35results about How to "With tensile strength" patented technology

The invention discloses an anti-ultraviolet PBT compound, its preparation method and application. The PBT compound includes the following components: PBT, glass fiber, lignin, toughening agent, and antioxidant; wherein the average diameter of the glass fiber is less than or equal to 13 μm, and the pH of the lignin is 7.0-8.0. The invention uses safe, efficient and environment-friendly lignin as the ultraviolet absorber of PBT, which replaces the chemical anti-ultraviolet agent commonly used in the market, and the prepared PBT compound containing lignin has good anti-ultraviolet performance. At the same time, the low-diameter glass fiber, toughening agent, etc. cooperate with PBT and lignin to reduce the problem of the decline in the mechanical properties of PBT caused by the addition of lignin. Thus, a PBT composite with both mechanical properties and anti-ultraviolet properties is prepared, the initial tensile strength of the PBT composite is ≥ 100 MPa, and the tensile strength retention rate of the material is ≥ 90% after ultraviolet aging.

The invention relates to the field of sanitary products, and provides a preparation method of disposable pants-type sanitary products, which solves the problems of relatively complicated preparation process and high cost of the prior art trouser-type sanitary products, and also solves the problem of adopting the preparation method of the prior art The outer clothing layer of the obtained trouser-type hygiene product has poor softness, uneven distribution of elasticity, and problems of tight feeling when used, including preparing the outer clothing layer, preparing an absorber, fixing the absorber on the outer clothing layer and welding it into a The pants-shaped structure is cut into individual products, and the preparation of the outer clothing layer includes the following steps: a, preparing elastic non-woven fabrics; b, sending the elastic non-woven fabrics prepared in step a into an activation system for activation treatment; c. Slitting the elastic non-woven fabric obtained in step b along the longitudinal direction and combining with the spunbonded nonwoven fabric through hot melt adhesive or ultrasonic wave, and each elastic nonwoven fabric after slitting is respectively located on the spunbonded nonwoven fabric. Both longitudinal sides of the cloth are spun and an outer garment layer is thereby produced.

The invention relates to an optical cable connector, and provides an underwater optical cable connector, which is capable of meeting requirements on water tightness and tensile performance, and providing detachable and movable connection. The underwater optical cable connector is characterized in that mutually matched cone structures are arranged on a plug shell and a socket shell respectively sothat the plug shell and the socket shell can be in gapless sealing connection by means of insertion, a sealing connection structure is arranged between a plug and an optical cable, the space between the plug shell and a tensile taper sleeve is sealed by an 'O'-shaped sealing ring, and a sealing tail sleeve for sealing is formed in the space between the optical cable and a tail part of the whole plug by mean of integral die casting. The movable sealing connection structure is arranged between the plug and a socket of the underwater optical cable connector, the two shells are connected by cones, no gap is reserved between the inner cone and the outer cone, the space between the cones is sealed by the 'O'-shaped sealing ring, the inner cone and the outer cone are locked by a connecting nut, and the underwater optical cable connector is simple in structure, reliable in performance, extremely high in water pressure resistance and convenient in connection and detachment.

The invention discloses a method for weaving polyvinyl alcohol fiber lining cloth capable of dissolving in water at normal temperature, comprising the following steps: (1) preparing polyvinyl alcohol fiber cotton; (2) loosely stirring the polyvinyl alcohol fiber cotton and splitting the polyvinyl alcohol fiber cotton into loose fine carded polyvinyl alcohol fiber cotton, evenly scattering and distributing the loose fine carded polyvinyl alcohol fiber cotton on a meshy conveying belt, and conveying the loose fine carded polyvinyl alcohol fiber cotton into a cotton spreading machine; (3) uniformizing and leveling the cover of cloth by the clamping and the rolling of the cotton yarn of cloth layer by two groups of axial rollers and the stretching of the cotton yarn of cloth layer by spiral sawtooth points, wherein sawteeth are distributed on the surfaces of the two groups of axial rollers which are arranged up and down; (4) hot rolling, strengthening and shaping cotton cloth by hot rolling wheels, wherein convex points are distributed on the surfaces of the hot rolling wheels; (5) making the rolled cotton cloth pass by the surface of a cooling cylinder wheel in which circulating ice water is filled so that the cotton cloth being rapidly cooled to the normal temperature; and (6) bundling the cotton cloth into a bundle. When being used for base cloth embroidered by a machine, the polyvinyl alcohol fiber lining cloth woven by the method can dissolve in water at lower normal temperature, and the embroidered threads can not fade when the polyvinyl alcohol fiber lining cloth dissolves in water at high temperature.

The invention relates to an MAX phase ceramic-metal lamellar composite material, a preparation method and a purpose. The MAX phase ceramic-metal lamellar composite material comprises n layers of superposition units, wherein each superposition unit comprises a metal foil layer and an MAX phase ceramic layer attached to the metal foil layer and n is equal to or greater than 2. Ti2AlC powder and metal foil are used as raw materials for the MAX phase ceramic-metal lamellar composite material; a preform is prepared by superposing the metal foil coated with MAX phase ceramic particles; and next, the preform is subjected to pressurization heat treatment, so that the MAX phase ceramic-metal lamellar composite material is obtained. The MAX phase ceramic-metal lamellar composite material is used inthe field of carrying tools, the field of power transmission and transformation or the field of military materials.