61results about How to "High resin content" patented technology

The invention pertains to the technical field of the copper clad laminate, which more particularly relates to a prepreg applied to a printing circuit multilayer board. The prepreg comprises reinforced materials and resin composite, wherein, the reinforced materials is glass fiber paper, and according to part by weight, the formulation of the resin composite is as follows: 20 to 84 portions of resin, 0 to 35 portions of filling materials, 0.01 to 0.3 portions of curing accelerator and 10 to 45 portions of solvent; the resin composite solvent is soaked in the glass fiber paper for 1 to 5 minutes, and is put in a 140 to 200 DEG C oven for baking for 2 to 10 minutes; after the solvent is removed, the prepreg applied to multilayer PCB processing materials is obtained; white flake and spot problems of base materials during the manufacturing procedures of the multilayer PCB are prevented, problems of de-lamination, shrink resin, holes and crack of the resin and white flake, etc. that come up after the multilayer PCB goes through cold and hot impact are improved, and the prepreg has good reliability and low cost.

In a separator for a fuel cell according to the invention, a separator is formed by a molding a bondcarbon compound in which a composition ratio of graphite powder is set to 60 to 90%, and a composition ratio of a thermosetting resin is set to 10 to 40%, and at least a top end face of each of a number of ribs contacting the surface of an anode or a cathode is coated with a conductive film made of a material which is lower in specific resistance than the bondcarbon compound. According to this configuration, while excellent moldability and high productivity are ensured by the use of the bondcarbon compound containing a larger content of a resin, the contact resistance with respect to an electrode is lowered so that the conductivity of the whole can be improved, and predetermined performance of a fuel cell can be surely exerted.

A decorative laminate is provided and includes a core having a plurality of stacked paper sheets which are impregnated therein a melamine-formaldehyde resin and an internal plasticizer for the melamine-formaldehyde resin, the plasticizer comprising an amino-functional monomer; a decorative sheet overlying the core, the decorative sheet having impregnated therein a melamine-formaldehyde resin and an internal plasticizer for the melamine-formaldehyde resin; and, optionally, an overlay sheet on the decorative sheet. A combustion accelerant is also included in the resin.

The invention provides a thin-coating two-component anticorrosive coating for the surface of a precise steel structural part, wherein the two-component anticorrosive coating is composed of a componentA and a component B. The component A is composed of an epoxy resin liquid, graphene slurry, a zinc powder, flaky pigments and fillers, an auxiliary agent and a diluent. The component B is composed ofa polyamide curing agent and a mixture of xylene, n-butanol and cyclohexanone. The component A and the component B are evenly mixed according to the weight ratio of (5-15):1. The graphene slurry is prepared by adding powdery graphene and a dispersant into a mixed solvent under a stirring state, and dispersing in an ultrasonic oscillator to obtain the stable dispersed slurry. A coating layer has excellent cathodic protection effect, can be thin-coated to about 10-15 microns, still has good corrosion resistance, and can partly replace traditional phosphorization and oxidation processes.

The invention provides a processing process of a large-diameter anti-static fiber glass epoxy plastic pipeline. The process is characterized in that a carbon fiber felt is uniformly wound on a pipeline die, so that the carbon fiber felt is flatly coated on the outer wall of the pipeline die; after the carbon fiber felt is immersed by epoxy resin, fiber glass high-strength yarns and carbon fiber yarns are spirally wound on the pipeline die, and an anti-static high-strength fiber glass epoxy plastic pipeline produced by high-temperature cure heating after the winding is completed; and in the processing process, the carbon fiber inner felt, the high-strength carbon fiber, the fiber glass and imported epoxy resin are used as raw materials, and wounding formation, steam heating by stages and high-temperature inner die curing formation are adopted. The process comprises the following specific steps: preparing materials; winding the carbon fiber felt; adding carbon fibers; heating with steam by stages; curing and forming; and processing and finishing, thus obtaining a finished product pipeline. The pipeline provided by the invention has the advantages that the anti-static performance, the physical strength index of the material and the anti-corrosion index are not reduced at an environmental temperature of minus 40-120 DEG C, and the anti-static, anti-aging and anti-fatigue service life is not lower than 30 years under the condition that the pipeline is exposed in the sea.

The invention relates to manufacturing method of vehicle components, as well as vehicle components and a vehicle. The method comprises the following steps of: a, layering continuous-filament woven fabric to obtain a layering structure (1); b, laying a resin film (2) at the bottom of the layering structure (1), and then performing pre-cutting to obtain a fibrous preform (3); and c, placing the fibrous preform (3) in an injection mold with an injection molding space (8), after mold clamping, injecting an injection molding material (6) containing discontinuous fibers and thermoplastic resin into the injection mold, so that the injection molding space (8) is full of the injection molding material (6) through injection molding and the fibrous preform (3) is infiltrated with the injection molding material (6), and performing pressure maintaining and forming so as to obtain the vehicle components (7). The method belongs to revolutionary innovation of a conventional low-pressure injection molding process. The manufactured components can meet the requirements of mechanical properties and formability at the same time. The problems of difficult forming by the conventional laminating process and low mechanical performance of the conventional injection molding process are solved.

Process for manufacturing a self-sealing elastomer composition, wherein the process comprises the following steps: firstly a masterbatch comprising at least one diene elastomer and a thermoplastic plasticizing hydrocarbon resin with a content greater than 30 phr is manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the “hot compounding temperature” which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything, in the same mixer or in a different mixer, at a temperature or up to a maximum temperature which is kept below 100° C., in order to obtain said self-sealing composition, and wherein at least one liquid plasticizer having a glass transition temperature (T_g) below −20° C. is furthermore incorporated in an amount of less than 60 phr into said masterbatch or into said composition.

According to this invention, plants of the genus Triodia are harvested for use as a renewable energy source or as a means of carbon sequestration. Triodia is a hummock-forming grass endemic to Australia, commonly known as spinifex. It is an abundant perennial plant which grows in semi-arid and arid regions. The novel use of Triodia as a biofuel feedstock has many advantages over the prior art. Being perennial, there is no need to plant and fertilise crops. The plants can be continuously harvested without damaging the soil. Triodia grows well with even small amounts of natural rainfall.

The invention discloses a dipping method. The method includes the steps of S10, conducting presoaking, wherein reinforcing materials and glue are provided, the glue comprises resin composite and solvent, and the reinforcing materials are presoaked in glue; S20, conducting pre-drying, wherein the presoaked composite is pre-dried, the drying temperature is controlled between 110 DEG C and 170 DEG C, solvent is dried away, resin is attached to the reinforcing materials to form the composite, and the proportion of volatile matter in the pre-dried composite is controlled between 0.25% and 3%. By strictly controlling the pre-drying temperature and controlling the content of volatile matter in the pre-dried composite between 0.25% and 3%, the reliability of a prepared dipping piece and a corresponding laminating plate is well kept, and good industrial application prospects are achieved.

The invention relates the production method of large-scale corrosion resistant and heatproof glass fibre reinforced plastic barrel. The method comprises the following steps: sticking the demoulding film on the surface of die; then spraying bisphenol A unsaturated mylar and staple glass fiber mixture on the surface of die, solidifying to form barrel inner covering; the high strength glass fiber soaked with epoxide-resin glue winding around the surface of barrel inner covering, solidifying to form double layer barrel; spraying heatproof 191 resin and staple glass fiber mixture on the surface of high-intensity glass fiber, solidifying, demoulding, polishing, collating and forming barrel. The three-layer composite construction possesses the characters of fire resistant and corrosion resistant, forming above 5000m3 glass fibre reinforced plastic barrel.

The invention relates to a macromolecular photoinitiator, wherein a hydrogen abstraction type photoinitiator benzophenone is used as a core, and a (methyl) acrylate group is introduced into one benzene ring of the core. According to the invention, by polymerizing a (methyl) acrylate group into a macromolecular photoinitiator with a specific molecular weight range, the macromolecular photoinitiatorhas high solubility and high compatibility in an ester solvent, and the benzophenone photosensitive group on the side chain can initiate polymerization of the active monomer in a colored glue under ultraviolet light; and if the other benzene ring of benzophenone as a side chain contains a hydrogen-donor group, the hydrogen-donor group can significantly improve the initiation efficiency of the photoinitiator and the polymerization speed of the system.

The invention discloses a method and a device for leaching high-quality lignite wax. The leaching method comprises the followings steps: smashing lignite, sieving by use of a sieve with the hole size of 1.0-8.0 millimeters, and drying until the water content is 15-25 percent; loading the dried lignite and a straight-chain paraffin solvent into a leaching device at a temperature of 0.5-1.5MPa at a material-liquid ratio of (1:2)-(1:5) (kg/L), soaking at the temperature of 10-40 DEG C for 3-6 hours, and performing material-liquid separation to obtain leach liquor and residual lignite; putting the leach liquor into a separating device, and heating to 30-60 DEG C or reducing the pressure to 30-60KPa for evaporating the solvent to obtain lignite wax and a solvent; putting the leached residual lignite into a desolventizer, and heating or evaporating the residual solvent under reduced pressure under the conditions of the step C to obtain lignite residues and the solvent. The leaching device comprises a leacher, a fluid wax evaporation-separation tank and a solvent storage tank. According to the method, low-toxicity straight-chain paraffin is taken as a leaching solvent, and a leaching process is performed at the room temperature or a temperature higher than the room temperature, so that energy conservation and environmental protection are facilitated, and the resin content and asphalt content of the wax are low.

The invention discloses a low-dielectric polyperfluorinated ethylene propylene copper-clad plate and a preparation method thereof. The preparation method comprises the following steps: performing pretreatment on chopped glass fibers, performing modification with a silane coupling agent, adding a dispersing agent to perform fluffing by a fluffer, and enabling the glass fibers to be uniformly dispersed; drying the dispersed glass fibers to remove water, adding polyperfluorinated ethylene propylene emulsion, uniformly mixing the polyperfluorinated ethylene propylene emulsion and the glass fibers,and performing dehydration and concentration; coating a high temperature resistant film with a concentrated solution uniformly by using an automatic coater; performing vacuum drying, and taking out the materials after cooling so as to prepare a polyperfluorinated ethylene propylene prepreg; and attaching the prepreg onto a copper foil, and performing pressing by a hot press so as to obtain the copper-clad plate. The copper-clad plate is prepared by selecting a polyperfluorinated ethylene propylene resin, and has a dielectric constant value up to 2-2.5, a dielectric loss value up to 0.0008-0.0015 and the water absorption rate of 0.02-0.05%. The copper-clad plate disclosed by the invention is excellent in dielectric property, low in water absorption rate, good in cohesive property and highin machinability.

The invention relates to a hot melt adhesive composition that, when used as an elastic attachment adhesive (EAA), provides elastic laminates having an initial creep performance of less than 25%. The composition comprises a selectively hydrogenated, high vinyl block copolymer having the structure SEBS or (SEB)_nX amorphous polyolefin such as polyethylene, polypropylene, butylene homopolymers and copolymers, or a mixture of two or more of these, tackifier, and maleated polypropylene oligomer or maleated SEBS.

A method for directly attaching dielectric to a circuit board with embedded electronic devices is provided. That is, a plurality of through holes are produced before embedding an electronic device, wherein plural through holes are corresponding to a plurality of electrodes of the electronic device. So that the plural electrodes of the electronic device is accurately positioned with the through holes if the electronic device is being embedded. On the other hand, since the first dielectric layer is adhesive, the electronic device is directly stuck on the first dielectric layer in order to save cost of adhesive material or metal conductive paste in prior arts.

The invention provides an epoxy resin composition capable of being rapidly cured at medium and low temperatures, an epoxy resin-based composite material and a preparation method thereof. The epoxy resin composition capable of being rapidly cured at medium and low temperatures comprises the following components in parts by weight: 100 parts of epoxy resin, 0.1-5 parts of an imidazole accelerant, 2-40 parts of filler, 30-200 parts of an anhydride curing agent, 1-40 parts of a toughening agent and 0.5-10 parts of a release agent. According to the epoxy resin composition capable of being rapidly cured at medium and low temperatures, the epoxy resin-based composite material and the preparation method of the epoxy resin-based composite material, the medium and low temperature curing time of the epoxy resin-based composite material can be obviously shortened through cooperation of the anhydride curing agent, the imidazole accelerant and other raw materials in the epoxy resin composition; meanwhile, the pultrusion speed of the composite material in a pultrusion process is remarkably improved, and the composite material is excellent in mechanical property and high in glass transition temperature.

The invention relates to a processing technology of a PCB plug hole board. The processing technology is used for manufacturing a PCB. During green-oil printing of the PCB, green oil is formed by mixing special plug hole oil and welding surface-resistant oil according to a mass ratio being 1:1, the special plug hole oil is high in content and does not have developing performance, the saturation ofink in a hole can be ensured by a plug hole, the welding surface-resistant oil is high in developing performance and low in resin content, rework can be ensured when the plug hole is unfavorable, theresin content of the ink of a new plug hole can be ensured when the special plug hole oil and the welding surface-resistant oil are matched to form the plug hole according to a proportion being 1:1, meanwhile, the oil developing performance of the new plug hole is also satisfied, the saturation condition of the plug hole is ensured, rework also can be performed when unfavorable condition occurs, and the scrap of a PCB cannot be caused.

The invention discloses a preparation method of a high-performance polytetrafluoroethylene copper-clad plate. The preparation method comprises the following steps: firstly, dipping electronic-grade glass fabric into polytetrafluoroethylene emulsion to obtain a polytetrafluoroethylene glass fabric-based bonding sheet; extruding and calendering a wide base film by using polytetrafluoroethylene dispersion resin powder to obtain a pure polytetrafluoroethylene adhesive film material; and performing double-sided copper foil coating on a polytetrafluoroethylene glass fabric-based bonding sheet with the weight ratio of 15-80% and a polytetrafluoroethylene extrusion calendering bonding film material with the weight ratio of 20-85%, and performing high-temperature vacuum lamination molding to prepare the high-performance polytetrafluoroethylene copper-clad plate. The dielectric constant [epsilon]r of the prepared copper-clad plate at the frequency of 1 G/10 G ranges from 2.10 to 3.50 and is adjustable. The process provided by the invention can be used for large-scale industrial production, and the prepared combination can improve the RC of the bonding sheet to the maximum extent and reduce the cost.

The invention discloses a full-automatic production line for PEEK production. The full-automatic production line comprises a creel, a yarn collecting plate, a yarn spreading roller, a powder trough, a hot drying machine, a melting and dipping module, a three-roller calender, a cooling traction machine, a cooling pool and a winding machine which are sequentially arranged in the advancing direction of carbon fiber yarns. According to the production line disclosed by the invention, the overall production line is optimized, and powder impregnation of electrostatic feeding, first-layer impregnation of a hot drying machine and second-layer impregnation of a melting impregnating module are adopted, so that the uniformity of a matrix is effectively improved, and the resin content and apparent quality of the prepreg are remarkably improved. The powder impregnation adopts a recovery tube, a pulse dust filter and an electrostatic spraying gun, so that the adhesion rate of the carbon fiber yarns can be effectively improved, and meanwhile, the waste of resin powder is avoided.