Chengdu (CN); Lisheng Deng, Chengdu (CN); Shuxin Duan, Chengdu (CN); Yuehai Chen, Chengdu (CN); Wei Zhao, Chengdu (CN); Dan Li, Chengdu (CN); Peng Li, Chengdu (CN); Yiqian Cheng, Chengdu (CN); and Yu Luo, Chengdu (CN)
Assigned to Sichuan Institute of Space Systems Engineering, Chengdu (CN)
Filed by Sichuan Institute of Space Systems Engineering, Chengdu (CN)
Filed on Dec. 2, 2021, as Appl. No. 17/457,261.
Claims priority of application No. 202111019257.8 (CN), filed on Aug. 31, 2021.
Prior Publication US 2023/0060920 A1, Mar. 2, 2023
Int. Cl. C09J 175/04 (2006.01); B64G 99/00 (2009.01); B65B 5/06 (2006.01); B65B 29/10 (2006.01); B65D 81/05 (2006.01); C08J 9/33 (2006.01); C08J 9/35 (2006.01); C08J 11/06 (2006.01)
CPC C08J 11/06 (2013.01) [B64G 99/00 (2022.08); B65B 5/067 (2013.01); B65B 29/10 (2013.01); B65D 81/051 (2013.01); C08J 9/33 (2013.01); C08J 9/35 (2013.01); C09J 175/04 (2013.01); C08J 2375/04 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An on-orbit recycling method for a buffer foam of a cargo spacecraft, comprising the following steps:
mechanically cutting a shaped PU foam into cubic foam micro-blocks, and
putting the cubic foam micro-blocks into an outer packaging bag for packaging, wherein the outer packaging bag is filled with a foaming adhesive;
the foaming adhesive comprises a first component and a second component, and the first component and the second component are independently packaged in a two-component packaging bag; and
the first component and the second component are separated by a film; and
squeezing, in a microgravity state of space, the film between the first component and the second component to fully mix, foam and expand the first component and the second component and to finally burst the two-component packaging bag, wherein
after the two-component packaging bag is burst, the foaming adhesive expands into gaps of the cubic foam micro-blocks, and
the foaming adhesive, as a result of said burst in the microgravity state of space, expands and fills uniformly in all directions and fully infiltrates the cubic foam micro-blocks, to finally complete bonding and curing.