In portable electronic devices, impact-absorbing materials are often required to exhibit excellent water resistance. This case study presents a systematic investigation of the water resistance properties of several foamed resins, with low-field nuclear magnetic resonance (LF-NMR) technology introduced as a characterization method.

Polypropylene (PP) is a colorless, translucent, and non-toxic thermoplastic resin. Compared to other general-purpose thermoplastics, it has advantages such as a low relative density, low cost, and good overall performance. As a result, it is widely used in various fields, including chemicals, construction, home appliances, agriculture, and transportation.

When producing butadiene for ABS, we cannot monitor the reaction process in real-time. The polymerization degree, crosslinking degree, and other indicators of the butadiene product are crucial for the subsequent production of ABS.

Low-field nuclear magnetic resonance primarily refers to nuclear magnetic resonance instruments with relatively low magnetic field strength. The application fields of low-field NMR technology are very broad and are continuously expanding.

Using low-field temperature-variable nuclear magnetic resonance (NMR) technology, the reactivity sequence of components containing active hydrogen in solid propellants, including YS (stearic acid), RD (2,2,4-trimethyl-1,2-dihydroquinoline polymer), antioxidant H (N,N'-diphenyl-p-phenylenediamine), PB (α,α-dimethylbenzyl alcohol), and the curing agent TDI (toluene diisocyanate), was studied.

The nuclear magnetic resonance polymer material testing system provides comprehensive research solutions, suitable for a wide range of materials, including elastomers such as rubber, as well as membrane materials and nanomaterials in the biological field.