47results about How to "Substrate influence is small" patented technology

The invention provides an aluminum alloy corrosion resistance two-dimensional code marking method based on laser cladding. According to the method, a preset powder method is adopted for uniformly coating a layer of coating material on an aluminum alloy substrate; the coating material is formed by mixing nickel-based alloy powder, graphite powder, absolute ethyl alcohol and lacquer varnish; DM (digital matrix) codes are marked on the surface of the coating layer through laser so that the coating layer and a thin layer of the surface of the substrate are simultaneously melted, and a surface coating which has ultra-low dilution degree and forms metallurgical bonding with the substrate is formed after fast solidification; then, an ultrasonic cleaner is used for cleaning away unmarked parts, so that a DM code mark realizing salt spray corrosion resistance is formed. The salt spray corrosion resistance performance of the generated DM code mark is greatly improved, and in addition, the influence on part substrates outside the DM code mark region is smaller. Compared with other methods for improving the corrosion resistance of the DM code, the aluminum alloy corrosion resistance two-dimensional code marking method has the advantage that the efficiency is greatly improved.

The invention relates to a lead-containing paint coating standard substance and a preparation method thereof. The lead-containing paint coating standard substance comprises thermoplastic acrylic resin, auxiliaries (pigment, a dispersing agent and the like), filler, a solvent and lead-containing compound salt. The preparation method of the lead-containing paint coating standard substance comprises the following steps of: grinding the thermoplastic acrylic resin into powder by adopting a grinding machine; placing the thermoplastic acrylic resin powder, the pigment, the dispersing agent, the filler and the solvent into a stirred tank in weight proportion, stirring by adopting a stirring machine, and dispersing to obtain thermoplastic acrylic acid paint mixture; then adding a low acid aqueous solution containing a lead element into stirred and dispersed paint mixture, uniformly smearing the paint mixture onto a glass plate, and placing the glass plate into a drying oven to be dried; and grinding the dried mixture to obtain the lead-containing paint coating standard substance. For testing, influence on a basal body is small, uniformity of the lead-containing paint coating standard substance is good, batch production can be realized, speed is high, and the obtained lead-containing paint coating standard substance is high in stability.

The invention relates to a pellet compound feed used for fully grown sea cucumber, comprising the following components: soybean meal, import fish meal, shrimp meal, cuttlefish powder, scallop brim, calcium dihydrogenphosphate, leaven peptide powder, hizikia fusiforme, probiotics, marine rainbow meat, sea mud, choline chloride, shell powder, gulfweed, sea mustard powder and sea cucumber premix. The raw material components are mixed to be uniform in proportion and are subjected to smashing and pelleting to be prepared into an fully grown sea cucumber compound feed. The feed disclosed by the invention is full of nutrients, the ingredients are matched in a balanced manner, the feed is beneficial to balanced digestive absorption, growth and conversion of sea cucumber, and the feed conversion rate is high.

The invention discloses a method for determining a ratio of lead isotopes in a sample of different parts of a waxberry tree and identifying an origin of waxberry. The method comprises the following steps: measuring a sample of different parts of the waxberry tree, preprocessing the sample, digesting the sample by virtue of microwave, purifying the sample by utilizing SR resin-B resin, eluting to obtain a lead sample, and then detecting the lead sample by adopting a thermal surface ionization mass spectrometry to obtain a ratio of lead isotopes in the lead sample. A correlation distribution map can be drawn according to the ratio of the lead isotopes of the sample of the same part in different origins and can be used for identifying the origin situation of the waxberry tree sample of an unknown origin. The thermal surface ionization mass spectrometry is first used for rapidly determining the ratio of lead isotopes in the sample of different parts of the waxberry, a scientific, independent and invariable identify identification information can be provided for tracking the waxberry source, and the method is reliable and stable. Particularly for the products of a large-sized area, the difference can be effectively distinguished. The method is high in detection efficiency; moreover, the detection result is high in precision and good in effect.

The invention provides a method for analyzing pesticide residues in tobacco via heart-cutting two-dimensional chromatography-mass spectrometry combination. Sample pretreatment is carried out on the tobacco, and qualitative and quantitative analysis is carried out on a sample to be tested obtained by the pretreatment by adopting a heart-cutting two-dimensional chromatography-mass spectrometry combined system, wherein the heart-cutting two-dimensional chromatography-mass spectrometry combined system comprises a first-dimensional chromatographic column, a current divider, a loop, a two-dimensional chromatographic column and a mass spectrometer which are orderly connected with each other along a sample injection method. The invention further provides the heart-cutting two-dimensional chromatography-mass spectrometry combined system and a use method thereof. The method for analyzing the pesticide residues in the tobacco via the heart-cutting two-dimensional chromatography-mass spectrometrycombination provided by the invention can effectively purify and remove macromolecular interfering substances, maintain the repeatability, stability and accuracy of large-scale sample pesticide residues, especially large sample-size pesticide residue test, and can be used for long-term, large sample amount and multi-component analysis and detection of tobacco pesticide residues.

The invention discloses a pretreatment method for the ultrasonic extraction of multiple antibiotics in a sediment. The pretreatment method comprises the following steps: 1, freeze-drying the sedimentor sandy soil, pulverizing, and screening by a 200-mesh sieve to obtain a sample; 2, putting the sample obtained in the step 1 and an internal standard liquid in a centrifuge tube; 3, adding an extraction agent into the centrifuge tube, conducting ultrasonic treatment for 15-30 minutes, then centrifuging, obtaining a liquid supernatant, and repeating for at least twice; 4, evaporating the liquid supernatant obtained in the step 3 until the volume no longer changes, then redissolving with ultrapure water to 300 mL, and regulating the pH to 2-9 to obtain a water sample; and 5, extracting the sample. The pretreatment method is relatively low in cost, and overcomes the defects of loss of the antibiotics caused by relatively poor stability of the antibiotics and relatively high temperature in the accelerated solvent extraction process.

The invention provides a mass spectrometer that comprises a collision cell having an axial electric field that enhances transmission of light ions, especially elemental ions, through the collision cell, relative to heavier ions. The invention also provides methods of mass spectrometry that employ an axial electric field that is provided in a collision cell.

The invention discloses a method for preparing a ceramic coating, which relates to the fields of chemical industry, environment and material processing. Ceramic powder is used as a raw material to prepare a ceramic coating, especially a titanium oxide photocatalytic coating, by means of a cold spraying method. If titanium oxide bulk powder or titanium oxide agglomerated powder is used as raw material, the titanium dioxide coating is deposited on the substrate by cold spraying. TiO prepared according to the present invention 2 The coating can be formed at a temperature of less than 600°C, and the structure and properties of the original powder can be better transplanted into the coating, especially in the preparation of nanostructured coatings and high-performance photocatalytic coatings. outstanding superiority. The method has the advantages of simple process, low production cost, good controllability and little influence on the matrix. The implementation of the present invention can prepare ceramic coatings with more superior structure and performance, especially can prepare high-performance nanostructure coatings, especially photocatalytic titanium oxide coatings.

The invention discloses a lead-containing paint coating standard substance which is prepared by adding a substance, analytically-pure lead naphthenate, which is used for introducing lead element, to acrylic resin paint and mixing the components. The invention also discloses a method of preparing the lead-containing paint coating standard substance. In the invention, the lead element compound, lead naphthenate, which is high in compatibility with a paint base material, is introduced according to simulation of a paint production process. For test, the material in the invention is similar to a coating material on toys in China, so that a less base material influence is achieved. The standard substance is good in uniformity, is high in accuracy and stability, allows large-scale production and is quick in production.

The present invention relates to a juvenile abalone universal puffed composite feed, which is composed of imported fish meal, brewer's yeast, soybean meal, undaria finnatifida, flour, dihydrogen phosphate calcium, choline chloride, casein, and abalone premix component. The raw materials are mixed according to a ratio, crushed, then sieved to products with different meshes according to the market demand, and packaged. The feed is comprehensive in nutrition, is balance in various component collocation, is conducive to the balanced digestion and absorption of abalone, and is high in growth conversion and feed conversion rate.

The invention relates to a lead-containing standard substance and a preparation method thereof. The standard substance is a mixture formed by adding analytically pure lead chromate into polyvinyl or acrylic resin paint and fly ash. The preparation method comprises the following steps of: putting the paint and the fly ash into a vacuum heating stirrer gradually according to a mass ratio of 2:1, making the lead content according to needs, putting the pure lead chromate of the content into the stirrer, letting the heating stirrer to perform stirring for 2-4h, slowly heating the mixture to make the temperature of the mixture gradually raised to 50-60 degrees, and performing stirring for 1-2h, then taking the mixture out, smearing the mixture on a glass plate, placing the glass plate in a drying box, then carrying out scraping and crushing, conducting sieving by a 0.5mm sieve, and performing complete and uniform mixing, thus obtaining the lead-containing paint coating standard substance. The standard substance provided in the invention has good uniformity, can realize fast mass production, and the prepared lead-containing paint coating standard substance has high stability.

The invention relates to compound feed for adult sea cucumbers. The feed comprises: soybean meal, imported fish meal, shrimp meal, squid meal, scallop skirts, monocalcium phosphate, glycolysized protein powder, Doederlein's Spikemoss Herb, probiotics, marine rainbow meat, choline chloride, shell powder, sea mud, sargassum, sweet potato vine, Sea mustard powder, and sea cucumber premix. The above components are mixed uniformly according to the weight ratio and then subjected to crushing and mixing, thus obtaining the adult sea cucumbers compound feed. With the advantages of comprehensive nutrition and balanced component allocation, the compound feed is in favor of balanced digestion and absorption, as well as growth and transformation of abalones, and has a high conversion rate.

The present invention proposes a method for marking aluminum alloy corrosion-resistant two-dimensional codes based on laser cladding. The aluminum alloy substrate is evenly coated with a layer of nickel-based alloy powder, graphite powder, absolute ethanol and The coating material mixed with varnish is marked with DM code on the surface of the coating by laser to melt it and a thin layer on the surface of the substrate at the same time, and after rapid solidification, a surface coating with extremely low dilution and metallurgical bonding with the substrate is formed. Then use an ultrasonic cleaning machine to clean the unmarked part, so as to form a DM code mark that is resistant to salt spray corrosion. The salt spray corrosion resistance of the DM code mark produced by the invention is greatly improved, and has little influence on the part matrix outside the DM code mark area. Compared with other methods for improving the corrosion resistance of the DM code, the efficiency of the invention is also greatly improved.

The invention discloses a lead-containing paint coating standard substance which is prepared by adding a substance, analytically-pure lead naphthenate, which is used for introducing lead element, to acrylic resin paint and mixing the components. The invention also discloses a method of preparing the lead-containing paint coating standard substance. In the invention, the lead element compound, lead naphthenate, which is high in compatibility with a paint base material, is introduced according to simulation of a paint production process. For test, the material in the invention is similar to a coating material on toys in China, so that a less base material influence is achieved. The standard substance is good in uniformity, is high in accuracy and stability, allows large-scale production and is quick in production.

The invention relates to a general formulated feed used for juvenile sea cucumber. The feed is composed of soybean meal, artemia, fish meal, squid meal, sargassum thunbergii, gulfweed, pinnatifid undaria, calcium dihydrogen phosphate, probiotics, mussel flesh, spiral algae, chloride choline, shell powder, and a sea cucumber premix. The raw materials are well mixed according to a certain ratio; and the mixture is crushed and packaged, such that the general formulated feed used for juvenile sea cucumber is prepared. The feed has the advantages of comprehensive nutrients and balanced component formulation. With the feed, juvenile sea cucumber balanced digestion and absorption, and growth and transformation can be promoted. A feed conversion rate is high.

The invention discloses compound feed with a function of leading abalone shells to be purple. The compound feed is prepared from the following components in percentage by weight: 10-20 percent of fishmeal, 4-6 percent of soybean protein concentrate, 5-8 percent of casein, 1-3 percent of saccharomyces cerevisiae, 8-12 percent of spirulina, 1-6 percent of dunaliella salina, 30-45 percent of porphyra, 10-11 percent of artemia, 2-3 percent of monocalcium phosphate, 2-10 percent of oyster shell powder, 1-1.5 percent of lecithin, 1.4-1.8 percent of choline chloride and 1.2-1.6 percent of abalone premix. All raw materials of the compound feed are stable in sources and complete in nutritional ingredients and can meet all nutritional requirements for abalone growth; all the components of the compound feed are matched in a balanced way, are favorable to balancing digestion and absorption, growth and transformation of abalones and have few organic residues in excrement and small influences on substrates; and the immune function and anti-stress capability of abalones can be obviously enhanced, the abalone has high vitality, and the abalone shell grows fast.

The invention relates to a universal extruded compound feed for adult abalones and a preparation thereof, comprising 8-10 weight parts of imported fish meal, 1-3 weight parts of brewer's yeast, 20-22 weight parts of extruded soybean, 43-55 weight parts of Undaria pinnatifida, 2.5-4 weight parts of calcium dihydrogen phosphate, 1.4-1.8 weight parts of choline chloride preparations, and 1.2-1.6 weight parts of abalone premix. The feed is prepared by mixing the ingredients uniformly in proportion, crushing, stirring, tabletting, cooling and conducting air drying. The feed has comprehensive nutrition and balanced combination of the ingredients, is beneficial for abalones' balanced digestion and absorption, and growth and transformation, and has high feed conversion ratio.

The invention relates to a juvenile abalone culture feed and a preparation method. The preparation method comprises the following preparation steps of (1) uniformly mixing 5-10 parts of imported fish meal, with 5-10 parts of imported chicken powder, 5-10 parts of beer yeast, 60-80 parts of undaria pinnatifida suringar, 2-4 parts of calcium dihydrogen phosphate, 1-2 parts of a choline chloride preparation and 1-2 parts of Chinese herbal medicine ingredients; (2) firstly performing coarse crushing on the mixed materials, and then performing superfine crushing; (3) performing screening with a 100-mesh sieve; (4) after powder is qualified through screening, performing mixing once again; (5) conditioning the mixed materials with steam, then performing treatment with a puffing granulator, performing tabletting, and performing cooling and air-drying, wherein the conditioning temperature is not lower than 75 DEG C, and the moisture of air-dried materials is smaller than 10%; and (6) sieving the air-dried materials according to market requirements, and performing packaging. The juvenile abalone culture feed prepared by the preparation method disclosed by the invention is stable in raw material sources and complete in nutrient components; juvenile abalones are balanced in digestion and absorption of the feed, and few organic residues exist in excrement; cultured abalones are normal in color which is close to the body color of wild abalones; and the immunity of juvenile abalones can be enhanced, the survival rate of the juvenile abalones can be increased, and other side effects do not exist.

The invention discloses a method for determining chlorine organic pollutants in textile solid wastes by combining multiple methods, which combines an accelerated solvent extraction method and a solid phase extraction method, extracts, purifies and concentrates the chlorine organic pollutants in the textile solid wastes, and qualitatively and quantitatively determines the chlorine organic pollutants by a gas chromatography-mass spectrometry method. The method comprises the following steps: S1, preparing a standard solution; S2, establishing a gas chromatography-mass spectrometry method; S3, preparing a sample; S4, performing ASE extraction; S5, performing SPE purification; and S6, performing on-machine detection and the like. the ASE extraction has the advantages of small organic solvent consumption, rapidness, small matrix influence, high reproducibility and high automation degree, and the SPE purification has the advantages of high selectivity and high recovery rate, and can reduce the influence of interference impurities. According to the method disclosed by the invention, methods such as solvent acceleration, solid-phase extraction, a chromatographic column heating program and plain detection ion scanning are combined, and the established ASE / SPE-GC / MS method is high in sensitivity and suitable for monitoring chlorobenzene and chlorotoluene organic pollutants in complex textile solid wastes.