34results about How to "Shorten swelling time" patented technology

The invention discloses a preparation method of polymer particle, which comprises suspending monodisperse and swelling seed polymer particles with a first preset value of mass into a water solution containing stabilizer and surface activator, mixing polymerisable monomer with mass of second preset value and initiator with mass as third preset value, be added into a monomer solution at polymerisable temperature to process reaction while the reaction degree is controlled at 30-98%, adjusting temperature, adding reactant, swelling, while the reactant contains a polymerisable monomer with mass offourth preset value or a second crosslinkable monomer with mass of fifth preset value, and an initiator with mass of sixth preset value, and heating to polymerisable temperature to process polymerization reaction. The inventive microballoon has better monodispersity, high yield, reaction reproduction support, reduced production cost and controllable product shape and property, while the inventioncan prepare porous monodisperse microballoon product.

The invention relates to a polyolefin film and a preparation method thereof. The polyolefin resin is placed in a solvent, and the temperature is controlled to perform swelling treatment at the swelling temperature of the polyolefin resin; after filtration, an antioxidant is added, and the polyolefin resin is processed through a twin-screw extruder. Extrude at 170°C-230°C, cool at room temperature-90°C, stretch, extract with extractant, stretch at 110°C-130°C, and set at 100°C-128°C to prepare a polyolefin film. Compared with the prior art, the invention can carry out continuous production, and the prepared film has the advantages of good solubility and the like.

The invention discloses a preparation method of a composite conductive polylactic acid material. The preparation method comprises the following steps of 1 adding an aniline monomer into ethylene propylene diene monomer powder to obtain swelled ethylene propylene diene monomer powder, 2 obtaining ethylene propylene diene monomer / composite conductive polyaniline powder, 3 putting the ethylene propylene diene monomer / composite conductive polyaniline powder obtained in the step 2 and polylactic acid into a high-speed mixing machine to obtain ethylene propylene diene monomer / polyaniline / composite polylactic acid particles into a mold to obtain the composite conductive polylactic acid material. In the preparation method, the assisting effect of ultrasonic waves enables the ethylene propylene diene monomer powder to swell and produce cavatition effect, the diffusion speed of the aniline monomer can be improved, and swelling time can be shortened.

The invention discloses a chitin-modified PP spun-bonded non-woven fabric, which contains 0.2-1.5% of chitosan. The chitosan-modified pp spunbonded non-woven fabric has a mildew grade ≤ grade 1, and an antibacterial rate ≥ 99.5%; the chitosan-modified pp spunbonded non-woven fabric prepared by the present invention has added modified chitin, chitin During the modification process, by optimizing the modification process and removing the standing steps, the modification time of chitosan was greatly reduced by 3-5 times, and the production efficiency was improved.

A swelling agent coating and heating device comprises a cover, a heating device and a swelling agent coating device, wherein the cover is of a hollow cuboid structure without a lower bottom surface, a first cavity is formed inside the cover, the cover enables an anisotropic conductive film in a terminal area to be buckled in the first cavity, the heating device and the swelling agent coating device are fixed to the cover and are communicated with the cover, the heating device provides hot air for the first cavity, and the anisotropic conductive film in the first cavity is coated with a swelling agent through the swelling agent coating device. The invention further provides an operation method of the swelling agent coating and heating device. Due to the fact that the swelling agent coating and heating device comprises the cover, the heating device and the swelling agent coating device, the swelling agent does not need to be coated through a manual method, harm to the body caused when an operator makes contact with the swelling agent for a long time can be avoided, meanwhile, the swelling time of the swelling agent is shortened, and working efficiency is effectively improved.

The invention relates to a method for preparing low-cost biodegradable plant fiber starch tableware. S1: take plant cellulose material containing Scutellaria baicalensis dregs to prepare a modified plant fiber starch base material; S2: konjac gum is sequentially crushed, Superfine pulverization treatment to obtain a colloidal binder of composite deacetylated konjac gum; S3: mixing the colloidal binder of composite deacetylated konjac gum with the modified plant fiber starch base to form a mixed material; S4: put the mixed material into a molding mold for foam molding to make tableware, that is, to obtain the fully degradable ecological tableware. The tableware of the invention has good antibacterial performance, fully degradable, low cost and simple preparation method.

The invention discloses a method for preparing an EPDM rubber / polyaniline / polypropylene compound conductive material. The method comprises the following steps: (1) obtaining swelled EPDM rubber powder; (2) obtaining EPDM rubber / polyaniline compound conductive powder; (3) obtaining EPDM rubber / polyaniline / polypropylene compound granules; (4) obtaining the EPDM rubber / polyaniline / polypropylene compound conductive material. According to the method, a composite with high electrical conductivity can be obtained under the condition of lower polyaniline content, meanwhile better processability can be provided, and the influence that other performance of the composite is reduced caused by addition of the polyaniline content is effectively weakened.

The invention discloses a mixed solvent used as a packaging material for cellulose acetate film, which comprises the following composition in parts by weight: methanol: 6-20 parts, acetic acid: 6-20 parts, acetone: 1-50 parts, water: 10-20 parts 87 parts, first dissolve the cellulose acetate film into the prepared mixed solution, and make the cellulose acetate film in a swollen state by preparing the solvent in the solution. In this way, the cellulose acetate film can be softened, so that the cellulose acetate film can be attached to the surface of the package in the softened state, and then dried under natural conditions. The cellulose acetate film itself will not be damaged during the swelling process. The molecular structure is damaged. During the drying process, the solvent inside the molecule will volatilize, so that the cellulose acetate film will be released from the swelling state, and the cellulose acetate film will return to its original state and its original mechanical properties. It can be realized that the cellulose acetate film can be completely bonded to the package, including the corners can be completely bonded without wrinkles.

The invention discloses a method for swelling modified and enhanced pyrolysis of waste tires to produce oil and carbon black. The waste tires are swollen, and the swollen waste tires are pyrolyzed to prepare pyrolysis oil and carbon black; wherein, during the swelling process of waste tires , using microwave radiation, the swelling agent is the heavy component of the pyrolysis oil. The invention not only reduces the time for making oil from waste tires, but also improves the production efficiency of pyrolysis oil through swelling modification. At the same time, the cracked carbon pores are more developed.

The invention discloses a preparation method of an ethylene propylene diene monomer / polyaniline / high density polyethylene composite conducting material. The preparation method comprises the following steps: (1) adding an aniline monomer to ethylene propylene diene monomer powder, and stirring evenly to obtain the swelled ethylene propylene diene monomer; (2) obtaining ethylene propylene diene monomer / polyaniline composite conducting powder; (3) obtaining ethylene propylene diene monomer / polyaniline / high density polyethylene composite particles; (4) obtaining the ethylene propylene diene monomer / polyaniline / high density polyethylene composite conducting material. The method is capable of obtaining the high-electrical conductivity composite material in case of relatively low polyaniline content; meanwhile, the method provides good processability, and is capable of effectively weakening the influence of the degradation of other properties of the composite material due to the increase of the polyaniline content.