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Graffiti-proof thermoplastic engineering material panel and preparation and application thereof

An engineering material and thermoplastic technology, applied in anti-graffiti thermoplastic engineering material sheet and its preparation and application fields, can solve the problems of poor chemical corrosion resistance, low surface hardness, high cost, etc., and achieve good anti-graffiti performance and good weather resistance. Effect

Inactive Publication Date: 2018-06-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its low surface hardness and poor chemical corrosion resistance, it is usually sprayed on the surface in practical applications, or a fluoride film, such as polyvinyl fluoride or polyvinylidene fluoride, etc. Wait
Spraying treatment is not an environmentally friendly treatment method, and the cost of materials and labor is expensive; fluoride film has excellent performance, but at present, the cost is very expensive, the market supply is in short supply, and due to the low surface energy of fluoride materials, it usually requires additional adhesive to bond it to the substrate polycarbonate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] PVDF and PMMA are blended and granulated with a twin-screw extruder at a weight ratio of 80 / 20, and the obtained particles are fed into the single-screw sheet extruder, while PC particles are fed into the single-screw sheet extruder from another feeder. Out of the machine, the co-extrusion method of a melt distributor (AB structure) and a single-layer hanger-type die is used to obtain a two-layer structure plate. The thickness of the PC layer is 2mm, and the thickness of the PVDF / PMMA layer is 30um. Using the above-mentioned products, carry out the anti-graffiti test according to NF F 31-112, use water-based marker pens, oil-based marker pens, ballpoint pens, and acrylic spray paints of different colors to paint on the products, and then leave it for 24 hours before cleaning, repeat the above Cycle 3 times, according to the cleaning results, it can reach G1 level, and its yellowness change △E is 0.4. The mechanical properties of the above products are tested, and the im...

Embodiment 2

[0032] PVDF and PMMA are blended and granulated with a twin-screw extruder at a weight ratio of 90 / 10, and the obtained particles are fed into the single-screw sheet extruder, while PC particles are fed into the single-screw sheet extruder from another feeder. Out of the machine, a three-layer structure board is obtained by co-extruding with a multi-layer hanger-type die head. PVDF / PMMA is located on the upper and lower surfaces, the thickness of the PC layer is 2mm, and the thickness of the PVDF / PMMA layer is 30um. Using the above-mentioned products, carry out the anti-graffiti test according to NF F 31-112, use water-based marker pens, oil-based marker pens, ballpoint pens, and acrylic spray paints of different colors to paint on the products, and then leave it for 24 hours before cleaning, repeat the above Cycle 3 times, according to the cleaning results, it can reach G1 level, and its yellowness change △E is 0.2.

Embodiment 3

[0034] Using a three-layer hanger-type die, feed PVDF, PMMA and PC particles into the single-screw sheet extruder through different feeders, and co-extrude to obtain a three-layer structure sheet, PC / PMMA / PVDF, PVDF on the top On the surface, the thickness is 20 microns; PMMA is located in the middle layer, with a thickness of 10um; PC is located in the lower layer, with a thickness of 2mm. Using the above-mentioned products, carry out the anti-graffiti test according to ASTM D6578-08, use water-based marker pens, oil-based marker pens, ballpoint pens, and acrylic spray paints of different colors to paint on the products, repeat the above cycle 3 times, and then place it for 24 hours Cleaning was carried out, and the evaluation results were 10 points, 8 points, 9 points, and 6 points, respectively. The yellowness change ΔE was 0.2.

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Abstract

The invention relates to a graffiti-proof thermoplastic engineering material panel and preparation and application thereof, wherein the panel is formed by thermoplastic engineering material, polymethyl methacrylate (PMMA) and polyvinylidene fluoride (PVDF). The panel is prepared by adopting a co-extrusion manner of a single-layer clothes hanger type die head or a co-extrusion manner of a multi-layer clothes hanger type die head. The panel disclosed by the invention is applied to aviation interior decorating material, and has better weather resistance and graffiti-proof performance.

Description

technical field [0001] The invention belongs to the field of anti-graffiti material and its preparation and application, in particular to an anti-graffiti thermoplastic engineering material plate and its preparation and application. Background technique [0002] As an aviation interior material, such as the interior wall panels of the cabin, seats or small table boards, the first to meet the aviation flame retardant standards, typical regulations such as FAR25.853 and OSU65 / 65 of the United States Joint Aviation Administration. Secondly, in daily use, in addition to meeting the necessary mechanical properties, such as high tensile and flexural modulus, and impact resistance, it must also meet the requirements of easy cleaning, anti-graffiti and aesthetics. [0003] High-performance thermoplastic engineering plastics such as polycarbonate PC have been applied in various industrial fields, such as aerospace, rail transit, electronic appliances and security. Due to its excelle...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/30B32B27/36B32B33/00
CPCB32B27/08B32B27/304B32B27/36B32B27/365B32B33/00B32B2250/24B32B2307/3065B32B2307/552B32B2307/754
Inventor 王永荣孙亚峰王春敏
Owner DONGHUA UNIV
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