5 results about "Fibre dispersion" patented technology

The application provides a silk fibroin nanofiber composite film and a preparation method and application thereof. The preparation method comprises the following steps: preparing a self-supporting film with an ordered and continuous fiber network framework from a silk fibroin nanofiber dispersion liquid, wherein the fiber network framework serves as a reinforcing phase; contacting the self-supporting film with a solution containing a matrix phase and / or a functional phase, so that the matrix phase and / or the functional phase is filled into the fiber network framework of the self-supporting film to obtain a composite precursor film; and extruding the composite precursor film, or extruding and cross-linking the composite precursor film to obtain the silk fibroin nanofiber composite film. The method of the application adopts a time sequence separation strategy of 'first making a framework and then filling', and the self-assembly ordered structure of the silk fibroin nanofiber is completely reserved. The reinforcing phase, the matrix phase and the functional phase in the obtained composite film synergistically act, and the composite film has high mechanical strength, low swelling rate and functional integrability, and can be applied to the fields of implantable medical devices or biosensors.

The method for manufacturing a fiber mat includes a step of dispersing fine fibers having thermoplasticity in a dispersion medium, and a step of matting the dispersed fine fibers on a support. The step of matting includes a step of forming a fiber mat (30) by picking up the fine fibers on the support, and a step of irradiating light to a first main surface (31) of the fiber mat (30) on the side opposite to the side on which the support is present. In the step of irradiating light to the first main surface (31) of the fiber mat (30), the fine fibers on the first main surface (31) side are fused.

This utility model discloses a crack-resistant mortar fiber dispersion uniformity tester, comprising a tester body and a metal sample plate containing test specimens. The tester body is equipped with a positioning mechanism and a bending mechanism. The fixing mechanism includes a placement groove and a positioning structure, the positioning structure including a positioning roller one and a positioning roller two. The bending mechanism includes an arc-shaped bending component. The tester body also includes an adjustment mechanism, comprising a turntable and a drive motor. The tester body is equipped with a central control terminal. This utility model, by setting multiple sets of arc-shaped bending components with different curvatures on the turntable, allows for rapid switching by controlling the turntable rotation via the drive motor, meeting diverse testing needs. It can test crack-resistant mortars of different specifications and application scenarios, expanding the tester's applicability and solving the problem of limited testing scenarios in traditional testing methods. It is particularly suitable for scenarios requiring frequent switching of testing conditions or large-scale batch testing.

The application discloses a high-strength composite fiber plugging system which is composed of flexible fiber, rigid fiber, suspended viscosity increasing agent, fiber dispersing agent and water. The application also discloses a preparation method of the high-strength composite fiber plugging system, and the steps are as follows: (1) adding formula amount of water into a container, then adding formula amount of flexible fiber, formula amount of rigid fiber and formula amount of fiber dispersing agent into the container in sequence, and mixing uniformly to obtain a mixed solution; (2) stirring the mixed solution obtained in the step (1) at a certain stirring speed, slowly adding formula amount of suspended viscosity increasing agent into the container while stirring, and then stirring uniformly. The application has the advantages of uniform dispersion time less than 120 minutes, viscosity less than 350 mPa·s, suspension stability time more than 1 day, plugging pressure gradient more than 10 MPa / m, plugging rate more than 95%, and thermal stability time of the system at 130 DEG C more than 6 months.