A method for preparing ni/p/nanometer sio2 ternary composite coating on the surface of pbo fiber

A ternary composite, fiber surface technology, applied in coating, liquid chemical plating, metal material coating process, etc., can solve the problems of molecular chain breakage, damage to mechanical properties, and impact on the durable use of materials

Active Publication Date: 2016-05-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are dangerous factors such as ultraviolet radiation, atomic oxygen, electrons, protons, micrometeorites, and space debris in the space environment. Oxidative aging causes the breakage of molecular chains, which damages its mechanical properties and affects the durable use of materials

Method used

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  • A method for preparing ni/p/nanometer sio2 ternary composite coating on the surface of pbo fiber
  • A method for preparing ni/p/nanometer sio2 ternary composite coating on the surface of pbo fiber
  • A method for preparing ni/p/nanometer sio2 ternary composite coating on the surface of pbo fiber

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specific Embodiment approach 1

[0018] Specific embodiment 1: In this embodiment, a kind of Ni / P / nanometer SiO is prepared on the surface of PBO fiber 2 The method of ternary composite coating is carried out according to the following steps:

[0019] 1. Preparation of nano-SiO 2 Sol: Use a pipette to weigh 0.1mL-3mL deionized water and 2mL-9mL ammonia water and mix with 80mL-110mL absolute ethanol to obtain the mixed solution a. Turn on the constant temperature magnetic stirrer to stir and heat the mixed solution a at a speed of Stir at 200r / min~700r / min and temperature at 15℃~35℃, then quickly add 2mL~8mL orthosilicate ethyl ester dropwise, continue at temperature 15℃~35℃ and rotating speed at 200r / min~700r Stir continuously for 3h-7h under the condition of 1 / min to obtain SiO with a particle size of 50nm-200nm 2 Sol;

[0020] 2. PBO fiber coarsening treatment: Wrap the PBO fiber bundles on the U-shaped glass frame, and then vertically immerse the opening of the U-shaped glass frame wrapped with fibers i...

specific Embodiment approach 2

[0027] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the constant temperature magnetic stirrer is turned on to stir and heat so that the mixed liquid a has a rotating speed of 400r / min to 600r / min and a temperature of 20°C to 30°C. Stir under the condition of ℃, then quickly add 4mL~6mL orthosilicate ethyl ester dropwise, and continue to stir for 4h~6h at the temperature of 20℃~30℃ and the speed of 400r / min~600r / min to obtain the particle size 50nm ~ 200nm SiO 2 Sol. Others are the same as the first embodiment.

specific Embodiment approach 3

[0028] Specific embodiment three: the difference between this embodiment and one of specific embodiments one or two is: in step 2, use a magnetic stirrer to stir for 2h to 3h at room temperature and at a stirring speed of 200r / min to 250r / min, Take out the U-shaped glass frame wrapped with fibers, wash it with deionized water for 3 to 6 times, and finally dry it at a temperature of 100°C-120°C for 30min-40min to obtain a U-shaped glass wrapped with coarsened PBO fibers frame. Others are the same as those in the first or second embodiment.

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Abstract

The invention relates to a method for preparing a coating on a PBO fiber surface, in particular to a method for preparing a Ni / P / nano-SiO2 ternary composite coating on the PBO fiber surface. The method aims to solve the technical problems that in the prior art, a PBO fiber as a light-sensitive high polymer material will be subjected to photooxidation and aging due to ultraviolet irradiation in the using process, so that a molecular chain is broken, the mechanical properties of the PBO fiber are damaged, and the durability of the material is affected. The method comprises the steps that firstly, nano-SiO2 sol is prepared; secondly, the PBO fiber is roughened; thirdly, the PBO fiber is sensitized; fourthly, the PBO fiber is activated; fifthly, the PBO fiber is reduced; sixthly, Ni / P / nano-SiO2 composite plating is conducted on the surface of the PBO fiber. The method is mainly used for preparing the coating on the PBO fiber surface.

Description

technical field [0001] The invention relates to a method for preparing a coating on the surface of a PBO fiber. Background technique [0002] The U.S. space elevator research company "Elevator Harbor" once imagined to create a "space elevator", and one day humans will hopefully take this super elevator to space in the future. A space elevator is a long rope with one end anchored to Earth and the other anchored to a counterweight in geosynchronous orbit, such as a large satellite. Under the interaction of gravity and centripetal acceleration, the cable is in a taut state, and the space elevator will use solar or laser energy to move up and down the cable. Selecting a suitable fiber material to be used as a space rope is the key to the whole plan. [0003] PBO (poly-p-phenylene benzobisoxazole) molecule is a fully aromatic heterocyclic polymer, the repeating main chain unit is composed of rigid benzene ring and oxazole ring, with high relative molecular mass and lyotropic li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/50C23C18/24C23C18/28C23C18/30C23C18/20
Inventor 黄玉东陈磊刘丽程玮璐胡桢吴子剑王芳
Owner HARBIN INST OF TECH
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