One antonym for "disintegrates" is "integrates." When something integrates, it brings together or merges different elements into a unified whole. This could be applied to various contexts, such as integrating different departments within a company, merging different cultures to create a diverse community, or even blending different flavors in cooking.
Another antonym for "disintegrates" is "stabilizes." When something stabilizes, it becomes more secure, steady, and reliable. This could be relevant to financial markets stabilizing after a volatile period or a person's mental health stabilizing after experiencing instability.
Overall, integrating and stabilizing are two antonyms for disintegrating, representing the opposite actions of bringing things together and making them more secure.