The invention discloses a method for manufacturing an anthropotomy cast specimen model, which comprises the following steps of: a, acquiring initial image data of the existing cast specimen or the existing human body specimen; b, analyzing the initial image data, extracting structural data of various ducts in the human body from the initial image data, and performing corresponding image processing to form a three-dimensional model of the human body cast specimen; and c, importing the three-dimensional model of the human body cast specimen into quick forming equipment, and three-dimensionally printing the anthropotomy cast specimen model by using the quick forming equipment. A real human body specimen is not needed to manufacture the cast specimen model in the manufacturing method so as to solve the problem of ethics and the difficult problem of seeking manufacturing materials. The method can accurately and quickly manufacture cast specimen models of different human body parts, and greatly expands the wide spread of the human body cast specimen and the application of teaching experiments.

Method for manufacturing anthropotomy cast specimen model

The invention relates to a method for preparing modified nano montmorillonite, characterized by using an intercalation/coupling secondary modification technique, using an acid composite intercalation solution as a dispersing agent, dispersing montmorillonite through using the salvation of the intercalating agent solution, then adding a certain amount of a titanate coupling agent dropwisely in the montmorillonite for surface modification, then modifying the montmorillonite by secondary intercalation through using acrylate monomers, and further dispersing the nano montmorillonite through initiating the polymerization of the acrylate monomers between the montmorillonite layers to obtain the modified nano montmorillonite finally The modified nano montmorillonite can effectively increase the thermal stability of polrvinyl chloride (PVC)

Method for preparing modified nano montmorillonite

The invention relates to an environmental-friendly human pipeline casting filler and a preparation method thereof. The filler is prepared from the following compositions in parts by weight: 100 parts of CYD-128(E-51) epoxy, 15ml of epoxy high performance toughening modifier RF-400, 5 parts of 2, 4, 6 tri(dimethylamino methyl) phenol (DMP-30), 0.3-0.5 part of epoxy defoamer and 45-50 parts of modified alicyclic amine epoxy curing agent ZY-1618. The invention has the advantages of easy preparation, convenient operation, finishing by once perfusion, good filler fluidity, little perfusion resistance, vigorous and plump forming, fineness, beauty, small shrinkage factor, environmental protection, no toxicity, very strong support force of a casting trunk and good flexibility of a branch.

Environmental-friendly human pipeline casting filler and preparation method thereof

A supported PVC (polyvinyl chloride) heat stabilizer is characterized in that the stabilizer takes activated clay as a supporter, an active component, namely, calcium hydroxide, is supported in the supporter, the surface is modified by fatty acid which is good in affinity with PVC, and a specific implementation method is as follows: the activated clay is stirred to be dispersed in water, then a calcium hydroxide emulsion is added for supporting, the fatty acid is added for modifying after supporting, and finally, the PVC heat stabilizer is obtained after filtration, drying and crushing. The stabilizer cannot release salt or organic matters to pollute the PVC after adsorbing hydrogenchloride and is non-toxic, odorless, safe, environment-friendly and easy to prepare, and raw materials are easy to obtain.

Supported PVC (polyvinyl chloride) heat stabilizer and preparation method thereof

The invention relates to a rare earth-kaolin PVC (Polyvinyl Chloride) thermal stabilizer and a preparation method thereof. The thermal stabilizer comprises the following components in percentage by mass: 30-70% of a rare earth compound, 20-60% of rare earth modified kaolin, 3-5% of surfactant and 7-40% of assistant stabilizer, totaling 100%. The thermal stabilizer has the advantages of good compatibility with PVC resin; the stabilizer not only has good initial heat stability, but also has excellent long-term thermal stability; the PVC product has good mechanical properties. The rare earth-kaolin PVC thermal stabilizer provided by the invention is environment-friendly and non-toxic and free from heavy metals such as lead, chromium and tin as well as other toxic components. When produced and used, the rare earth-kaolin PVC thermal stabilizer does not have damages to the human body and the environment. The rare earth-kaolin PVC thermal stabilizer is wide in source of raw materials, low in cost, simple in preparation method, strong in operability and suitable for industrialized production on a large scale.

Rare earth-kaolin PVC (Polyvinyl Chloride) thermal stabilizer and preparation method thereof

The invention relates to a PVC montmorillonite/rare-earth stabilizing agent and a preparation method thereof, wherein, weight part components of the stabilizing agent comprise 100 of montmorillonite, 1 to 40 of organic rare-earth salts, 200 to 500 of dispersive medium, 1 to 10 of surface modifying agent, and 10 to 50 of auxiliary stabilizing agent. The organic rare-earth salts are prepared by organification of lanthanides inorganic rare-earth salt and long chain fatty acid. The long chain fatty acid is epoxy oleic acid, stearic acid, lauric acid or citric acid, taking up 5 percent to 40 percent of gross mass of the organic rare-earth salt. The long chain fatty acid takes up 20 percent to 40 percent of gross mass of the organic rare-earth salt. The invention overcomes defects of soft quality of traditional stabilizing agent and weak absorption ability of ultraviolet radiation and is provided with fine stripping performance and high reinforcing ability, and can effectively improve anti-attacking performance of PVC compound materials, realizes fine annealing strengthening and strengthening effects of nanometer padding and is provided fine barrier function to ultraviolet irradiation. The invention is suitable to PVC materials requiring high material mechanical strength.

Montmorillonite/rare-earth stabilizer for PVC and preparation method thereof

This invention discloses a solvent-free epoxy resin blood vessel molding agent, which is composed of: E-52D epoxy resin (viscosity is 1.1-1.4 Pains) 100 parts, diethylenetriamine curing agent 12-20 parts, butyl phosphate plasticizer 10-20 parts, perchloroethylene softening agent 8-10 parts, and red oil paint colorant 0.3 part. This invention has such advantages as simple process and easy operation. After mixing for 2-3 h, the viscosity of the system retains unchanged, which can facilitate smooth molding operation. The molding agent can be cured within 24 h, which ensures rapid molding of blood vessel. Since volatile organic solvent is not contained, second injection is not needed, and cavity or deformation of molded blood vessel does not occur. The molding agent can be used to produce 3-D images of blood vessel.

Cast agent for blood vessel of no-solvent type epoxy resin

The invention relates to a mica/rare-earth salt stabilizing agent for PVC and a method for preparing the same The mica/rare-earth salt stabilizing agent comprises the following compositions by mass percentage: 50 to 80 percent of mica, 6 to 40 percent of long-chain fatty acid organified rare-earth salt and 4 to 25 percent of surfactant The organic rare-earth salt is obtained through the organification of lanthanide-system inorganic rare earth salt and long-chain fatty acid; and the long-chain fatty acid is selected from oleic acid, stearic acid, lauric acid and citric acid Mica has a laminated structure; the dispersion medium is water and ethanol; and the surfactant is pentaerythritol ester, triphenyl phosphate oxygen and acrylate The mica/rare-earth salt stabilizing agent has good ultraviolet absorption performance, strong capacity for ultraviolet absorption, obvious reinforcing effect, high thermal resistance, good dimension stability and chemical stability, high insulating resistance and large dielectric strength; the mica has good effect of flame retardance, can reduce the use amounts of alumina, aluminium hydroxide and other flame retardants, and improves the capacity forflame retardance of the PVC material

Mica/rare-earth salt stabilizer for PVC and preparation method thereof

The invention relates to an oxidized graphite/rare-earth stabilizing agent used in PVC and a preparation method thereof; wherein the stabilizing agent comprises according to the parts by weight: 50-80 of oxidized graphite, 1-40 parts of organic rare-earth salts, 200-500 of dispersive medium, 1-20 of surface modification, and 10-50 of assistant stabilizing agent. The rare-earth salts are obtained by organizing lanthanide series inorganic rare-earth salts and long-chain fatty acids. The dispersive medium is water or ethanol. The surface modification is pentaerythritol ester, triple phenoxyl phosphorus or acrylic ester. The assistant stabilizing agent is dibenzoyl methane, stearic acid, polyethylene wax or compound thereof. The invention has super high thermal stability, good thermal conductivity and chemical durability and good interface adhesive property with resin, high self lubricity, good ultraviolet absorption performance, strong ultraviolet radiation absorption capabilitly and obvious reinforcement effect.

Haomiao Zhu

Papers

Montmorillonite/rare-earth stabilizer for PVC and preparation method thereof

Cast agent for blood vessel of no-solvent type epoxy resin

Mica/rare-earth salt stabilizer for PVC and preparation method thereof

Oxidized graphite / rare earth stabiliser for PVC and preparation thereof