1208results about How to "Improve water stability" patented technology

The present invention is directed to an adhesive composition, which comprises an epoxy resin, a coupling agent, filler, and an effective amount of an amine-curing agent or curative for said epoxy resin. Advantageously, tri-functional and / or tetrafunctional epoxy resins and / or acrylate monomers will be incorporated into the adhesive composition in order to reduce open time and enhance substrate adhesion. Advantageously, a mixture of amines will be used in the curative including aliphatic amines, which have low viscosities and efficiently wet the substrate for enhancing adhesion; polyamines, which can be used to manipulate open time and allow for improved ratio tolerance of the adhesive system; and amine-terminated rubbers (ATBN), which can improve impact resistance and the toughness of the cured adhesive. Preferred coupling agents are silanes.

Water stable fibers and articles made therefrom are formed from a thermoplastic composition comprising destructured starch, polyhydric alcohol, triglyceride, and optionally acid. Processes for making water stable compositions may comprise melt extruding a mixture of destructured starch, polyhydric alcohol, triglyceride, and optionally acid, to form an extrudate, and heating the mixture, extrudate, or both to provide a water stable article.

This application describes garments (2), for example swim suits or other sports or athletic garments, in which a plurality of panels (10-22&30-44) are laminated on the outer surface of a base layer (4) of stretchable elasticated fabric to offer (in the case of a swim suit) improved performance for competitive swimmers through a reduction in surface drag, a reduction in form drag and / or improved stability in the water.

The invention relates to a method of designing a mixed ratio for a bitumen mixture based on fractal and distributional features of ore materials. The method comprises the following steps: (1) mathematical models for particle diameter distribution and mass distribution of the ore materials are set up respectively; (2) the type and the grading limit of the bitumen mixture are determined; (3) raw materials are selected and checked; (4) graduations of two arbitrary groups of the ore materials are determined and corresponding fractal dimension values(D) are worked out; (5) the use level of the bitumen is worked out; (6) the bitumen mixture is prepared by stirring; (7) a Marshall test sample is made, the relative density of the bulk volume of the test sample is determined, the theoretical maximum relative density is determined, and the volume index is worked out; (8) relationship curves between the fractal dimension values(D) and the volume indexes are drawn; (9) the graduation of the ore materials and the optimum use level of the bitumen are determined; (10) the road performance of the bitumen mixture is tested; and (11) the construction mixed ratio of the bitumen mixture is determined. The invention utilizes the fractal theory to set up the mathematical models, and in the process of designing the mixed ratio of the bitumen mixture, the optimum bitumen use level and the optimum graduation of the ore materials meeting and regulating all design rules of the bitumen mixture can be quickly determined.

The soil curing agent as one kind of engineering material for curing and stabilizing various kinds of soil is especially suitable for curing silt and other kinds of low viscosity soil. The soil curing agent has main cement material comprising ore powder, flyash and water, as well as proper amount of alkali exciting component, expanding component and surfactant, and is prepared through mixing the materials and grinding to Blaine fineness of 3000-5000 sq m / kg. Specifically, it consists of mineral admixture 40-60 wt%, cement 15-25 wt%, alkali exciting component 5-15 wt%, expanding component 15-25 wt% and surfactant 0.01-0.1 wt%.

The invention discloses a hardening agent for a road. The hardening agent is prepared from, by weight, 10-15% of cement, 1-5% of lime, 2-3% of fly ash, 2-3% of gypsum, 1-2% of coal gangue, 1-2% of zeolite, 3-15% of sulfonated oil, 1-2% of phosphate, 1-2% of caustic alkali, 1-2% of potassium permanganate, 2-4% of sodium chloride, 2-4% of sodium carbonate, 2-3% of calcium carbonate, 2-3% of silicon powder, 1-2% of asphalt, 5-10% of sodium silicate, 1-2% of polyacrylamide, 1-2% of polyacrylic acid, 1-2% of magnesium sulfate, 1-2% of calcium carbonate, 7-10% of tar, 0.1-1% of epoxy resin, 0.6-1% of aniline furfural, 0.3-1% of calcium acrylate and 0.5-2% of carboxymethyl cellulose. The invention discloses a roadbed hardening method. The hardening agent for the road is adopted for hardening.

The invention belongs to a repair material for road construction and a preparation method thereof and in particular relates to cold-patch bituminous mixture which is characterized by consisting of an aggregate, a filling material, bitumen, a diluent and a reinforcing agent, wherein the mass ratio of the aggregate to the filling material to the bitumen to the diluent to the reinforcing agent is 100:(1-10):(3-6):(0.5-2):(0.1-2). The method has the advantages of simple preparation process and low cost; and the prepared cold-patch bituminous mixture has the characteristics of high strength and long service life. The cold-patch bituminous mixture is especially suitable for repair of road potholes; and the construction is convenient and rapid, dose not close traffic, dose not pollute environment and is not restricted to weather conditions.

The invention discloses a visible-light catalyst for degrading rhodamine B in water. The chemical formula of the visible-light catalyst is shown as [Cu12(1, 2, 4-triazole)8(H2O)2][alpha-SiW12O40].2H2O. The visible-light catalyst is a compound consisting of a metal-organic framework constructed based on a polyoxometallate structure and a three-dimentional framework structure. Four types of Cu ions which are independent on the crystallography exist in the compound; the Cu ions are mutually connected with a ligand 1, 2, 4-triazole to form a two-dimensional bicycle positive ion framework structure with co-existing of a ternary ring and a deca-membered ring; [alpha-SiW12O40]<4-> negative ions are respectively connected to three copper ions on the two-dimensional dual rings through end group oxygen atoms to form the three-dimentional framework structure. The visible-light catalyst has the advantages of simple preparation method and excellent water stability and can be recycled after degrading; the visible light catalyst is used for degrading the rhodamine B in water by using the light catalyst, so that the solar energy can be fully used. The visible-light catalyst is simple in process, low in cost and excellent in catalytic effect.

Disclosed is a new soil curing agent, using cement, alkali catalyst, surface active agent and mine refuse as the raw material, mixing and grinding the components by reasonable weight ratio until the specific surface area is 400-900m2 / kg,. The invention has high consolidating strength, good water stability and resistance to coldness, small deformation and wide range of application, its consolidating principle is: In the time of making the basic structure of soil have no dispersion like lightly touching with interface, make use of the potential activity of minerals like silicate and aluminates to make the interface form stead multi-assemble, advancing the essence of soil particle interface, making it have higher strength and water stability. The curing agent can make effect both on interface and in the soil unit, further developing the theory of soil consolidation in the general temperature.

Water stable fibers and articles made therefrom are formed from a thermoplastic composition comprising destructured starch, polyhydric alcohol, acid, and optionally triglyceride. Processes for making water stable compositions may comprise melt extruding a mixture of destructured starch, polyhydric alcohol, acid, and optionally triglyceride, to form an extrudate, and heating the mixture, extrudate, or both to provide a water stable article.

The invention discloses a metal organic framework adsorbent. A sulfonic acid funtionalized metal organic framework material MIL-101(Cr)-SO3H serves as a carrier, Ag(I) serves as an active ingredient, the active ingredient is loaded to the carrier by virtue of an ion exchange reaction, and the loading capacity is 10-40wt% based on the total amount of the adsorbent. The invention also discloses a method for preparing the metal organic framework adsorbent. The method comprises the following steps: preparing the MIL-101(Cr)-SO3H, mixing the MIL-101(Cr)-SO3H with solution of Ag(I), carrying out an ion exchange reaction, thereby obtaining the adsorbent MIL-101(Cr)-SO3H Ag. The preparation process is simple, the conditions are mild, and the prepared adsorbent can realize high-selectivity separation on olefin / alkane mixed gas and has good industrial application prospects in the deep desulfurization aspect of fuel oil.

The invention discloses a method for improving expansive soil and a construction method thereof. The method for improving expansive soil comprises the following steps of: 1) at the mass ratio of 15-20% of modifying agent and dry soil, evenly stirring the modifying agent and expansive soil to obtain composite soil; 2) determining the optimal moisture content of the composite soil; 3) regulating the moisture content of the composite soil obtained in step 1) to keep at the optimal moisture content; and under the natural condition, tightly covering materials to obtain the improved expansive soil. The method is characterized in that the modifying agent is blast furnace grain slag, and the blast furnace grain slag comprises the following main chemical ingredients in parts by mass: 38-43% of CaO, 33-38% of SiO2, 15-16% of Al2O3 and 4-8% of MgO. According to the improved expansive soil, the expansibility of the expansive soil can be eliminated, the water stability of the expansive soil is improved, and the strength required by the engineering is satisfied.