33results about How to "With hydrophobic function" patented technology

The invention provides a hydrophobic silicon dioxide / polyimide aerogel composite material. The hydrophobic silicon dioxide / polyimide aerogel composite material comprises hydrophobic modified silicon dioxide aerogel and polyimide aerogel, wherein the polyimide aerogel is used as a substrate of the composite material, and hydrophobic modified silicon dioxide aerogel fillers are embedded into pores of the polyimide aerogel. According to the hydrophobic silicon dioxide / polyimide aerogel composite material, the silicon dioxide aerogel is added to the polyimide aerogel; the polyimide aerogel is usedas the substrate and a framework of a composite heat insulation material to realize the supporting reinforcing effect, so that the mechanical strength of the composite heat insulation material is improved; and the silicon dioxide aerogel is used as the filler and has the hydrophobic function and outstanding heat insulation performance, so that the heat insulation effect is realized in the composite material. The hydrophobic silicon dioxide / polyimide aerogel composite material comprehensively considers the physical performance and the mechanical performance of the composite heat insulation material and has the advantages of being high in strength, high in high temperature resistance, low in volume weight, low in heat conductivity, and high in waterproofing performance, and meets the requirements on performances of the heat insulation material in actual application.

The invention discloses siloxane-polyester copolymer resin, a siloxane-polyester copolymer compound substrate membrane, and methods for preparing the siloxane-polyester copolymer resin and the siloxane-polyester copolymer compound substrate membrane. The molecular weight of the siloxane-polyester copolymer resin is 10000-25000. The siloxane-polyester copolymer resin is prepared through reaction between terephthalic acid and a compound containing dyhydroxy. The siloxane-polyester copolymer resin and PET resin are molten through an extruder based on the mass ratio of (10-200) : 100, and then delamination coextrusion with a resin melting distributor, casting strip combination, longitudinal drawing, horizontal drawing, heat setting, cooling and coiling are conducted to obtain the siloxane-polyester copolymer compound substrate membrane. The thickness of the compound substrate membrane prepared from the siloxane-polyester copolymer is 100-300 microns, and the compound substrate membrane is especially suitable for manufacturing of release films and hydrolysis resistance materials for solar photovoltaic cell backboards and is high in performance and practicality.

The invention belongs to the field of textiles and garments, and discloses a single-side water-repellent and single-side water-absorbent fabric and its processing technology, including a water-absorbing layer and a water-repellent layer. Finished and processed in one. The beneficial effects of this patent are: the water repellency of the fabric obtained by the process of the present invention reaches above level 4 before washing, and still reaches above level 3 after washing 10 times, and the water absorption performance of one side is all above 3 before washing and after washing 10 times. Within seconds, it can quickly absorb splashed blood without penetrating into the user's inner clothing, which can be widely used in products such as medical surgical gowns.

The invention discloses hydrolysis-resistant fluorine-containing copolyester resin, a hydrolysis-resistant fluorine-containing copolyester composite basal membrane and a preparation method thereof. The molecular weight of the hydrolysis-resistant fluorine-containing copolyester resin ranges from 14,000 to 25,000; the hydrolysis-resistant fluorine-containing copolyester resin is prepared through binary formic acid and ethanediol, the hydrolysis-resistant fluorine-containing copolyester resin and PET resin are fused through an extruder according to the mass ratio of (10-200) to 100, layered coextrusion through a resin fusion distributor, casting strip compound, longitudinal stretching, transverse stretching, heat setting, cooling and rolling are conducted, and the hydrolysis-resistant fluorine-containing copolyester composite basal membrane is prepared. According to the hydrolysis-resistant fluorine-containing copolyester resin, the hydrolysis-resistant fluorine-containing copolyester composite basal membrane and the preparation method thereof, the thickness of the hydrolysis-resistant fluorine-containing copolyester composite basal membrane ranges from 100 micrometers to 300 micrometers, and the hydrolysis-resistant fluorine-containing copolyester composite basal membrane is specially suitable for manufacturing of a release membrane and solar energy photovoltaic cell backplane materials, good in performance and strongin practicability.

The invention discloses a graphene-based three-dimensional fiber paper for oil-water separation and a preparation method thereof. The graphene-based three-dimensional fiber paper is prepared with a porous graphene composite material on a non-woven fabric substrate, and the graphene in the graphene composite material The surface is modified with metal ions, and the combination of metal ions and the hydrophilic groups on the surface of graphene makes graphene non-hydrophilic. At the same time, because the surface of graphene has more C=O hydrophobic functional groups, graphene is hydrophobic. Function; the combination of graphene composite material is porous, so that the fiber paper has a honeycomb multi-layer porous structure, and graphene itself has a large specific surface area, so that the material can fully absorb oil and gas molecules, so that the material is in the oil A small oil storage chamber is formed during the adsorption process to increase oil adsorption efficiency and oil-water separation efficiency. At the same time, it has a good ability to remove oil on the water surface and can be used for environmental protection.

The invention relates to an on-line preparation method for hydrophobic yarn in embedded type composite spinning and belongs to the technical field of textile processing. An embedded type composite spinning method is characterized in that filaments tightly wrap short fibers; by utilizing the characteristic, a modification device is arranged at a running route of viscose filaments between a filamentdrum on a ring spinning frame and a front roller, and a drying device is disposed at the position of a spun yarn running route between the front roller and a spun yarn pipe. The modification device applies a modification liquid to the viscose filaments, the drying device dries spun yarn formed by twisting, and the hydrophobic yarn is prepared by using the viscose filaments to wrap the outer sideof rough cotton yarn in a spatial spiral shape and transferring the modification liquid on the viscose filaments to cotton fibers in contact with the modification liquid. The on-line preparation method is modified based on a method for follow-up modification on existing yarn or fabrics, causes the spinning and the modification to be performed simultaneously, shortens the production cycle, reducesthe production cost and simplifies operation steps.

The invention discloses a preparation method of a composite membrane with a hydrophobization function. The preparation method comprises the following steps: performing membrane scraping for multiple times on a glass plate by a mixed polytetrafluoroethylene liquid and curing for forming a membrane in a gelling bath to obtain a base membrane layer; dissolving poly-perfluoroalkyl ethyl acrylic ester granules in a mixed solution of monofluoride dichloroethane (HCFC-141b) and fluorosilane and stirring; adding epoxy resin and a phenolic aldehyde amine epoxy hardener to obtain a new mixed solution; mixing the new mixed solution with E type epoxy resin to obtain a mixture and applying the mixture onto the base membrane layer; and performing drying to obtain the composite membrane with the hydrophobization function. In the way, the preparation method of the composite membrane with the hydrophobization function has the advantages that the raw materials are extensive in source and easy to obtain, the preparation process is simple, and the preparation method is easy to operate without over-high requirements on the operation technique of operators and can effectively save cost; the obtained composite membrane with the hydrophobization function has certain hardness and strength and is excellent in hydrophobization performance.

The invention discloses a high-temperature-resistant drag-reducing energy-saving heavy-duty anti-corrosion coating for thermal pipeline inner walls. The coating contains two components of A and B, wherein the weigth percentages of the component A comprise: phenolic epoxy resin 20%-30%, organosilicone epoxy hybrid resin 20%-30%, silicone-free polymer defoamer 0.3%-0.5%, pigment-affine-group-containing polymer interpolymer dispersant 0.5%-0.7%, hydrophobic fumed silica 0.35%-0.5%, castor oil modified derivative rheological additive 0.35%-0.8%, modified zinc phosphate 3.0% to 5.0%, aluminum tripolyphosphate 2.0%-4.0%, mica powder 10.0%-20.0%, talcum powder 10.0%-15.0%, titanium dioxide 5.0%-10.0%, polytetrafluoroethylene powder 2.0%-5.0%, xylene 2.0%-7.0%, and n-butanol 1.0%-3.0%; and the weight percentages of the component B comprise: modified alicyclic amine 72.5%-75.5%, and aminoalkoxysilane 24.5%-27.5%. The coating can effectively protect thermal pipelines, and reduce maintenance andpipe cleaning frequency, and has a positive effect on urban central heating.