35results about How to "Production conditions are easy to achieve" patented technology

The invention relates to a solid lubricant glycan derivative for a drilling fluid. Raw materials of the derivative comprise, 30-40 parts of hydroxypropyl guanidine gum, 3-4 parts of propylene epoxide,0.1-0.15 part of sodium hydroxide, 20-30 parts of dodecyl alcohol, 0.15-0.2 part of a catalyst, 10-20 parts of white oil, 2-5 parts of a surfactant, 0.1-2 parts of an antifoaming agent, 10-20 parts of mica powder, 1-3 parts of a bactericide, 6-10 parts of ethanol and 10-25 parts of water. A preparation method includes the steps that the hydroxypropyl guanidine gum, the sodium hydroxide and the water are added into a reaction still and stirred continuously, and the propylene epoxide is added for stirring, refluxing and a reaction; a reaction solution is heated, the catalyst is added, and a mixed solution of the ethanol and the dodecyl alcohol is added under stirring for a reaction; the reaction material solution is cooled to the room temperature, the white oil, the surfactant, the antifoaming agent, the mica powder and the bactericide are added, stirred uniformly, dried and ground into powder, and then the derivative is obtained. The lubricating coefficient reduction rate is higher than or equal to 90%, the derivative has good high-temperature drop reduction performance and salt resistance, the preparation conditions are easily achieved, and the derivative is environmentally friendly.

The invention discloses a method for preparing poly(arylene ether nitrile) resin, which belongs to the technical field of high polymer materials. The method comprises the following steps of: finishing a reaction in a reaction kettle under normal pressure under the actions of a catalyst and a dehydrating agent by taking 2,6-dichlorobenzonitrile and aromatic dicarboxylic phenol as raw materials andtaking N-methyl pyrrolidone as a solvent; pressurizing and atomizing solution after dilution to a precipitating agent for precipitating; after heating, stirring and refluxing a precipitate and the precipitating agent to finish solvent extraction, performing solid-liquid separation by using a centrifugal machine; allowing liquid to enter a rectifying tower for rectifying and recovering the solvent; and drying solid after washing with boiling water to obtain the poly(arylene ether nitrile) resin of the invention. The method has the characteristics of easily implemented production conditions, and safe and environmentally-friendly production process. The poly(arylene ether nitrile) resin prepared by adopting the method of the invention has the characteristics of high purity and stable performance, and can be applied to the field of aerospace, electronics, machinery, medical treatment, chemical industry and the like.

A bisphenol A type polyarylene sulfide ether nitrile resin and a preparation method thereof belong to the technical field of polymer materials. The invention uses 2,6-dichlorobenzonitrile, sodium sulfide and bisphenol A as raw materials, uses N-methylpyrrolidone as a solvent, and completes the reaction in a reactor under normal pressure under the action of catalyst potassium carbonate and dehydrating agent toluene. After the reaction solution is precipitated by the precipitant, the particles obtained by pulverizing the precipitate with a pulverizer are ground in a colloid mill to obtain an emulsified fine powder. Then soak the fine powder in an organic solvent and separate the solid from the liquid in a centrifuge. The liquid enters a rectification tower to rectify and recover the solvent. The solid is washed with boiling water and then dried to obtain the bisphenol A polyarylene sulfide ether nitrile resin of the present invention. The production conditions of the invention are easy to realize, and the production process is safe and environment-friendly. The bisphenol A type polyarylene sulfide ether nitrile resin prepared by the method of the invention has stable performance and can be applied to the fields of aerospace, electronics, machinery, medical treatment, chemical industry and the like.

The invention relates to the field of graphene quantum dots, in particular to a solution acidity-alkalinity regulating method based on a graphene quantum dot. The solution acidity-alkalinity regulating method comprises the following steps: a, preparing the graphene quantum dot; and b, regulating the solution acidity-alkalinity under illumination by the graphene quantum dot prepared in step a. Thegraphene quantum dot is prepared by adopting the following steps: 1, mechanically mixing a graphite powder lump with a molten salt catalyst; 2, performing preheating treatment on the mixture obtainedin step 1 and preserving heat; 3, directly heating the mixture after heat preservation in step 2 and preserving heat; 4, after cooling the mixture obtained in step 3 to the room temperature, performing water soaking treatment to obtain a suspension liquid; and 5, performing centrifugal filtration on the suspension liquid obtained in step 4 to obtain a graphene quantum dot product. The preparationmethod for the graphene quantum dot in a pesticide detection method is low in cost, high in degree of graphitization, and high in finished product quality, and therefore, the solution acidity-alkalinity can be effectively regulated, and the graphene quantum dot is suitable for large-scale production.

The invention relates to the field of graphene quantum dots, in particular to a preparation method of an ammonia electrochemical synthesis catalyst based on graphene quantum dots. The preparation method includes the steps of firstly, mechanically mixing graphite powder lumps and a fused-salt catalyst, wherein the fused-salt catalyst is the mixture of cesium carbonate fused salt and fused salt containing iron and molybdenum; secondly, subjecting the mixture obtained in the first step to thermal treatment and heat preservation; thirdly, directly heating the mixture obtained after the heat preservation in the second step, and performing heat preservation; fourthly, cooling the mixture obtained after the third step to room temperature, and soaking with water to obtain a suspension; fifthly, subjecting the suspension obtained in the fourth step to centrifugal filtering to obtain the ammonia electrochemical synthesis catalyst. The ammonia electrochemical synthesis catalyst is low in preparation cost, high in graphitization degree, good in quality, high in ammonia synthesis catalytic efficiency and applicable to large-scale production.

The invention relates to the field of graphene quantum dots, and particularly relates to a graphene quantum dot and a preparation method thereof. The preparation method of the graphene quantum dot comprises the following steps: (1), taking a graphite powder block to mechanically mix with a molten salt catalyst; (2), taking a mixed material in the step (1) to carry out preheating treatment and heatpreservation; (3), taking the mixed material subjected to the heat preservation in the step (2) to directly heat up and carry out the heat preservation; (4), cooling the mixed material in the step (3) to the room temperature, and then carrying out water immersion treatment to obtain suspension liquid; and (5), taking suspension liquid in the step (4), and carrying out centrifugal filtration to obtain a graphene quantum dot product. The preparation method of the graphene quantum dot, which is provided by the invention, has the advantages of low manufacturing cost, high graphitization degree, and good finished-product quality, and is applicable to large-scale production.

The invention relates to an industrial production method for semi-crystal poly(aromatic ether nitrile), which belongs to the field of polymer material. The method comprises the following steps: 2, 6-dichloro benzonitrile and hydroquinone are taken as raw materials; anhydrous potassium carbonate is taken as a catalyst; in the presence of a solvent and a dehydrating agent, the raw materials and thecatalyst react under atmospheric pressure to obtain the poly(aromatic ether nitrile) homopolymer with low molecular weight and regular chain segments; and then the molecular weight of polymer is increased through pressurization, so as to obtain the semi-crystal poly(aromatic ether nitrile) polymer with high molecular weight. Due to the increase of crystallinity and molecular weight, the mechanical properties and heat resistance of the semi-crystal poly(aromatic ether nitrile) polymer are obviously improved.

The invention belongs to the field of polymeric nanocomposites and specifically relates to a poly(aryl ether nitrile) composite material and its preparation method. A first technical problem to be solved in the invention is to provide the poly(aryl ether nitrile) composite material with good mechanical strength and wear resistance. The poly(aryl ether nitrile) composite material is prepared by adding graphene microchips into poly(aryl ether nitrile) resin, wherein, the addition amount of the graphene microchips is no more than 10% of the weight of the poly(aryl ether nitrile) composite material. The poly(aryl ether nitrile) composite material prepared in the invention has excellent comprehensive performance: a tensile strength the material is 80 to 120 MPa, elongation at break is 8 to 25%, a flexural strength is 120 to 170 MPa, a flexural modulus is 3200 to 4400 MPa, an impact strength is 6 to14 J / m<2>, the coefficient of friction is 0.3 to 0.5, and resistance to a high temperature as high as 500 DEG C is obtained; the composite material not only has substantially improved mechanical properties and wear resistance but also reduces application cost of poly(aryl ether nitrile) products.

The invention discloses an aromatic nitrile-based special resin containing a benzoxazine ring and an industrial preparation method thereof. It is obtained by pre-opening the aromatic nitrile-based special resin containing a benzoxazine ring in a solvent, and then co-polymerizing it with a benzoxazine resin of the corresponding structure; wherein: the aromatic nitrile group containing a benzoxazine ring Special resin: 50-95 parts; benzoxazine resin: 5-50 parts; solvent: 100-300 parts. The invention adopts solvent copolymerization reaction at normal pressure, the production conditions are easy to realize, and the production process is easy to control. The aromatic nitrile-based special resin containing benzoxazine ring is used for copolymerization with benzoxazine resin, and both resins contain benzoxazine. ring, compatible in molecular structure, to obtain aromatic nitrile-based special resin and benzoxazine resin copolymer resin containing benzoxazine ring, integrating the excellent performance of aromatic nitrile-based special resin and the excellent processing performance of benzoxazine resin In one; after the copolymerization, the solvent can be recycled, which is safe and environmentally friendly.