High-resolution tracking of industrial process materials using trace incorporation of luminescent markers
a technology of luminescent markers and industrial process materials, applied in the direction of material analysis, instruments, computer peripheral equipment, etc., can solve the problems of poor environmental protection, defective products and built structures, and the substitution of inferior materials,
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example 1
Quality and Logistics Control of Concrete and Cement Products
[0205]Luminescent marker 1 (15 grams) is dissolved in a dichloromethane solution containing 1500 grams of the polymer, polymethylmethacrylate (PMMA). This solution is spray dried using a commercial spray-dryer, giving the luminescent marker 1 encapsulated with fine polymer beads containing in 1% wt / wt ratio. A trace amount of the luminescent marker 1 (1.5 grams within 150 grams of the PMMA polymer) is suspended in 2 litres of water and added to a single batch of concrete (7 cubic metres) within a mixer truck 13. The mixer is then run at maximum revolutions for 4 minutes, as is standard in the ready-mix concrete industry. The mixer is then set to slow revolutions and the truck proceeds to the pour site where the concrete batch is again mixed at maximum revolutions for 2 minutes. Following pouring and hardening, the precise location of the concrete batch and its boundaries within other poured batches of concrete may be deter...
example 2
Process, Quality and Logistics Control of Timber and Timber Products
[0207]The timber product is to be marked with luminescent marker 4. Luminescent marker 4, is dissolved in a 0.003% wt / wt ratio in a commercial wood preservative solution consisting of white spirits and a powerful, soluble pesticide. The resulting mixture contains the preservative and trace amounts of luminescent marker 4.
[0208]A high-pressure cylinder for treating timber with preservative is charged with a timber piece (1 m×7 cm×7 cm). The cylinder is a non-commercial pilot plant used for testing purposes only. The cylinder is sealed and placed under a partial vacuum (85 KPa) for 15 minutes. The cylinder is then backfilled with the wood preservative solution containing the luminescent marker through an inlet valve. The preservative penetrates the timber carrying the luminescent marker with it. A positive pressure (700 KPa) is subsequently applied to the cylinder for 5 minutes to drive as much of the preservative sol...
example 3
Spray-Paints for Asset Management
[0210]An aerosol is charged with a propellant, a clear, air-drying lacquer or enamel, and luminescent markers 1 or 4, in 0.5% by weight (that is, 0.5 g per 100 grams of contents). The machine used to package the aerosol is the proprietary ColorPak 300 g aerosol paint filling system, which consists of a pneumatically operated aerosol filling machine, together with the proprietary prepacked mixture of solvents and propellants. The assets are sprayed with the aerosol and the lacquer / paint is allowed to dry. The identification of the wavelengths f11 and f14 are detected by playing the reader (which emits wavelength F1, as described in Example 1) over the surface of the assets.
[0211]Throughout this specification and the claims which follow, unless the context requires otherwise, the word “comprise” and variations such as “comprises” and “comprising” will be understood to imply the inclusion of a stated integer or step or group of integers but not the excl...
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