3results about How to "Fully impregnated" patented technology

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 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.