Method for improving performance of organic-inorganic composite material

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

Active Publication Date: 2021-06-18
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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  • Method for improving performance of organic-inorganic composite material
  • Method for improving performance of organic-inorganic composite material
  • Method for improving performance of organic-inorganic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Using a permeable low-pressure plasma reactor (such as Figure 5 As shown), the top is a flat plate electrode, and the bottom is two sets of grid-shaped electrodes. The width of the grid-shaped electrodes is 8mm-10mm, and the spacing is 1mm-2mm. The distance between the upper and lower electrodes is 2cm, and the electrodes are covered with an insulating medium with a thickness of 0.1-0.2mm. Vacuumize the chamber to a background pressure of 5Pa, turn on the flowmeter and start to feed Ar / O into the discharge chamber 2 Mixed gas, Ar / O 2 Volume ratio 1: (0.1~0.2), the total flow rate is 100-300sccm, after the pressure in the discharge chamber is stabilized at 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 ...

Embodiment 2

[0042] 1. Untreated and plasma-treated full-dull polyester PET / TiO in embodiment 1 2 , after dipping and coating 30% by weight perfluoromethacrylate waterproof finishing agent at room temperature for 10 minutes, and drying at 160° C. for 90 seconds. Then carry out the fabric water-repellent and oil-repellent performance test.

[0043] 2. According to the AATCC20 fabric spray hydrophobicity test standard method, prepare 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 Variations in test results such as figure 2 shown.

[0044] 3. Full-dull polyester PET / TiO coated without plasma treatment 2 (sample F), the static contact angle to water is 160°, 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. Full...

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 plate electrode, and the lower part is two sets of grid-shaped electrodes. The electrodes with a distance of 2 mm to 3 mm are covered with an insulating medium with a thickness of 0.4 to 0.5 mm. Vacuumize the chamber to a background pressure of 5Pa, turn on the flowmeter and start to feed Ar / O into the discharge chamber 2 Mixed gas, Ar / O 2 Volume ratio 1: (0.3~0.5), the total flow rate is 130-150sccm, after the pressure in the discharge chamber is stabilized at 50-80Pa, apply plasma with a frequency of 2-5MHz and a power of 100-300W to the upper parallel plate electrode and the lower surface On a set of grid electrodes, pure PET polyester fabric and semi-dull polyester PET / TiO 2The fabrics were processed through the plasma discharge area in a roll-to-roll manner, and the etching time was 4 min.

[0048] The permeable plasma treatment i...

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Abstract

The invention relates to a method for improving the performance of an organic-inorganic composite material. By using the method, an organic polymer covering surfaces of micro-nano particles in the composite material is selectively etched and removed, so that inorganic micro-nano particles loaded on the surfaces are partially exposed out of the surfaces of the polymer and fibers, and the surface roughness is deepened, so that the functionality of the inorganic micro-nano particles can be really exerted. Meanwhile, due to the improvement of plasma permeability, the interior of the fiber fabric can be fully treated and etched, the exposure proportion of the micro-nano particles is increased, and the performance of the composite material is further improved. The high specific surface area of the fiber fabric and the inorganic micro-nano particles fully exposed inside and outside can fully endow the composite material with greatly improved functional characteristics. According to the inorganic-organic composite material and product prepared based on large-scale industrial blending, the blending preparation and plasma etching process is environmentally friendly and efficient, and the technological process is mature and easy to implement.

Description

technical field [0001] The invention belongs to the field of preparation of composite materials, in particular to a method for improving the performance of organic-inorganic composite materials. Background technique [0002] Inorganic micro-nanoparticles 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 etc. have special functional properties such as catalysis, chemistry, light, force, heat, sound, electricity, and magnetism. Micro-nano particles have small unit size, large specific surface area, and high surface activity. Blending it with other dielectric materials, a small amount Addition will have a significant impact on the performance of the load medium material. [0003] Polyethylene terephthalate PET, polymethyl methacrylate PMMA, polypropylene PP, polyethylene PE, polytetrafluoroethylene PVDF, polyimide PI, polyurethane PU, regenerated cellulose, polystyrene PS Polymer or polymer fiber aggregates and fabric ...

Claims

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Application Information

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Patent Type & Authority Applications(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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