226results about How to "No crystallization" patented technology

The invention discloses a compounding and a preparation method for lead-free electronic slurry used for a solar silicon photocell; according to the mass percentage, the slurry is obtained by preparing 70 to 75 percent of aluminium powders, 20 to 25 percent of organic adhesive, 1 to 5 percent of inorganic glass powders and 1 to 5 percent of additives; the aluminium powder is ball-shaped aluminium powder with the surface covered by an aluminium nitride protection layer, with the purity not less than 99.9 percent and the average grain size of 2 to 6 microns; simultaneously, organic adhesives consisting of ethyl cellulose, resin, hexadecanol, diethyleneglycol monomethyl ether, diethyleneglycol monobutyl ether, terpineol and n-butyl alcohol are added into the aluminium powder; the inorganic glass powder is silicon dioxide, boracic acid, alumina, antimony oxide and zirconia; the additive consists of Span and pump oil. The product prepared by the method of the invention has no dust generation or aluminium peeling phenomenon and achieves the requirement of no lead and environmental protection.

The invention discloses a high-concentration major element liquid water-soluble fertilizer and a preparation method thereof. The fertilizer comprises the materials in parts by weight: 7-10 parts of dipotassium hydrogen phosphate, 18-20 parts of urea, 8-11 parts of potassium dihydrogen phosphate, 5-8 parts of potassium permangenate, 24-28 parts of potassium formate, 1-3 parts of EDTA-Zn, 0.5-2 parts of instant boron, and the balance water. The method comprises the steps: under the ordinary pressure and in a reaction kettle, firstly stirring potassium permangenate, potassium formate and potassium dihydrogen phosphate for 2 h according to the formula ratio under the condition of the temperature of 80 DEG C, adjusting the temperature to 45 DEG C, stirring for 0.5 h, then dissolving dipotassium hydrogen phosphate and urea in the solution according to the set formula, after the materials are dissolved completely, adding a proper amount of instant boron and EDTA-Zn, heating to dissolve, after reaction dissolution of the materials according to the formula ratio is completed, cooling to the room temperature, packaging, and thus obtaining the major element liquid water-soluble fertilizer product. The process is simple, the raw material cost is low, and the product is suitable for requirements of current dropper devices and can be widely popularized.

The invention relates to a hyperbranched polyester lithium ion battery gel electrolyte and a preparation method thereof. The gel electrolyte is formed by mixed liquor prepared from 5-30 percent by mass of hyperbranched photopolymer resin, 5-25 percent by mass of cross-linking agent, 1-10 percent by mass of initiator, 20-50 percent by mass of plasticizer, 20-50 percent by mass of lithium salt and the like by using a radiation crosslinking method or a heating crosslinking method and the like. In the invention, the hyperbranched structure of a hyperbranched polyester can effectively prevent chain segments from being crystallized, whereas the molecular conformation similar to a spheric shape can increase the free volume of the polyester; bigger space and fewer -COO- and ether bond structures among branch points of the hyperbranched polyester have very strong interreaction with oxygen in the carbonic ester plasticizer, and therefore, a large amount of liquid electrolyte can be contained, and the gel electrolyte has very high dissolving capacity on salts, which is beneficial to ionic migration and the increase of electrical conductivity so that a lithium ion battery prepared from the hyperbranched polyester lithium ion battery gel electrolyte has long service life, small internal resistance, better specific energy, simple preparation process and no pollution.

The invention discloses a crystal form G of ibrutinib. The crystal form G is characterized in that X-ray powder diffraction (X-RPD) which adopts Cu-Kalpha radiation and is represented with a 2theta angle has diffraction peaks in positions at angles of 5.0 degrees plus or minus 0.2 degrees, 7.3 degrees plus or minus 0.2 degrees, 10.1 degrees plus or minus 0.2 degrees, 12.0 degrees plus or minus 0.2 degrees, 13.2 degrees plus or minus 0.2 degrees, 17.1 degrees plus or minus 0.2 degrees, 19.5 degrees plus or minus 0.2 degrees, 20.8 degrees plus or minus 0.2 degrees, 22.3 degrees plus or minus 0.2 degrees, 24.3 degrees plus or minus 0.2 degrees, 27.4 degrees plus or minus 0.2 degrees and 31.2 degrees plus or minus 0.2 degrees. Related solvents in a preparation process of the crystal form G are cheap, the conditions are mild, the operation is simple, good controllability and reproducibility are realized, further, the prepared crystal form has great stability, the HPLC (high performance liquid chromatography) purity is higher than 99%, and the phenomenon of crystal transformation can be avoided; besides, the solubility is high, the dissolubility is good, and the bioavailability is high.

The invention discloses a Ce-based amorphous alloy and a preparation method thereof. The Ce-based amorphous alloy comprises the following components according to the atomic percentage: 60-80 percent of Ce, 0.1-20 percent of Ga and 0.1-25 percent of M, wherein M is selected from one or more of Pd, Cu, Zr, Ti, Hf, Fe, Co, Ni and Nb; and the Ce-based amorphous alloy has a minimum amorphous critical diameter of 1-14 millimeters. The Ce-based amorphous alloy provided by the invention has strong glass-forming ability; the crystallization is avoided when the alloy is heated in a supercooled liquid phase region; the amorphous alloy with bulk shape can be very easily obtained; and as known now, an amorphous rod with a maximum diameter of 14 mm can be obtained through component optimization by utilizing a water-cooled copper mould technology.

The invention relates to a low-temperature-resistant stone dry hanging adhesive and a preparation method thereof, and aims to provide a low-temperature-resistant low-production-cost stone dry hanging adhesive and a preparation method thereof. The low-temperature-resistant stone drying hanging adhesive comprises a resin adhesive A and a curing agent B, wherein the resin adhesive A is composed of E-44 epoxy resin, E-51 epoxy resin, diluter, toughener, barium sulfate, heavy calcium carbonate powder and light calcium carbonate powder. The preparation method comprises the following steps: uniformly stirring the E-44 epoxy resin, E-51 epoxy resin and diluter, sequentially adding the toughener, barium sulfate heavy calcium carbonate powder and light calcium carbonate powder, and stirring uniformly to obtain the resin adhesive A. The invention is low in raw material cost, and can resist low temperature without adding the high-cost bisphenol F-type epoxy resin; the resin adhesive A component can not crystallize even at -15 DEG C; and the prepared stone dry hanging adhesive has the advantages of high strength and low manufacturing cost.

The invention discloses a method for synthesizing silicalite-1 zeolite membranes. The method comprises: preparing synthetic fluid of crystal seeds, performing hydrothermal synthesis for 0.5 to 3 days, obtaining crystal seeds uniform in particle size and preparing a crystal-seed solution; impregnating a carrier with the crystal-seed solution for 5 to 10 seconds, drying and roasting the obtained product; preparing template-free zeolite membrane mother liquor, placing diaphragms containing crystal-seed layers in the mother liquor and performing hydrothermal reaction in a reaction kettle for 4 to 8 hours; and washing and drying membranes. As the synthetic fluid has no template, roasting is not needed after secondary growth, so that defect-free pure silicon zeolite membranes can be obtained. The zeolite membranes are resistant to heat and chemicals, have good stability, and can be applied to the permeation and separation of gas and liquid steam at high temperature and other aspects.

The present invention relates to a crystalline form I of Olaparib and a preparation method therefor. The present invention particularly provides a crystalline form I. The crystalline form I is characterized in that the X-ray powder diffraction pattern of the crystalline form I has characteristic peaks when the 2 theta value is 6.4 degrees + / - 0.2 degree, 12.7 degrees + / - 0.2 degree and 15.1 degrees + / - 0.2 degree. The crystalline form I provided by the present invention is better in stability, and has important values for optimization and development of the drug in the future.

The invention discloses high-inflaming-retarding modified phenolic resin foamed plastic and a preparation method thereof. The high-inflaming-retarding modified phenolic resin foamed plastic comprises the following raw materials in parts by weight: 100 parts of modified phenolic resin, 5-20 parts of a surfactant, 6-15 parts of a foaming agent, 2-8 parts of an accelerant, 10-20 parts of a flexibilizer and 10-18 parts of a curing agent. The prepared high-inflaming-retarding modified phenolic resin foamed plastic has excellent flame retardant property and is improved to a higher extent in tenacity and strength.

The invention discloses a preparation method of a low-alkali polymer high-efficient liquid setting-accelerator for sprayed concrete. The preparation method comprises the following steps: (1) preparing an aluminate mother solution; (2) preparing a modifying agent; (3) preparing a low-alkali polymer high-efficient liquid setting-accelerator. The disclosed low-alkali polymer high-efficient liquid setting-accelerator has a uniform and stable property and strong adaptability; the mixing amount is 2 to 4% of the cement mass, the initial setting time is within 2 minutes, the final setting time is within 5 minutes, the strength loss in the later stage of concrete is within 10%; furthermore, the liquid setting-accelerator can efficiently reduce the dust amount and resilience value during the sprayed concrete construction and improves the strength of sprayed concrete.

The invention relates to a pharmaceutical composition of fulvestrant. The pharmaceutical composition comprises: (1) fulvestrant; (2) at least one pharmaceutically acceptable alcohol; (3) medium-chain triglyceride; and (4) a castor oil matrix.

The invention relates to the technical field of intermediate infrared rare earth doped luminescent glass application, and aims at solving the technical problem of providing a method for preparing oxygen fluorine chlorine tellurate glass with intermediate infrared fluorescence output at 4 mu m. The glass is good in glass forming property, high in infrared light transmission rate, good in luminescence property and beneficial to output of fluorescence and laser of 4 mu m. The oxygen fluorine chlorine tellurate glass prepared by using a fusion method is tellurate glass which contains zinc fluoride and zinc chloride, and due to the appropriate amount of contains zinc fluoride and zinc chloride, the hydroxyl content and the phonon energy in the system are greatly reduced, so that the forming capability of the glass is effectively improved, the doping amount of rare earth ions is increased, and the fluorescence service lives of the rare earth ions are prolonged. By adopting the doping amount of the external doping rare earth ions, namely, Ho<3+> and Yb<3+>, the pumping efficiency of 980nm is greatly improved, and tests show that the oxygen fluorine chlorine tellurate glass has remarkable fluorescence output at 4 mu m.

The invention discloses an oil removing and chromizing chemical agent compatibility and pollution reduction sprinkling system for slag reducing of the aluminum industry. An oil removing groove, a first non-flowing water washing groove set, a chromizing groove, a second non-flowing water washing groove set, a sprinkling groove and a drainage groove are included; an aluminum material sequentially passes through the oil removing groove, the first non-flowing water washing groove set, the chromizing groove, the second non-flowing water washing groove set, the sprinkling groove and the drainage groove; the oil removing groove and the second non-flowing water washing groove set are both communicated with the first non-flowing water washing groove set; oil removing liquid exists in the oil removing groove; chromizing liquid exists in the chromizing groove; the oil removing liquid and the chromizing liquid are mutually compatible; a first pump is further included; the sprinkling groove and thedrainage groove are both communicated with the second non-flowing water washing groove set through the first pump; and the first pump is used for pumping water in the sprinkling groove and the drainage groove into the second non-flowing water washing groove set. We pay attention to compatibility of selected components on the oil removing liquid for the first time. The oil removing and chromizingchemical agent compatibility and pollution reduction sprinkling system for slag reducing of the aluminum industry achieves waste water and waste slag zero emission during spraying and chromizing treatment and production water saving.

The present invention relates to the making process of electrolytic copper foil with great high-temperature elongation. The electroplating process uses acid copper sulfate electroplating solution containing gelatin not more than 1.5 ppm and chlorine ion not more than 20 ppm, and the electroplating solution makes it possible to raise the high-temperature elongation of the produced electrolytic copper foil and the copper foil is used in making multilayer printed circuit board without hot cracking, bending and distortion produced.

The invention provides a butadiene-isoprene co-polymer rubber which contains butadiene structure units and isoprene structure units, wherein a molar ratio of the butadiene structure units to the isoprene structure units is 0.06-4:1. Content of cis-1,4 structures is not less than 98% by more in the butadiene structure units. The content of cis-1,4 structures is not less than 98% by more and the content of trans-1,4 structures is 0% by more in the isoprene structure units. All the isoprene structure units are bonded in a head-tail manner. The invention also provided a preparation method of the butadiene-isoprene co-polymer rubber and the butadiene-isoprene co-polymer rubber prepared through the preparation method. The butadiene-isoprene co-polymer rubber is high in regularity so that the co-polymer rubber has a more excellent low-temperature performance.

The invention relates to nimodipine lyophilization dry emulsion for injection. Before freeze-dried or reconstituted, according to percentage concentration per 1000 ml of fat emulsion, the lyophilization dry emulsion contains 0.001 percent to 0.2 percent of nimodipine, 0.5 percent to 30 percent of oiliness solvent, 0.1 percent to 5 percent of emulsifier, 5 percent to 40 percent of the freeze-drying protective agent and 0.1 percent to 10 percent of isotonic regulator. The invention also relates to a preparation method of nimodipine lyophilization dry emulsion. The invention has the advantages that ethanol is avoided to decrease irritation; the product can be mixed with any proportion of water for injection, sodium chloride solution, glucose solution, blank fat emulsion or other aqueous solution without phenomena of precipitation or crystallization; in addition, compared with the fat emulsion, the lyophilization dry emulsion is more helpful to improve the stability of nimodipine and excipient of the nimodipine, thereby lowering the requirements of production, transportation and storage conditions and prolonging the period of validity.

The invention discloses a calcium gluconate injection, each liter of which contains 90 to 110g of calcium gluconate, 5 to 9g of lactic acid, 0.2 to 0.5g of calcium hydroxide, 9 to 11g of sodium hydroxide, 0.5 to 5g of sodium gluconate and the balance water for injection. The calcium gluconate injection is prepared according to the following steps: taking and boiling the water for injection; adding and stirring calcium gluconate to the water to dissolve; adding sodium gluconate, calcium hydroxide and lactic acid in turn; heating the mixture to boil and stirring to dissolve; adding the sodium hydroxide solution for adjusting the pH value; adding activated carbon; stirring the activated carbon evenly; standing and filtering the resultant ; adding the full quality of water for injection to the resultant; finely filtering the resultant to qualify; and encapsulating and sterilizing the resultant under high pressure. The calcium gluconate injection has strong stability and stable quality, and basically does not generate crystals within the storage period at low temperature.

The invention discloses a process technology for removing sulfur dioxide from boiler flue gas to produce an ammonium sulfate fertilizer. High-temperature flue gas is firstly cooled by a concentrating tower and then enters a desulfurizing tower (absorption tower), and the flue gas is desulfurized together with an ammonium sulfite solution in the desulfurizing tower and is exhausted. Desulfurized ammonium sulfite solution is sent to an oxidizing tower so that ammonium sulfite is thoroughly converted into ammonium sulfate, the ammonium sulfate enters the concentrating tower to perform countercurrent heat exchange with the flue heat, so that water in the ammonium sulfite solution is evaporated. After the concentration reaches supersaturation, ammonium sulfate crystals are separated out, and a suspension containing the ammonium sulfate crystals is spirally flowed, centrifuged and dried into the finished product. The invention effectively utilizes the low-grade heat energy of the flue gas, and the ammonium sulfate evaporation system is saved; oxidation is adopted outside the desulfurizing tower, so that the oxidation is more thorough; the desulfurizing tower is a packed tower, the specific surface area is increased, the liquid-air ratio is low, the circulating volume of the absorbing liquid is reduced, and the equipment saves more energy; and the absorbing liquid controls not to crystallize at low concentration, and the phenomena of bias current and packing collapse caused by packing crystallization are avoided.

The relates to a silicon-contained type liquid electrolytic degreasing agent which is characterized by comprising the following materials by weight percent: 20 to 50% of silicate, 20 to 60% of basic salt, 1 to 5% of chelon, 1 to 5% of surface active agent and the balance of water. The silicate is sodium silicate or potassium silicate; the basic salt is sodium hydroxide or potassium hydroxide; the chelon is one or two of sodium gluconate, disodium ethylene diamine tetraacetic acid or tetrasodium ethylene diamine tetraacetic acid; and the surface active agent is complex anionic surfactant NF-25. The invention has the advantages of easy control of technical requirements during use, good use effect, good satiability of liquid electrolytic degreasing agent products, no layering and crystallization phenomenon, strong detergency during electrolysis, few generated bubbles and convenient field operation.

The invention relates to a synthetic method of compound blocked polyisocyanates by using multiple sealants to compound and block terminal groups, which is characterized in that 300-600 parts of polyisocyanate ( by mass part, the same below), 50-350 parts of active methylene compound and 290-335 parts of solvent are stirred for 1-3 hours at a temperature of 50-90 DEG C; 50-350 parts of another active methylene compound is added to be stirred for 1-2 hours at a temperature of 50-90 DEG C; 20-130 parts of pyrazole derivative compound is added to be stirred at a temperature of 50-85 DEG C in batches until NCO groups can not be detected or NCO% is not higher than 0.2% (about 0.5-2 hours). Compared with the prior art, the invention has improved technology and obvious advantages.

The invention relates to a rubber material, and in particular to a rustproof rubber and a manufacturing method thereof. The rustproof rubber comprises by weight 45%-55% of a raw rubber, 3.0%-3.8% of an anti-rust agent, 0.7%-0.9% of an accelerant, 5.0%-7.0% of zinc oxide, 0.8%-1.2% of stearic acid, 5.0%-7.0% of DCP (dicumyl peroxide), 8.6%-9.6% of carbon black, 0.8%-1.2% of an antioxidant D and the balance of light calcium carbonate. When contacting with metal, the rubber provided by the invention can provide excellent rustproof protection to inhibit corrosion of metal and meanwhile avoid possible corrosion of the rubber during contact with the metal.

The invention belongs to the field of a pharmaceutical preparation, and particularly relates to a mixed carbohydrate-electrolyte injection and a preparation method thereof. A pH modifier of the injection is citric acid, and pH is 4.0-4.4. By controlling the dosage range of the pH modifier, the pH range of the finished product can meet the specification only by regulating the pH value for one time in the preparation process. In addition, according to the method, activated carbon is added only in the step, and the activated carbon is not added in the preparation process, so that the risk of introducing metal ions and other impurities through the activated carbon can be effectively avoided, and toxins in bacteria of the finished product are qualified. According to the method, the technology is further simplified, the production time and cost can be shortened and lowered, and the sterilized product has no crystallization or precipitation phenomenon. After being stored for 24 months, the 5-hydroxymethyl-furfural range of the injection is within 0.03-0.05, and the impurities are controlled at the extremely low level; after being stored for 24 months, the injection almost has no character change and is still colorless clear liquid compared with the injection which is stored for zero day.

The invention discloses a salicylic acid nanostructured lipid carrier, which comprises the following components in percentage by mass: 1 to 5% of salicylic acid, 10 to 30% of composite lipid material, 5 to 15% of emulsifier, and the balance of deionized water, wherein the composite lipid material is a solid-liquid lipid material, a solid lipid material is one or more of glyceryl monostearate, shea butter, acetylated monoglyceride and spermaceti wax, and a liquid lipid material is one or more of glyceryl caprylate caprate, diethyl sebacate, castor oil, and isopropyl myristate. The invention also discloses a preparation method and application of the salicylic acid nanostructured lipid carrier. Salicylic acid is embedded by a nanostructured carrier technology, so that large amounts of free salicylic acid are not in direct contact with the skin to reduce the irritation of the salicylic acid, and the release of salicylic acid is favorably controlled, and salicylic acid can be ensured to be effective at the surface concentration by utilizing controlled release and sustained release.

The invention discloses salts of a phenylalanine compound as shown in a general formula (I), and an amorphous form of the salts. In the general formula (I), M is as defined in the specification. The invention also discloses a preparation method and application for the above-mentioned salts. The salts can be applied in treatment of diseases associated with metabolic syndrome.

The invention discloses an organic acid super-roughening micro-etching solution with high copper content and application thereof, and relates to the technical field of printed circuit board treatment. The organic acid super-roughening micro-etching liquid comprises the following components in mass concentration: 10-70g / L of bivalent copper ions from a copper ion source, 10-180g / L of organic acid, 5-80g / L of chloride ions from a chloride ion source, 5-90g / L of a complexing agent, 0.0005-2g / L of a polyhydroxy compound, 0.0001-0.6 g / L of a water-soluble polymer and a solvent which is deionized water. Through innovation of the copper complexing agent and the polyhydroxy compound, the copper content of the organic acid super-coarsening micro-etching liquid can reach 50 g / L or above, the coarsening morphology of the copper surface under the high copper content is uniform, the color of the plate surface is uniform, and crystallization and separation of copper salt cannot be generated.

The invention discloses a riboflavine sodium phosphate composition injection and a preparation method thereof. The riboflavine sodium phosphate composition injection comprises riboflavine sodium phosphate, citric acid, sodium hydroxide and sodium chloride. Each injection contains 5 to 15mg of riboflavine sodium phosphate, 2.1mg of citric acid, 2 to 4mg of sodium hydroxide and 0.6 to 0.8mg of sodium chloride. The preparation method comprises the following steps: adding water used for injection into the citric acid for stirring and dissolving; adjusting the pH to about 6.2 with sodium hydroxide; adding sodium chloride for stirring to dissolve the sodium chloride; adding the water used for injection and 1g of active carbon; adding riboflavine sodium phosphate while stirring; after the riboflavine sodium phosphate is completely dissolved, complementing the water for injection until the total amount is completely complemented; performing filtering, refluxing, filling, nitrogen charge, melting to seal, sterilizing at a high temperature; and after reducing the temperature, detecting with lamps, packing and checking, and obtaining the finished product. The riboflavine sodium phosphate composition injection does not crystallize, has good clarity and stability, and is helpful for improving the yield of the product, reducing the market rick of the product and is better applied to clinical treatment.

The invention discloses an antioxidant acne-removing repair essence and a preparation method thereof. The essence contains a plurality of plant extract essences, wherein cannabidiol (CBD) of a hemp extract has good effects of resisting bacteria, diminishing inflammation, removing acnes, relieving, resisting oxidation and the like. However, the CBD is insoluble in water, so that the application field and the bioavailability of the CBD are limited. According to the invention, the fat-soluble CBD is prepared into the nanoscale cannabidiol liposome, so that the water solubility and stability of the CBD are improved, the transdermal absorption effect of the CBD is promoted, the CBD can quickly and effectively penetrate through the surface layer of the skin, directly reach the deep layer of theskin and be slowly released, and the effect of the CBD is more lasting. The essence disclosed by the invention does not contain hormones, artificial pigments, essences and other components, is safe and mild in formula, and has multiple beautifying and skin-care effects of resisting oxidation, removing acnes, relieving, resisting bacteria, diminishing inflammation, efficiently moisturizing, smoothing fine lines and the like.

The invention provides an EU-1 / ZMS-48 intergrowth zeolite and preparation and application thereof. The crystalline content of EU-1 in the molecular sieve is 10-96wt.%; the crystallization stable period of the intergrowth zeolite with different crystalline phase proportions at the crystallization temperature is not shorter than 18 hours, and fluctuation of the crystalline content in the stable period does not exceed 2%, wherein the crystallization temperature is 160-200 DEG C, more preferably 160-180 DEG C. According to the EU-1 / ZMS-48 intergrowth zeolite provided by the invention, by selecting a pure phase EU-1 molecular sieve with a high ratio of silicate to aluminium (SiO2 / Al2O3=100-infinity) as a seed crystal, controlled synthesis of the EU-1 / ZMS-48 intergrowth zeolite is realized, so that the intergrowth zeolite with different ratios of silicate to aluminium and different crystalline phase proportions is obtained; moreover, the obtained samples with different different crystalline phase proportions are long in crystallization stable period, thereby laying a foundation for further amplification and industrial application of the intergrowth zeolite.

The invention discloses a quartz crucible with a long service life and low deformation rate and a preparation method thereof. The quartz crucible comprises a quartz crucible body and a ceramic coating, the ceramic coating comprises a silicon oxide coating, a zirconium boride coating and a silicon nitride coating which are sequentially coated along the direction of the inner wall of the quartz crucible body; the silicon oxide coating is a nano silicon oxide liquid; wherein the zirconium boride coating comprises zirconium boride and nano silicon oxide liquid; and the silicon nitride coating comprises nano silicon carbide and nano silicon nitride. According to the quartz crucible with a long service life and low deformation rate and the preparation method thereof, the quartz crucible body iscoated with a coating, so that the situations of crystallization, cracking and deformation of the quartz crucible during crystal pulling high-temperature operation are avoided, and the quartz cruciblehas a long service life.

The invention discloses a preparation method of rosin, comprising the steps of mixing well pine oil with a solvent, heating a mixture for dissolving, and performing filtering to obtain pine oil solution; transferring the pine oil solution into a distilling pot; before distilling, subjecting a distilling device to airtightness detection; after determining that airtightness of the device is complete, adjusting degree of vacuum, performing heating for distilling, closing the device to obtain vacuum, filling inert gas into the device to obtain zero pressure, and removing turpentine oil from a turpentine oil tank; releasing vacuum of a vacuum regulator, performing slow heating, holding the temperature for distilling, filling inert gas into the device to obtain zero pressure, and collecting distillate which is rosin. The rosin prepared by a high-vacuum distilling method is light in color, high in softening point, free of crystal and good in quality; compared with a traditional steam distilling method, a production process of the rosin is simple and lower in production cost.