33results about How to "Play the role of toughening and strengthening" patented technology

The invention relates to the technical field of composite material preparation, in particular to a 3D printed grid ceramic reinforced resin composite material and a preparation method thereof. The 3Dprinted grid ceramic reinforced resin composite material is composed of three parts including grid ceramic, resin and an additive dispersed in the resin, and the grid ceramic is obtained by mixing aluminum ash and ceramic powder, carrying out molding through a 3D printer and carrying out drying and sintering, pores of the grid ceramic are filled with the resin and the additive contains a diluent and a curing agent. The preparation method of the 3D printed grid ceramic reinforced resin composite material has the following advantages: (1) the composite material is excellent in heat-conducting property, simple in preparation process and lower in cost, and (2) the pores of the grid ceramic reinforcement are easy to adjust, are continuous as a whole, the grid ceramic reinforcement is firmly combined with matrix resin, the strength is high, the toughness is good, the impact resistance is realized, and the use reliability and service life of the material are improved.

The invention relates to manufacture of a hollow capsule for food and medicine, in particular to a raw material composition for preparing a starch matrix hollow capsule, and the starch matrix hollow capsule prepared from the raw material composition and easy for rapid disintegration. The raw material composition for preparing starch matrix hollow capsule of the invention is the prepared by mixing hydroxypropyl starch, hydroxypropyl-beta-cyclodextrin and a gelling agent. The raw material composition is mixed with water, heated, gelatinized and gelatinized, so as to prepare the starch matrix hollow capsule. The invention introduces a proper amount of hydroxypropyl-beta-cyclodextrin with excellent water solubility into the raw material composition, so that the prepared starch matrix hollow capsule has good disintegration performance and does not affect the capsule strength.

The invention relates to a modified starch adhesive for preparing a hollow capsule and a starch-base hollow capsule prepared from the modified starch adhesive, belonging to the field of food, medicines and the like. The modified starch adhesive for preparing the hollow capsule is prepared by mixing hydroxypropyl starch or acid-treated hydroxypropyl starch with a gelatinizer. The substitution degree DS of the hydroxypropyl starch or acid-treated hydroxypropyl starch is 0.1-0.93, and the gelatinization temperature is 25-60 DEG C. The modified starch adhesive can be heated in water to be gelatinated and colloidized to obtain the starch-base hollow capsule. The hydroxypropyl functional group is introduced to the starch molecules to modify the starch, thereby overcoming the intermolecular hydrogen bonding force of the starch, performing the toughening and reinforcing functions, effectively inhibiting starch from anabiosis, increasing the hydrophilicity of the starch molecules and lowering the gelatinization temperature; and thus, the starch-base hollow capsule has favorable disintegrability.

The invention relates to the technical field of straws, and provides a degradable environment-friendly straw and a preparation method thereof, the degradable environment-friendly straw comprises the following components by weight: 2-8 parts of sodium alginate, 0.5-5 parts of pectin, 0.5-2 parts of welan gum, 8-30 parts of modified starch, 5-10 parts of a plasticizer, 0.5-1.5 parts of tea polyphenol, 0.4-1.2 parts of chitosan oligosaccharide, 0.2-1 part of calcium gluconate, 0.5-2 part of tartaric acid and 50-100 parts of deionized water. The straw is safe and sanitary, free of toxic and side effects, environmentally friendly, edible, easy to degrade, suitable for wide application and popularization and capable of replacing a disposable plastic straw; therefore, the problems that in the prior art, a disposable plastic straw is difficult to degrade, and environmental and marine ecological pollution is prone to being caused are solved.

The wollastonite tailing reinforced and toughened low-temperature ceramic tile is prepared from the following raw materials in parts by weight: 35 to 45 parts of wollastonite tailings, 18 to 32 partsof low-temperature sand, 2 to 7 parts of medium-temperature sand, 10 to 18 parts of quartz, 2 to 4 parts of talc, 0 to 5 parts of magnesian clay, 2 to 5 parts of bentonite, 0.5 to 3 parts of bauxite,0.5 to 2 parts of zircon sand and 0 to 3 parts. The materials are sintered at the temperature of between 1,120 and 1,150 DEG C to form the ceramic. In addition, the invention further discloses a preparation method of the wollastonite tailing reinforced and toughened low-temperature ceramic tile. The wollastonite tailings are used as a main raw material, and the ceramic tile with high strength andtoughness is obtained while low-temperature sintering is achieved through formula design. According to the method, resource utilization of the wollastonite tailings is achieved, the wollastonite tailings are massively applied to building ceramic production, and the additional value of the tailings is improved. The mechanical strength and toughness of the building ceramic tile are effectively improved, and the building ceramic tile can be further expanded to a large thin plate production technology in the field of building ceramics.

The invention belongs to the technical field of polymer material modification and processing, and relates to a PP/ABS alloy material with high thermal ageing resistance, and a preparation method of the material. The PP/ABS alloy material comprises a polymer and auxiliary agents, wherein the polymer comprises PP resin and ABS resin, and the auxiliary agents comprise a compatilizer, an antioxidant,glass fibers and filler; and the PP/ABS alloy material is prepared by blending the polymer with the auxiliary agents. The antioxidant used by the preparation method provided by the invention has a good antioxidant effect, and a synergistic effect can formed among the raw materials, so that the alloy material has higher thermal ageing resistance compared with the prior art. In addition, the preparation method provided by the invention has simple technological process, convenient operation and high production efficiency, and is easy to be applied to large-scale industrial production.

The invention discloses a hydroxypropyl starch empty capsule, which is prepared from the following components (by weight): 100-110 parts of hydroxypropyl starch, 15-25 parts of gel, 2-3 parts of coagulant aids, 0.5-1.5 parts of a plasticizer, 0.8-2 parts of nanometer superfine calcium carbonate and 1000-1200 parts of water. Meanwhile, the invention further discloses a preparation method of the hydroxypropyl starch empty capsule. The empty capsule prepared by the preparation method has high toughness, is not easy to break and has good stability; in addition, the raw materials are cheap in price, the cost is low, and there is no environmental pollution in the production process.

The invention discloses a composition for preparing empty capsules with modified starch matrixes. The composition comprises 80-95 wt% of modified starch, 3-15 wt% of fluidizers, 1-9 wt% of gelatinizers and 1-15 wt% of hygroscopic reinforcing agents. The modified starch comprises 0-2.5 wt% of acetyl and 0.5-6.5 wt% of hydroxypropoxy which are subjected to cross linking by sodium trimetaphosphate or phosphorus oxychloride. With the fluidizers, defects of thin shoulders, cone vertex and riffled ends of the capsules are avoided, swelling of the cross-linked starch is suppressed, consistency of gelatinous solution is reduced, and fluidity is improved. Therefore, the empty capsules with modified starch matrixes, having high flexibility, high fillibility, long preservation period and short disintegration time, can be prepared from the composition.

The invention relates to the field of manufacturing of glass ware and in particular relates to highly wear-resistant anti-freezing glass ware and a preparation process thereof. The glass ware is prepared from the following raw materials in parts by weight: 60-75 parts of silica powder, 10-20 parts of sodium carbonate, 3-10 parts of potassium carbonate, 2-6 parts of calcium oxide powder, 15-25 parts of fly ash, 4-8 parts of powdered titanium dioxide, 3-7 parts of boric oxide powder, 4-9 parts of phosphoric acid and 1-6 parts of powdered aluminium. The preparation method comprises the followingsteps: heating, melting, extrusion forming, annealing and tempering, thereby obtaining the highly wear-resistant anti-freezing glass ware. According to the technical scheme provided by the invention,the defects in the prior art that the made glass ware has poor freezing resistance and poor wear resistance can be effectively overcome, and the highly wear-resistant anti-freezing glass ware is worthy of popularization.

The invention provides a low-shrinkage unsaturated polyester resin/concrete composite board and a preparation method thereof. The low-shrinkage unsaturated polyester resin/concrete composite board isprepared from 30-35 parts of aluminate cement, 10-20 parts of natural aggregate, 20-30 parts of resin aggregate, and 40-45 parts of glass beads. The preparation method comprises the steps: firstly, mixing unsaturated polyester resin, a nano silver antibacterial agent, filler, a low shrinkage agent, a diluent, and an initiator to prepare the resin aggregate, evenly mixing the resin aggregate with the natural aggregate and the glass beads, spreading a layer of cement slurry and a glass fiber mesh I in a mold, spreading the aggregate mixture on the glass fiber mesh I, laying a glass fiber mesh IIafter leveling, then pouring the rest of the cement slurry on the glass fiber mesh II, and removing the mold after standing for 24 hours to obtain the light-weight low-shrinkage unsaturated polyesterresin/concrete composite board. The prepared composite board can meet the sound insulation effect and achieve the flame retarding purpose, and has certain electrical insulation, thereby ensuring thesafety of use.

The invention discloses an anti-cracking calcium silicate board and a preparation process thereof. The anti-cracking calcium silicate board is prepared from the following raw materials in parts by weight: 30-40 parts of alkaline residues, 4-8 parts of slaked lime, 12-16 parts of cement, 20-24 parts of quartz powder, 1-2 parts of yttria-stabilized zirconia, 0.3-0.7 part of sodium polyacrylate, 3-6 parts of beta eucryptite glass fibers, 5-7 parts of paper pulp and 1-3 parts of anhydrous sodium sulfate. According to the calcium silicate board, the beta eucryptite glass fibers and the paper pulp fibers are adopted as fiber raw materials to jointly replace traditional asbestos fibers, the calcium silicate board is non-toxic and more friendly to human bodies and the environment, meanwhile, crack propagation can be well stopped, the propagation direction can be well changed, the propagation path can be well increased, and the anti-cracking effect of the calcium silicate board is achieved.

The invention relates to the field of flame retardants, in particular to an antimony composite flame retardant and a preparation method thereof.The exterior of the antimony composite flame retardant is coated with oleic acid, and the interior of the antimony composite flame retardant is composed of an inorganic antimony flame retardant, organic phosphinic acid metal salt and metal-MOFs; after the antimony composite flame retardant is added, the toughening and reinforcing effects can be achieved, and the mechanical property of a resin material is improved to a certain degree; the flame retardant has good flame-retardant and smoke-suppression effects, the LOI is larger than or equal to 36%, the smoke-suppression and flame-retardant level is V-0, no molten drop exists during combustion, and the ignition time is larger than or equal to 43s.

The invention discloses a self-reinforced and toughened polyamide material and a preparation method thereof. A cross-linked gel network structure exists in the polyamide material, and the cross-linked gel network is formed by heat treatment of a polyamide raw material; and the polyamide raw materials comprise a high polymer with a molecular main chain containing an amide group repetitive unit, polyamide with a monomer being omega-amino acid and polyamide formed by polycondensation of a bifunctional monomer. According to the technical scheme, the polyamide raw material is treated in a heat treatment mode, so that a cross-linked gel structure capable of reinforcing and toughening the material is generated in the polyamide raw material, and the heat resistance of the material is improved. The provided preparation method is simple in process, environment-friendly and suitable for popularization and application.