325 results about "Glass fabric" patented technology

The invention relates to the technical field of power cables, in particular to a heat-aging-resistant crosslinked polyethylene insulated power cable and a preparation method thereof. The cable comprises conductor wire cores, an insulating layer, a filling layer, a composite function layer, a steel tape armoring layer and a sheath layer from inside to outside. The insulating layer is composed of semi-conductive crosslinked polyethylene, silicone resin, nano montmorillonite and an HALS light stabilizer; the filling layer is composed of plasticized glass fabric, polyphenylene sulfide and rare earth oxide; the composite functional layer sequentially comprises a heat-conducting inner layer, a flame-retardant middle layer and an anti-UV outer layer from inside to outside; the sheath layer is composed of polyolefin, white carbon black, ceramic silicone rubber, a flame retardant, polyethylene wax and an initiator. According to the cable, cross-linked polyethylene and silicone resin are preferably selected as heat-resistant materials, heat conduction / flame retardance / UV resistance / armored multi-layer synergistic protection is achieved, the mechanical barrier performance is improved, meanwhile, damage of thermal stress to internal materials is reduced, comprehensive improvement of thermal aging resistance is achieved, and the cable is suitable for high-temperature, high-humidity and frequent thermal cycle harsh environments.

The invention relates to the field of copper-clad plates, and discloses a low-dielectric-constant high-performance copper-clad plate and a preparation method thereof.The preparation method comprises the specific steps that epoxy resin, phenolic resin, polyphenyl ether modified resin, modified nano silicon dioxide and the like are taken and mixed to obtain a resin glue solution; impregnating glass fabric in the resin glue solution to obtain a prepreg; laminating prepregs, and covering copper foil for hot pressing; the polyphenyl ether modified resin comprises epoxy resin, diallyl cyanate and fluorine-containing polyphenyl ether resin prepared by reaction of polyphenyl ether, bisphenol AF and benzoyl peroxide; the modified nano silicon dioxide is prepared by reacting allyl glycidyl ether, vinyltriethoxysilane and phenyltris (dimethylsiloxane) silane, then grafting with a phosphorus-containing intermediate to prepare a modified additive, and grafting with nano silicon dioxide, and the phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. The copper-clad plate with high flame retardance, high peel strength, heat resistance and low dielectric constant is prepared.

The invention relates to a high-impact-resistance light-weight high-strength composite board and a preparation method thereof.The preparation method comprises the following steps that S1, a first glass fiber cloth is arranged between two thermoplastic polyurethane films, hot pressing is conducted, and a glass fiber cloth reinforced polyurethane film is obtained; placing the polyamide-polyether block copolymer film between two adjacent layers of glass fabric reinforced polyurethane films, and performing hot pressing to obtain a high-toughness surface layer; s2, adding the modified hollow glass microspheres, bisphenol A epoxy resin, polyurethane modified epoxy resin, dicyandiamide and an accelerant into a solvent to obtain a resin solution; immersing second glass fiber cloth into the resin glue solution, taking out the second glass fiber cloth after the second glass fiber cloth is completely immersed, and baking the second glass fiber cloth to obtain an epoxy glass fiber prepreg; s3, stacking the plurality of epoxy glass fiber prepregs to obtain a low-density core layer; and S4, stacking the low-density core layer between two adjacent high-toughness surface layers, and performing hot pressing to obtain a target product. The high-strength and high-impact-resistance building material has the advantages of light weight, high strength and high impact resistance.

The invention belongs to the technical field of solar cells, and particularly relates to composite glass cloth for a solar cell and application of the composite glass cloth. The glass cloth comprises glass cloth and reinforced epoxy resin attached to the glass cloth, the reinforced epoxy resin comprises epoxy resin powder, liquid epoxy resin, a curing agent and an initiator, and the curing temperature of the reinforced epoxy resin is 130-150 DEG C. According to the technical scheme provided by the invention, the epoxy resin composite glass cloth is additionally arranged on the two sides of the battery piece, so that the problem that a light solar battery assembly is insufficient in strength and cannot pass a hail-resistant experiment is solved; the initiator and the curing agent with corresponding components are matched, so that the surface of the composite glass cloth is not sticky to hands, production, transportation and on-site packaging are facilitated, cross-linking curing can be further performed at a relatively high temperature when a battery piece is finally laminated, and enough bonding strength with an adjacent layer is generated.

The invention discloses glass cloth, prepreg and a printed circuit board. [Problem] To provide a glass cloth capable of achieving a prepreg and a printed wiring board having excellent dimensional stability and capable of suppressing the occurrence of pinholes in the prepreg. [Solution] The glass cloth contains glass yarns as warp yarns and weft yarns, the weaving density of the warp yarns and the weft yarns is 50-110 / 25 mm, the thickness of the glass cloth is 20 [mu] m or less, and the average gap intervals in the weft yarn direction and the warp yarn direction in which meshes are formed are 162-240 [mu] m and 65-200 [mu] m, respectively.

The purpose of the present disclosure is to provide a glass cloth that is capable of realizing excellent dielectric properties and excellent insulation reliability, and that makes it possible to obtain a resin substrate having a small whitening distance.　The glass cloth according to the present disclosure is obtained by weaving glass thread. This glass cloth is surface-treated by a surface treatment agent. A formula A is obtained from the total carbon content in the glass cloth and the carbonyl group-derived peak height as measured by Fourier transform infrared spectroscopy. Formula A: carbonyl group-derived peak height / total glass-cloth carbon content is 10 or greater; and the number of white spots P is 10 pcs. / m2 or less.

The invention discloses a low-loss resin composition containing active ester, a prepreg and a copper-clad laminate, the resin composition comprises the following main components by weight: 30-70 parts of epoxy resin, 30-70 parts of an epoxy curing agent, 0-3 parts of a curing accelerator, and 20-100 parts of a filler; wherein the epoxy curing agent is tetraphenol fluorenyl active ester; the prepreg is prepared by dipping glass cloth in a glue solution formed by the low-loss resin composition and baking the glass cloth in an oven at 80-200 DEG C for 1-20 minutes after dipping is completed, the copper-clad plate is prepared from the prepreg, fluorine-containing tetrafunctional active ester is synthesized through esterification reaction of tetraphenol fluorene and pentafluorobenzoyl chloride, and the fluorine-containing tetrafunctional active ester is used for preparing the copper-clad plate. A rigid fluorene ring structure is introduced, so that the thermal performance of the cured epoxy composite material is favorably improved; therefore, the invention effectively solves the problems that the existing resin composition for preparing the copper-clad plate is insufficient in heat resistance, and in order to meet the requirement of low polarity, the dosage of the filler is increased, the interfacial compatibility of the resin and the filler becomes poor, and the dielectric loss is further improved.

The present invention relates to the technical field of copper clad laminates, and specifically discloses a high-speed copper clad laminate prepared using functional plastics. The high-speed copper clad laminate is formed by hot pressing and curing several functional plastic-modified epoxy-based prepregs; the functional plastic-modified epoxy-based prepregs are made of electronic-grade glass cloth and functional plastic-modified epoxy resin; the functional plastic-modified epoxy resin includes 5-20 parts by weight of functional plastics, 100 parts by mass of epoxy resin, 8-25 parts by mass of a curing agent composition, 5-25 parts by mass of a functional filler composition, 60-150 parts by mass of an organic solvent, and 1-5 parts by mass of a functional additive; the functional plastic is PEEK micropowder; the mass ratio of the total mass of the functional plastic and the functional filler composition to the mass of the epoxy resin is (15-25):100. The high-speed copper clad laminate in the present invention has low dielectric loss and excellent heat resistance, meeting the dielectric performance requirements of 5G high-frequency PCB substrates.

The invention discloses an ultraviolet-cured glass fabric impregnated reinforced material as well as a preparation method and application thereof. The ultraviolet-cured glass fabric impregnated reinforced material comprises the following components in parts by weight: 50-70 parts of main body UV resin; 10 to 15 parts of tripropylene glycol diacrylate; 10 to 15 parts of N-acryloyl morpholine; 15 to 20 parts of cyclotrimethylolpropane methylal acrylate; and 5-10 parts of a photoinitiator. The prepared ultraviolet-cured glass fabric impregnated reinforced material has good cold and hot temperature difference resistance, high temperature resistance and weather resistance, also has good scratch resistance, can be used for processing glass fabric in a manner of photocuring after dip coating, and has the advantages of simple processing technology, high efficiency, low energy consumption and no pollution to the environment.

The invention relates to the technical field of drying equipment, and discloses a drying treatment device for glass fiber fabric processing, which comprises a ventilation shell, the top of the ventilation shell is fixedly connected with a plurality of mounting frames, the tops of the mounting frames are fixedly connected with a heating mechanism, a heating object is arranged in the heating mechanism, and a heat source is provided; the top of the heating mechanism is fixedly connected with an air blowing seat, a blowing fan is arranged in the air blowing seat and provides power for air flowing, the top of the air blowing seat is fixedly connected with a communicating pipe, the communicating pipe can be connected with the air blowing seat and the mounting frame to be used for generating circulating air, and the bottom of the communicating pipe is fixedly connected to the outer portion of the mounting frame. According to the glass fabric drying device, air flow obtained after drying is filtered and dried through the filtering mechanism and the drying mechanism, then the fabric can be preheated through air obtained after drying waste heat, therefore, the glass fabric can be prevented from directly entering the drying device, damage or deformation of the glass fabric is avoided, and then economic losses can be avoided.

The invention provides a rapidly-packaged piezoelectric circular tube hydrophone and a manufacturing method thereof, the rapidly-packaged piezoelectric circular tube hydrophone comprises a piezoelectric hydrophone and a pre-amplification device, the piezoelectric hydrophone comprises an injection molding type polyurethane coating layer, a piezoelectric ceramic circular tube and a base, and the outer side of the piezoelectric ceramic circular tube is sleeved with a shielding ring; the injection molding type polyurethane coating layer completely coats the hydrophone upper end cover, the piezoelectric ceramic circular tube, the shielding ring, the hydrophone lower end cover and the joint of the hydrophone lower end cover and the base; the front placing device comprises an outer cylinder body and a front placing cylinder body, and heat conduction pouring sealant is arranged between the outer cylinder body and the front placing cylinder body. According to the invention, automatic packaging of the piezoelectric ceramic circular tube hydrophone is realized through an injection molding technology, the problem of foams is solved, the packaging efficiency is improved, and the consistency of the piezoelectric ceramic circular tube hydrophone is improved; the shielding ring is used for replacing an original shielding layer made of glass cloth and conductive adhesive, so that the consistency of materials is improved, and the manufacturing technology of the hydrophone is optimized; by means of the heat conduction pouring sealant, air cavities between the shells are reduced, and the heat conduction efficiency is improved.

One aspect of the present invention relates to a prepreg comprising a thermosetting resin composition or a semi-cured product of the thermosetting resin composition, and a glass cloth, wherein the thermosetting resin composition contains molybdenum compound particles (A) and an epoxy resin (B), and the glass cloth contains, with respect to the total amount of components of the glass cloth, 45-55 mass% of SiO2, 20-30 mass% of Al2O3, 3.0 mass% or less of MgO, and 10-15 mass% of P2O5.

The utility model discloses a pneumatic chuck for a glass cloth sending mechanism, which comprises a clamping jaw assembly, the clamping jaw assembly comprises a fixed seat and a plurality of clamping jaws, each clamping jaw comprises a mounting block and a first clamping jaw which are arranged at an included angle, and the connecting position of the first clamping jaw and the mounting block is of an arc-shaped structure, so that the stress area of a stress point is enlarged, the stress is improved, and the service life of the clamping jaw is prolonged. Therefore, the strength of the clamping jaw is enhanced, the situation of jaw breakage is avoided, the number and frequency of replacing the clamping jaw are reduced, and the production efficiency is improved.

Provided is a glass cloth having a single fiber diameter of less than 3.0 [mu] m, a thickness of 15 [mu] m or less, a mass of 10 g / m2 or less, and an excellent dielectric loss tangent. The glass cloth contains 50% by mass or more of SiO2 in the composition, the single fiber diameter of either warp or weft constituting the glass cloth is less than 3.0 [mu] m, the thickness of the glass cloth is 15 [mu] m or less, and the mass of the glass cloth is 10 g / m2 or less.

The invention relates to the technical field of building waterproof materials, in particular to a rubber waterstop for a deformation joint of a combined concrete floor. The rubber waterstop sequentially comprises a composite rubber plate, a self-adhesive rubber sheet and an elastic supporting strip from top to bottom. The composite rubber plate is composed of a modified rubber plate and a glass fabric reinforcing layer arranged on the top of the modified rubber plate. The modified rubber plate is prepared by the following method: putting 90-110 parts by weight of a rubber base material, 4-6 parts by weight of nano zinc oxide, 1-1.5 parts by weight of stearic acid, 2-3 parts by weight of an anti-aging agent, 8-12 parts by weight of a functional aid, 20-30 parts by weight of dioctyl phthalate, 15-30 parts by weight of carbon black, 20-40 parts by weight of kaolin and 1-2 parts by weight of an accelerant into an internal mixer for mixing; performing extrusion molding on the rubber compound by adopting an extruder or a calender, and then performing cutting treatment, thereby obtaining the product. The rubber waterstop provided by the invention not only has excellent waterproof and dynamic sealing effects, but also has excellent mechanical properties and aging resistance; meanwhile, installation is flexible and efficient, and construction and later maintenance cost is reduced.

The utility model discloses a small-breadth gluing mechanism for a laboratory, which comprises a base and further comprises a frame fixedly arranged at the top of the base, a first clamping seat is fixedly arranged at one end of the frame, a second clamping seat is arranged at the other end of the frame in a sliding manner, and clamping parts are arranged in the first clamping seat and the second clamping seat; the top of the frame is provided with a mounting seat in a sliding mode, the two scraper blades are arranged on the mounting seat in a sliding mode, and the mounting seat is provided with an adjusting assembly for adjusting the distance between the two scraper blades. According to the utility model, the clamping plates for clamping the glass fabric are respectively arranged on the first clamping seat and the second clamping seat in a sliding manner, so that the glass fabric can be clamped and fixed, the second clamping seat is driven by the first screw rod to slide, the glass fabric can be tensioned, the tension degree of the glass fabric can be conveniently adjusted, glue is uniformly coated, and the production efficiency is improved. And the gluing quality and the accuracy of experimental data are improved.

The present invention provides a glass cloth which is woven with a glass yarn containing a plurality of glass filaments as warp and weft, and is surface-treated with a surface treatment agent, wherein the glass cloth contains a prescribed region, the region has a value of the following formula (1): (E1 / T1) / (W1 / L1)... (1) which is greater than 0 and is 0.14 or less, in the formula, E1 represents a curvature 2.5 cm ‑1 at the time of the second bending, a curvature 0.5 to +1.5 cm ‑1 between each unit length, a second bending stiffness, unit: N·cm 2 / cm, T1 represents a thickness of the region, unit: cm, L1 represents a beat-up interval of the warp, unit: cm, and W1 represents a warp width, unit: cm, in such a manner that a valley bottom line of a valley generated by bending is bent along a weft direction.

The utility model discloses a heavy anti-corrosion lining of a flame-retardant flue gas desulfurization (FGD) system, and particularly relates to the field of anti-corrosion materials. The utility model provides a flame retardant type flue gas desulfurization FGD system heavy anti-corrosion lining, which comprises a bottom coating, an anti-corrosion lining, glass fiber cloth and a flame retardant nano composite layer, the anti-corrosion lining is arranged on the bottom coating, the anti-corrosion lining is composed of a plurality of lining bodies, a splicing device is arranged between every two adjacent lining bodies, the glass fiber cloth is arranged on the bottom coating, and the flame retardant nano composite layer is arranged on the glass fiber cloth. The glass fabric is arranged on the anti-corrosion lining, and the flame-retardant nano composite layer is arranged on the glass fabric.

The utility model relates to the technical field of raw material storage tanks, and discloses a raw material storage tank for producing epoxy phenolic aldehyde laminated glass cloth rods, which comprises a storage tank, a support is fixedly connected to the outer wall of the storage tank, a discharge port is formed in the storage tank, a hot mixing assembly is arranged in the storage tank, and a hot mixing assembly is arranged in the hot mixing assembly. The hot mixing assembly is used for heating and stirring raw materials, the hot mixing assembly comprises a power supply, the power supply is fixedly connected to the outer wall of the storage tank, and a filtering assembly is arranged at the top of the storage tank and used for intercepting impurity particles contained in the raw materials for producing the epoxy phenolic aldehyde laminated glass cloth rods. According to the utility model, the heating pipe emits heat through the power supply output end, and meanwhile, local overheating of raw materials can be avoided through the temperature equalizing plate I and the temperature equalizing plate II, so that the effect of uniformly heating the raw materials is realized, the problems of local overheating and unstable performance of the raw materials caused by non-uniform heat distribution are solved, and the overall efficiency of a raw material heating link is improved.

To provide a storage method of glass cloth and a glass cloth package capable of maintaining dielectric characteristics of a glass cloth which has excellent dielectric characteristics.SOLUTION: A glass cloth is constituted with a glass yarn including a plurality of filaments being a warp and a weft, and the dielectric tangent in the glass cloth in 10GHz is equal to or less than 0.00200. A storage method includes storing the glass cloth under the atmosphere where the average dew point under the atmospheric pressure in a storage environment is equal to or less than 18°Cdp and the average temperature is equal to or less than 100°C. A package includes a packaging material and the glass cloth stored inside the packaging material, and the steam permeability of the packaging material measured under the condition of 40°C90%Rh is equal to or less than 8 g / (m2×24hr).SELECTED DRAWING: Figure 1

The invention provides a helicopter blade coated iron bonding method. The method comprises the following steps: stripping and cleaning the front edge part of a to-be-repaired old blade; carrying out surface treatment on the clad iron; sequentially laying a plurality of layers of pre-impregnated glass cloth and a layer of adhesive film or a plurality of layers of impregnated glass cloth at the front edge part of the paddle; mounting the treated iron clad on the front edge part of the paddle, and fixing the iron clad and the paddle together; pasting the graphene in-situ heating film on a cover plate; positioning the cover plate and the paddle according to the appearance of the paddle; a plurality of layers of breathable felts are laid on the cover plate to serve as a heat insulation layer; the whole repair area is vacuumized; electrifying the graphene electric heating film to heat the repair area; after curing and heat preservation are finished, the graphene electric heating film is powered off, and vacuumizing is stopped after the temperature is naturally reduced to the specified temperature or below; according to the invention, in-situ heating and pressurizing can be realized, and the technical barriers of non-uniform temperature, inaccurate pressure control and low energy consumption and high efficiency of a traditional curing oven and hot pressing bed forming method are broken through.

The invention discloses a high-strength glass fiber veneer and a preparation method thereof, and belongs to the technical field of industrial veneer materials. Comprising a glass fabric, a covering material and polypropylene, the covering substance is positioned between the glass fabric and the polypropylene and is used for thermally covering the glass fabric and the polypropylene into a whole. The method comprises a method for laminating functional polypropylene on the direct gluing glass fiber cloth and a method for laminating softened polypropylene on the roller pin gluing glass fiber cloth. Respectively stretching the glass fabric and flattening the polypropylene by using a magnetic powder brake; roller-coating the to-be-coated surfaces of the glass fabric and the polypropylene with a coating material to form a pre-coating layer; respectively preheating and roll-coating the glass fabric and the polypropylene to remove moisture and volatile matters so as to prepare glued glass fabric and glued polypropylene; and superposing the surfaces of the glued glass fabric and the glued polypropylene with the pre-coated layers, rolling, covering, heating and curing to form the high-strength veneer. The veneer has the advantages of being high in corrosion resistance, large in bearing temperature difference, long in service life, excellent in fireproof performance, free of steel wire mesh reinforcement and high in strength.

The present application relates to the technical field of aircraft body structure repair, in particular to a method for improving the adhesion of composite material bonding repair metal structure, comprising the following steps: determining the damage range by visual inspection and non-destructive testing method; then using artificial polishing method to pretreat the surface of the damaged part; preparing composite patch material, adhesive and related auxiliary materials; laying the patch according to the design requirements; packaging the vacuum bag, installing the heating unit and curing; post-processing the patch; checking the composite patch; according to the gap size and area size of different regions, cutting the appropriate size of glass fiber fabric; marking the installation position of the patch by using the red pencil line method; mixing the glue; cutting a layer of glass cloth, the size of which is larger than the total size of the required filling size, and the glass cloth is treated by dipping in glue. The present application can effectively control the thickness of the glue layer, increase the controllability of the repair process, improve the tensile shear strength after bonding, effectively improve the actual repair effect, and meet the actual use requirements.

Provided is a glass cloth with which suitable impregnation properties with low dielectric resins can be obtained.A glass cloth includes glass yarns composed of a plurality of glass filaments, woven as warp and weft yarns, and surface-treated with a surface treatment agent, wherein when embedding the glass cloth in an epoxy resin and curing the resin, and thereafter observing a cross section of the glass cloth, a filament adhesion ratio (a number of adhesion points between filaments adhering to each other / total number of filaments) is greater than 0 and 0.80 or less.

According to the present application, there are provided a quartz glass cloth constituted by a glass yarn having a high content of silicon dioxide (SiO2) and having less fuzz, and a prepreg and a printed circuit board, etc. containing the same. The glass cloth of the present application is constituted by a glass yarn containing a plurality of filaments as warp and weft, and the content of silicon (Si) of the glass yarn is 95.0 mass% or more and 100 mass% or less as converted into silicon dioxide (SiO2). The thickness (T) of the glass cloth is 80 μm or less, and satisfies {number of warp bundle segments (N) - 0.2} / thickness (T) [μm] < 0.056.

Provided are: an automotive structural material that makes it possible to prevent chipping and electrolytic corrosion without using protection tape, obviates having to adjust unevenness for the purpose of painting, and moreover can be manufactured in a short time; and a method for manufacturing the automotive structural material. The present invention pertains to an automotive structural material that contains carbon-fiber-reinforced plastic, the automotive structural material having a base layer 3 composed of a cured sheet-molding compound 1 containing staple carbon fiber and a thermosetting resin, and a protective layer 4 that is laminated on the base layer 3 and is composed of a cured glass paper prepreg 2 or a glass cloth prepreg containing glass fiber and a thermosetting resin, the base layer 3 and the protective layer 4 being integrally cured.

The utility model provides a laminated body with excellent sliding property and wear resistance. The laminated body provided by the utility model comprises a base material layer; and a sliding layer which is directly or indirectly laminated on a part or all of the surface of the base material layer and which is mainly composed of a crosslinked fluororesin, the base material layer comprising a fluororesin-impregnated glass cloth.

The utility model discloses a smoke exhaust fan of a moxibustion smoke purification unit, which relates to the technical field of moxibustion smoke purification equipment and comprises a centrifugal casing, a centrifugal impeller, a fan shaft, a driving motor and a mounting frame. A honeycomb activated carbon filtering assembly is arranged at the lower end of the ventilation rain-proof cap, an air inlet of the centrifugal machine shell communicates with a silencing assembly through a flexible connection channel, and the end, away from the flexible connection channel, of the silencing assembly communicates with the purifier. The silencing assembly comprises a shell, a perforated plate, sound absorption cotton and glass cloth. The mounting frame comprises a bottom frame, a buffer seat, a connecting rod assembly and an upper supporting frame. The high-power centrifugal fan is arranged to be sufficient in power, the noise elimination assembly is installed to be connected with the centrifugal fan to conduct noise reduction measures on the outdoor unit, and the centrifugal fan is installed through the installation frame to conduct damping measures on the outdoor unit.

The glass cloth of the present disclosure is a glass cloth made by weaving glass yarns, the glass cloth is surface-treated with a surface treatment agent, the difference between the dielectric loss tangent of the glass cloth at 10 GHz and the bulk dielectric loss tangent of the glass constituting the glass yarn at 10 GHz (the dielectric loss tangent - the bulk dielectric loss tangent) is less than 0.00000; The number of white spots P on the glass cloth is 10 / m 2 The following is the result.

The technical problem to be solved by the present invention is to provide a resin substrate using quartz glass cloth having a low dielectric loss tangent and excellent tensile strength. The solution provided by the present invention is a low-dielectric resin substrate obtained by compounding an organic resin with annealed quartz glass cloth subjected to a heat treatment, wherein the annealed quartz glass cloth has a dielectric loss tangent of less than 0.0010 at 10 GHz and a weight per unit area (g / m2). 2 ) has a tensile strength of 1.0 N / 25 mm or more.