5results about How to "Reduce moisture absorption performance" patented technology

The application provides a high-refraction cycloolefin copolymer and a preparation method thereof, and has a structure of formula I. The cycloolefin copolymer can obtain a cycloolefin copolymer resin with high thermal stability due to high steric hindrance of the cycloolefin monomer. The refractive index of the cycloolefin copolymer resin is greatly improved due to R3 and R4 on the cycloolefin monomer, and is first broken through to above 1.70, while maintaining high light transmittance of 91.0-96.0%, extremely low water absorption (<0.01%), and a glass transition temperature of 219 DEG C. The application prepares the cycloolefin copolymer resin with high activity, adjustable molecular weight and glass transition temperature by adjusting the reaction conditions. The copolymer resin has high refractive index, high light transmittance, heat resistance, low birefringence and moisture absorption, excellent fluidity, moldability and dimensional stability.

The present application relates to a solid form of an indole compound, a preparation method therefor and a use thereof. Specifically, the present application relates to a solid form of a compound of Formula (1), a method of preparing same, a pharmaceutical composition comprising same, and a use thereof in treating a disease.

The invention provides light lyocell cotton denim with low fibrillation and antibacterial and anti-mosquito functions and a preparation method of the light lyocell cotton denim, and relates to the technical field of functional finishing of textiles. The preparation method of the light lyocell cotton denim with low fibrillation and antibacterial and anti-mosquito functions comprises the five steps of fabric pretreatment, finishing liquid preparation, double-section padding, third-order curing and after-finishing. Through the synergistic effect of gradient crosslinking and natural antibacterial and anti-mosquito components, the fabric is endowed with lasting antibacterial and anti-mosquito functions while fibrillation of lyocell fibers is effectively inhibited, the technical problem that in a traditional finishing method, it is difficult to consider both fibrillation and functionality at the same time is solved, and the antibacterial and anti-mosquito effects of the fabric are improved. And the prepared fabric has excellent fibrillating resistance, lasting antibacterial and anti-mosquito effects and good softness and comfort.

The invention discloses a bio-based core-shell structure flame retardant and an application thereof in a bio-based plate. According to the invention, a phosphorus-carbon synergistic flame-retardant core-shell structure flame retardant is developed by taking a phosphorus-containing halogen-free flame retardant as a core and carrying out free radical copolymerization reaction on a furfuryl alcohol (FA) derivative containing phosphorus in different oxidation states and bismaleimide (BMI) with a charring function to form a cross-linked flame-retardant macromolecular shell layer. The core-shell flame retardant is proportionally mixed with crushed materials of a biological base material and an adhesive, and the mixture is subjected to hot press molding to obtain the flame-retardant biological base material. The flame retardant provided by the invention not only can endow a biological base material with good flame retardance and mechanical properties, but also can solve the problem of long-term durability of the biological base material.

The invention provides siloxane-based liquid cooling oil and a preparation method thereof, and the preparation method comprises the following steps: placing a cyclic siloxane monomer in an inert atmosphere, adding an acid catalyst and a base catalyst, and carrying out an acid-base dual-catalysis ring-opening polymerization reaction to obtain methyl-phenyl copolymerized siloxane, carrying out high-temperature distillation on the methyl-phenyl copolymerized siloxane to obtain siloxane-based liquid-cooled oil carrier liquid; the method comprises the following steps: adding a tertiary amine catalyst and deionized water into an organic alkoxy silane monomer and a fluoropropyl substituted alkoxy silane monomer, and carrying out a hydrolytic condensation reaction to obtain a siloxane precursor which comprises a liquid micro-network precursor and a hydrophobic chain segment precursor; the siloxane-based carrier liquid and the siloxane precursor are stirred and mixed according to a preset mass ratio, vacuum defoaming is performed after functional auxiliaries are added, the siloxane-based liquid cooling oil is obtained, and the functional auxiliaries comprise a polyether grafted dispersing agent and a low-molecular silicone oil rheology modifier. The defects that traditional liquid cooling oil is prone to blistering and dielectric gliding are effectively overcome.