11results about How to "Fully impregnated" patented technology

The invention relates to an epoxy resin composition and a preparation method thereof, and an epoxy resin prepreg and a preparation method thereof. Comprising the following steps: mixing epoxy resin, 2, 4-diphenylmethane diisocyanate and 4, 4-diphenylmethane diisocyanate, and synthesizing under the action of a catalyst to obtain a transparent toughening agent; mixing the mixed epoxy resin and the transparent toughening agent to obtain a first mixed solution; adding a defoaming agent, an ultraviolet light absorber, an antioxidant, a light stabilizer and a fluorescent agent to obtain a second mixed solution; cooling the second mixed solution to 60-70 DEG C, adding a curing agent and an accelerant, preserving heat, vacuumizing, defoaming and mixing for 0.3-0.4 hour to obtain an epoxy resin composition; the invention provides an epoxy resin composition and a preparation method thereof as well as an epoxy resin prepreg and a preparation method thereof. The preparation method of the epoxy resin composition is used for solving the technical problem of no research on heat resistance, high transparency, yellowing resistance and high toughness of an epoxy resin material at present.

The invention discloses a method for manufacturing a high-wear-resistant composite swing hammer head, which comprises the following steps: washing and drying ceramic particles with an oxalic acid solution, uniformly mixing boron carbide ceramic powder and an alcohol adhesive in proportion into a slurry, and drying to remove the alcohol adhesive; then mixing the ceramic particles with NiCrBSi powder and a sodium silicate solution and filling the mixture into a honeycomb mold, taking the mixture out after microwave curing, thereby obtaining a honeycomb ceramic preform with high strength at room temperature, wherein a conical preformed hole is formed on the honeycomb ceramic preform, placing the honeycomb ceramic preform into a casting cavity of a swing hammer head metal mold, and then pouring molten high-chromium cast iron into a runner of the casting mold, wherein the high-chromium cast iron water infiltrates into gaps between ceramic preform particles under high pressure to form a reactive interface, thereby obtaining a high-wear-resistant composite swing hammer head. The method can manufacture a composite swing hammer head with a reactive interface and high wear resistance.

The invention belongs to the field of new materials, and particularly provides a method for preparing a carbon fiber composite material through interface modification, which comprises the following steps: sequentially carrying out high-temperature desizing and activating treatment on carbon fibers to prepare desized carbon fibers activated by hydrogen peroxide, namely CFO for short; the preparation method comprises the following steps: putting CFO into a polyimide acid salt solution, carrying out ultrasonic impregnation to prepare CFO-PAAs, and finally, carrying out high-temperature vacuum treatment on the CFO-PAAs to prepare CFO-PI-COOH. According to the method, the number of polar functional groups on the surface of the carbon fiber is increased, the chemical bonding effect between the carbon fiber and the resin is increased, a stable interface is constructed, and finally the carbon fiber composite material with good mechanical properties is provided.

The application discloses a preparation method of an alumina aerogel heat insulation felt, and comprises the following steps: adding an aluminum source precursor into a ketone substance to form a precursor solution through sufficient dissolution; adding an alcohol solvent containing a silicon source precursor, an amine substance and a catalyst into the precursor solution to form an alumina sol through uniform stirring; adding a surfactant into the alumina sol to form an alumina sol containing a light shielding agent through uniform stirring; adding light shielding agent particles into the alumina sol to form the alumina sol containing the light shielding agent; immersing a ceramic fiber felt into the alumina sol containing the light shielding agent to perform gel aging, so as to obtain a fiber felt / gel composite; and performing drying and heat treatment on the fiber felt / gel composite, so as to obtain the alumina aerogel heat insulation felt. The alumina aerogel heat insulation felt prepared by the method has the advantages of high temperature resistance, excellent heat insulation performance and good flexibility.

The application provides a device and method for vacuum-assisted pultrusion of thermoplastic composite rods, and belongs to the field of civil engineering. The device solves the problem of bubbles generated by melt flow of thermoplastic resin, which reduces the forming quality of the thermoplastic composite rod. The device comprises a preheating module for preheating a thermoplastic prepreg tape, a heating module, a cooling module and a vacuum pumping device. The heating module comprises a first heating cavity, a vacuum cavity and a second heating cavity connected in sequence. The vacuum cavity is connected with the vacuum pumping device through a vacuum pumping port. The vacuum cavity adopts a gradient vacuum pumping design. Second heating components are arranged in the first heating cavity, the vacuum cavity and the second heating cavity. The cooling module is connected with the second heating cavity and used for cooling a thermoplastic composite rod product. Conical constraint components are arranged in the first heating cavity, the second heating cavity and the cooling module. The conical constraint components are used for narrowing the transmission path of the thermoplastic prepreg tape in the corresponding module. The device is mainly used for forming the thermoplastic composite rod.

The invention discloses a fabric impregnation device and an impregnation method thereof, and relates to the technical field of fabric production equipment.The fabric impregnation device comprises a supporting mechanism and a dip dyeing mechanism, a dip dyeing box is fixedly installed on a bottom plate, a swing mechanism and a drying box are arranged on two sets of bending rails on the two sides of the dip dyeing box respectively, and the dip dyeing mechanism is arranged below an air cylinder; the dip-dyeing disc is fixedly installed in the dip-dyeing box, the two vibrators are symmetrically installed on the dip-dyeing disc in a sliding mode, the two arc-shaped frames are longitudinally installed above the dip-dyeing disc, the I-shaped frame above the arc-shaped frames and the bending rail form a connecting rail, the air cylinder drives the fabric barrels on the I-shaped frame and the arc-shaped frames to move towards the dip-dyeing box, and the arc-shaped frames drive the two vibrators to move in the opposite directions. And the vibrator vibrates the dip dyeing liquid in the dip dyeing box to fully dip-dye the fabric on the fabric cylinder. Bubbles between fabrics can be eliminated, the whole roll of fabric is fully dip-dyed, and the fabric dip-dyeing quality and efficiency are improved.

The utility model discloses impregnation equipment for braid post-treatment, and aims to solve the problem that the existing braid impregnation effect is poor. According to the technical scheme, the steeping device is characterized by comprising a steeping box, a feeding port and a discharging port are formed in the steeping box, a guide roller set is arranged on the inner wall of the steeping box, an upper turbulent flow mechanism and a lower turbulent flow mechanism which are located above a braid are arranged on the inner wall of the steeping box, and the upper turbulent flow mechanism comprises two driving gears rotationally connected with the inner wall of the steeping box; a sector gear rotationally connected with the dipping box is arranged between the driving gears on the two sides, a first driving part used for driving the sector gear to rotate is installed on the outer wall of the dipping box, the sector gear is meshed with the driving gears on the two sides, and an installation block is fixedly connected to the axis of each driving gear. According to the utility model, the braid is flapped and knocked through the upper turbulent flow mechanism and the lower turbulent flow mechanism, and the impregnation liquid in the braid generates flow impact, so that the braid is more fully impregnated, and the treatment effect after impregnation is better.

The utility model discloses a uniform oiling device for polyester staple fiber production, which relates to the field of polyester staple fiber production and comprises a mounting base, two parallel mounting plates are fixedly mounted at the top of the mounting base, an oil drum frame is fixedly mounted on one side of the top of the mounting base, and two semi-cylindrical sleeves are symmetrically mounted in the middles of the two mounting plates up and down. Oil coating rollers are installed in the semi-cylindrical sleeves in a rolling mode, the two ends of the two installation plates are each provided with a short fiber limiting component, a driving component used for driving the two oil coating rollers to rotate is installed on the outer side of one installation plate, an oil storage tank is fixedly installed in the middle of the oil drum frame, and an oil supply component used for supplying oil to the semi-cylindrical sleeves is installed at the top of the oil drum frame. The lower semi-cylindrical sleeve is connected with a filtering part arranged at the bottom of the oil storage tank; according to the uniform oiling device for polyester staple fiber production, spinning oil can be recycled, and oiling is uniform.

The present invention provides a coil processing production line, wherein a base cloth or filter material arranged in a roll is rotatably installed on an unwinding device, and the base cloth or filter material is successively passed through the unwinding device, the impregnation and dehydration device, and the drying and curing device, and then wound on a winding roller arranged on the winding device; the winding roller rotates to move the base cloth or filter material in the production line. The base cloth or filter material is impregnated in the immersion tank body and then dehydrated by the dehydration device, and then enters the drying and curing device, the base cloth or filter material is dried in the heat insulation cavity at the upper part of the box body, and cured in the heat insulation cavity at the lower part of the box body, and the temperature of each layer of the heat insulation cavity is adjusted to control the drying and curing process of the base cloth or filter material, and the processed base cloth or filter material is wound on the winding device, the overall structure is compact and space-saving, and by adjusting the winding method of the base cloth or filter material in the impregnation tank and the conditions in each heat insulation cavity in the drying and curing treatment equipment, it can adapt to the deep processing of base cloths or filter materials of various specifications.

The utility model relates to the technical field of impregnation, and discloses a crop straw splitting impregnator which comprises a base and a connecting frame, an impregnation box is fixedly connected to the upper surface of the base, fixing frames are fixedly connected to the two sides of the upper surface of the base, and tensioning rollers are rotationally connected to the upper portion and the lower portion of the inner wall of the connecting frame. And L-shaped plates are fixedly connected to the two sides of the connecting frame. Two first motors are started to rotate forwards, a rotating shaft drives a rotating wheel to rotate, the rotating wheel winds a connecting rope, under the assistance of a connecting wheel, the connecting rope can pull a fixing rod, then an L-shaped plate slides upwards on a fixing frame, accordingly, the connecting frame can be driven to move upwards, the connecting frame drives a tensioning roller to move upwards, and the tensioning roller is driven to move upwards. And then a motor I is rotated reversely, so that a connecting rope can be loosened, and a connecting frame can drive a tensioning roller to move downwards, so that a material sheet can be repeatedly impregnated, and the material sheet is in full and uniform contact with impregnation liquid.

The invention discloses a preparation method of a heat-resistant and waterproof multilayer nano material. The preparation method specifically comprises the following steps: S1, preparing alumina fiber cotton; s3, slicing: slicing the alumina fiber cotton by adopting a high-pressure water cutter head to obtain flaky fiber cotton; s4, modification: performing atomization spraying on the flaky fiber cotton by using the oily modification liquid to obtain a fiber single-layer blank body; and S5, needling and roasting are conducted, specifically, the multiple layers of fiber single-layer blanks are sequentially stacked, needled and roasted, and the hydrophobic and ultra-high-temperature-resistant nano-porous silicon dioxide and aluminum oxide fiber multi-layer nano-material is obtained. A multi-layer stacked and compounded high-temperature-resistant and high-humidity-resistant hydrophobic protection layer is formed in the multi-layer nano-material, and the super-high-temperature-resistant and high-humidity-resistant hydrophobic protection layer is formed; and the use performance of the final alumina fiber product is effectively improved.