2results about How to "Improve load fastness" patented technology

The invention discloses a method for modifying fibroin of synthetic fibers, which comprises pretreatment and silk making, silk protein peptide powder is directly melted and blended into polymer master batch and an auxiliary functional aid, and silk making is performed by sequentially utilizing spinning, cooling and drafting, so that the synthetic fibers (such as polyester or chinlon) are provided with silk protein peptide, and the silk protein peptide powder is added into the polymer master batch and the auxiliary functional aid. The silk protein peptide has the advantages of the silk protein peptide, and the silk protein peptide is not easy to dissolve and lose.

This invention belongs to the field of biofuel preparation technology, specifically relating to a highly efficient method for preparing biodiesel. The method includes the following steps: adding feedstock oil, free lipase, and short-chain alcohol to a reactor, catalytically reacting at 20–70°C; after the reaction, centrifuging to collect the oil phase for preliminary distillation and purification to obtain crude biodiesel; adding the obtained crude biodiesel and short-chain alcohol to a reactor filled with a silicon-based cation exchange resin catalyst, catalytically esterifying at 40–140°C; after the reaction, distilling to remove water and unreacted short-chain alcohol to obtain the finished biodiesel. The silicon-based cation exchange resin catalyst is obtained by nitric acid oxidation of mercapto-modified SiO2 microspheres. This invention's preparation method utilizes a low-cost free lipase combined with a specific highly active and stable silicon-based cation exchange resin catalyst, enabling efficient and low-cost biodiesel preparation.