A method for improving the performance of organic-inorganic composite materials

An inorganic composite material and composite material technology, applied in the field of composite material preparation, can solve problems such as insufficient exposure of inorganic nanoparticles, and achieve the effects of simple and environmentally friendly preparation process, improved function, and increased area

Active Publication Date: 2022-06-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the problems of insufficient internal treatment of fiber aggregates and exposure to inorganic nanoparticles in the existing technology, and removes complicated processes. The method is simple, environmentally friendly, effective, and widely applicable.

Method used

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  • A method for improving the performance of organic-inorganic composite materials
  • A method for improving the performance of organic-inorganic composite materials
  • A method for improving the performance of organic-inorganic composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Use a permeable low-pressure plasma reactor (such as Figure 5 shown), the top is a flat electrode, and the bottom is two sets of grid electrodes, the grid electrodes have a width of 8mm-10mm, and a spacing of 1mm-2mm. The distance between the upper and lower electrodes is 2 cm, and the electrodes are covered with an insulating medium with a thickness of 0.1 to 0.2 mm. The cavity is evacuated to a background pressure of 5Pa, and the flowmeter is turned on to begin to flow Ar / O into the discharge cavity. 2 Mixed gas, Ar / O 2 The volume ratio is 1: (0.1~0.2), the total flow is 100-300sccm, and after the pressure in the discharge chamber is stabilized to 30-100Pa, set the parameters of the plasma discharge: between the upper plate electrode and the lower group of grid electrodes Apply 10MHz ~ 13.56MHz radio frequency source, power 300-400W. The discharge is regulated by a pulse switch, the frequency of the pulse switch is 80-100kHz, the width is 80us-100us, and the du...

Embodiment 2

[0042] 1. The untreated and plasma treated fully matte polyester PET / TiO in Example 1 2 , after dipping and coating with 30% by weight of perfluoromethacrylate waterproof finishing agent at room temperature for 10min, and drying at 160°C for 90s. Then the fabric water and oil repellency performance test was carried out.

[0043] 2. According to the AATCC20 fabric spray hydrophobicity test standard method, configure standard soap solution for 10 consecutive cycles of washing at room temperature, and test the static contact angle and spray characteristics after 1, 5, and 10 cycles. The static water contact angle varies with the number of washings. Changed test results such as figure 2 shown.

[0044] 3. Fully matte polyester PET / TiO coated without plasma treatment 2 (sample F), the static contact angle to water is 160°, and the spray level is 90°. After 10 cycles of washing, the static contact angle of water drops to 40°, and the water spray level is 0°.

[0045] 4. Fully m...

Embodiment 3

[0047] 1. The selective plasma etching treatment is specifically as follows: a low-pressure plasma reactor is used, the upper part is a flat electrode, the lower part is two sets of grid electrodes, the distance between the upper and lower electrodes is 1cm, and the width of the lower grid electrode is 6mm to 7mm. The electrodes with a spacing of 2 mm to 3 mm are covered with insulating medium with a thickness of 0.4 to 0.5 mm. The cavity is evacuated to a background pressure of 5Pa, and the flowmeter is turned on to begin to flow Ar / O into the discharge cavity. 2 Mixed gas, Ar / O 2 The volume ratio is 1:(0.3~0.5), the total flow is 130-150sccm, and after the pressure in the discharge chamber is stabilized at 50-80Pa, the plasma with a frequency of 2-5MHz and a power of 100-300W is applied to the upper parallel plate electrode and the lower On a set of grid electrodes, pure PET polyester fabric and semi-matte polyester PET / TiO 2The fabrics were processed through the plasma di...

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Abstract

The invention relates to a method for improving the performance of an organic-inorganic composite material. The organic polymer covered by the surface of the micro-nano particle in the composite material is selectively etched and removed, so that the inorganic micro-nano particle loaded on the surface is partially exposed to the surface of the polymer and the fiber. , and deepen the surface roughness, so that the functionality of inorganic micro-nano particles can truly be brought into play. At the same time, due to the improvement of plasma permeability, the inside of the fiber fabric can also be fully processed and etched, which increases the exposure ratio of micro-nano particles and further improves the performance of the composite material. The high specific surface area of ​​the fiber fabric and the fully exposed inorganic micro-nano particles inside and outside can fully endow the composite material with greatly improved functional properties. The invention is based on inorganic-organic composite materials and products prepared by large-scale industrial blending. The blending preparation and plasma etching processes are environmentally friendly and efficient, and the process is mature and easy to implement.

Description

technical field [0001] The invention belongs to the field of preparation of composite materials, and particularly relates to a method for improving the performance of organic-inorganic composite materials. Background technique [0002] Inorganic micro-nano particles such as TiO 2 , Si, SiO 2 , MnO 2 , ZnO, Al 2 O 3 , CaCO 3 , Fe 2 O 3 , Fe 3 O 4 ,BaSO 4 ,WO 3 It has various special functional properties such as catalysis, chemistry, light, force, heat, sound, electricity, magnetism, etc. The micro-nano particles have small unit size, large specific surface area and high surface activity. It is blended with other medium materials. Additions can have a significant effect on the properties of the load media material. [0003] Polyethylene terephthalate PET, polymethyl methacrylate PMMA, polypropylene PP, polyethylene PE, polytetrafluoroethylene PVDF, polyimide PI, polyurethane PU, regenerated cellulose, polystyrene PS It has been widely used in information industry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M10/02C08J7/12C08L27/18C08K3/36D06M101/32D01F6/92D01F1/10
CPCD06M10/025C08J7/123D06M2101/32C08J2327/18C08K3/36D01F6/92D01F1/10
Inventor 张菁尚晓冉田立轩徐雨王超梁张宇王天舒杨宝敬
Owner DONGHUA UNIV
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