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A kind of standard substance of lead-containing paint coating and preparation method thereof

A standard substance and paint coating technology, applied in the field of lead-containing standard substances, can solve problems such as large interference and affect the accuracy of chemical testing of toys, and achieve the effects of high compatibility, fast speed and good uniformity

Active Publication Date: 2018-09-25
东莞市信测科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the lead-containing coating standard material in the world is seriously inconsistent with the standard material matrix tested by the majority of toy chemical laboratories in my country. The current ICP-OES test has relatively large interference, which affects the accuracy of toy chemical testing.

Method used

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  • A kind of standard substance of lead-containing paint coating and preparation method thereof
  • A kind of standard substance of lead-containing paint coating and preparation method thereof
  • A kind of standard substance of lead-containing paint coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] To make a dry coating reference material with a lead content of 200mg / kg:

[0032] First, take a small amount (about 5-10 grams) of pure yellow wet paint standard substance, apply it on a tempered glass sheet, weigh the mass before drying, then dry it in an oven for about 3 hours, weigh the mass after drying, and calculate the mass of the paint The solids content was 50%.

[0033] Weigh 4.0kg of wet paint after peeling (according to the calculation, the final solid content of simple paint is 2.0kg) and put it into the disperser, then add 1.06g of analytically pure lead naphthenate, and add a volume ratio of 1:1. Oil and water, start the disperser, stir at 120 rpm for 2-4 hours to get a wet paint mixture, this process is to make the lead naphthenate evenly diffuse into the paint. Then the obtained paint mixture is taken out from the disperser, and the paint mixture is sprayed on the tempered glass plate with a spray gun; the tempered glass plate is placed in a drying ov...

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Abstract

The invention discloses a lead-containing paint coating standard substance which is prepared by adding a substance, analytically-pure lead naphthenate, which is used for introducing lead element, to acrylic resin paint and mixing the components. The invention also discloses a method of preparing the lead-containing paint coating standard substance. In the invention, the lead element compound, lead naphthenate, which is high in compatibility with a paint base material, is introduced according to simulation of a paint production process. For test, the material in the invention is similar to a coating material on toys in China, so that a less base material influence is achieved. The standard substance is good in uniformity, is high in accuracy and stability, allows large-scale production and is quick in production.

Description

technical field [0001] The invention relates to a lead-containing standard substance, in particular to a lead-containing paint coating standard substance for testing lead content and a preparation method thereof. Background technique [0002] The United States promulgated the "Consumer Product Safety Improvement Act" (CPSIA) in 2008, including the requirements for the total lead content of children's products and the lead content in paint coatings. The EU's European Chemicals Agency has launched a public consultation on limiting the amount of lead in articles or parts of articles that can be put in the mouth of children. Later, it was stipulated that some consumer products with a lead content greater than or equal to 0.05% of the overall weight shall not be placed on the EU market. These consumer products include clothing, shoes, handbags, wallets, accessories, interior decorations, sports and leisure products and other products. Therefore, as a high-risk substance in the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
Inventor 王斌郭敏杨雪娇林涛蒋小良陈晨付刚黄雪琳曾铭温健昌洪嫄钟康华郑少锋李晓丹杨添旺张俊晓
Owner 东莞市信测科技有限公司
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