On-orbit recycling method for buffer foam of cargo spacecraft

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.