44results about How to "Conducive to large-scale continuous production" patented technology

The invention relates to a preparation method for a graphene reinforced copper-matrix electrical contact material. The preparation method comprises the steps that 1.0%-5.0% by weight of graphene and 95.0%-99.0% by weight of copper powder are subjected to ball milling for powder mixing and cold press molding, copper is smelted in an intermediate frequency furnace, copper-graphene intermediate alloy is added into molten copper, a composite is prepared through a casting process, and the composite is subjected to stress relief annealing and processing molding. According to the preparation method, graphene reinforcements are added into copper alloy to be used as a framework, so that the material has high hardness, high abrasion resistance, mechanical shock resistance and fusion-welding resistance. By adding rare earth, the oxidation resistance and electric arc burning resistance of the copper-alloy electrical contact material are improved.

The invention relates to the technical field of non-alcoholic beverages, in particular to a bamboo juice beverage which uses fresh bamboo, ophiopogon root, ginseng rootlets, gynostemma pentaphylla as raw materials, and the weight ratios of main materials are bamboo 67%-81%, ophiopogon root 12%-18%, ginseng rootlets 6%-10% and gynostemma pentaphylla 1%-5%. The process comprises disintegrating clean raw material, cooking with water with 1:3-10 of weight ratio of the raw material and water with temperature between 70 DEG C-100 DEG C, dissociating in 1-2 hours with mash liquid temperature between70 DEG C- 80 DEG C, filtering the mash liquid which is dissociated, then allocating through adding sweetener and acidity conditioning agent with the ph value of bamboo between 4-5.5, then filtering again, and disinfecting filter liquor by instant high temperature, and finally obtaining the bamboo juice beverage. The bamboo juice beverage combines the nutrient compositions of bamboo, ophiopogon root, ginseng rootlets and gynostemma pentaphylla, which plays a certain health care role for human bodies, and is suitable to be used as cold drink, and is particularly suitable for patients with hypertension, hyperlipemia, and diabetes mellitus and fat people.

The invention discloses a modified resin, raw material composition, preparation method, foaming material and application. The raw material composition includes resin and epoxy polyfunctional monomer, the weight ratio of the resin and the epoxy polyfunctional monomer is 100:(0.5-5), and the resin is that the active group is located at the chain end based linear resin. The present invention can conveniently and efficiently modify the resin whose active group is located at the end of the chain through the reaction of the functional group. The prepared modified resin has high melt strength and can achieve good foaming, film blowing and other processing and molding. Effect.

The invention discloses a making method of 1, 2-propanediol under mild condition, which is characterized by the following: adopting copper, zinc and manganese and or aluminium catalyst; aerating glycerin and hydrogen continuously from the top of reactor; hydrogenating glycerin at 200-250 deg.c under 2.5-5Mpa; outputting and collecting reacting product from the bottom of reactor continuously; separating gas; returning to recycle; setting the weight rate of metal element of catalyst at 16-48:24-48:0.15-4:0-8.

The invention discloses a potassium chloride and ammonium nitrate double decomposition and circulation method for producing high quality potassium nitrate. According to the method, potassium chloride and ammonium nitrate are taken as the raw materials, and the method comprises steps of raw material preparation, potassium nitrate crystallization, foam floatation and separation, potassium nitrate refinement, and ammonium chloride crystallization. The method is developed on the basis of conventional potassium nitrate production technology by improving part of the technology; wherein in the foam flotation and separation technology, in the presence of a floatation reagent (C12-C20 higher straight-chain aliphatic amine) and in a certain pH value range, the ammonium chloride and coarse potassium nitrate can be separated through foam entrainment; in the potassium nitrate refinement, the refined potassium mother liquid in the previous circulation is used to wash the coarse potassium nitrate, and then potassium nitrate is purified by sodium carbonate. In one aspect, the conventional potassium nitrate production technology is optimized, the potassium nitrate quality is improved, and the impurity content of the potassium nitrate product is greatly reduced. In the other aspect, the water using amount is reduced, the labor intensity is also reduced, and the production cost is saved. The industrial grade KNO3 mass content is not less than 99.7%, the content of Cl<-> is not more than 0.01%, and the content of NH4<+> is not more than 0.03%. the method has a wide application value and can generate prominent social benefit and economic benefit.

The invention discloses a method for preparing a long-chain branch polylactic acid resin by combination of a two-step function group reaction and a linear enantiomer polylactic acid. The method comprises the following steps of carrying out melting of a linear polylactic acid resin and a linear enantiomer polylactic acid, adding an anti-oxidant, an anhydride polyfunctional monomer and an epoxy polyfunctional monomer into the melted linear polylactic acid resin and the linear enantiomer polylactic acid, uniformly mixing, and carrying out melt blending until a reaction is finished to obtain the long-chain branch polylactic acid resin. The method has the advantages that a polylactic acid material having obviously improved melt strength is obtained by a two-step function group reaction having a fast high-temperature reaction rate in the presence of a less amount of a linear enantiomer polylactic acid so that good foaming film-blowing processing molding effects are obtained; and through adjustment of use ratios of two functional monomers and adjustment of linear enantiomer polylactic acid content and reaction conditions, a branching degree is controlled to a certain degree.

The invention discloses a method for preparing a long-branch chain polylactic resin by combination of a function group reaction and a linear enantiomer polylactic acid. The method comprises the following steps that a linear polylactic acid resin and a linear enantiomer polylactic acid are molten; the melt, an antioxidant and an epoxy polyfunctional monomer are mixed uniformly; and the mixture is subjected to melt blending until a reaction is finished so that the long-branch chain polylactic resin is obtained, wherein 1 to 11.1 parts of the linear enantiomer polylactic acid and 0.1 to 1 part of the epoxy polyfunctional monomer are used. Through utilization of a function group reaction having a high reaction rate at a high temperature, under the condition of a small amount of the linear enantiomer polylactic acid, the long-branch chain polylactic resin as a polylactic acid material of which melt strength is improved obviously is obtained. The long-branch chain polylactic resin has good foaming film-blowing molding effects. Through adjustment of a use amount of the epoxy polyfunctional monomer, the content of the linear enantiomer polylactic acid and reaction conditions, the method realizes branching degree control to a certain degree.

The invention discloses a trichoderma spore powder as well as a preparation method and application thereof. The trichoderma spore powder contains trichoderma spore powder and a drying aid, wherein the trichoderma spore powder is the spore powder of Trichoderma sperellum T1 which is preserved in the general microorganism center of CCCCM (China Committee for Culture Collection of Microorganisms) and has the preservation number of CGMCC NO: 3531 and a rDNA ITS region segment sequence shown in SEQ ID NO:1; the drying aid is one or more of beta-cyclodextrin, potato starch and soluble starch. The trichoderma spore powder has an effective prevention and control effect on banana vasicular wilt, and has a remarkable antagonism effect on various pathogenic funguses, especially on soil-borne funguses. The preparation time is saved with the preparation method of the trichoderma spore powder, which can be used for preparing the trichoderma spore powder which has high density, high germination rate and high drying efficiency and is easy to store, transport and use.