74results about How to "Strong fracture resistance" patented technology

The invention discloses a highly filled wood-plastic foaming material and a preparation method thereof and belongs to the technical field of wood-plastic materials. The highly filled wood-plastic foaming material is prepared from the following raw materials: 100 parts of waste plastic, 20-30 parts of PVC particles, 70-85 parts of organic filler, 5-8 parts of inorganic filler, 1.5-1.8 parts of a coupling agent, 2-5 parts of maleic anhydride, 5-7 parts of a composite stabilizer, 1.0-2.0 parts of a composite foaming agent, 5-8 parts of a foaming aid, 2-3 parts of baking soda and 3-5 parts of epoxy soybean oil. The preparation method comprises the following steps of treating the organic filler with the coupling agent and a compatilizer and mixing the treated organic filler and other components and carrying out extrusion molding with an extruder. Compared with the existing wood-plastic composite material, the proportion of the filler in the wood-plastic foaming material is higher and thus the wood-plastic foaming material has good processing performance as well as lightweight, high specific strength, waterproof property, corrosion resistance, thermal insulation and the like.

The invention discloses a preparation method of fully-biodegradable copolyester, relates to the technical field of fully-biodegradable copolyester preparation, and solves the problems of poor tensileyield strength, tearing resistance and light transmittance of the existing fully-biodegradable copolyester. According to the preparation method, main raw materials contain aromatic dibasic acid, aliphatic diol and aliphatic dibasic acid, wherein the aromatic dibasic acid is one of terephthalic acid or isophthalic acid; the aliphatic diol is one of C4-C10 saturated diols, and the aliphatic dibasicacid is adipic acid. The disclosed copolyester has strong fracture resistance, excellent elasticity, good processability and strong light transmission, and can hardly be snapped.

The invention discloses a preparation method of a light sensation shell fabric, belonging to the technical field of shell fabrics. The preparation method of the light sensation shell fabric comprisesthe following steps: weaving and warping, carrying out filament sizing, carrying out warp tying, weaving, carrying out grey examination and desizing, dyeing, carrying out color fixation, carrying outvacuum water absorption, sizing, testing and printing, sprinkling water and sizing, carrying out finished product inspection, and packaging. The light sensation shell fabric is obtained by utilizing the novel preparation method, adopting independently developed color-changing powder and a sticky agent and combining other process steps and has strong waterproofness, high tear resistance, fracture resistance and crack resistance and strong washing resistance and color fastness to rubbing, zero formaldehyde content is detected, the light sensation shell fabric is harmless to a human body, the color-changing frequency of the light sensation shell fabric is high, color-changing effect is good, and service life is long.

The invention discloses film-forming material on filler for removing nitrogen from wastewater, which comprises polyamide and silicate which is nanometer inorganic substance, wherein the silicate is adhered to the polyamide. The silicate accounts for 1-2 percent of the film-forming material by weight. The filler for removing nitrogen from wastewater formed by the film-forming material can obviouslyimprove the removal rate of ammonia nitrogen and nitrate nitrogen in the wastewater and has strong ability of removing the nitrogen in the wastewater. Because the silicate which is the nanometer inorganic substance is adhered to the polyamide which is the organic substance, the strength of the film-forming material formed by the polyamide and the silicate is improved, and the breaking resistanceis strengthened, thus the film-forming material can not be broken when in use, and the nitrogen removing effect of the filler can not be affected.

The invention discloses a fracture-resistant refractory material and a preparation process thereof. The refractory material is prepared from the raw materials, such as aluminum oxide-silicon oxide mixed powder, calcium oxide, magnesium oxide, manganese oxide, titanium oxide, niobium pentoxide, toughened fiber and the like, by the following steps: mixing the raw materials, ball-milling the raw material mixture in absolute ethanol, drying the raw material powder and performing dry pressing on the dry raw material powder to obtain a refractor material green body; sintering the refractor material green body, and naturally cooling to room temperature after sintering to obtain the fracture-resistant refractory material. The refractory material prepared by the preparation process has high mechanical toughness, high fracture resistance and excellent thermal shock resistance; the refractory material is simple in preparation method and is easily produced by the conventional equipment.

The present invention discloses a polybutylene terephthalate composite material and a preparation method therefor. The polybutylene terephthalate composite material is prepared by using the following components in parts by weight: 80-88 parts of polybutylene terephthalate, 15-25 parts of polyamide fiber, 8-14 parts of polyalkylene glycol, 5-8 parts of barium metaborate, 4-6 parts of styrene oxide, 3-8 parts of amino acid phenyl ester glycidyl, 2-4 parts of methyl isobutyl ketone, 1-2 parts of amino hydroxy ethyl diethylenetriamine, 1-2 parts of zirconium dioxide, 1-2 parts of diphenylamine and 0.5-2 parts of polydimethylsiloxane quaternary ammonium salt. The present invention also provides the preparation method for the polybutylene terephthalate composite material.

The invention discloses a high-strength fastener for a bridge in marine atmosphere and humid environments. The high-strength fastener consists of a base body and a plating layer plated on the base body. The plating layer is a cathode compact composite plating layer which is of a three-layer structure, wherein the inner plating layer and the outer plating layer are made of nickel alloy or cobalt alloy, and the middle plating layer is a unit metal plating layer. The corrosion potential of the base body is smaller than that of the inner plating layer attached to the base body; the corrosion potential of the inner plating layer attached to the base body is smaller than that of the middle plating layer; and the corrosion potential of the plating layer of the outer plating layer is smaller than that of the middle plating layer. The tensile strength and the yield strength of the high-strength fastener range from 1000 Mpa to 1200 Mpa. The product is applied to bridge component connecting devices in marine atmosphere and humid environments, and has excellent corrosion resistance and fracture resistance.

The invention discloses a hot-rolled steel plate for an ocean riser with low cost and high performance and a production method thereof. The chemical components of the steel plate comprise C 0.04-0.10%, Si 0.10-0.35%, Mn 1.55-1.85%, Nb 0.02-0.08%, Ti 0.008-0.020%, Al 0.010-0.040%, P less than or equal to 0.020%, S less than or equal to 0.003%, Mo less than 0.20%, Cu less than or equal to 0.25%, Ni less than or equal to 0.30%, Cr less than or equal to 0.25%, N less than or equal to 0.008%, and the balance being Fe and unavoidable impurities, wherein Al / N is greater than or equal to 3, Ni+Cu+Mo+Cr is less than or equal to 0.70%, Nb+Ti is less than or equal to 0.09%, and Ti / N is equal to 2.5-5. CEIIW is 0.40-0.45%, CEPCM is 0.16-0.21%, casting blank heating temperature is 1,160-1,230 DEG C, four-stage heating is adopted, rough rolling temperature is 980-1,120 DEG C, fine rolling temperature is 790-900 DEG C, cooling temperature after rolling is 750-800 DEG C, cooling speed is 5-35 DEG C / s, and final cooling temperature is 430-520 DEG C. The steel plate of the invention has yield strength above 555 MPa, endwise tensile strength above 630 MPa, good cracking resistance, corrosion resistance and fatigue resistance, good comprehensive property, and low cost.

The present invention relates to an enhanced fiber. The enhanced fiber comprises a fiber core and a cladding; the fiber core is composed of two fiber cores with different refractive indexes through doping, and the cladding winds the outer periphery of the fiber core; the cladding includes a one-time coated layer and a twice coated layer which are formed by ultraviolet ray curing type resin, and the ultraviolet ray curing type resin includes urethane acrylate and a photoinitiator, wherein the polyisocyanate component in the urethane acrylate is aromatic polyisocyanate; an enhanced core layer is arranged between the one-time coated layer and the fiber core, the periphery of the enhanced core layer is combined and wrapped in the fiber core of the one-time coated layer; the twice coated layer has a plurality of holes extending along the central shaft of the fiber, the residual stress in the internal areas at the inner sides of the circumcircles of the holes are compression press, and the compression press is larger than 20MPa; and the enhanced layer has good yellowing resistance, small transmission loss and high breaking ability.

The invention discloses a self-supporting butterfly optical cable capable of overcoming influence of stripping grooves on protection strength of an optical fiber, and overcomes the influence of the stripping grooves of protective sleeves on the protection strength of the optical fiber. The self-supporting butterfly optical cable comprises an upper protective sleeve (1), a lower protective sleeve (4), a loose tube (6) and an optical fiber (7), wherein two pairs of stripping grooves (8) in the shape of a right-angled triangle are arranged symmetrically on both sides of the lower protective sleeve (4); the extension lines of the right-angled edges (801) of the two stripping grooves (8) on the lower end of the lower protective sleeve are set under the cross-sectional area of the loose tube (6); the extension lines of the right-angled edges (803) of the two stripping grooves (8) on the upper end of the lower protective sleeve (4) are set above the cross-sectional area of the loose tube (6),and the notches of the two stripping grooves on the both sides on the lower protective sleeve (4) are provided outside the outer contour lines at both ends of the cross-sectional area of the loose tube. The self-supporting butterfly optical cable provided by the invention has excellent resistance to fracture, reliable work and long service life.

The invention relates to a method for preparing a polyurethane marble-imitated decorative material from industrial saponification waste residues. According to the method, macromolecular polyol used inthe method is polyester polyol or polyether polyol, isocyanate is used as a raw material, 3,3'-dichloro-4,4'-diaminodiphenyl methane is used as a chain extender, and industrial saponification waste residues are used as a filler. The preparation method comprises the following steps: (1) preparation of a prepolymer; (2) preparation of a chain extender component; (3) blending and molding at normal temperature; and (4) a post-curing process. According to the invention, polyurethane elastomer is used as a main raw material of the marble-imitated decorative material, and the polyurethane elastomerhas the characteristic of difficulty in breakage and overcomes the defects of easiness in breakage, difficulty in transportation and the like of conventional ceramic tiles; meanwhile, the industrial saponification waste residues are utilized, and more industrial saponification waste residues can be added under the condition of the same destructive power, so cost is saved, and environmental protection is realized; in addition, normal-temperature pouring is adopted; that is, a prepolymer component and the chain extender component are mixed and subjected to injection molding at normal temperature, so energy is saved, and environmental pollution is reduced.