43results about How to "Increase the amorphous region" patented technology

The invention relates to a processing method for providing an anti-wrinkle function to cellulose fiber based on a supercritical CO2 fluid technology. The method comprises the following steps: 1) pre-swelling or pretreating is carried out on the cellulose fibers; 2) auxiliaries are added to increase the solubility of anti-wrinkle drugs in supercritical CO2 fluids, and the hydrophilic anti-wrinkle drugs insoluble in the supercritical CO2 can be directly dissolved in the supercritical CO2 by employing a supercritical microemulsion / anti-micelles method; 3) the anti-wrinkle drugs are added to a medicine tank of high-pressure equipment, the air is removed, the CO2 is introduced, and the pressure in a container is raised to 8-30 MPa at 32-120 DEG C to obtain the supercritical CO2 fluid, so that the cellulose fiber is immersed in the supercritical CO2; and 4) the anti-wrinkle drug enters the pre-swollen cellulose fiber by dissolving in the supercritical CO2 fluid, and continuous relative movement between the drug-loaded supercritical CO2 and the cellulose fiber is carried out, after the pressure is released, the anti-wrinkle drug stays in an amorphous region of the cellulose fiber, and thedrug-loaded cellulose fiber for slow release can be formed.

The invention relates to a processing method for enabling cellulose fibers to have an anti-inflammatory function based on a super-critical CO2 fluid technology. The processing method comprises the following steps: 1) carrying out pre-swelling or pre-treatment on the cellulose fibers; 2) adding an auxiliary agent to increase the solubility of an anti-inflammatory medicine in super-critical CO2 fluid, and directly dissolving a hydrophilic anti-inflammatory medicine which is not easily dissolved into the super-critical CO2 fluid by adopting a super-critical micro-emulsion / reversed micelle method;3) adding the anti-inflammatory medicine into a medicine groove of high-pressure equipment, eliminating air and introducing CO2; raising the pressure in a container to be 8 to 30MPa at the temperature of 32 to 120 DEG C to obtain the super-critical CO2 fluid, so as to immerse the cellulose fibers into the super-critical CO2 fluid; 4) dissolving the anti-inflammatory medicine in the super-criticalCO2 and enabling the anti-inflammatory medicine to enter the pre-swollen cellulose fibers; enabling drug-loading super-critical CO2 fluid and the cellulose fibers to continuously do relative movement; enabling the anti-inflammatory medicine to stay in an amorphous region in the cellulose fibers after pressure relief, so as to form drug-loading cellulose fibers capable of being slowly released.

The invention relates to a processing method for providing a moisturizing function for cellulosic fibers based on a supercritical CO2 fluid technology. The processing method comprises: 1) pre-swellingor pre-treating cellulose fibers, 2) adding an auxiliary agent to increase the solubility of a moisturizing agent in a critical CO2 fluid and treating a hydrophilic moisturizing agent hard to dissolve in supercritical CO2 through a supercritical microemulsion / reverse micelle method so that the hydrophilic moisturizing agent is indirectly dissolved in supercritical CO2, 3) adding the moisturizingagent in an agent tank of high pressure equipment, discharging air, feeding CO2 into the agent tank and increasing the pressure in the container to 8-30MPa at 32-120 DEG C to obtain supercritical CO2flows so that the cellulose fibers are immersed in the supercritical CO2 flows and 4) feeding the moisturizing agent dissolved in the supercritical CO2 flows into the pre-swollen cellulose fibers, continuously moving the agent-loading supercritical CO2 relative to the cellulose fibers and releasing the pressure so that the moisturizing agent stays in the amorphous region in the cellulose fiber andan agent-loading cellulose fiber capable of sustained release is formed.

The invention relates to a wear-resistant high-impact-resistance nylon composite material which comprises the following components in parts by weight: 20-80 parts of nylon resin, 10-50 parts of fiber material, 10-40 parts of anti-wear agents, 0.1-2 parts of surface treating agent perfluoropolyether, 0.1-1.0 part of lubricant and 0.1-0.6 part of antioxidant. The preparation method comprises the following steps: uniformly mixing different types of anti-wear agents at medium speed; heating to 90-100 DEG C, adding the perfluoropolyether, and uniformly mixing at high speed; adding the nylon resin, lubricant and antioxidant, and continuing mixing uniformly; and carrying out melt blending extrusion, drawing, cooling, and granulation on the obtained mixture and fiber material through a double screw extruder, thereby obtaining the wear-resistant high-impact-resistance nylon composite material. The wear-resistant high-impact-resistance nylon composite material has the advantages of low friction factor, favorable wear resistance, high mechanical strength, favorable heat resistance, excellent toughness, excellent impact resistance, low mold shrinkage rate, favorable dimensional stability, favorable flowability and high processability.

The invention discloses a preparation method of composite polymer electrolyte. The preparation method of the composite polymer electrolyte includes: obtaining the composite polymer electrolyte through an ion-conducting agent; the preparation method of the ion-conducting agent includes: dissolving cuprous bromide powder and pentamethyldiethylenetriamine in an inert gas atmosphere Prepare catalyst solution in the first organic solvent; Monomer A dimethylaminoethyl methacrylate, monomer B di(ethylene glycol) methyl ether methacrylate and the first initiator are added to the catalyst solution respectively , and carry out atom transfer radical polymerization reaction at 75-85°C, and react for 10-60 minutes to obtain a reaction product; add excess cyclohexane to the reaction product to obtain a flocculent precipitate and purify to obtain an ion-conducting agent. The ion-conducting agent increases the amorphous region of the composite polymer electrolyte, can effectively inhibit the crystallization of the polymer matrix, thereby reducing the glass transition temperature, and then enhances the low-temperature ion conductivity of the composite polymer electrolyte.

The invention discloses a biodegradable copolyester with a high melting point and a preparation method thereof. The preparation method comprises the steps of putting terephthalic acid, butanediol, polyethylene glycol and a catalyst under vacuum conditions of 200-220°C and 60-80KPa React 4-6h to get reactant A; react adipic acid, isophthalic acid, butanediol and catalyst at 160-180°C and 60-80KPa vacuum conditions for 4-6h to get reactant B; reactant A And reactant B at 230-245 ℃, <100Pa vacuum conditions for 4-5h, in the system. The copolyester can effectively solve the problem of poor temperature resistance existing in the existing copolyester.

The invention discloses a method for preparing sodium carboxymethylcellulose with the degree of substitution from bagasse. The method comprises the following steps of: performing ball-milling pretreatment on bagasse fibers, and etherifying bagasse cellulose and purifying. In the method, the bagasse fibers are subjected to the ball-milling pretreatment, so a lignin protective layer is broken, a crystalline structure of the cellulose is changed, an amorphous area of the bagasse cellulose is increased, and the reaction activity of the bagasse cellulose is improved; and by a subsequent series of methods and the optimization of control parameters, the degree of substitution of the prepared sodium carboxymethylcellulose is up to 1.5, the yield is 50 percent, the production cost is low, and a process is simple and environment-friendly.

The present invention relates to a kind of based on supercritical CO 2 Fluid technology makes cellulose fibers have anti-oxidation processing method, which includes: 1) pre-swell or pre-treat cellulose fibers; 2) add additives to increase the antioxidant drug in supercritical CO 2 Solubility in, for insoluble supercritical CO 2 The hydrophilic antioxidant drugs were indirectly dissolved in supercritical CO by the method of supercritical microemulsion / reverse micelles. 2 Middle; 3) Add antioxidant drugs into the drug tank of high-pressure equipment, remove air, and introduce CO 2 , at 32-120°C, raise the pressure inside the vessel to 8-30MPa to obtain supercritical CO 2 fluid, whereby the cellulose fibers are soaked in supercritical CO 2 Middle; 4) Antioxidant drugs dissolved in supercritical CO 2 into pre-swelled cellulose fibers, drug-loaded supercritical CO 2 There is constant relative movement between the fluid and the cellulose fiber, and the antioxidant drug stays in the amorphous region inside the cellulose fiber after the pressure is released, forming a drug-loaded cellulose fiber capable of slow release.

The invention discloses a method for preparing acetate starch with mechanical activation solid phase reaction, comprising the following steps: a, mixing acetic anhydride equivalent to 40-80% of starch mass with starch, then adding solid sodium hydroxide equivalent to 1.0-4.0% of starch mass, stirring uniformly and then sealing for placing for 12-36h; b, loading a mixture obtained in the step a in a self-made ball-stirring mill, adding a ball milling medium with a ball material volume ratio of (6-12): 1, wherein the diameter of the ball milling medium is 4-8mm, stirring reaction lasts 40-80 min at the temperature of 40-80 DEG C, and the rotating speed of strirrer is 200-500 rpm; and c, separating the product with the ball milling medium, washing with ethanol with the volume fraction of 60-90% till the pH value is 6.0-7.0, vacuumizing and filtering, drying at the temperature of 30-60 DEG C, and then crashing till 100-120 meshed. According to the method, the acetate starch with high substitution value can be prepared, and the technology is simple and environmentally-friendly.

The present invention relates to a kind of based on supercritical CO 2 A processing method for making cellulose fibers have a weight-loss function by fluid technology, which includes: 1) pre-swelling or pre-treating cellulose fibers; 2 Solubility in fluid, for insoluble supercritical CO 2 The hydrophilic weight-loss drug uses the method of supercritical microemulsion / reverse micelles to dissolve it indirectly in supercritical CO 2 Middle; 3) Put the weight-loss medicine into the medicine tank of the high-pressure equipment, remove the air, and introduce CO 2 , at 32-120°C, raise the pressure inside the vessel to 8-30MPa to obtain supercritical CO 2 fluid, whereby the cellulose fibers are soaked in supercritical CO 2 Middle; 4) Weight-loss drugs are dissolved in supercritical CO 2 into pre-swelled cellulose fibers, and drug-loaded supercritical CO 2 There is constant relative movement between the fluid and the cellulose fiber, and the weight-loss drug stays in the amorphous area inside the cellulose fiber after the pressure is released, forming a drug-loaded cellulose fiber capable of slow release.

The present invention relates to a kind of based on supercritical CO 2 A processing method for making cellulose fibers have an insect repellent function by fluid technology, which includes: 1) pre-swelling or pre-treating cellulose fibers; 2 Solubility in fluid, for insoluble supercritical CO 2 The hydrophilic anthelmintic drugs are indirectly dissolved in supercritical CO by the method of supercritical microemulsion / reverse micelles. 2 Middle; 3) Add the anthelmintic drug into the drug tank of the high-pressure equipment, remove the air, and introduce CO 2 , at 32-120°C, raise the pressure inside the vessel to 8-30MPa to obtain supercritical CO 2 fluid, whereby the cellulose fibers are soaked in supercritical CO 2 Middle; 4) Anthelmintic drugs dissolved in supercritical CO 2 into pre-swelled cellulose fibers, and drug-loaded supercritical CO 2 There is constant relative movement between the fluid and the cellulose fiber, and the anthelmintic drug stays in the amorphous area inside the cellulose fiber after the pressure is released, forming a drug-loaded cellulose fiber capable of slow release.