4results about How to "Modulus improvement" patented technology

This utility model discloses a wear-resistant carbon fiber composite core cable, relating to the field of cable technology. It includes a cable body and a core, with the core located at the center of the cable body. The core consists of multiple carbon fiber bundles and filler material between the carbon fiber bundles. An inner insulation layer is tightly wrapped around the core, and an outer insulation layer is fitted over the inner insulation layer. A protective layer is then provided on the outside, consisting of a buffer layer, a wear-resistant fiber layer, and a wear-resistant rubber layer, sequentially fitted from the inside out. This utility model significantly improves the wear resistance of the cable, extends its service life, reduces operating costs, and lightens its weight, facilitating installation and laying, by optimizing the cable's structure and materials.

The invention relates to a method for preparing cellulose films with different orientations and an application method, and belongs to the technical field of biomass-based high polymer materials. The technical problems that in the prior art, the locking effect of a cellulose strong hydrogen bond network is difficult to overcome, and high orientation degree and high crystallinity cannot be synchronously achieved under the mild condition are solved. The preparation method comprises the following steps: firstly, providing at least one raw material of micron-scale, nano-scale or regenerated cellulose to prepare a precursor, gelatinizing to form stretchable gel, performing stretching orientation according to the size of the raw material by adopting a differential proportion, and finally, putting the gel in an environment with the temperature of 40-90 DEG C and the relative humidity of 30-90% in a stretching state to perform mechanical-thermal-thermal coupling curing, thereby obtaining the cellulose / cellulose composite material. The cellulose molecular chain is promoted to be rearranged and crystallized along the orientation direction by utilizing humidity plasticizing and heat energy driving. The prepared film has high orientation degree and high crystallinity, and is suitable for the fields of high-end packaging materials, flexible electronic device substrates, biomedical materials and the like.

The invention relates to the technical field of mesophase pitch-based carbon fiber preparation, and discloses a radial folding structure mesophase pitch-based carbon fiber as well as a preparation method and application thereof. The preparation method comprises the following steps: selecting mesophase pitch as a raw material, and preparing mesophase pitch protofilaments through melt spinning; the mesophase pitch precursor is sequentially subjected to pre-oxidation treatment, carbonization treatment, graphitization treatment, surface treatment and sizing, and the radial folding structure mesophase pitch-based carbon fiber is obtained. In the melt spinning process, the length-diameter ratio L1 / D1 of a spinneret orifice is (2-3): 1, the divergence angle theta at the outlet of the spinneret orifice is 20-45 degrees, and a two-section air blowing cooling mode is adopted at the outlet of the spinneret orifice. The section of the mesophase pitch-based carbon fiber prepared by the method is integrally arranged in a radial shape, and the graphite sheet layers are mutually folded to form an interlocking structure, so that the defect that the traditional radiation structure fiber is easy to split along the radial direction in the heat treatment process is effectively inhibited, and the tensile strength of the fiber is remarkably improved.

This utility model relates to the field of automotive spoiler technology, and more particularly to a lightweight, high-strength automotive spoiler, comprising a spoiler main structure. Positioning blocks are fixedly connected to the lower left and right ends of the spoiler main structure. Positioning screws are inserted into the upper ends of both positioning blocks. Protective covers are fitted onto the outer surfaces of both positioning blocks. Connecting structures are fixedly connected to both ends of the spoiler main structure. Spoiler blades are fixedly connected to the opposite ends of the two connecting structures. A wear-resistant layer is applied to the outer surfaces of the spoiler main structure and the two connecting structures. The connecting structure includes a first support plate, with an insert block and two insert rods fixedly connected to the left end of the first support plate. The insert block is located between the two insert rods. This lightweight, high-strength automotive spoiler, through its main structure and connecting structures, facilitates the connection and adjustment of the automotive spoiler.