44results about How to "Extend outdoor service life" patented technology

A waterproof speaker includes a frame having a flared front opening with a diaphragm mounted thereto; a magnetic element mounted to a rear end of the frame; a voice coil support located in a central gap of the magnetic element and connected to the diaphragm; a suspension; a central post located inside the voice coil support and associated with the magnetic element; a coaxial tweeter connected to the central post; a voice coil located around the voice coil support; and a water-proofing unit located between the voice coil support and the central post without changing the height of the speaker and the stroke of the voice coil. The diaphragm and the water-proofing unit together prevent external moisture from reaching the magnetic element, enabling increased stability of the voice coil and prolonged outdoor service life of the SPEAKER.

The invention relates to the technical field of wind power generation, in particular to an anti-icing wind power generator blade and a preparation process thereof, in which a PVC heat-shrinkable film is provided on the wind power generator blade to prevent the wind power generator blade from being covered with ice under low-temperature weather conditions , including PVC heat-shrinkable film base material, the surface of the PVC heat-shrinkable film base material is subjected to CF 4 After etching, it becomes a rough surface with multiple grooves and pits, and a PTFE coating is deposited on the rough surface. The grooves, pits and PTFE coating form a tight cross-linked network micro-nano surface structure, which does not require The shutdown of the wind turbine does not affect the power generation of the wind turbine, saves manpower and material resources, does not need to be energized and heated, saves a lot of electric energy, does not affect the normal operation of the wind turbine, and fundamentally reduces the icing rate of the wind turbine blades, thereby Under the premise of not damaging equipment and wasting energy, the utilization rate of wind turbines in cold seasons can be improved to ensure the power generation in winter.

The invention discloses a high dirty-resistant and washing-resistant water-based crylic acid cooling coating and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 20-65 parts of crylic acid emulsion, 6-20 parts of glass microbead, 1-5 parts of nanometer infrared ceramic powder, 1-9 parts of phase change material, 10-40 parts of pigment, 8-20 parts of filler, 0.1-2 parts of accessory ingredient and 15-30 parts of water. The high dirty-resistant and washing-resistant water-based crylic acid cooling coating integrates four heat dissipation mechanisms such as reflection, radiation, heat insulation and phase change cooling; and the high dirty-resistant and washing-resistant water-based crylic acid cooling coating has good staining resistance, washing resistance, alkali resistance, water resistance and construction performances and can be directly used for cooling the roof and the outer wall body of a building in summer and takes the action of energy saving and emission reduction. If serving as finish paint, the coating can be combined with an anticorrosive primer to be used for corrosion prevention and cooling of the storage tanks of finished product oil, liquefied gas, natural gas, chemical raw materials and grain oil to perform the effect on protecting the environment, saving water and saving energy.

The invention relates to an outdoor weather resistant SMC (Sheet Molding Compound) material and a preparation method thereof. The outdoor weather resistant SMC material is prepared by adding a novel weather resistant resin, a weather resistant low-shrinkage agent, a weather resistant color paste and an ultraviolet absorber to a main body structure of the traditional SMC material, improving mold release smoothness by using a special processing additive, adding a filler, an alkali-free glass fiber and other auxiliary raw materials to the main body structure and stirring a mixture by using a special stirring process. The outdoor weather resistant SMC material provided by the invention has the advantages as follows: when original excellent performances of the SMC material are kept, ultraviolet oxidation resistance, hydrolysis resistance and high and low temperature resistance are obviously improved; and when the outdoor weather resistant SMC material is in outdoor use, time of resisting color change and color fading as well as time of resisting weather, crack, pulverization and other damages are both greatly prolonged.

The invention discloses an arbitrary-curved-surface plane seamless spliced high-quality large-screen display device. The arbitrary-curved-surface plane seamless spliced high-quality large-screen display device is formed by stacking brick-shaped optical-fiber rear-projection display modules, wherein elements of each brick-shaped optical-fiber rear-projection display module include a variable-cross-section optical fiber panel, a signal processing module, a liquid crystal display panel, an LED (light-emitting diode) light source module, a fixing device, a shell, an anti-dazzling frosting coating and a touch sensing plate. The arbitrary-curved-surface plane seamless spliced high-quality large-screen display device has beneficial effects that a seamless spliced high-quality screen with small dot pitch can be produced, a display video picture of an arbitrary curved surface, a special arbitrary shape, and an arbitrary area can be realized; the seamless splicing principle is the primary-pixel splicing principle, pixel points are uniformly and compactly arranged, and the display consistency of the brightness and color is optimal; by adopting the modularized production, the constitutional part is easy to repair and replace; the touch sensing plate can be embedded into the display device, so that precision in positioning can be realized, and the picture quality and the shape of the display device are not affected; the water resistance and collision resistance are relatively good.

The invention discloses an environment-friendly anticorrosion and temperature-reduction integrated paint for a storage tank and a preparation method of the paint. The environment-friendly anticorrosion and temperature-reduction integrated paint consists of anticorrosion primer, heat-insulation interlayer paint and temperature-reduction surface layer paint. The anticorrosion primer is prepared by taking acrylic emulsion as a filming base material, iron-titanium powder as an antirust pigment filler and calcium carbonate powder, precipitated barium sulphate powder and talcum powder as body fillers, and supplementing auxiliaries and water. The heat-insulation interlayer paint is prepared by taking acrylic emulsion as a filming base material and hollow glass beads as a heat-insulation filler and supplementing auxiliaries and water. The temperature-reduction surface layer paint is prepared by taking acrylic emulsion as a filming base material and titanium dioxide powder, talcum powder, silicon dioxide, hollow glass beads and far infrared ceramic powder as temperature-reduction pigment fillers and supplementing auxiliaries and water. The environment-friendly anticorrosion and temperature-reduction integrated paint can form a film at normal temperature, is friendly to environment, plays a remarkable protection role to the storage tank due to high anticorrosion and temperature-reduction properties, and can be widely used for various storage tanks of oil gas and chemical materials.

The invention discloses a highly sealed outdoor LED display screen, which includes an LED display screen, an outer box, a transparent protective plate, a base, a sealing gasket, a gland and a plurality of fixing mechanisms. The transparent protective plate is bonded to the The front of the outer box, the base is fixed on the opening at the bottom of the outer box by several screws, the LED display is arranged in the outer box, and the bottom of the LED display is fixed on the On the base, the gland is fixed on the front of the outer box through the fixing mechanism, the outer peripheral part of the gasket is pressed between the gland and the outer box, and the seal The inner peripheral portion of the pad is press-fitted between the gland and the transparent protective plate. The invention has excellent sealing performance, good waterproof effect, and prolongs the outdoor service life of the outdoor LED display screen.

The invention relates to the technical field of polymer materials, in particular to a silicone potting glue and a preparation method thereof. The silicone potting glue of the present invention, its preparation raw material comprises component A and component B, and the preparation raw material of described component A comprises: 100 parts of base rubber, double-terminated hydroxyl polydisiloxane A 20- 100 parts, 6-12.8 parts of liquid MQ resin, 0-9.6 parts of plasticizer A, 1.3 parts of pigment and 1.2 parts of deep curing agent; the raw materials for the preparation of component B include: 100 parts of plasticizer B in parts by mass , 10-40 parts of crosslinking agent, 5-25 parts of coupling agent and 0.5-2 parts of organic tin catalyst; the viscosity of the double-ended hydroxyl polydimethylsiloxane is 200-750mPa.s; the base The raw materials for the preparation of the glue include double-terminated hydroxyl polydisiloxane B and semi-reinforcing fillers. The organosilicon potting glue of the present invention is a silicone potting glue with good leveling property and high UV resistance, and can be well used in LED small-pitch display screen modules as potting glue.

Disclosed are a nm compound functional agglomerate for sunshine plate and its preparing method, made of organic nm compound material having been processed on the surface and compounded, copolymer of polycarbonate, antioxidant, light stabilizer and elasticizer and other raw materials, through steps of mixing with super high speed, cooling, particle forming and so on. The invention has outstanding resistance to impact and weather, with impact strength being increased by 20-100%, that its compounded kept being higher than 80%, color change degree being 0-1 degree and resistance to impact being higher than 80% after 1500h artificial accelerated aging experiment by 9 weather experimental equipment, so it is suitable for manufacture of fal low, solid and wave-shaped outside sunshine plate with higher requirement for work condition and weather resistance.