2results about How to "Fast crystallization rate" patented technology

The invention discloses thermoplastic polyvinyl alcohol resin as well as a preparation method and application thereof. The thermoplastic polyvinyl alcohol resin comprises polyvinyl alcohol resin, a nucleating agent, a flow modifier and a thermoplastic agent. The thermoplastic polyvinyl alcohol resin has the characteristics of ultrahigh fluidity, high crystallization rate, stable film forming process and the like, and can be well applied to the field of ultrathin film preparation, the prepared thermoplastic polyvinyl alcohol ultrathin film is transparent and has few defects, and the thickness of the film can be as low as 10 microns or below.

The invention belongs to the technical field of membrane separation, and discloses a recycling and reusing method of waste synthetic liquid after MFI zeolite membrane reaction. The method comprises the following steps: collecting waste synthetic liquid after MFI zeolite membrane synthesis reaction, and removing possible large-particle impurities through simple physical separation means such as standing, centrifuging or filtering to obtain stable suspension rich in MFI crystals, and directly using the suspension as seed crystal liquid for next MFI membrane synthesis. According to the method, a complicated purification or retreatment process is not needed, and in-situ and all-component recovery of the waste synthetic liquid is realized. The method has the beneficial effects that the consumption of fresh seed crystals and chemical raw materials in the preparation process of the MFI film is greatly reduced, and the production cost is saved; meanwhile, the discharge of organic waste liquid is reduced, and the method is environment-friendly; the recycled seed crystal liquid is high in activity, when the seed crystal liquid is used for secondary synthesis, the prepared MFI membrane still has good continuity and separation performance, and an effective way is provided for achieving green, low-cost and sustainable manufacturing of the MFI membrane material.