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Abrasion-resistant materials

A wear-resistant material and thermoplastic technology, applied in the field of wear-resistant materials, can solve the problems of lack of wear resistance of resin, exposed base surface, non-uniform wear, etc., to achieve the effect of increasing the overall price, maintaining production technology, and simplifying maintenance

Inactive Publication Date: 2016-06-08
VYSOKE UCENI TECHNICKE V BRNE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Resins used in various engineering and architectural applications also lack wear resistance, leaving the surface of the foundation exposed, resulting in non-uniform wear and potentially localized corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A reaction mixture was prepared by dissolving the following initiators in the urethane-acrylate monomer while stirring at room temperature for 30 minutes: 0.3 wt% camphorquinone and 0.2 wt% DMAEMA. Perform this process in the dark to prevent premature polymerization.

[0022] Unmodified fumed silica nanoparticles (Aerosil200) or fumed silica nanoparticles surface-modified by methacryloylsilane (AerosilR711) were subsequently vacuum-dried at 120 °C for 1 h, and then added to In the mixture, disperse using one of the following steps:

[0023] 1) The nanoparticles were stirred into the mixture at laboratory temperature for 3 hours.

[0024] 2) The nanoparticles were stirred into the mixture at laboratory temperature for 3 hours, followed by exposure to an ultrasonic bath (K5, Kraintek) at 30°C.

[0025] The mixture is then poured into rubber molds and cured using UV radiation.

[0026] Table 1 shows the physicochemical data of Aerosil200 and AerosilR711.

[0027] Table...

Embodiment 2

[0040] Silica nanoparticles (silica-unmodified surface Sigma-Aldrich-specific surface area 390m 2 / g, particle size 7nm; silica coated with Cab-O-SilTS-530 - surface area 220m2 / g) of PMMA (PlexiglasFormmaseTransparent8N) or PC (Makrolon) based polymer nanocomposites:

[0041] 1) Dry the thermoplastic particles at 90°C.

[0042] 2) The particles were then dissolved in various organic solvents (acetone, toluene, acetone / toluene 1:1, dichloromethane, methyl ethyl ketone).

[0043] 3) The nanoparticles were vacuum dried at 120° C. for 24 hours.

[0044] 4) The nanoparticles were then dispersed by ultrasound and then stirred into the same solvent at 50 °C for 1 hour.

[0045] 5) The mixture of nanoparticles and solvent was added to the dissolved particles, followed by stirring for 3 hours.

[0046] 6) Using a mechanical stirrer to remove the organic solvent by gradient drying under stirring. The dried thermoplastic nanocomposites were then pulverized (dried at 140°C for 2 hour...

Embodiment 3

[0052] Silica nanoparticles (silica-unmodified surface Sigma-Aldrich-specific surface area 390m 2 / g, particle size 7nm; silica coated with Cab-O-SilTS-530 - surface area 220m 2 / g) of PC (Makrolon) based polymer nanocomposites:

[0053] 1) Dry the thermoplastic particles at 90°C.

[0054] 2) The particles were then dissolved in various organic solvents (acetone, toluene, acetone / toluene 1:1, dichloromethane, methyl ethyl ketone).

[0055] 3) The nanoparticles were vacuum dried at 120° C. for 24 hours.

[0056] 4) The nanoparticles were then dispersed by ultrasound and then stirred into the same solvent at 50 °C for 1 hour.

[0057] 5) The mixture of nanoparticles and solvent was added to the dissolved particles, followed by stirring for 3 hours.

[0058] 6) Using a mechanical stirrer to remove the organic solvent by gradient drying under stirring. The dried thermoplastic nanocomposites were then pulverized (dried at 140°C for 2 hours, ground, dried at 145°C for 3 hours, ...

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Abstract

The invention provides an abrasion resistant material which comprises a polymeric matrix composite, preferably selected from the group comprising amorphous thermoplastics and resins, containing homogenously dispersed nanoparticles ranging in size from 1 to 50 nm, further combined with clusters of the said nanoparticles, or a combination of nanoparticles of different sizes within the above stated range. Furthermore, the invention provides a method of preparation of this material and automotive parts containing these materials.

Description

technical field [0001] The present invention relates to materials suitable for exterior and interior automotive parts, especially thermoplastic nanostructured materials, or nanocomposite resins, which have enhanced wear resistance (resistance against abrasion or scratching). Furthermore, the present invention relates to methods for preparing said materials. Background technique [0002] Plastics used in the automotive industry for self-supporting exterior and interior parts in luxury vehicles mainly include high-gloss black polymethylmethacrylate (PMMA) and polycarbonate (PC). During washing or upon contact with abrasive objects such as keys or fingernails, the surface can become scratched, reducing gloss and negatively affecting the overall appearance or interior of the car. The long-lasting wear resistance of such plastic parts, while maintaining weight, aesthetic appearance, and processing techniques, is a demand for automotive manufacturers. [0003] Polymer nanocompos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/36
CPCC08K3/36C08K2201/011C08K9/06C08K2201/005C08L33/12C08L75/16C08L69/00C08L33/14
Inventor 约瑟夫·亚恩卡尔拉德卡·巴尔科瓦彼得·波拉塞克弗兰蒂泽克·库塞拉
Owner VYSOKE UCENI TECHNICKE V BRNE
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