75results about How to "Small physical properties" patented technology

The present invention relates to solid waste treating technology, and discloses sewage sludge treating and utilizing process. Sewage sludge in over 70 %, fly ash and clay as the material are treated through drying, crushing, mixing, press forming, preheating and roasting to obtain haydite product. The roasted haydite has one compact glaze layer in the surface and great amount of inside pores, and possesses compressive strength, water absorption, environment safety, etc reaching relevant standard. Using sewage sludge in making building material is significant.

The present invention relates to a reflector 20; 30; 40 for use in an antenna 10; 50. The reflector 20; 30; 40 is arranged to be used as an earth plane of the antenna 10 and the reflector is corrugated to form current pockets. The reflector 20; 30; 40 comprises at least two separate parts 21, 22; 21, 22, 31, 32; 41, 42, and the parts are electrically coupled to each other to commonly form the earth plane of the antenna 10; 50. The invention also relates to an antenna including a reflector, and to a method for manufacturing a reflector.

The invention relates to a solid desulfurizer and a production method thereof, in particular to a composite calcium-based solid desulfurizer which is prepared from industrial waste residues and the production method thereof. The desulfurizer is prepared by the following steps of: directly mixing carbide slag slurry, dicyandiamide slag serving as a modifier, a chemical drying agent and magnesium slag powder which serves as another modifier; stirring and mixing; performing wet milling to prepare slurry; performing dry milling to prepare powder; and sieving. The prepared composite calcium-based solid desulfurizer is mainly compounded by calcium hydroxide or calcium hydroxide and calcium carbonate, wherein the desulfurizer contains an active magnesium oxide component, integrates the characteristics of a single calcium base or a magnesium-based desulfurizer and has composite effects. Moreover, the desulfurizer has the characteristics of saving a large amount of energy, protecting environment and reducing the cost of a flue gas desulfurizer, along with cheap and wide raw material resource, large amount of doped magnesium slag, carbide slag and dicyandiamide slag, no heat source, high dehydration speed, stable physical performance and the like; in addition, the desulfurizer has the advantages of small equipment investment, low operation cost, capability of eliminating the damage of limestone exploitation to the environment and the like.

The invention provides a high-dielectric polyphenyl ether material as well as preparation method and application thereof. The high-dielectric polyphenyl ether material comprises the following raw materials in parts by weight: 30-70 parts of PPO (Poly-p-Phenylene Oxide), 20-40 parts of a shock resistant polystyrene (HIPS) foamed master batch, 3-10 parts of single-walled carbon nanotubes, 0.5-1.5 parts of graphene, 10-20 parts of a high-dielectric filling agent, 1-4 parts of a toughening agent, 0.3-0.8 part of an antioxidant and 0.5-2 parts of a lubricant. The high-dielectric polyphenyl ether material provided by the invention is excellent in mechanical property of a PPO/HIPS alloy, good in thermal property, low in water absorption rate, in addition high in dielectric constant and low in dielectric consumption.

The invention relates to a rubber compound, a rubber product, a hydraulic rubber hose and a preparation method of the hydraulic rubber hose. The rubber compound comprises (i) hydrogenated butadiene-acrylonitrile rubber, (ii) thermal cracking carbon black and (iii) other selectable matching agents. A rubber material prepared by the rubber compound has excellent oil resistance and temperature resistance.

The invention discloses polyurethane resin for shoes, comprising a component (A) and a component (B). The polyurethane resin for shoes is characterized in that the component (A) comprises 100 parts of polyester polyol and 8-30 parts of ethylene glycol and/or butanediol, the component (B) comprises 40-60 parts of 3,3'-dimethyl-4,4' diphenyl diisocyanate and 30-45 parts of polyester polyol and/or polyether glycol. A finished product prepared by substituting TODI (3,3-Tolidine-4,4-Diisocyanate) for MDI (4,4'-Diphenylmethane Diisocyanate) through a foaming reaction has the matter properties, suchas excellent compression ratio, better wear resistance, bending resistance, tensile strength, tearing strength, and the like under low density. Because of the steric hindrance effect and the electronic effect of 3,3'-dimethyl-4,4'diphenyl diisocyanate methyl-o-side, the activity of the polyurethane resin is weaker than the activity of the diphenylmethane diisocyanate, and the prepared prepolymer is stable and mild in the foaming reaction without generating a bubble falling phenomenon. Because the activity of the TODI reaction is weaker than that of the MDI reaction, the storage stability of the isocyanate combination liquid is greatly improved.

Provided is an impeller for a blower using a highly rigid resin at a flat component without using a metal flat component particularly at a bearing portion and having an improved recycling property. The impeller for the blower comprises a plurality of blades 3 around a hub 2. It has a cylindrical resin bearing portion 4 at the center of the hub for serving as a bearing for a motor shaft and a resin flat component 501 at the bearing portion for fixing the impeller for the blower to the motor shaft with a nut.

The invention discloses silicate cement clinker and a preparation method thereof, and relates to the technical field of preparation of cement. The silicate cement clinker prepared by the invention isprepared from the following raw materials in percentage by weight: 42-72% of limestone as a calcium material, 1-20% of a silicon material, 10-40% of a supplement calcium material, 0-5% of an iron material, and 3-15% of an iron-aluminium material. The supplement calcium material is limestone moulding sand waste. According to the invention, the limestone moulding sand waste is applied to the cementclinker, so that cost of the enterprises can be reduced; waste can be changed into things of value; and great social benefits and economic benefits are achieved for society and the enterprises.

The invention relates to the technical field of fireproof materials, in particular to a rubber hose and a preparation method thereof. The rubber hose sequentially comprises a lining layer, a first steel wire framework layer, a middle rubber bonding layer, a second steel wire framework layer and an outer rubber layer in the pipe diameter direction; the lining layer is prepared from nitrile rubber and NBR/PVC rubber and plastic alloy; the first steel wire framework layer is compounded on the lining layer; the middle rubber bonding layer is compounded on the steel wire framework layer; the middle rubber bonding layer is prepared from nitrile rubber and chloroprene rubber; the second steel wire framework layer is compounded on the middle rubber bonding layer; the outer rubber layer is compounded on the second steel wire framework layer; the outer rubber layer is prepared from nitrile rubber, rubber and plastic alloy and a compound flame retardant; the compound flame retardant is prepared from the following components in parts by weight: 12 to 20 parts of polyphosphamide, 10 to 17 parts of pentaerythritol, 7 to 9 parts of melamine, 20 to 30 parts of antimony trioxide, 24 to 30 parts of white carbon black, 1-5 parts of a silane coupling agent, and 2 to 4 parts of tricresyl phosphate. The rubber hose has excellent fire resistance and ultrahigh pressure performance.

The invention belongs to the technical field of cardboard paper, and provides a production process of high-strength environment-friendly liner cardboard paper, which comprises the following steps: taking domestic bamboo fiber pulp, imported wet paper pulp, imported roll paper and national waste as raw materials according to a specific ratio; the wet paper pulp and the bamboo fiber pulp are mixed and pulped through a medium-concentration pulper, a sand remover, a pre-grinding pool, a disc mill and a post-grinding pool in sequence, and first mixed pulp is obtained; in the OCC pulping line, the cut roll paper and national waste are treated through an OCC pulper, a high-concentration sand remover, a discharging tower, a two-section coarse screen and a classifying screen in sequence to obtain long fibers and short fibers, and then the long fibers and the short fibers are subjected to aftertreatment to obtain long fiber pulp and short fiber pulp; and mixing the long fiber pulp, the short fiber pulp and the first mixed pulp, and performing papermaking to obtain the liner cardboard paper. According to the production process, national waste is mainly used, quantitative roll paper, wet paper pulp and bamboo fiber pulp are matched, and the production process is optimized, so that the cost is reduced, the production efficiency is improved, the quality of finished paper can be improved, and the problem that external waste import is limited is solved.

The invention belongs to the technical field of high polymer materials, and particularly relates to a preparation method of a wear-resistant and corrosion-resistant valve rubber material for a slurrypump. Chlorinated polyether and acrylate rubber are used for blending modification, and the prepared wear-resistant corrosion-resistant valve rubber material has excellent performance on resisting acid, alkali, muddy water, cement paste and the like. The material has the characteristics of wear resistance, scouring resistance, aging resistance, long service life and the like, and has good tensiletear resistance and high temperature resistance.

The invention relates to a new rubber riding wheel and fabricating process thereof. The fabricating process of the invention comprises steps of: 1) first mixing, masticating and thinning natural rubber NR and synthetic rubber SBR on an open mill, controlling plasticity of rubber at 0.44 to 0.45; 2) casting the rubber to a mixer, injecting for 3min to 5min, adding accelerator, octadecoic acid, zinc oxide, antiager, coumarone resin and tert-butyl phenolic resin in sequence, injecting for 4min to 6min, adding carbon black, machine oil and paraffin, after pressurizing load, adding sulfur within 60s to mix, discharging immediately and making pieces, cooling after turning evenly on a flat-bed machine, controlling mixing plasticity of rubber at 0.4 to 0.5; 3) casting mixed rubber material to the open mill to warm, then coiling or making pieces, supplying the same to a squeezer to squeeze, distributing pieces and weighing the rubber material according to product requirements for spare use; 4) packing weighed rubber material to a die cavity to enter a flat vulcanizing machine; pressurizing to vulcanize by using low temperature in grads gradually; 5) completing vulcanization.