3 results about "Diazanaphthalene" patented technology

This invention discloses a continuous fiber reinforced thermoplastic resin-based prepreg, which is prepared by sequentially impregnating continuous fibers through a first impregnation and a second impregnation, followed by drying. The first impregnation solution contains a modifier, which includes an auxiliary thermoplastic resin and an auxiliary thermoplastic resin containing crosslinking groups. The second impregnation solution contains a bis(diazanaphthone)-structured thermoplastic resin, a soluble thermoplastic resin toughening agent, and a block copolymer. The auxiliary thermoplastic resin is a soluble amorphous thermoplastic resin with a glass transition temperature of 200°C or higher but lower than that of the bis(diazanaphthone)-structured thermoplastic resin. This invention employs a two-step impregnation method, using an auxiliary thermoplastic resin and an auxiliary thermoplastic resin containing crosslinking groups as modifiers for the first impregnation. The modifier's molecular chain flexibility is superior to that of the bis(diazanaphthone) resin, which facilitates preferential wetting of the continuous fiber surface and crosslinking anchoring.

The application discloses a continuous fiber reinforced bisnaphtholone structure thermoplastic resin based prepreg, and raw material compositions for preparing the prepreg include, in mass fraction, continuous fibers, bisnaphtholone structure thermoplastic resin, semi-crystalline thermoplastic resin and block copolymer; the molecular chain of the block copolymer includes bisnaphtholone structure thermoplastic resin repeating units and semi-crystalline thermoplastic resin repeating units, or naphthalene-coupled biphenyl structure polyarylene ether repeating units and semi-crystalline thermoplastic resin repeating units. The application adds semi-crystalline thermoplastic resin, and simultaneously introduces block copolymer containing bisnaphtholone repeating units or naphthalene-coupled biphenyl structure polyarylene ether repeating units and semi-crystalline thermoplastic resin repeating units in the molecular chain, so that the porosity of the prepreg is low, and the mechanical properties of the composite material prepared from the prepreg are excellent and the interlayer combination is good.