Method for monitoring the compliance of a predetermined desired concentration of a first component in an article consisting of a thermoplast, and first component of a thermoplast

A technology for thermoplastics, articles, applied in the field of checking whether a first component in articles made of thermoplastics is maintained at a predetermined nominal concentration, and the field of the first component of thermoplastics, which can solve the problem of low cost And other issues

Inactive Publication Date: 2014-08-27
GRAFE COLOR BATCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These known solutions are not suitable for reliable but cost-effective quality control possibilities for articles made of thermoplastics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Strontium carbonate was added to the masterbatch at a resulting concentration of 1.00% by mass, which is used for automotive parts to be colored with carbon black (Anthrazit). The proportion of the analyte strontium (Sr), corresponding to the proportion by mass of strontium in strontium carbonate, was 0.594% by mass in the masterbatch. Comparing the test panels provided with the marked masterbatch with the test panels not containing the analyte showed only small and negligible deviations in color. Strontium content versus masterbatch was obtained by measuring custom-made test panels with 3, 4, 6 and 8 mass % masterbatches in acrylonitrile-butadiene-styrene (ABS). An experimentally derived calibration function for metrology.

[0050] With the aid of the current calibration function, currently manufactured vehicle parts (articles) painted in carbon black are tested. By means of RFA, measurements were made directly on the article and the actual concentration of Sr was fo...

Embodiment 2

[0052] Articles in the form of automotive parts based on polypropylene materials contain SrCO 3 (Strontium Carbonate) masterbatch case is manufactured, and coupled with steel gray coloring. 3-4% by mass of masterbatch should be contained in PP material. A dose of 8.46% by mass of the masterbatch could be derived by means of RFA after a calibration function was developed based on several PP standards passed through the same SrCO 3 (Strontium carbonate) masterbatch is obtained by varying the dose in PP. A dosage of 8.40% by mass or 8.00% by mass was obtained by ashing in a muffle furnace and via thermogravimetric analysis. It was clearly found that the dosage of the masterbatch was too high for the manufacture of the automotive part.

Embodiment 3

[0054] In the masterbatch for the beige coloring of PA fibers (polyamide fibers), 1.00% by mass of the carrier substance PA was replaced in the masterbatch by 1.00% by mass of zirconium silicate as analyte. For the coloring of fibers using masterbatches, it is necessary to check the textile reliability by means of a pressure filtration test. A pressure filtration value of 0.35 bar / kg was determined for a masterbatch formulated with 1.00% by mass of zirconium silicate. In order to enable trouble-free textile operation, the goal is to develop color formulations with pressure filtration values ​​below 0.4 bar / g. For calibration, test panels with selected zirconium silicate contents are produced and measured. Measurements on a PA fiber material colored with this masterbatch, directly on the thread wound onto the bobbin, gave an actual concentration of zirconium silicate of 0.0224% by mass. Zirconium silicate at a nominal concentration of 0.02% by mass. The determined actual con...

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Abstract

The invention relates to a method for monitoring the compliance of a predetermined desired concentration of a first component in an article consisting of a thermoplast, which contains, in addition to the first component, at least one further component. After preparing a sample of the article, a quantitative analysis and determination of the actual concentrations of predetermined elements and / or predetermined compounds of the article are carried out, wherein the predetermined elements are selected from the elements strontium, zirconium, and tin and the predetermined compounds are selected from compounds of the elements strontium, zirconium and tin. The actual concentrations are compared with desired concentrations and a compliance of a predetermined desired concentration of a first component is monitored.; The invention further relates to a substance mixture for use as a first component and to the use of the substance mixture in the method according to the invention.

Description

technical field [0001] The invention relates to a method for checking whether a first component of an article made of thermoplastic remains at a predetermined target concentration. The invention also relates to a thermoplastic first component. Background technique [0002] In the thermoplastic material processing industry, so-called masterbatches, polymer compounds, pigment mixtures and additive mixtures are frequently used, which can be used, for example, in the form of pastes, powders, liquid dispersions, solutions or pellets. [0003] A masterbatch is a mixture of a carrier polymer or other plastic-like matrix with colorants and / or additives in a higher proportion than in the final application, e.g. Content in the finished item. A distinction is usually made between color masterbatches, additive masterbatches and combination masterbatches. [0004] Polymeric compounds contain additives, colorants and fillers or reinforcements already in the application concentration, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/44C06B23/00
CPCG01N33/442
Inventor 弗兰克·克劳森克莱门斯·格拉芬
Owner GRAFE COLOR BATCH
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