51results about How to "Overcome degradability" patented technology

The invention belongs to the field of detergent compositions, and provides a method for preparing a pesticide-removing fruit and vegetable cleaning agent based on shell powder. The pesticide-removing fruit and vegetable cleaning agent is prepared from natural shell powder as a main raw material, and a natural adjuvant by the steps of preparation of micro / nano shell powder and addition of the natural adjuvant. The pesticide-removing fruit and vegetable cleaning agent is capable of effectively adsorbing and removing harmful residue matters such as pesticides and chemical fertilizers in the fruits and vegetables, not changing the properties of foods, and prolonging the quality guarantee period, and is safe, non-toxic, degradable, and suitable for cleaning of various fruits and vegetables; and the fruits and vegetables can be directly eaten after being cleaned. The pesticide-removing fruit and vegetable cleaning agent has good adsorptive property, bactericidal performance and the like, can play a good adsorption role in pesticide residues on the surfaces of the fruits and vegetables, is free of harm to a human body and the environment, and is capable of overcoming the defects of an existing cleaning agent in the aspects of non-degradation and chemical synthetic substance residue on the surfaces of the fruits and vegetables.

The invention provides a collagen matrix freezing gel used for biomedical materials and a preparation method thereof. The collagen matrix freezing gel is the collagen extracted from skins or tendons of healthy domestic animals using the enzyme method with the molecular weight of 280 to 320kDa and a well maintained triple helical structure; the collagen reacts for 1 to 7 days in the condition of low temperature of 0 to minus 50 DEG C in a die after through cross linked and modified reaction with hydroformylation polysaccharide, then extrudes the die and is defrosted, thus forming the collagen matrix freezing gel. The preparation of the collagen matrix freezing gel of the invention in particular relates to the extraction of the collagen, the preparation of the hydroformylation polysaccharide and the synthesis of hydroformylation polysaccharide-collagen matrix freezing gel. The hydroformylation polysaccharide-collagen matrix freezing gel prepared by the invention improves the mechanical property, thermal stability and anti-enzyme degradation, etc., of pure collagen gels, and the freezing gel has the advantages of porosity, plasticity, hydrophilic property and non-toxicity, and can be used as biomedical materials such as bio-scaffold, cell cultivation, drug controlled release and biological dressings.

The invention discloses vegetable gum based on modified starch. The vegetable gum is prepared from the following raw materials in parts by weight, 40-90 parts of modified starch, 3-30 parts of gelatinizing agents, 2-20 parts of plasticizers, 2-20 parts of polymer, 2-20 parts of plant fibers, 10-50 parts of deionized water and 1-15 parts of cross-linking agents. The raw materials are mixed and subjected to reaction at the temperature ranging from 20 DEG C to 120 DEG C for 10-200 minutes, and the vegetable gum is prepared by kneading, extruding and cutting procedures. The starch and the polymer or macro-molecules are compounded and mixed or grafted and copolymerized, the vegetable gum overcomes the shortcomings of poor plasticity, low tensile strength and frangibility of original starch and difficulty in degradation and non-renewable performance of the macro-molecules, the vegetable gum is degradable, renewable, low in cost, good in plasticity, stable on heat and resistant to aging, and a preparation method of the vegetable gum controls extrusion temperature, screw rotation speed, cutter rotation speed and granule cooling, so that granules cannot be adhered and are uniform in size and good in plasticity. The vegetable gum is applied to related products such as degradable plastics, capsules and food and drug packing materials.

The invention discloses self-setting calcium phosphate micro spheres, a method for preparing the same and application thereof. The preparation method comprises the following steps of: mixing glutin and deionized water to obtain solution of glutin; mixing polysaccharide gum and deionized water to obtain solution of polysaccharide gum; mixing completely dissolved solution of glutin and solution of polysaccharide gum to obtain solution of glutin / polysaccharide gum; fully mixing the solution of glutin / polysaccharide gum and calcium phosphate cement by stirring to obtain pasty self-setting calciumphosphate slurry, fully dispersing the self-setting calcium phosphate slurry into soybean oil by stirring, removing the soybean oil by filtration, and repeatedly washing the micro spheres by acetone and alcohol to obtain the wet micro spheres; and performing curing hydration and drying of the wet micro spheres to obtain the self-setting calcium phosphate micro spheres. The method has the advantages that: the sintering treatment of the micro spheres is unnecessary, medicaments, growth factors or other active (functional) components can be synchronously loaded in the preparation process, the grain size of the obtained self-setting calcium phosphate micro spheres is 0.12 to 2.61mm, and the obtained self-setting calcium phosphate micro spheres are not disintegrated in 6 to 32 hours.

The invention relates to a method for preparing a PLGA / PCL / nHA composite bone repair porous scaffold by a 3D printing technology as well as a product and application of the method. The method comprises the following steps: mixing 1,4-dioxane which is used as a solvent with PLGA and PCL according to a mass ratio of 9:(1-5):5, adding nHA powder according to a mass fraction of 10-25%, and finally adding tributyl citrate as a compatibilizer to improve the uniformity of the material; using the solution as 3D printing 'ink', carrying out 3D printing with a 3D printer, selecting a 150-micron discharging needle, and setting printing parameters as follows: parallel printing is adopted for each layer with gaps of 0.1-0.3mm, the Z-axis direction is raised by 0.2mm each time, the layers are verticallycrossed and stacked, the extrusion speed is set to 1.5-2mm / s, and the temperature of a receiving platform is -20 to -10 DEG C; and after the scaffold is printed, carrying out freeze-drying for 48 hours, and then drying the scaffold in a vacuum oven at 50 DEG C for 24 hours or more to prepare a PLGA / PCL / nHA composite bone repair porous scaffold. The preparation method provided by the invention issimple and feasible; the prepared porous bone repair scaffold has proper pore size and porosity, good biocompatibility and mechanical strength, thereby providing a new idea for clinical treatment of large bone defects, and having a wide clinical application prospect.

The invention discloses an auxiliary injection molding system of constant pressure gas, which comprises the following parts: injection molding device (10), nitrogen generator (20), gas pressure booster (30) and gas pressure controller (40), wherein the gas pressure controller (40) connects injection molding device (10) and gas pressure booster (30); the gas pressure booster connects nitrogen generator (20).

The invention provides a bisphenol A sulfonated polysulfone copolymer and a synthesis method thereof, which relates to a polysulfone copolymer and a synthesis method. The invention solves the problem that the synthesis by using the existing method has difficulties in controlling the degree of sulphonation of polysulfone copolymer and the side reactions occur easily. The molecular formula of the product of the invention is as the above formula, wherein, n and m represent degree of polymerization. The steps of the method are as follows: A. 4, 4'-dichlorodiphenyl sulfone, sulfonation dichlorodiphenyl sulfone and bisphenol A are dissolved in N-cymene-2- ketopyrrolidine, adding potassium carbonate and toluene; B. under the condition with temperature of 150 to 160 DEG C, toluene is removed after 4-hour refluxing ; the temperature is increased to 190 DEG C and the reaction is incubated for 16 to 35 hours with heat preservation; C. water or N is added and solid is precipitated in the N'-dimethylacetamide; then the precipitated solid is ground and filtered and washed by water; the precipitate is put into boiling deionized water, washed again and dried in vacuum, thus the steps are all finished. The polysulfone copolymer and the synthesis method of the invention effectively control the degree of sulphonation and have no occurrence of the side reactions and the production rate of the product of the invention is over 90 percent.

The invention relates to a combined water purifying device and method. The combined water purifying device comprises an ozone generating and exhaust treating system, a catalytic filter system, a post-treatment effluent collecting system and a gas-water alternate operation control system, wherein the ozone generating and exhaust treating system is connected to the catalytic filter system; and the gas-water alternate operation control system is sued for controlling the operation of the combined water purifying device. The combined water purifying device provided by the invention is compact in structure and small in floor area, and can be automatically controlled and upgraded. The combined water purifying method provided by the invention integrates ozone catalytic oxidation, bubbleless aeration and membrane filtration. Raw water is subjected to coagulating sedimentation and then flows into a catalytic filter tank; a membrane assembly is immersed below a liquid level; ozone is introduced into the membrane assembly to carry out bubbleless aeration; purified water is filtered and enters into the membrane assembly; and exhaust generated by the catalytic filter system enters into an exhaust breaking device to break ozone. The combined water purifying method provided by the invention can effectively treat relatively trace refractory organics in a water body, and deeply purifies micro-polluted water body.

The invention discloses a polar polypropylene graft. The polar polypropylene graft comprises the following components in parts by weight: 100 parts of a PP resin raw material, 0.1-5 parts of an initiator monomer; 0-2 parts of an initiator, 0-5 parts of polar monomers, 0-5 parts of a grafting assistant and 0.05-1 part of an antioxidant. The invention also discloses a preparation method of the polarpolypropylene graft. The polar polypropylene graft provided by the invention is prepared by introducing an initiator monomer having peroxy groups, unsaturated double bonds and polar groups at the same time through a melt reaction extrusion method. The obtained polypropylene graft has a relatively high polar group grafting rate, can effectively reduce common degradation side reactions in a polypropylene melt grafting process, and is beneficial to improving the mechanical properties of products. The method is suitable for a prior production technological process and can be used for batch production.

The invention discloses a method for preparing a natural high-molecular material by the utilization of rare earth metal ion coordination. Through strong coordination between rare earth metal ion and oxygen atom in carboxyl function group, the rare earth metal ion coordinated natural high-molecular material is prepared by an ion permeation and diffusion method. According to the method, carboxyl-modified graphene oxide is introduced into the natural high-molecular material such that mechanical strength of the material is enhanced and structural regularity of the material also can be boosted. By selecting one ingredient from sodium alginate and xanthan gum as the base material, the material can be endowed with good biocompatibility and biodegradability. The method of the invention is simple and feasible. Reaction condition is mild. The prepared natural high-molecular material has good biocompatibility and strong mechanical properties.

The invention discloses a preparation method of licorice particles for livestock and poultry, comprising the following steps of: firstly taking licorice, placing it into an extraction pot to form a medicinal material layer, adding water and immersing, adjusting the operating temperature of the extraction pot to 60-80 DEG C for extraction, leading out parts of an extract from the bottom of the extraction pot during the extraction process and carrying out vacuum concentration while the concentration temperature is 50-70 DEG C, condensing steam generated by the concentration, returning the stream used as a new solvent into the extraction pot for permeating extraction of the medicinal material layer, continuously repeating for 2-3 hours, condensing to finally obtain a fluid extract, adding anhydrous glucose and maltodextrin or cyclodextrin and the fluid extract into a spray drying granulator, and carrying out granulation so as to obtain the licorice particles for livestock and poultry. According to the preparation method of the licorice particles for livestock and poultry, the two processes of licorice extraction and condensation are synchronously carried out so as to change a high-temperature decocting technology of a traditional extraction pot under pressure and at normal pressure. Therefore, energy can be saved by 0.3-0.5 time; the amount of a hydrosolvent is minimized by 0.5-1 time; the feeding amount is increased by 30-60%; extract yielding rate is raised by more than 10%; the storage process is minimized; and electric power energy is saved by more than 30%.

The invention relates to a preparation method of oxidized nano bacteria cellulose, belonging to the related fields of biomedical materials and medical appliances. The method comprises the following steps: performing pretreatment and purification treatment on nano bacteria cellulose film to obtain purified nano bacteria cellulose, and shearing into wafers or square slices of different specifications; placing sheared nano bacteria cellulose in a clean wide-necked bottle or a wide-necked bottle holding a nitric acid solution with appointed concentration, and introducing NO2 / N2O4 gas generated by reaction between copper powder and concentrated nitric acid to the wide-necked bottle so as to oxidize the nano bacteria cellulose; and taking out the sample after appointed time, and repeatedly cleaning with deionized water to obtain oxidized nano bacteria cellulose containing carboxyl group on C6 position. The prepared oxidized nano bacteria cellulose has excellent degradation property, biocompatibility and cellular affinity, excellent bleeding arresting performance and mechanical properties, and excellent water permeation, gas permeation, guiding and moisture absorption effects, and has higher application value in the aspects of implantation materials and wound bleeding arresting materials.

The invention belongs to the field of plant fiber material, and provides a degradable reinforced plant fiber material and a preparation method thereof. The degradable reinforced plant fiber material comprises 50 to 52% of rice husk powder, 14% of a degradable adhesive, 12.5 to 13% of a reinforcing agent, 1 to 3% of a release agent and 18 to 20% of water. The degradable adhesive comprised 10% of polyvinyl alcohol and 4% of urea-formaldehyde resin; the reinforcing agent comprises 12% of heavy calcium carbonate and 0.5 to 1% of nano silicon dioxide, and the release agent is stearic acid or zine stearate. The degradable reinforced plant fiber material helps to solve problems of existing plant fiber material that: the existing plant fiber material is non-degradable, production cost is relatively high, strength is insufficient, and production period is long. The degradable reinforced plant fiber material is degradable, and possesses high mechanical strength and toughness, and is capable of widening applications of plant fiber material.

The dysmenorrhea treating solid medicine preparation, named Yikunning, is prepared with angelica, nutagrass flatsedge rhizome, cassia bark, prepared rhizome of rehmannia, white peony root and other five kinds of Chinese medicinal materials; and it features its plasticizer of dextrin and / or lactose oligomer and the spray drying and dry pelletizing capable of maintaining the effective component completely and suitable for continuous GMP production. The medicine contains no ethanol, cane sugar and preservative, is safe, without side effect, and has many other advantages.

The invention discloses a preparation method of indigowoad root and indigowoad leaf particles used for livestock and poultry. First, indigowoad root and indigowoad leaf are placed in an extraction tank, such that a medicine material layer is formed; the materials are soaked by using water; the working temperature of the extraction tank is regulated to 60-80 DEG C, and extraction is carried out; during the extraction process, a part of the extraction solution is fetched from the bottom of the extraction tank, and is subjected to vacuum concentration, wherein the concentration temperature is 50-70 DEG C; vapor generated by concentration is condensed and adopted as a novel solvent, and is delivered back to the extraction tank for carrying out percolation extraction upon the medicine material layer; the steps are repeated for 2-3h, and a fluid extract is obtained by concentration; anhydrous dextrose, maltodextrin or cyclodextrin, and the fluid extract are added into a spray-drying granulator for granulation, such that the indigowoad root and indigowoad leaf particles used for livestock and poultry are obtained. According to the preparation method of the indigowoad root and indigowoad leaf particles used for livestock and poultry, two processes which are the extraction and concentration of the indigowoad root and indigowoad leaf are carried out simultaneously, a pressurized and normal-pressure boiling process in a traditional extraction tank is changed, such that energy can be saved by 0.3-0.5 times, the dosage of a water solvent can be reduced by 0.5-1 time, a feeding amount is increased by 30-60%, an extract yield is increased by more than 10%, a storage process is reduced, and electric energy is saved by more than 30%.

The invention relates to a method for preparing an alveolar bone repair material. The method comprises the following steps: step 1, cutting cancellous bone parts of chine and thigh bone of a mammal into pieces, poaching and drying; step 2, soaking the cancellous bone by using phosphoric acid; step 3, cooking the cancellous bone in a pressure cooker, bleaching by using deionized water, and drying; step 4, modifying the cancellous bone; step 5, calcining the cancellous bone in a high temperature stove; and step 6, crushing and screening the calcined cancellous bone. According to the alveolar bone repair material prepared by utilizing the method, the ratio of hydroxyapatite (HA) to beta-tertiary calcium phosphate (beta-TCP) in the components is between 1:4 and 4:1, the defects that the HA is extremely stable and beta-TCP is extremely quickly degraded are overcome, and the degradation speed of the material can be adjusted by virtue of the ratio between HA and beta-TCP, so that the degradation speed is matched with the growth speed of surrounding bone tissues, and the material has an obvious effect of promoting bone healing. Moreover, the material has a certain hardness and strength and is simple in plasticity and rich in source, and the manufacture problems of artificial synthetic materials in aspects such as porosity, pore traffic and pore size are solved.

The invention discloses a bone repair material composition, a bone repair material and a preparation method and application of the bone repair material. The bone repair material composition comprisesa bone cement component and curing liquid, wherein the bone cement comprises magnesium oxide, calcium hydrophosphate, sodium dihydrogen phosphate and hydroxyapatite, and the curing liquid is a sodiumphytate aqueous solution. The bone repair material disclosed by the invention is simple to prepare and proper in coagulation time, has good biocompatibility, osteogenesis and degradability, can be directly injected into a bone defect part, has anti-osteoporosis performance and has an obvious osteogenesis effect.

A hydroxypropyl-beta-cyclodextrin supermolecule clathrate (inclusion) compound of butyl p-hydroxybenzoate, which is a mildew-resistant and anti-bacterial medicine, and a preparing method and a using method thereof are disclosed. The clathrate (inclusion) compound comprises the butyl p-hydroxybenzoate and hydroxypropyl-beta-cyclodextrin in a weight ratio not less than 1:7.5. The butyl p-hydroxybenzoate obtains good water solubility and the water solubility of the butyl p-hydroxybenzoate turns from insolubility to easy solubility, and therefore the problem that an aqueous butyl p-hydroxybenzoate solution is not liable to apply or operate is overcome, the butyl p-hydroxybenzoate can be applied in a circumstance of high concentrations, and the butyl p-hydroxybenzoate obtains good usability and can be directly added into an aqueous solution or can be directly dissolved with water together with other components. By protection of the hydroxypropyl-beta-cyclodextrin, possible chemical compatibility and degradation invalidation problems with other components in the solution are overcome, so that good stability is achieved. The supermolecule clathrate (inclusion) compound of the hydroxypropyl-beta-cyclodextrin and the butyl p-hydroxybenzoate maintains mildew-resistant and anti-bacterial functions and maintains the range unchanged.

The invention relates to a modified lignocellulose diaphragm for a lithium ion battery, a preparation method and application thereof. The lignocellulose diaphragm is obtained by treating a natural wood film with a thickness of 30-300microm with mixed alkali liquor, putting the treated wood film in a vacuum environment, fully immersing the wood film with the mixed alkali liquor, and carrying out high-temperature treatment. Compared with the prior art, the lithium ion battery diaphragm based on the natural lignocellulose prepared by the invention not only has high ionic conductivity, thermal stability and excellent mechanical strength, but also has the advantages of low cost, rich raw materials and the like. The preparation method of the diaphragm is extremely simple, and the diaphragm can be obtained by performing one-step modification on the cut micron-sized natural wood film in a mixed solution of potassium hydroxide and sodium sulfite. According to the method, the preparation processis greatly simplified, the cost is effectively reduced, and green, low-cost and large-scale application is expected to be realized.

The invention discloses an RGD-SSL lipidosome for packaging turtle shell peptide and a preparation method of the lipidosome. The turtle shell peptide long-cycle lipidosome modified by RGD comprises a lipidosome body and the turtle shell peptide (HGRFG) in the lipidosome body. The lipidosome body is prepared from egg yolk lecithin (EPC), cholesterol (Chol), mPEG2000-DSPE and RGD-PEG2000-DSPE according to the molar ratio of 50:25:1:0.6, and the weight ratio of the turtle shell peptide (HGRFG) to the EPC is 1:5 to 1:30. The defects that turtle shell peptide and other oligopeptides can easily degrade when orally taken and are low in bioavailability and short in half-life period are overcome; the RGD modified turtle shell peptide long-cycle lipidosome (RGD-SSL-turtle shell peptide) is obtained by packaging the turtle shell peptide with the granularity and RGD modified dual-control hepatic targeting lipidosome, the local biological effect and cycle half-life period are improved, the dosage frequency is reduced, and the lipidosome is suitable for treatment of hepatic fibrosis and other hepatic diseases.

The invention belongs to the field of biodegradation, in particular to starch-base tableware and a manufacturing method thereof. The starch-base tableware comprises modified plant starch, a plasticizer, a modifier, biology-based resin, inorganic powder and deionized water, wherein the modified plant starch is formed by adding a surfactant to one or more of cassava starch, corn starch and sweet potato starch and mixing. By means of the starch-base tableware and the manufacturing method thereof, the problem that a product is hard and fragile due to temperature, humidity or air pressure is solved, pollution of the surface of the product caused due to the fact that environment influences small-molecule material migration is avoided, heat stability of the starch-base tableware is improved, the retrogradation phenomenon is overcome, and the product is more flexible. The invention further provides the manufacturing method of the starch-base tableware, the process is simple, investment is little, and large-scale production is facilitated.

The invention discloses plant transplanting nutrient paper and a preparation method thereof. The preparation method comprises the following steps: (1) by taking paper pulp fiber as the raw material, making the fiber paper by virtue of the links of pulping, drifting, netting, squeezing and drying; (2) soaking the fiber paper in a nutrient solution or coating the fiber paper with the nutrient solution; and (3) spraying a super absorbent resin on the fiber paper and drying. The plant transplanting nutrient paper can be directly bound around the root covering zone of the root of a plant or the lower portion of the main stem of the plant, or bound around the root covering zone of the plant to be transplanted after a little old bark is stripped off; as the moisture is transferred by the paper base material super absorbent resin, the transfer and transmission of the nutrient substances to the guide tube or the sieve tube of the main stem of the plant are realized; the defects of the existing suspended needle bag in the aspects of plant dermis tissue damage, poor nutrient solution feeding sustainability, poor biodegradability of the suspended needle bag made of a polymer and the like can be overcome; and the plant transplanting nutrient paper can be widely applied to the fields of the transplanting and protection of plants and the packaging and preservation of ornamental flowers.

The invention discloses a making method of an acid-proof polyamide fabric. The method comprises the following steps: preparing an acid-proof finishing agent; and spraying the right surface of a polyamide fabric with an acid-proof reinforcing adhesive, coating the wrong side of the polyamide fabric with the acid-proof reinforcing adhesive, and carrying out waterproof finishing of the above obtained polyamide fabric. The special acid-proof finishing agent used by the polyamide fabric made through the method is nontoxic, odorless, safe and reliable, has a lasting acid proofing effect, and overcomes the difficult degradation of perfluorooctane sulfonyl compounds in present acid-proof finishing agents and the severe harms of the compounds to the environment and human bodies. The polyamide fabric obtained after the acid-proof finishing is difficult for an acidic liquid to adhere and penetrate, substantially reduces the damages of the acidic liquid to the fabric, improves the use strength, guarantees the effectiveness as a fastener, and provides a safety protection effect for workers contacting with acids.

The invention relates to a self-flame retardant antibacterial aqueous polyester resin and a preparation method thereof. The resin comprises the following components in parts by weight: 6.0-12.0 partsof organic anhydride, 3.0-5.0 parts of carboxylic acid Schiff base, 3.0-8.0 parts of polybasic acid, 6.0-20.0 parts of polyhydric alcohols, 1.2-3.5 parts of 2-chloro-5-bromobenzoic acid, 1.5-3.5 partsof dimethylolpropionic acid, 2.0-5.0 parts of xylene, 2.0-5.0 parts of a neutralizing agent and 45.0-65.0 parts of deionized water. The self-flame retardant antibacterial aqueous polyester resin provided by the invention is good in coloring property, low in viscosity, high in hardness, good in fullness, good in brightness, and the like, is free of external flame retardant or antibacterial agent when an aqueous coating is prepared, is long in flame retardant and antibacterial effect lasting and high in efficiency, and can be applied to inner and outer wall coatings, aqueous industrial coatings, aqueous wood product coatings, and the like.

The invention discloses a halogen-free flame retardant and a polymer material containing the same. The halogen-free flame retardant contains a compound A and a compound B, wherein the compound A is selected from at least one of non-acid metal salts formed by an acid radical anion and a metal cation, wherein the acid radical anion is formed by at least one hydroxyl in a compound C by losing of a hydrogen atom; the compound C is selected from at least one of the compounds having the chemical formula shown in formula (I); the compound B is selected from at least one of the compounds having the chemical formula shown in formula (II) and the compounds having the chemical formula shown in formula (III). The halogen-free flame retardant overcomes defects of existing alkyl phosphonates as flame retardants, and particularly solves the problems of polymer material degradation and yellowing caused by the alkyl phosphonates in the prior art.

The invention relates to construction, rescue and application of infectious clone of porcine reproductive and respiratory syndrome virus type 1 isolate, and provides an infectious clone virus of porcine reproductive and respiratory syndrome virus type 1 (PRRSV1) wild strain. A key genetic operation platform is provided for researching Marc-145 cell adaptability determinants of the PRRSV1. Meanwhile, aiming at the practical problem that the PRRSV1 vaccine is lacked in China at present, the PRRSV1 wild strain infectious cloning platform disclosed by the invention can also be used for developinga safer and more efficient novel PRRSV1 gene engineering vaccine.

The invention relates to a preparation method of a 3D printed PLGA intervertebral fusion cage coated with calcium phosphate cement. The polyester PLGA intervertebral fusion cage can be degraded through the 3D printing technology, the surface of a polymer is coated with the calcium phosphate cement, the printing clearance is filled, and the calcium phosphate cement is solidified to form a hydroxyapatite coating. The preparation method is expected to solve problems faced by the application of degradable materials in the field of intervertebral fusion cage, such as excessive degradation in vivo, large acidity of degradation products and insufficient mechanical properties, meanwhile, the 3D printing technology provides a novel path for clinical individualized preparation of the intervertebral fusion cage in accordance with human anatomy, and a broad clinical application prospect is achieved.

The invention provides an endocrine disruptor-containing pickling wastewater treatment apparatus and a method thereof. Pickling wastewater from China National Offshore Oil Corporation mainly comprises acids, metal ions and organic matters, and the endocrine disruptor is nonylphenol polyoxyethylene ether and is a surface active substance, is a common organic matter used in the coating process of offshore oilfields, and is harmful to the ecology. The wastewater undergoes foam separation, a Fenton oxidation reaction, flocculating precipitation, A2 / O biochemical treatment, a CMF reaction and active carbon filtration to remove harmful substances in the wastewater, and the treated outlet water reaches first stage B standards of Chinese Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant, and can be used in pipeline spray cooling. The apparatus has the advantages of high automation degree, flexible adjustment of the reaction flow, and adaption to different inlet and outlet water quality requirements, and the method has the advantages of COD standard reaching discharge, wastewater treatment cost reduction, and realization of the high effectiveness and the economy of wastewater treatment.

The invention discloses a fluorine-containing organosilicone monomer and a preparation method thereof. The method is characterized in that the method comprises the steps that 3-tridecafluorohexyl propylene and tridecafluoro-1-iodohexane are taken as starting materials, and undergo a single electron transfer addition reaction to synthesize 1,3-bi-(tridecafluorohexyl)-2-iodopropane; 1,3-bi-(tridecafluorohexyl)-2-iodopropane reacts with magnesium metal to prepare 1,3-bi-(tridecafluorohexyl)-2-propyl magnesium iodide which further reacts with silicon tetrachloride to form fluorine-containing alkyl-substituted chlorosilane; and a bi-[1,3-bi-(tridecafluorohexyl) isopropyl] dichloro-silicohydride product is obtained by recification. In a molecular structure of the product, perfluoroalkyl is short-chain perfluoroalkyl; the length of a carbon chain is equal to 6; the product is not degraded difficultly, has no cumulative toxicity, and is an environment-friendly monomer for synthesizing fluorine-containing polysiloxane. The preparation and reaction conditions of the fluorine-containing organosilicone monomer are mild; a technique is simple and convenient; the raw materials are easy to obtain; and industrialized production, and popularization and application are facilitated.

The invention discloses a method for rapidly and sensitively detecting a tobacco potato virus Y. A tobacco extracting solution is used as a reaction template, a polyvinylidene fluoride film is used as a reaction film, and an TR-PCR is combined to detect the potato virus Y, a tobacco mosaic virus and a cucumber mosaic virus. By adopting the method, the potato virus Y, the tobacco mosaic virus and the cucumber mosaic virus can be accurately and effectively detected, the operation is simple and convenient, the detecting sensitivity is improved, the detection time is shortened, and the detection cost is saved.