| abstract |
The invention discloses a dynamic polymer thermoplastic elastomer. The polymer molecule of the thermoplastic elastomer has a multi-segment structure of multi-end segments-single middle segment, and the end segments can be mixed with each other and/or can form crystals independently phase and/or a phase incompatible with the middle segment to form a reversible phase-separation physical crosslinking based on the end segment; the middle segment is amorphous, and at least part of the segment contains at least one side group and / or side hydrogen bond groups on the side chains, which can form interchain supramolecular hydrogen bond dynamic crosslinks. Due to the dynamic reversibility of hydrogen bonds, this dynamic polymer thermoplastic elastomer has good toughness and self-healing properties, and is widely used in self-healing seals, sealants, and tough elastomers. |