7results about How to "With waterproof effect" patented technology

The utility model discloses a car shed film cloth combination connecting piece which comprises a connecting rod and a film cloth body, a flowing groove is formed in the connecting rod, a clamping groove is formed in the position, close to the edge, of one side of the bottom end in the flowing groove, and a clamping plate is installed on the position, close to the edge, above the end, away from the clamping groove, of the connecting rod. A plurality of semicircular grooves are distributed in the rear end of the interior of the flowing groove in a linear array mode, fixing blocks are adjustably installed in front of the semicircular grooves, and one end of the membrane cloth body is located between the semicircular grooves and the fixing blocks. The membrane cloth bodies are placed in the connecting rods and clamped in the semicircular grooves through the fixing blocks, connection of the adjacent membrane cloth bodies is achieved, under the action of the flowing grooves, a certain waterproof effect is achieved, and the damaged membrane cloth bodies can be conveniently and independently replaced after the membrane cloth bodies are damaged in the future.

The utility model discloses a high protective light diving suit, including diving suit coat and diving trousers, the lower extreme fixed connection of diving suit coat has diving trousers, the outer wall positioning of diving trousers installs the knee protection mechanism. The utility model discloses a high protective light diving suit, the knee protection mechanism of setting can strengthen the protection effect of diving suit coat knee, when diving, the knee can contact hard material, coral, rock and the like, and the knee protection mechanism can effectively prevent the knee from being injured, in some diving activities, such as cave diving or wreck exploration, the knee protection mechanism can provide additional security, prevent the knee from being injured in narrow space, in some diving activities that need walking on the sea bottom, the knee protection mechanism can provide better protection, adapt to different seabed topography, can effectively absorb the impact force, protect the knee.

The invention relates to the technical field of hot melt adhesives, and discloses a preparation process of an EVA (ethylene-vinyl acetate) hot melt adhesive with stable adhesion, which comprises the following steps: preparing the following components in parts by weight: 30-60 parts of EVA resin, 6-10 parts of synthetic wax, 3-15 parts of paraffin, 20-30 parts of tackifying resin, 0.5-1.2 parts of pentaerythritol triacrylate, 1-2 parts of antioxidant and 10-25 parts of isobutyltriethoxysilane; s2, EVA resin, synthetic wax, paraffin, pentaerythritol triacrylate and isobutyl triethoxy silicon are added into a reaction kettle according to the weight parts in the step S1, heating is conducted while stirring is conducted to 90-150 DEG C, uniform stirring is conducted, and the stirring rotating speed is 120-200 r / min; then adding an antioxidant into the reaction kettle, continuously heating to 150-180 DEG C, and stirring until the materials are uniformly mixed; the isobutyltriethoxysilane is added and can chemically react with water molecules in air to form a permanent and firm environment-friendly waterproof layer, so that the EVA hot melt adhesive has a certain waterproof effect, and the adhesion of the EVA hot melt adhesive is ensured.

The waterproof plush fabric is characterized in that the waterproof plush fabric sequentially comprises a plush layer, a woolen fabric layer, a filling layer, a positioning layer, a cloth-based adhesive layer and a lining layer from top to bottom, the plush layer is attached to the surface layer of the woolen fabric layer, the filling layer is formed by filling floccules or sponge substances, and a connecting piece is connected between the positioning layer and the woolen fabric layer. The positioning layer and the woolen fabric layer are arranged and tensioned through the connecting piece, the woolen fabric layer forms a specific continuous concave-convex shape under the dual effects of the rebound expansion effect of the filling layer and the tensioning effect of the connecting piece, the cloth-based adhesive layer is used for adhering the positioning layer and the lining layer, and the lining layer is made of waterproof materials. The filling layer is arranged between the woolen fabric layer and the positioning layer, so that a good buffering effect can be achieved, and the appearance keeping capability of the fabric can be effectively improved while the use experience of the fabric is improved; the lining layer has good wear resistance and a waterproof effect, and is used for preventing condensate water from permeating into the filling layer and the woolen fabric layer.

The invention provides a cluster unmanned aerial vehicle ground charging device, and relates to the technical field of unmanned aerial vehicle ground devices. The device comprises a shell, a lining is arranged in the shell, a strap unit is arranged on the shell, an electric control unit is arranged on the shell and the lining, the shell is provided with a cover plate capable of being opened and closed, and the strap unit is arranged on the cover plate; a plurality of machine grooves are formed in the side wall, close to the cover plate, of the lining, and the shapes of the machine grooves are matched with the shape of an unmanned aerial vehicle; the electric control unit comprises a box body arranged on the shell, a control panel, a control circuit and a built-in battery which are electrically connected are arranged in the box body, the control circuit is further electrically connected with a plurality of connecting wires with the number corresponding to that of the machine grooves, and the ends of the connecting wires enter the machine grooves respectively. And the end part of the connecting line in the slot is connected with a USB Type-C interface matched with the unmanned aerial vehicle. According to the invention, the cluster unmanned aerial vehicle can be carried, and the cluster unmanned aerial vehicle can be uniformly and rapidly detected and charged.

The application relates to a fluorine-free water-repellent finishing process of wool worsted fabric, which comprises the following steps: singeing, cleaning, wool scouring for adjusting PH value, water absorption, drying, brushing and shearing, applying fluorine-free water-repellent additives, dip padding, cooling and drying, high-temperature baking, KD tank steaming, constant-temperature and constant-humidity storage and finished product; wherein, 1) the fabric is thoroughly cleaned through flat-width wool scouring and rope-shaped wool scouring; 2) the water temperature of the wool scouring tank is controlled to be 80-90 DEG C, 0.05g / L-0.06g / L of acetic acid is added, the PH value is adjusted to 6.0, and the wool is pressure-cooked for 4-10 times; 3) fluorine-free water-repellent additives are prepared by mixing 40-80g / l of fluorine-free water-repellent agent, 3-6g / l of penetrating agent and 10-25g / l of crosslinking agent; 4) after dip padding, low-temperature drying is carried out first, and then baking is carried out after cooling. Through the fine setting of the finishing process, the optimized preparation of the fluorine-free water-repellent agent, the combination of washing and scouring and reasonable baking, the water-repellent effect is achieved, the green environmental protection requirement is met, the fabric feels soft, and the water-repellent effect is still achieved after washing.

The hydraulic rock drill provided by the present invention comprises a main body, a control valve assembly, a piston, a drill tail, a drill bit and a blocking assembly, wherein the main body has a hydraulic cavity, the control valve assembly is connected to the hydraulic cavity, the piston is located in the hydraulic cavity, the piston has a first through hole, the drill tail has a second through hole, a flow channel through hole is formed in the middle of the drill bit, the flow channel through hole penetrates the drill bit along the extension direction of the drill bit, and the first through hole, the second through hole and the flow channel through hole are connected in sequence; the inner periphery of the drill bit forms a first step surface surrounding the flow channel through hole, and the first step surface faces away from the drill tail; the blocking assembly comprises a support member, a tension spring and a blocking member; the support member and the blocking member are respectively connected to the two ends of the tension spring, the support member is fixed on the inner peripheral surface of the flow channel through hole, the support member is closer to the drill tail than the blocking member, and the blocking member abuts on the first step surface and seals and blocks the flow channel through hole. The blocking member effectively prevents water from entering the hydraulic system, protects the hydraulic system, and prolongs the service life of the hydraulic rock drill.