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234results about How to "Good insulation" patented technology

Resin composition, resin-coated copper foil produced by same and copper-clad plate produced by utilizing resin-coated copper foil

The invention relates to the technical field of copper-clad plates, in particular to a resin composition, a resin-coated copper foil produced by the same and a copper-clad plate produced by the resin-coated copper foil. The resin composition comprises the following components in percentage by weight: 45 to 80 percent of epoxy resin mixture, 15 to 50 percent of stuffing, 1 to 8 percent of curing agent, 0.01 to 2 percent of curing accelerator, and a proper amount of solvent. The resin composition is used to prepare the resin-coated copper foil, and then the resin-coated copper foil is used to produce the copper-clad plate so as to change the prior manufacturing method of copper-clad plates with high comparative tracking index and solve the technical problems of dry flowers, cloth mark exposure and inadequate thickness accuracy of the copper-clad plate and the like; the resin-coated copper foil also has the characteristics of long storage period, easy management and convenient use; and the resin-coated copper foil has a thin insulating dielectric layer, and is convenient to produce thin copper-clad plates with high comparative tracking index characteristic and multi-layer printed circuit boards.
Owner:GUANGDONG SHENGYI SCI TECH

Micromachined thermopile infrared detector

The invention relates to the field of an infrared detector, in particular to a micromachined thermopile infrared detector. The manufacturing technique is simplified and the performance and finished product rate are improved. The manufacture of the micromachined thermopile infrared detector comprises the following steps of: (1) depositing silicon nitride film on the both sides of a silicon substrate by an LPCVD method; (2) etching to remove peripheral silicon nitride film on the frontal side of the silicon substrate by lithography; (3) manufacturing a plurality of Poly-Si strips both ends of which are respectively arranged on the silicon nitride film and the silicon substrate by LPCVD method and photolithographic process; (4) manufacturing a plurality of aluminum strips which form a thermocouple with the plurality of Poly-Si strips by sputtering and photolithographic processes; (5) depositing the silicon nitride film on the frontal side of the silicon substrate by PECVD method; (6) manufacturing an infrared absorption layer (a carbonized photoresist layer) covering the hot junction area of the thermopile with photolithographic process; (7) manufacturing a metal reflective layer (a metal layer) covering the cold junction area of the thermopile with lift-off process; and (8) eroding the back side of the silicon substrate to form a square frustum pyramid shaped groove. The micromachined thermopile infrared detector has reasonable structure design, simple manufacturing process, high detector performance, high finished product rate, good development prospect and is easy to realize.
Owner:ZHONGBEI UNIV

Skin-core structure aerogel composite fibers as well as preparation method and application thereof

The invention discloses skin-core structure aerogel composite fibers as well as a preparation method and application thereof. The preparation method comprises the following steps: treating aerogel particles and a polymer material through a skin-core compound spinning method, and carrying out synchronous compounding on the aerogel particles and the polymer material with a molten state at the tail end of a spinneret orifice through a guide pipe structure or a slit structure; synchronously carrying out wire drawing and cooling to form the skin-core structure aerogel composite fibers, wherein theskin-core structure aerogel composite fibers comprises a core containing the aerogel particles and a skin layer covering the core and the skin layer comprises the polymer material. The preparation method disclosed by the invention has the advantages of simple production technology, uniform aerogel-polymer compounding, complete preservation of an aerogel structure, advanced production equipment andthe like; the obtained skin-core structure aerogel composite fibers have the characteristics of excellent heat insulation performance, heat preservation effect, sound isolation performance, adsorption and filtering performance, thermal stability, no dust, economical efficiency and environmental protection and the like, and have a great application potential in the fields of clothing, home textiles, industrial heat preservation, adsorption and filtering and the like.
Owner:苏州同玄新材料有限公司

Polyimide ultra-short fiber and preparation method thereof

The invention discloses a polyimide ultra-short fiber and a preparation method thereof and relates to the field of fiber preparation. According to the preparation method disclosed by the invention, batch preparation of polyimide fiber products with a fiber diameter nanoscale and a length micro scale can be realized. For the polyimide ultra-short fiber disclosed by the invention, the length of thefiber is 2 to 500mu m, the diameter of the fiber is 0.1 to 50mu m, and specific area is 2 to 30m<2>/g. By utilizing the physical and chemical properties at different heat treatment temperatures in thepreparation process of the polyimide fiber, dispersion and ultrashort properties of the fiber are realized more easily by adopting physical and mechanical methods in a state that the polyimide fiberis incompletely imidized; then complete imidization of the polyimide fiber is realized by high-temperature treatment; finally, the polyimide ultra-short fiber is obtained by a method of mechanical pulverization, lapping and shifting. The polyimide ultra-short fiber obtained by the preparation method disclosed by the invention has the characteristics of high and low temperature resistance, ultraviolet irradiation resistance, good insulating property and the like, and can be used for preparing a slurry coating solution, reinforcing resin, rubber and the like, forming pulp and the like.
Owner:JIANGXI XIAN CAI NANOFIBERS TECH

Traction, rolling and unrolling device of heat preservation quilt for solar-panel greenhouse

The invention discloses a traction, rolling and unrolling device of a heat preservation quilt for a solar-panel greenhouse. The traction, rolling and unrolling device comprises the solar-panel greenhouse, an unrolling device, a rolling device and the heat preservation quilt, wherein the top of the solar-panel greenhouse is arched; the unrolling device and the rolling device are respectively arranged on the two lateral walls of the solar-panel greenhouse; one end of the heat preservation quilt is fixedly provided with an unrolling guide rod, and the other end of the heat preservation quilt is fixedly provided with a plurality of evenly-distributed rolling ropes; the unrolling guide rod is fixedly provided with a plurality of evenly-distributed unrolling ropes; the other ends of the unrolling ropes are fixed onto the unrolling device; the other ends of the rolling ropes are fixed onto the rolling device; a pair of guide plates in front-rear symmetry are arranged on the front and rear lateral walls in the length direction of the solar-panel greenhouse; the unrolling guide rod is slidably arranged on the guide plates. By the traction, rolling and unrolling device, the heat preservation quilt is flat and smooth when being unrolled at the top of the solar-panel greenhouse, and a better heat preservation effect is achieved; when the heat preservation quilt is rolled, the heat preservation quilt is stored at the lower end of the lateral wall of the solar-panel greenhouse, and sunlight incidence is unaffected.
Owner:DONGGUAN TIANHE ELECTROMECHANICAL DEV CO LTD

Flame-retardant smoke inhibitor for sprayed polyurethane foam as well as preparation method and application of flame-retardant smoke inhibitor

The invention relates to a flame-retardant smoke inhibitor for sprayed polyurethane foams as well as a preparation method and application of the flame-retardant smoke inhibitor, and belongs to the technical field of halogen-free flame retardant. By virtue of inorganic-organic synergistic flame retardant, cerium hydroxide/magnesium hydrate synergistic flame retardant, silicon/nitrogen/phosphorus synergistic flame retardant and intumescent flame retardant techniques and a surface modification technique, the flame-retardant smoke inhibitor is free of halogen and has the characteristics of small addition amount in a sprayed polyurethane foam foamed raw material, good dispersibility, small starting speed influence on the sprayed polyurethane foam foamed raw material and the like. The flame retardant grade of the sprayed polyurethane foam foamed raw material with the flame-retardant smoke inhibitor can be B1 grade, the sprayed polyurethane foam foamed raw material also has the characteristics of low combustion smoke density and environment-friendliness, and the mechanical property can meet the use requirements. The sprayed polyurethane foam foamed raw material with the flame-retardant smoke inhibitor is a relatively ideal fireproof heat-preservation material and has relatively good economic and social benefits.
Owner:山东奥卓新材料有限公司

Plant cultivation device

The invention provides a plant cultivation device. The plant cultivation device comprises a base, wherein a plurality of planting pots are arranged on the base, each planting pot comprises a plurality of unit pots which are superposed sequentially from bottom to top, a pot cover is arranged at the top of the corresponding superposed unit pots in a covering manner, each unit pot is a cubical pot body with a tapering inclination angle, the specification of a top opening of each cubical pot body is greater than that of a pot bottom of each cubical pot body, each cubical pot body has a semitransparent circumferential wall, an annular supporting edge is arranged at the inner circumferential side of each semitransparent circumferential wall, a plurality of ventilation holes are formed in the upper part of each semitransparent circumferential wall, a plurality of drainage holes are formed in the lower part of each semitransparent circumferential wall, a plurality of supporting columns are arranged at the inner side of each semitransparent circumferential wall in an integrated manner, water diversion passages are formed in the supporting columns, a window is formed in one side wall of each semitransparent circumferential wall, and a window plate is hinged to each window; and a watering hole and a charging hole are further formed in each pot cover. According to the plant cultivation device, the floor area is saved, water and fertilizers are efficiently utilized, heat and moisture are preserved, and lighting is guaranteed.
Owner:JIAXING VOCATIONAL TECHN COLLEGE
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