563results about How to "Improve waterproof function" patented technology

The invention discloses a lightweight high-performance foam concrete, which is composed of the following components in parts by weight: 50 to 60 parts of cement, 20 to 35 parts of mineral slag, 15 to 20 parts of fly ash, 5 to 10 parts of gypsum, 60 to 80 parts of fine aggregate, 2.7 to 7.3 parts of additive, 0.1 to 0.2 part of fiber, 32 to 45 parts of water, and 5 to 25 parts of foam. The invention also discloses a preparation method of the foam concrete. The foam concrete has the advantages of small volume-weight, high strength, low water absorption, and small contraction rate, and has the waterproof and anti-cracking functions at the same time.

A continuous-coil type waterproof slide fastener includes two support tapes each having opposing first face and second face, two rows of coupling elements respectively formed of a continuous length of monofilament and respectively secured to along the inner longitudinal edge of the second face of each of the two support tapes, a high polymer elastic member bonded to the vertical wall of the inner longitudinal edge of each support tape and transversely extending from the vertical wall of the inner longitudinal edge to a predetermined distance, each high polymer elastic member further having a covering portion on the inner longitudinal edge of the second face of the associating support tape and a filling portion penetrates into inner chinks in the associating row of coupling elements, and a fluid impervious film covered at least on the first face of each support tape and the associating high polymer elastic member.

An electrical connector includes an insulating housing, a plurality of conductive terminals installed in the insulating housing and a metallic shell shielding around the insulating housing. The insulating housing has a mating portion extending forwardly thereof. The metallic shell surrounds to form a mating cavity into which the mating portion extending and a joint communicating with the mating cavity. The conductive terminals are exposed to one face of the mating portion. The joint is filled with soldering material to form a soldering segment. The electrical connector has good waterproof function with the soldering segment in the joint.

The invention relates to a shock-resistant and damp-proof power battery set which comprises an outer shell (1), a plurality of cells (2) arranged inside the outer shell (1) and a charging/discharging protection circuit board (3) in electric connection with the plurality of cells (2), wherein a support structure (5) constraining the positions of the plurality of cells (2) axially and radically is fixed in the outer shell (1), the plurality of cells (2) constrained in the support structure (5) are arranged with a clearance in between. The cells in the battery set can be positioned reliably to keep a sound electric contact, has very good shock-resistant performance and heat dispersion performance and is very suitable to be used on various power battery sets in shaking circumstances.

The light emitting diode assembly for an illuminated sign is disclosed having an enhanced waterproofs function and an enhanced durability. The light emitting diode assembly includes a case being open upwards, in which a connecting recess is formed on upper portions of both sides of the case. A printed circuit board is installed in the case and being mounted on upper sides of a plurality of light emitting diodes. The hollow cap is coupled in the connecting recess of the case, in which a plurality of wires passes through the cap. A synthetic resin material for covering the printed circuit board, the cap and the light emitting diode, is filled in the case. In this structure, the light emitting diode assembly can prevent the printed circuit board, transformer and the light emitting diode from being damaged by using an epoxy resin.

A self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover, and an insulated wallboard solve technical problem in a prior art that self-leveling cement mortar with weak waterproofness causes weak insulation effect of an insulated wallboard. A self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover is employed as a technique. Ingredients of the self-leveling cement mortar dry powder comprise a compound impervious component; and the impervious component is prepared by mixing a redispersible high-molecular polymer and one of an organosilicon waterproof agent and a stearate, or a mixture of the two, and accounts for 0.6-4.3wt% of the self-leveling cement mortar dry powder. A special impervious ingredient is added to enhance compactness, microdilatancy and low dry shrinkage property of the cement based self-leveling mortar, so as to substantially increase waterproof function and endurance of the cement based self-leveling mortar. Therefore, a problem that a cladded super-light foaming cement sheet material loses insulation function due to water penetration and problems of flame resistance and endurance are solved fundamentally.

A grommet mounted in a through-hole in a vehicle body panel and through which a wire harness is passed. Even if taping only one side, the grommet shape is retained and the grommet is prevented from deforming in the direction in which an engaging recess of the grommet separates from the peripheral edge of the through-hole. The grommet comprises: an enlarged-diameter tube which connects to the outer periphery of the longitudinal intermediate section of a small-diameter tube through which wires are tightly passed, and which is enlarged in diameter to surround the other side of the small-diameter tube; an engaging recess which is annularly formed in the outer peripheral surface of the enlarged-diameter tube on the large diameter side thereof; inner ribs provided at intervals in the circumferential direction and connecting between the inner periphery of the enlarged-diameter tube and the outer peripheral surface of the other side of the small-diameter tube; and wire insertion tubes which connect to through-holes for wires formed in the enlarged-diameter tube and which extend through the inside of the enlarged-diameter tube and project from the opening end on the large-diameter side. The inner ribs stick out with a clearance from the inner peripheral surface of the enlarged-diameter tube from the position where the enlarged-diameter tube contacts the inner peripheral surface of the through-hole of the vehicle body panel to a position facing the engaging recess.

The invention provides a novel waterproof air-permeable plastic film which is prepared from the following raw materials in parts by weight: 40-80 parts of high-polymer plastic, 20-60 parts of filler and 1-5 parts of auxiliary material. The high-polymer plastic is selected from at least one of polyethylene, polypropylene, thermoplastic elastomer and the like; the filler is selected from at least one of smectite, bentonite and titanium white; and the auxiliary material is selected from at least one of high-polymer wax, modified poly-terephthaloyl p-phenylenediamine, calcium stearate and the like. Due to the adoption of the plastic film (biaxial or uniaxial) stretching technique, the natural mineral filler with special functions is added to the raw material formula of the waterproof air-permeable plastic film, so that the waterproof function of the air-permeable plastic film is greatly enhanced on the premise of not influencing the air permeability of the material.

The invention relates to a method for manufacturing waterproof soft-surface leather. The method comprises the steps of waterproofing treatment and finishing treatment, wherein the waterproofing treatment is as follows: adding a waterproof material (accounting for 0.1-0.3wt% of leather) and polyacrylic acid derivatives (accounting for 1-2wt% of the leather) into a big drum to regulate the pH value to 4-6, adding waterproof fat liquor (accounting for 8-12wt% of the leather), rotating for 50-90 minutes, adding fluorine waterproofing agent (accounting for 3-4wt% of the leather), adding 1.2-1.5% formic acid to regulate the pH value to 2.5-4.5, washing with water, changing bath, regulating the pH value to 2.5-4.5 by using formic acid, adding trivalent metal salt (accounting for 3wt% of the leather), rotating for 60-90 minutes, washing with water, discharging, squeezing to remove water, spreading, carrying out vacuum-drying, remoistening, and vibrating to soften the leather, thereby obtaining the waterproof leather. The leather manufactured by the method of the invention has the advantages of excellent dynamic waterproofing property, high-temperature yellowing resistance and light resistance, has physical and chemical indices and appearance properties of common vamp leather. The leather is the main material for shoemaking enterprises, especially for novel battle boots for People's Liberation Army and People's Armed Police.

The invention provides a mobile terminal and a side key structure thereof. The side key structure of the mobile terminal comprises a shell, a side key and side key silica gel, wherein the shell is provided with a side key hole; the side key comprises a pressing part and a skirt part arranged at the edge of the pressing part; the pressing part is inserted into the side key hole and is limited through the skirt part; and the side key silica gel is arranged in the shell and is used for isolating the shell into an inner region and a side key acting region, so as to prevent foreign matters from entering the inner region from a gap between the side key and the side key hole when the side key is pressed down. Through the manner, the inner region of the shell can be completely isolated from the outer space; the mobile terminal and the side key structure thereof have good waterproof and dustproof functions; and the side key and the side key silica gel are separately and fixedly arranged, so that the cost of a double-colored injection mould in the prior art is saved and the production cost is reduced.

The invention provides leaking-resistant concrete. A construction raw material of the leaking-resistant concrete comprises, by weight, 90-110 parts of cement, 300-360 parts of coarse aggregates, 230-270 parts of fine aggregates, 50-80 parts of fly ash, 20-40 parts of additives and 50-60 parts of water. The additives comprise air entraining agents, leaking-resistant fibers, expanding agents, waterreducing agents and waterproof agents. The total alkali content of the leaking-resistant concrete is smaller than 2.25kg/m<3>, the raw material is simple, and the concrete is convenient to construct.Inner gap structures of the concrete are changed by the air entraining agents, a capillary channel is cut off, the leaking-resistant fibers have crack-resistant effects on gaps, and the brittleness ofthe concrete is reduced. The leaking-resistant concrete is used for construction of a roof structure, the leaking-resistant strength of the leaking-resistant concrete is far higher than that of common concrete after the leaking-resistant concrete is stirred, poured, vibrated and maintained, water seepage and water leakage of the leaking-resistant concrete are omitted through 14-day testing, and the leaking-resistant concrete is higher in weather resistance and cannot easily crack.

A door weather strip includes an upper extrusion molded part installed on a door sash on a roof side; a molded part without a slit thereon, connected to the upper extrusion molded part on a door corner part; and a lower extrusion molded part installed on a vertical part of the door sash and detachably inserted into the molded part; the upper and lower extrusion molded parts and the molded part having a base bottom part and a hollow seal member formed thereon, in which: a seal bead is formed on the molded part, the seal bead extending from an inner-cabin side toward an outer-cabin side relative to the base bottom part of the molded part on the roof side and descending along an outer-cabin side of a part of the molded part on the vertical part side of the door sash.

The invention relates to a colorful ceramic tile joint mixture which comprises the raw materials based on weight percentage as follows: 35%-50% of white portland cement, 45%-60% of quartz powder, 0.05%-0.3% of hydroxypropyl carboxymethyl hydroxypropyl cellulose, 0.055-0.25% of water repellent and 1%-3% of pigment. After the colorful ceramic tile joint mixture is used, the constructability is greatly improved, the deformability is improved, the water resistance is realized, the compactedness is increased, the cracking resistance is improved, and the color is more durable and gorgeous.

Disclosed is a shakeproof power battery pack device. A bracket structure which limits the positions of a plurality of battery pack units(2) is arranged inside a shell(1); the bracket structure comprises a lower bracket(51), an upper bracket(55) and at least one middle bracket(52) arranged between the upper bracket(51) and the lower bracket(55); a plurality of locating holes(53)or locating semi-holes(56)which are respectively used to clamp the batteries are arranged on the brackets; one battery pack unit(2) is arranged between the lower bracket(51)and the middle bracket(52) and one battery pack unit(2) is arranged between the middle bracket(52)and the upper bracket(55); the battery pack units(2) are vertically stacked into a whole body and are encased in the shell. The batteries of the battery pack are reliably positioned and are of good shake resistance, so the electric cores can have good electric contact and good heat dissipation; therefore the shakeproof power battery pack device is suitable for power battery pack device under vibration conditions.

The invention relates to an anti-corrosion inclusion bored concrete pile used for saline soil foundations and a construction method thereof. The bored concrete pile comprises a concrete pile body in structure, wherein the inside of the concrete pile body is provided with a reinforcement cage, a flexible, watertight and anticorrosive protection tube is covered on the bottom and periphery of the concrete pile body; and the watertight and anticorrosive protection tube is formed by hot-pressing or welding n layers of polyethylene geotextile bags and n-1 layers of geomembranes, and n is not less than 2. The construction method comprises the following steps: injecting cement mortar between pile holes and the watertight and anticorrosive protection tube, then injecting water in the watertight and anticorrosive protection tube to ensure that the watertight and anticorrosive protection tube expands to the pile hole wall, then injecting concrete paste in the watertight and anticorrosive protection tube, discharging water from the watertight and anticorrosive protection tube by using the concrete paste, and obtaining the bored concrete pile when concrete is set. The invention solves the anticorrosive problem of the concrete pile in saline soil areas, effectively reduces the production cost of the anti-corrosion bored concrete pile and satisfies the strength requirements of projects. The anti-corrosion inclusion bored concrete pile of the invention is applicable to the concrete pile construction with anticorrosive requirements and is especially used in saline soil foundations.

The invention relates to hydroxyapatite overlength nanowire flameproof paper with a waterproof function. The hydroxyapatite overlength nanowire flameproof paper with the waterproof function has super-hydrophobicity and fireproof and flame-retardant functions. The main component of the flameproof paper is hydroxyapatite overlength nanowire. The product also contains fatty acid salt or a perfluorinated compound modified on the hydroxyapatite overlength nanowire. The fatty acid salt or the perfluorinated compound carries out surface modification on the hydroxyapatite overlength nanowire. As hydroxyapatite overlength nanowire has rich surface reactive groups, the hydroxyapatite overlength nanowire is easy to undergo surface modification. Thus, the hydroxyapatite overlength nanowire is easy to combine with the fatty acid salt or the perfluorinated compound such that the hydroxyapatite overlength nanowire flameproof paper is endowed with an excellent waterproof function.