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Process and apparatus for quantifying solid residue on a substrate

A substrate and solid technology, applied in measurement devices, suspension and porous material analysis, instruments, etc., can solve problems such as inability to accurately simulate natural particle deposition processes

Pending Publication Date: 2021-11-09
THE CHEMOURS CO FC LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these application methods do not accurately mimic natural particle deposition processes

Method used

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  • Process and apparatus for quantifying solid residue on a substrate
  • Process and apparatus for quantifying solid residue on a substrate
  • Process and apparatus for quantifying solid residue on a substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Embodiment 1. Accelerated Testing of Commercial Paints

[0104] Using Preparation A, an additional replicate set of the seven paint film coated panels highlighted in Comparative Example 1 was prepared. Using the procedure described in Preparations B and C, the panels were then cut into thin slices, and two of the thin slices were evaluated simultaneously for accelerated dusting resistance for each paint type. During the evaluation period, a total of 6 continuously running carbon black (Flamrus 101 ) dusting channels were employed. The average delta gray value derived from each paint type flake pair is provided in Table 5.

[0105] table 5. The average Δ gray value of Example 1

[0106] 7 in 1 FutureColor Shield-1 NanoSemi-Gloss Shield-1 NanoSheen Super-shieldSemi-Gloss Super-shield Sheen Aquis Façade Novasil 26.6 7.2 1 4.6 0.8 3.4 3.9

[0107] For each non-zero outdoor exposure time at the Guangzhou test site highlighted in Table...

Embodiment 2

[0114] Embodiment 2. with different T g Accelerated Testing of Paints with Polymeric Binders of Value

[0115] Using emulsion polymerization techniques known to those skilled in the art, four unique polymer bonds were prepared using methyl methacrylate (MMA), methacrylic acid (MAA) and butyl acrylate (BA) monomers in varying amounts agent as an aqueous emulsion. The amount (in mmol) of each monomer used for each polymer binder synthesis is shown in Table 8. Also shown in Table 8 are the weight % solids of each prepared emulsion and the glass transition temperature (T g ). Emulsion wt % solids were determined gravimetrically by drying a sample of the emulsion in a standard vacuum oven at 110°C for 2 hours. The glass transition temperature of dry solid samples of the polymeric binder was measured using a TA Instruments Q100 Differential Scanning Calorimeter (TA Instruments, New Castle, DE) and associated software.

[0116] Table 8. Composition and characterization of poly...

Embodiment 3

[0126] Embodiment 3. Accelerated testing of paints with different pigment volume concentrations

[0127]Five paints with different pigment volume concentrations (PVC) were prepared according to the formulations provided in Table 11 using paint manufacturing techniques known to those skilled in the art.

[0128] Table 11. Composition of paints with different PVC values

[0129]

[0130] Two replicate sets of five paint film coated panels derived from the five resulting test paints were prepared using the procedure described in Preparation A. Using the procedure described in Preparations B and C, a set of panels was then cut into thin slices, and two of the thin slices were evaluated simultaneously for accelerated dusting resistance for each test paint. During the evaluation period, a total of 24 continuously running carbon black dusting channels were employed. The average delta gray values ​​derived from each paint flake pair are provided in Table 12.

[0131] The remai...

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Abstract

The present invention relates to a process and apparatus for quantifying solid residue on a sample. The process includes using a solid substrate and an aerosolizing device, adding a solid material to the aerosolizing device, forming a particle cloud of solid particles, wherein at least 1% of the mass concentration of solid particles have a mass median aerodynamic particle diameter up to about 10 [Mu]m, thus applying the solid particles to the solid substrate(s) to form treated substrate(s), maintaining at a temperature of from about 30 to about 120 ºC for at least a portion of the process, and removing a portion of solid particles from the treated substrate(s), and analyzing said at least one sample. The present invention further comprises an apparatus for applying solid particles to a substrate. The process can be used, for example, to analyze the dirt pickup resistance of a solid sample.

Description

technical field [0001] The solid material is atomized and applied to at least one substrate, which is then processed and analyzed for solid residues. Background technique [0002] Surfaces exposed to environmental conditions such as dirt, dust, rust, and contamination can accumulate solid residues over time that can be difficult or costly to clean or remove. This is especially true for exterior surfaces exposed to outdoor conditions, such as painted or sidewalled buildings. Testing surfaces exposed to these real-world conditions can take months or years to properly collect data, and because each location has different environmental conditions, testing can be resource-intensive. Although many methods have been developed to analyze the amount or impact of residues on such surfaces, it has been difficult to find accelerated methods that directly correlate with real-life exposure data. [0003] Particulate solids have been applied to substrates using a variety of methods. Sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/0606G01N2015/0046G01N33/0096
Inventor S·C·布朗D·C·克莱特P·杰纳科夫C·A·韦莱斯M·P·迪博尔德
Owner THE CHEMOURS CO FC LLC
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