151results about How to "Reduce water retention" patented technology

The invention relates to the technical field of concrete, and particularly relates to neutron irradiation preventing low-hydration-heat barite concrete. The neutron irradiation preventing low-hydration-heat barite concrete comprises the following components in content: 163.8-168kg / m<3> of water, 200-280kg / m<3> of cement, 90-140kg / m<3> of slag powder, 9.5-10.5kg / m<3> of boron glass powder, 850-900kg / m<3>of iron ore sand, 340-360kg / m<3> of iron sand, 1558-1600kg / m<3> of barite, 300-330kg / m<3> of barite sand, 0.85-0.95kg / m<3> of polypropylene fiber and 4% to 7% of a polycarboxylate-type water reducing agent. The neutron irradiation preventing low-hydration-heat barite concrete disclosed by the invention is larger than 3600kg / m<3> in apparent density, larger than 110kg / m<3> in retained crystal water and good in neutron irradiation prevention effect; when being applied to a large-size concrete structure of which the minimum geometric dimension is larger than 1.2m, the neutron irradiation preventing low-hydration-heat barite concrete is low in hydration heat, the internal and external temperature difference is smaller than or equal to 20 DEG C, the adiabatic temperature rise is smaller than or equal to 55 DEG C, and the neutron irradiation preventing low-hydration-heat barite concrete is applicable to a large-size radiation-proof structure. The concrete can reach relatively high requirements in aspects such as retained crystal water, fluidity, cohesiveness and water retention property and has the advantages of guaranteeing the strength and the compactness and controlling the hydration heat.

The invention discloses a production method of high wet modulus bamboo pulp viscose glue fiber, which adopts the steps of dipping, squeezing, smashing, maturing, yellowing, spinning, drawing, refining, drying and the like to prepare high wet modulus bamboo pulp viscose glue fiber. The high wet modulus bamboo pulp viscose glue fiber prepared with the method of the invention has dry breaking strength of 3.2-3.8 CN / dtex, wet breaking strength of 2.0-2.4 CN / dtex and wet modulus of 0.60-0.65 CN / dtex, has the characteristics of high humidity modulus, better purity, favourable affinity for dyestuff, non-fibrillation, non-fibrillar structure and the like, reduces expansion, reduces water retention capacity and improves alkali stability. Prepared fabric has silky luster and draping property, is extremely soft, has excellent dyeability and vivid luster and can keep bright and colorful after being cleaned several times.

An antibacterial rockwool growth medium for hydroponics is used for hydroponic growth of rice, flowers and ornamental plants, fruitage, etc. The medium includes a rockwool base used as a culture medium for hydroponics, and an inorganic antibacterial agent is dispersed substantially uniformly onto an overall surface of the rockwool base or a part of the surface of the rockwool base.

The invention relates to the field of greening, in particular to a plant growth basal disc. The multifunctional organic plant basal disc is a cultivation basal disc with bearing strength and permeable pores which is formed by point combination of fine agricultural waste pieces; according to the volume-to-weight ratio of the cultivation basal disc, the weight is 2.18kg-2.79kg when the volume is W500mm*L330mm*H50mm; and plant seeds are distributed in the basal disc to form a seed layer which is placed at a position 1-2cm on the basal disc. Recycled environmentally-friend artificial soil coming from the nature and returning to the nature is used as the material of the basal disc; agricultural products serving as raw materials also can be regenerated into natural resources and are inexhaustible natural resources. Agricultural wastes and the like in a culture medium are laid on badland or desert to realize lamination so that the badland or desert is greened, weathering of soil and the formation of leaf mold can be promoted, and the early soil improvement of the badland or desert can be realized; therefore, conditions are created for improving environment problems of the earth.

The invention discloses a dehumidifier. The dehumidifier comprises a base, a water tank, an adapter assembly and a water pumping assembly, wherein the base is provided with a containing cavity; the water tank is arranged in the containing cavity; the adapter assembly comprises an upper connector and a lower connector which are connected in a sleeve mode, the lower connector is arranged in the water tank, and the upper connector is arranged on the top wall of the containing cavity; and the water pumping assembly is arranged on the outer side wall of the containing cavity, and the water pumpingassembly communicates with the upper connector to discharge liquid in the water tank after the liquid sequentially passes through the upper connector and the lower connector. According to the technical scheme, a drainage structure of the dehumidifier can be disassembled conveniently.

An insulating member is disposed between the top of a wall and the underside of a roof to more effectively insulate the structure and prevent condensation fostering growth of mold and mildew occurring along the surfaces of the wall, ceiling and roof. A first surface of the insulating member overlies the top plate of the wall extending inward between the ceiling joists a distance of at least 1.5 feet. A second surface overlies the outside surface of the wall extending downward along the exterior of the wall a distance of at least 0.5 feet. A third surface is shaped to substantially conform to the opposing underside of the roof deck such that the space between the roof deck and the wall top plate is sealed off by the insulating member. Multiple air flow pathways extend through the insulating member providing continuous air flow from soffit area into the attic space.

The invention belongs to the technical field of air-conditioning cooling and heating machines, in particular to an air source cooling and heating machine. The air source cooling and heating machine comprises an outdoor heat exchanger 5; wherein the outdoor heat exchanger 5 adopts an annular structure; a baffle 34 is arranged at the annular notch portion of the outdoor heat exchanger; a lining fiber 7 is arranged on the lower part of a cavity of the outdoor heat exchanger 5, and a compressor 8, a reversing valve 6 and a throttling part 9 are wrapped by the lining fiber 7; an outdoor exhaust fan18 is arranged on the upper part of the outdoor heat exchanger 5; and a solar heat absorbing coating is arranged on the outdoor heat exchanger 5. The air source cooling and heating machine has a large heat dissipating surface area per unit volume, can receive the heat of sunlight without frosting during work, and has high work efficiency and low noise, indoor air dehumidification water is used for condensation and heat dissipation in summer, defrosting water is used for indoor humidification in winter, the functions of waste heat for heating water, exchanging of fresh air and automatic cleaning are achieved, and the air source cooling and heating machine is suitable for carbon dioxide circulation

The invention discloses a siloxane-modified phenolic resin for a hot melt preimpregnation technology and a preparation method of the siloxane-modified phenolic resin for the hot melt preimpregnation technology. The siloxane-modified phenolic resin for the hot melt preimpregnation technology is prepared from, by mass, 50-100 parts of phenolic resin, 1-10 parts of toughening agent and 1-20 parts of siloxane. The siloxane-modified phenolic resin for the hot melt preimpregnation technology has the advantages that release moisture is little when the resin is cured, micropore forming can be reduced, flexibility, impact resistance and interlaminar shear strength of phenolic resin cured materials are improved effectively, and the siloxane-modified phenolic resin is higher than traditional RF (phenolic resin) in heat resistance.

The invention discloses a preparation method of a wet type moisturizing and dust-suppressing agent and belongs to the technical field of environmental protection. The preparation method disclosed by the invention has the beneficial effects that due to existence of double electric layers in modified zeolite powder, alpha-1, 4 glucosidic bond is hydrolyzed from the inner parts of starch molecules ina random mode by utilizing endonuclease of alpha-starch amylase, and soybean isolate protein contains more polar groups along the own peptide chain skeleton, so that wetting and absorption for dust in the air are improved; due to addition of ox bile, the wettability of the dust-suppressing agent can be improved, the surface tension of water can be reduced, the water can be prevented from condensing into droplets and the volatilization rate can be reduced; since oxidized dextrin swells after absorbing water, the filling capacity is also increased, and in addition, due to water-absorbing groupssuch as hydroxyl groups and the like exposed in the oxidized dextrin, the action force of the formed hydrogen bonds is stronger; calcium chloride doped in the oxidized dextrin can permeate into a spatial network structure of an oxidized-dextrin grafting product, and after the dust-suppressing agent falls to the ground, the calcium chloride absorbs carbon dioxide to form hard calcium carbonate, sothat diffusion of the dust can be controlled and the application prospect is wide.

The invention relates to expanded perlite fine powder-polymer latex powder composite modified dry mortar, which comprises the following components in percentage by weight: 2.5 to 4.5 percent of composite dry mortar admixture, 23.1 to 23.6 percent of cement, 69.4 to 70.9 percent of river sand, 0.7 to 1.4 percent of cellulose ether, 0.5 to 0.8 percent of acrylic staple fiber, and 0.5 to 0.8 percent of wood fiber. The pressing-breaking ratio of the dry mortar is less than 3, the compressive strength is over 8.8MPa, and the cost of the dry mortar is lowest and only 1 / 3 of polymer latex powder admixture; and the composite dry mortar admixture has remarkable water holding effect, and increases the stretching adhesive strength of the water soaked mortar besides the effect of optimizing mortar construction and accessibility.

The invention relates to a barrenness mountainous region Chinese chestnut plantation method comprising the following steps: digging colonization pits with relatively big density in the hillside one year in advance; filling the colonization pits with turf soil, leaves from the hillside and night soil; mixing in slaked lime if the soil is acidic, mixing in ferrous sulphate if the soil is slightly alkaline, and the slaked lime and ferrous sulphate can keep the soil PH value to be 5-6; using overlay film fermentation to enable the soil in the colonization pit to be rich in sapling growth nutrition; applying phosphorus-containing fertilizer in sapling plantation; slightly lifting the sapling, so the root can fully contact with the fill soil, and the fill soil is higher than the ground so as to reserve water. The fill soil covers the ground so as to reduce ground temperature, and can be deeply plowed into the soil after rotting; two times of foliar fertilizer and additional fertilizer can greatly improve sapling survival rate; an insecticidal lamp around the sapling can control insects so as to greatly reduce pesticide quantity; tests show that the survival rate can be above 98%, and average mu yield in 6 years can improve by 10%.

The invention discloses a cap fungus efficient culture medium using folium cortex eucommiae for inhibiting sundry fungi and preventing hardening. The cap fungus efficient culture medium comprises the following ingredients in parts by weight: grapevine, mulberry residues, chestnut shells, bamboo shoot shells, caulis polygoni multiflori, gulfweed, coconut meals, Japanese banana roots, lotus seed shells, mulberry branch powder, hydrolyzed feather meal, folium cortex eucommiae, tea tree branch powder, dyhydroxybenzene cottonseed protein, dry cow dropping, phosphatidylchline, spirulina dry powder, xylooligosaccharide, fulvic acid, basic zinc sulfate, floatstone, carbon nano tubes and licopin. The cap fungus efficient culture medium has the advantages that the biomass charcoal and the floatstone are adopted, so that the hardening performance and the water retaining performance of the culture medium are reduced; the carbon nano tube loaded licopin and enzyme activity substance zinc are used, so that the absorption and the utilization of cap fungus cells on the elements are prompted; puffing powder pulverized powder, composite powder and the like are used, and rich nutrition is provided for the cap fungi; the folium cortex eucommiae is used, so that the effects of inhibiting sundry fungi and ensuring the Insect damage and pest damage prevention of the cap fungi are achieved. The cap fungi cultured by the culture medium provided by the invention has the characteristics of good color, good taste, good mouthfeel and the like.