696 results about "Strong binding" patented technology

A method of alkene polymerization and copolymarization with f load non- metallocene catalyst: emplying the load non- metallocene catalyst and catalyst promoter forming the catalytic system, introducing polymer monomer or comonomer for alkene polymerization or copolymarization; adding the load non- metallocene catalyst into dissolvent and mixing with catalyst promoter and then transferring the mixture into polymerization reactor, or adding the load non- metallocene catalyst and catalyst promoter into the polymerization reactor in order or simultaneously. The catalyst promoter is chosen from: alkyl aluminium, aluminium oxane, Lewis acid, boralotano, alkyl borane or alkyl borane ammonium salt. The load non- metallocene catalyst is loaded to multiple poral solid by employing methods of solution dipping, equivoluminal dipping or solution dipping-before-equivoluminal dipping to form organic integral of property stable and strong binding force. The invention is characterized by the high alkene polymerization active, high fusion point and good normalization of the produced polymer, and the sastification of the demand of high level product production.

The invention relates to a preparation method of high-performance water-based anticorrosion paint. The high-performance water-based anticorrosion paint comprises 30-60 parts of inorganic material resin, 0.5-30 parts of polyaniline-based nano composite material, 0-30 parts of curing agent, 0.1-1 part of defoaming agent, 0.1-1 part of dispersant and 0.1-1 part of leveling agent. Since the high-performance water-based anticorrosion paint does not contain organic resin or organic solvent, the paint has the advantages of heat resistance, wear resistance, weather resistance, oil resistance, fire resistance and environmental protection; the paint also has the advantages of simple preparation technique, strong binding force with metal, and low cost, can be cured at normal temperature, and can be widely used for corrosion protection in the fields of aviation, navigation, chemical engineering, electronics and the like.

The invention relates to a cement-based shrinkage-free joint filling sealing mortar for doors and windows and a preparation method and a construction method thereof. The sealing mortar is prepared by the components in parts by weight as follows: 100 parts of cement, 0-80 parts of active admixture, 0.01-10 parts of water reducer, 0.01-10 parts of early strength agent, 0.01-10 parts of thickening time control agent, 0-25 parts of expanding agent, 0-30 parts of binder, 0-10 parts of air entraining agent, 0.01-30 parts of plastic retaining agent, 0.01-10 parts of moisture repellent, 0-5 parts of starch ether, 0-150 parts of powder filler and 0-300 parts of aggregate. Compared with the prior art, the mortar provided by the invention has the advantages of no shrinkage, strong binding power, no falling, good anti-permeability, simpleness in construction, efficiency and the like, and can adequately fill joints of doors and windows to ensure the sealing property around the doors and windows, and water is prevented from being seeped into the doors and windows.

The present invention relates to a transparent wear-resistant super-hydrophobic coating material, a preparation method and a coating process thereof. The transparent wear-resistant super-hydrophobic coating material comprises a nanometer material dispersion liquid and an adhesion material dispersion liquid. According to the present invention, during the preparation, a nanometer material and a volatile solvent are mixed and dispersed to prepare the nanometer material dispersion liquid, and the adhesion material and the good solvent thereof are mixed and dispersed to prepare the adhesion material dispersion liquid; during the coating, the substrate surface is cleaned, the adhesion material dispersion liquid is coated to form the adhesion layer, the nanometer material dispersion liquid is coated after drying, the partial nanometer material is embedded into the adhesion layer through heating, pressurization and other ways, and finally the unstably-binding nanoparticles are removed by using scraping or adhesive tape adhesion to obtain the super-hydrophobic coating, wherein the coating has characteristics of good transparency, strong binding force, and wear resistance; and the super-hydrophobic coating material of the present invention can be used for the surfaces of a variety of materials such as metals, plastics, glass, cement boards and the like so as to achieve functions of water resistance, stain resistance, corrosion resistance, self-cleaning, dew resistance, icing resistance, and the like.

The invention discloses a manufacturing method of a multilayer shell-core composite structural part, which comprises the following steps of: (1) respectively preparing feed for injection forming of a core layer, a transition layer and a shell layer, wherein powder in the feed of the core layer and the powder in the feed of the shell layer are selected from one or a mixture of some of metal powder, ceramic powder, or toughened ceramic powder and are different from each other, and the powder in the feed of the transition layer is gradient composite powder; (2) respectively manufacturing blanks of the multilayer shell-core composite structural part layer by layer with a powder injection forming method; (3) degreasing the blanks; and (4) sintering the blanks to obtain the multilayer shell-core composite structural part. The multilayer shell-core composite structural part is manufactured with the powder injection forming method, and has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance, strong binding force between the shell layer and the core layer due to the transition layer, good integral bending strength and good impact toughness and is difficult to crack.

Media and devices, such as anion exchangers including such media, wherein the media is a membrane having a surface coated with a polymer such as a polyallylamine. The resulting membrane offers stronger binding of protein impurities and superior removal of host cell proteins from biological samples than conventional ligands based on quaternary ammonium salts, including trimethylammonium ligands. Also described is a chromatography scheme and method for purifying monoclonal antibodies, wherein the anion exchange sorber is placed downstream of an affinity column (such as Protein A or Protein G affinity column) and optionally one or more polishing devices such as cationic exchange columns. Little or no dilution of the cation exchanger pool (or affinity column exchange pool where no cation exchanger is used) is necessary to lower the conductivity of the sample. The sorber functions well to strongly bind host cell proteins and other impurities in biological samples even at high conductivities and pH.

The invention relates to the immune analysis field, in particular relating to a method for performing an immunological test on biomolecules by avidin / streptavidin magnetic composite particles, which takes avidin / streptavidin magnetic composite particles as carriers, and comprises the following steps:, coating biotinylated antibody or antigen, adding a specimen to be tested and enzyme labeled antibody / enzyme labeled antigen / enzyme labeled anti-antibody, adding chromogenic substrate and testing.Biotin and avidin / streptavidin has strong binding capacity, can fix the antigen / antibody labeled by the biotin through the avidin / streptavidin labeled on the surface of the magnetic composite particles so as to use the system to test specific antibody / antigen. The test system has the advantages of high sensitivity, high specificity, high stability, strong adaptability and the like.

Specific sequences in the human genome are the sites of strong binding of wild-type p53 protein, but not mutant forms of the protein. These sequences are used diagnostically to detect cells in which the amount of wild-type p53 is diminished. The sequences can also be used to screen for agents which correct for loss of wild-type p53 to DNA in cancer cells.

The invention provides a multi-element synergic plugging agent and application thereof. The multi-element synergic plugging agent comprises the component 1 or the component 2, wherein the component 1 comprises the following components in parts by weight: 40-50 parts of rigid particles, 15-20 parts of a flexible material, 15-20 parts of an ultrafine filling material, and 15-20 parts of an expansive type polymer: the component 2 comprises the following components in parts by weight: 50-70 parts of rigid particles, 10-25 parts of a flexible material, 10-25 parts of an ultrafine filling material, and 10-30 parts of an expansive type polymer. The multi-element synergic plugging agent disclosed by the invention combines the rigid material with the flexible material, incorporates the elastoplasticity, fully utilizes the synergistic function of the materials, can effectively plug the cracks with different widths, has the performances of high bearing strength, high temperature resistance, deformability and strong binding powder of the cracked stratum, and can be applied to the leaking stoppage operation for the drilling engineering to solve the leakage problem at different degrees.

The invention relates to a synthesis method of a crude oil desalting demulsifying agent. The method specifically includes the steps of firstly, conducting p-nitrophenyl ester modification on methoxypolyethylene glycol; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternized carboxy alkyl chitosan; fourthly, making the modified methoxypolyethylene glycol react with quaternized carboxy alkyl chitosan to obtain a product, namely polyethylene glycol questin grafted quaternized carboxy alkyl chitosan. A chitosan type natural high-molecular compound serves as the raw material and has the advantages of being wide in resource, natural, free of toxin, sustainable, good in product biocompatibility, degradable and the like; The prepared demulsifying agent is good in demulsifying dewatering effect; meanwhile, due to the fact that lots of carboxy alkyl groups and quaternary ammonium salt groups are contained in demulsifying agent molecules and have strong binding capacity with metal cations, naphthenic acid radicals and other ions with negative charges and particles with surface electronegativity, the oil-soluble salt removing capacity is achieved during demulsifying.

The invention relates to a novel liver target drug carrier-glycyrrhetinic acid-polyethylene glycol / chitosan or chitosan derivative liver target compound drug delivery system. During the preparation of the nano-drug delivery system, the liver target small-molecule glycyrrhetinic acid is firstly used for modifying amino polyethylene glycol by the different sites, then a water soluble big-molecule liver target compound is prepared and is mixed with a solution containing chitosan or chitosan derivative by a certain proportion, an ion cross-linking agent is added under the stirring condition, and a target group is introduced at the same time of the spontaneous formation of nanoparticles by physical winding and electrostatic interaction. The method of introducing the target group of the invention is novel, the formation of spheres is simple, the conditions are moderate, and the content of the target group is high (the weight percentage of glycyrrhetinic acid is 5 to 30 percent). The drug delivery system has strong killing capacity to the cancer cells, the in vitro experiments show that the drug delivery system has very strong binding capacity with the liver cells, and the high content of the target group can improve the liver target capacity of the drug delivery system, realize the target positioning of the liver and open a new way for the treatment of liver cancer.

The invention provides binding mortar with light weight and high droop resistance, which consists of the following components in parts by weight: 300-450 parts of cement, 40-100 parts of rapid hardening cement, 60-200 parts of lightweight aggregate, 250-450 parts of sand, 50-100 parts of filling material, 15-50 parts of re-dispersible emulsion powder, 3-5 parts of cellulose ether, 2-4 parts of lignocellulose, 0.5-2 parts of retarder and 1-5 parts of thixotropic lubricant. The lightweight aggregates are glass microspheres, or hollow glass microspheres or ceramsite sand, of which the particle size is below 1.2mm and loose bulk density is below 0.8Kg / L. The invention has lower mortar density, good droop resistance, lower thermal conductivity and certain thermal insulation performance; the binding mortar can be hardened quickly, and the requirement of carrying out subsequent construction quickly is satisfied; the elastic modulus of the mortar is small, and deformation resistance is strong; and the mortar uses multiple polymer additives, and base materials have strong adaptability and strong binding performance.

The invention relates to a preparation method of a double-ion type crude oil desalting demulsifier. The preparation method specifically comprises the following steps: (1) carrying out esterification modification on polyethylene glycol monomethyl ether; (2) preparing glycidyl dimethyl alkyl ammonium chloride; (3) preparing quaternary ammonium carboxymethyl chitosan; (4) making the modified polyethylene glycol monomethyl ether react with the quaternary ammonium carboxymethyl chitosan to obtain a polyethylene glycol monomethyl ether grafted quaternary ammonium carboxymethyl chitosan. The double-ion type crude oil desalting demulsifier takes natural macromolecular compounds of chitosan as raw materials, thereby having many advantages of wide sources, naturalness, no toxicity, sustainability, good product bio-compatibility and degradation and the like. The prepared demulsifier is good in demulsification and dehydration effects, furthermore, demulsifier molecules contain a large number of carboxyl alkyl groups and quaternary ammonium salt groups, so that the demulsifier has a very strong binding capacity for negatively charged ions such as metal cations, naphthenic acid radicals and particles of which the surfaces are electronegative, thereby further having the removal ability for oil soluble salts while performing demulsification.

The invention relates to a method for preparing comb-shaped polymer crude oil desalting demulsifier. The method comprises the following steps: (1) performing acrylatioed modification on methoxy polyethylene glycol; (2) preparing glycidyl dimethyl alkyl ammonium chloride; (3) preparing quaternized carboxyalkyl chitosan; (4) reacting modified methoxy polyethylene glycol with quaternized carboxyalkyl chitosan to obtain the target product demulsifier. The demulsifier is prepared by using chitosan naturalpolymer compounds as raw materials, and has the advantages of wide source, nature, no toxicity, sustainability, good product biocompatibility, degradability and the like. The prepared demulsifier has good demulsification and dehydration effect since the molecular structure is a comb-shaped polymer formed by simultaneously grafting a plurality of linear branched chains on a main chain, and has a strong binding capability on metal cations, naphthenate radicals and other negatively charged ions and particles which are electronegative on surfaces since a great amount of carboxyalkyl groups and quaternary ammonium salt groups on the molecules. Therefore, the demulsifier has capabilities of demulsifying and removing oil-soluble salt.

Anti-human Mpl antibodies were prepared, and from these three types of antibodies with strong binding activity were selected. An expression system for single-chain antibodies derived from these selected antibodies was constructed using genetic engineering techniques. The anti-human Mpl antibodies and anti-human Mpl single-chain antibodies were assessed for TPO-like agonist activity using BaF3-human Mpl that proliferates TPO-dependently. It was found that while the anti-human Mpl antibodies did not exhibit agonistic activity, the anti-human Mpl single-chain antibodies showed agonistic activity. This shows that when screening for modified antibodies with agonistic activity, it is beneficial to determine agonistic activity after modifying antibodies with antigen-binding activity.

The invention discloses an asphalt base composite material for pavement crack repair. The asphalt base composite material for pavement crack repair is prepared from a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 120-150 parts of anionic emulsified asphalt, 1-3 parts of water reducing agent, 1-3 parts of defoaming agent, 3-8 parts of binder and 0-10 parts of water, and the component B comprises the following raw materials in parts by weight: 100 parts of cement, 70-110 parts of sand and 0.01-0.06 part of expanding agent. The asphalt base composite material for pavement crack repair has the flexibility of asphalt, the rigidity of cement and certain strength, is used for crack pouring and can bear and transfer loading force; the binder is added to the material so as to play a role of reinforcing the binding force between the material and crack walls, so that the service life of a pavement is prolonged, and the re-cracking phenomenon is difficult to occur. The asphalt base composite material for pavement crack repair has the advantages of low cost price, simple construction, low requirements on constructors, low energy consumption, low cost, strong binding power and long useful life and can be widely applied to the pavement crack repair.

The invention relates to a method for preparing solventless unsaturated polyester-imide wire coating enamel. The method comprises preparation of unsaturated polyester-imide and processing of paint mixing, wherein the unsaturated polyester-imide is prepared by the following steps: first step, adding polylol, dibasic acid or estolide into a reaction kettle according to a mol ratio of 1.05-1.5:1; stirring and heating the mixture to a temperature of between 160 and 170 DEG C; preserving the heat for 0.5 to 2 hours; and slowly heating the mixture to a temperature of between 200 and 205 DEG C until the acid value is no less than 50 mg KOH / g; and second step, cooling the mixture to a temperature of between 110 and 120 DEG C, adding trimellitic anhydride and diamine with the mol ratio of 2:1, and preserving the heat at a temperature of between 130 and 150 DEG C until the material is transparent; and after 1 hour of heat preservation, slowly heating the material to a temperature of between 200 and 205 DEG C until the acid value is no less than 30 mg KOG / g. Machine winding dipped by the solventless resin has the advantages of small volatilization loss, high filling rate, few times of paint dipping, short baking time, strong binding power, excellent performance of electrical appliance, environmental pollution reduction, and the like.

An embodiment of the invention combines the superior performance of a polyvinylidene difluoride (PVDF) or polyethyleneoxide (POE) binder, the strong binding force of a styrene-butadiene (SBR) binder, and a source of lithium ions in the form of solid lithium metal powder (SLMP) to form an electrode system that has improved performance as compared to PVDF / SBR binder based electrodes. This invention will provide a new way to achieve improved results at a much reduced cost.

Metal nanowires with uniform noble metal coatings are described. Two methods, galvanic exchange and direct deposition, are disclosed for the successful formation of the uniform noble metal coatings. Both the galvanic exchange reaction and the direct deposition method benefit from the inclusion of appropriately strong binding ligands to control or mediate the coating process to provide for the formation of a uniform coating. The noble metal coated nanowires are effective for the production of stable transparent conductive films, which may comprise a fused metal nanostructured network.

The invention discloses a method for preparing a novel aluminum-based composite lead dioxide-manganese dioxide anode for zinc electrodeposition, which is characterized by sequentially plating conductive coating, an alpha-PbO2-CeO2-TiO2 layer and a beta-PbO2-MnO2-WC-ZrO2 layer outside an aluminum matrix of a composite lead dioxide-manganese dioxide anode from inside to outside. The method comprises the following steps of: carrying out quenching, oil removal and sand blasting processing on the aluminum matrix; spraying the conductive coating on a matrix material; then carrying out alkaline composite plating on the alpha-PbO2-CeO2-TiO2 layer and carrying out acidic composite plating on the beta-PbO2-MnO2-WC-ZrO2 layer to obtain the composite lead dioxide-manganese dioxide anode. The aluminum-based composite lead dioxide-manganese dioxide anode manufactured by the process and method of the invention can obviously reduce the voltage of an electrode bath and energy consumption; and meanwhile, a plating layer and a matrix have strong binding force and small internal stress, and the service life of an electrode is long.

The invention relates to the field of waterproofing materials and waterproofing work, providing a bonded modified asphalt waterproof roll material, matched bonding adhesive, a preparation method and the assorted application thereof in the waterproofing work. The bonded modified asphalt waterproof roll of the invention adopts a basic tyre as a frame, a modified asphalt layer and a surface layer are sequentially stuck to the surface of the basic tyre, one face of the surface layer is polyester non-woven fabric, and the other face is polyester non-woven fabric, polyethylene film, aluminum foil, color sand or cleaving stone. The bonding adhesive of the invention comprises the following components: 60 to 120 portions of asphalt, 3 to 30 portions of affinity agents, 2 to 20 portions of phenolic resin and 30 to 180 portions of filling agents. During the application of the invention on the waterproofing work, one to three layers of bonding adhesive and the bonded modified asphalt waterproof roll are laid and stuck to a basic layer as a waterproof layer. The invention has the advantages of absence of thermal construction, effective blockage of direct leakage points of the basic layer and complicated parts of a building, strong binding force, normal construction under low temperature environment, etc.

The invention provides PA (polyamide) resin composition used for an NMT (nano molding technology) and having an LDS (laser direct structuring) function. The PA resin composition used for the NMT is mainly prepared from raw materials in parts by mass as follows: 30-90 parts of PA resin, 10-40 parts of glass fibers, 3-25 parts of inorganic whiskers, 3-10 parts of an LDS auxiliary, 0.3-5 parts of a stabilizer, 3-15 parts of a toughening agent and 0.5-3 parts of a lubricant, wherein PA resin is PA66 resin and / or PA6 resin. The glass fibers are partially replaced with inorganic whiskers, so that the sensitivity of an electromagnetic wave signal is improved, and the laser etching precision and accuracy of a material surface are improved; the defects that ordinary LDS special materials have poor binding force with metals, the molding shrinkage is large, the acid and alkali resistance is poor and LDS cannot be performed are overcome, the PA resin composition has strong binding force with metals, the binding strength is higher than 180 kgf / cm<2>, and the laser etching and chemical plating effects are good; besides, the requirements of LDS and NMT are met; material has excellent mechanical performance, good heat resistance and excellent molding machining performance.

The invention provides a metal derusting and antirusting agent as well as a preparation method and an application of the metal derusting and antirusting agent. The metal derusting and antirusting agent comprises phosphoric acid, zinc oxide, aluminium hydroxide, sodium tripolyphosphate, organic acid, a surfactant, a thickener and deionized water. The metal derusting and antirusting agent can be used for finishing derusting, passivating and phosphating for a metal surface via one-step treatment, is free from any strong acid and strong base, non-toxic, smokeless and non-smell-volatile, and is free from environment pollution; and the treated metal surface can be antirust for more than half a year and has a strong binding force with a paint layer. The metal derusting and antirusting agent is a derusting and antirusting product which is safe and reliable, less in pollution, simple in process and low in cost.

Media and devices, such as anion exchangers including such media, wherein the media is a membrane having a surface coated with a polymer such as a polyallylamine. The resulting membrane offers stronger binding of protein impurities and superior removal of host cell proteins from biological samples than conventional ligands based on quaternary ammonium salts, including trimethylammonium ligands. Also described is a chromatography scheme and method for purifying monoclonal antibodies, wherein the anion exchange sorber is placed downstream of an affinity column (such as Protein A or Protein G affinity column) and optionally one or more polishing devices such as cationic exchange columns. Little or no dilution of the cation exchanger pool (or affinity column exchange pool where no cation exchanger is used) is necessary to lower the conductivity of the sample. The sorber functions well to strongly bind host cell proteins and other impurities in biological samples even at high conductivities and pH.

The present invention is directed to methods for purifying a protein of interest, e.g., an antibody, from a sample comprising the protein of interest and at least one impurity, e.g., an aggregate, by employing a hydrophobic interaction chromatography (HIC) method that allows for binding of both the protein of interest and the at least one impurity under strong binding conditions. The present invention is based, at least in part, on the finding that both flow through and bind-elute techniques can be combined to achieve greater purification and recovery of a protein of interest, e.g., an antibody, under isocratic wash conditions and strong binding conditions.

The invention discloses high-temperature-resistant modified calcium carbonate which is characterized by being prepared from following raw materials including, by weight, 85-90 parts of calcium carbonate, 3-4 parts of cationic starch, 1-2 parts of glutinous rice glue, 3-5 parts of magnesium hydroxide, 1-2 parts of bamboo charcoal powder, 3-4 parts of dried fallen leaf powder, 2-3 parts of barium sulfate, 5-7 parts of polyimide, 1-2 parts of polybenzimidazole, 3-5 parts of hydroxyethyl acrylate, 4-6 parts of dimethylformamide, 2-4 parts of sodium sulfide, 2-3 parts of sepiolite fibre and 3-4 parts of modified titanium dioxide. Through addition of the modified titanium dioxide, dispersibility of the calcium carbonate is enhanced. Through addition of the polyimide for coating the calcium carbonate, the calcium carbonate not only has a high-temperature-resistant performance but also is good in compatibility. A crosslinking reaction can be carried out between the polyimide and a film-forming substance in rubber, plastic and coating so that a very strong binding force is generated and product performance is not reduced. Through addition of the sepiolite fibre, the modified calcium carbonate is excellent in thermal-stability, can be decomposed naturally and is safe and environment-protective.

The invention belongs to the technical field of epoxy resin preparation and discloses a halogen-free flame-retardant epoxy resin composition. The halogen-free flame-retardant epoxy resin composition comprises the following components in parts by weight: 130-160 parts by weight of phosphor-containing epoxy resin solution, 2.80-3.10 parts by weight of dicyandiamide curing agent, 0.05-0.15 part by weight of curing accelerator, 20-100 parts by weight of filler and 85-150 parts by weight of solvent. The halogen-free flame-retardant epoxy resin composition disclosed by the invention has the advantages of favorable operability, strong binding property, favorable flame-retardant performance, excellent reactivity and the like and is used for preparing a printed circuit copper clad laminate, so that the copper clad laminate has the comprehensive performances of favorable toughness, high stripping strength, favorable heat resistance (T288 reaches over 10 minutes) and the like.

The invention relates to a method for preparing a balloon dilatation catheter medicinal coating for treatment. The method comprises the following steps: adding a diluted solvent into a glass bottle filled with a medicine for treating vascular endothelial re-proliferation, oscillating to completely dissolve the medicine to prepare a medicine solution; mixing the medicine solution and an interference solvent which is incompatible with the medicine, and feeding into a dual-channel ultrasonic nozzle to coat a balloon dilatation catheter; drying, sterilizing and packaging the coated balloon dilatation catheter. According to the method, the medicine solution is mixed with another incompatible interference solvent before ultrasonic coating, so that the shape of the medicine in the solution is changed, and the mixture is fed into the ultrasonic nozzle to perform ultrasonic coating to achieve the aims of controlling the coating granularity, increasing the coating binding force and controlling the releasing rate of the medicine. The medicine coating formed by the method has the characteristics of uniformity, strong binding force with balloon, controllable crystal granularity, durable drug effect and the like.

The invention discloses a micro-arc oxidation pretreatment method before chemical nickel-plating of a titanium alloy. The pretreatment method is characterized by introducing a micro-arc oxidation process before an activation process, so that the titanium alloy with a micro-arc oxidation film on the surface is subjected to post-activation chemical nickel-plating. The pretreatment method comprises the following steps of: (1) performing chemical oil removal; (2) performing micro-arc oxidation; (3) performing activation; (4) performing chemical nickel-plating; and (5) performing post-treatment. The pretreatment method has the advantage that: a high-performance chemical nickel-plating film with strong binding force, high hardness and high corrosion resistance can be obtained on the surface of the titanium alloy.

The invention relates to a calcination-free desulfurized gypsum walling plastering dry-mixed mortar, belonging to the technical field of construction materials. In order to solve the technical problems of overhigh raw material cost, and poor binding property, poor thermal insulation property and low strength after being applied to walling in the mortar in the prior art, the invention provides a calcination-free desulfurized gypsum walling plastering dry-mixed mortar which is mainly prepared from 20-40 parts of calcination-free desulfurized gypsum, 30-60 parts of aggregate, 0.05-0.2 part of water retention agent and 8-15 parts of gypsum modifying material. The calcination-free desulfurized gypsum walling plastering dry-mixed mortar has the advantages of reasonable raw material proportioning and less secondary pollution, and also has the advantages of smooth and flat surface, strong binding force, low surface shrinkage / cracking / hollowing / shedding tendency, good aesthetic property and low thermal conductivity after being applied to walling.