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Lead-containing paint coating standard substance and preparation method thereof

A technology of paint coating and standard substance, which is applied in the field of lead paint coating standard substance and preparation for testing lead content, can solve problems such as high price, difficult matching of matrix, affecting test accuracy and recovery rate, etc. Good uniformity and high stability

Active Publication Date: 2013-09-18
DONGGUAN LUNGCHEONG INST OF INTELLIGENT TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the standard substance used in the market for the test of total lead in coatings is NIST2582 in the United States. NIST2582 is mainly an inorganic substrate. The substrate is complex and difficult to match, which directly affects the test accuracy and recovery rate, and the price is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 making content is the dry coating standard substance of 90mg / kg:

[0030] Example 1: Standard substances were prepared by using thermoplastic acrylic paint, using raw materials including thermoplastic acrylic resin, solvents including propyl acetate, butyl acetate, isopropanol and ethylene glycol ether, and white carbon black as the filler.

[0031] The weight ratio of each component of the paint is: thermoplastic acrylic resin 8kg, filler 2kg, solvent about 10kg (12L), and the mass of basic lead carbonate weighed is 1.4g. The prepared coating has a lead content of 90 mg / kg-110 mg / kg, subject to the final value.

[0032] The production method of thermoplastic acrylic paint comprises the following steps:

[0033] (1) Crush the thermoplastic acrylic resin into a powder of about 100 mesh with a pulverizer in advance, and store it dry and sealed for later use.

[0034] (2) Put thermoplastic acrylic resin powder, filler, and solvent in a mixing tank according ...

Embodiment 2

[0039] A thermoplastic acrylic paint, comprising: thermoplastic acrylic resin, solvents including propyl acetate, butyl acetate, isopropanol, ethylene glycol ether, and fly ash as an additive.

[0040] The weight ratio of each component of the paint is: 3 kg of thermoplastic acrylic resin, 2 kg of filler, about 5 kg (6L) of solvent, and the mass of lead oxide weighed is 0.55 g. The prepared coating has a lead content of 90 mg / kg-110 mg / kg, subject to the final value.

[0041] The production method of thermoplastic acrylic paint comprises the following steps:

[0042] (1) Crush the thermoplastic acrylic resin into a powder of about 100 mesh with a pulverizer in advance, and store it dry and sealed for later use.

[0043] (2) Put thermoplastic acrylic resin powder, filler, and solvent in a mixing tank according to the weight ratio, and use a mixer to stir and disperse to obtain thermoplastic acrylic paint.

[0044] (3) Then add the aqueous solution of lead-containing compound ...

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Abstract

The invention relates to a lead-containing paint coating standard substance and a preparation method thereof. The lead-containing paint coating standard substance comprises thermoplastic acrylic resin, auxiliaries (pigment, a dispersing agent and the like), filler, a solvent and lead-containing compound salt. The preparation method of the lead-containing paint coating standard substance comprises the following steps of: grinding the thermoplastic acrylic resin into powder by adopting a grinding machine; placing the thermoplastic acrylic resin powder, the pigment, the dispersing agent, the filler and the solvent into a stirred tank in weight proportion, stirring by adopting a stirring machine, and dispersing to obtain thermoplastic acrylic acid paint mixture; then adding a low acid aqueous solution containing a lead element into stirred and dispersed paint mixture, uniformly smearing the paint mixture onto a glass plate, and placing the glass plate into a drying oven to be dried; and grinding the dried mixture to obtain the lead-containing paint coating standard substance. For testing, influence on a basal body is small, uniformity of the lead-containing paint coating standard substance is good, batch production can be realized, speed is high, and the obtained lead-containing paint coating standard substance is high in stability.

Description

technical field [0001] The invention relates to a lead-containing standard substance and a preparation method thereof, in particular to a lead paint coating standard substance for testing lead content and a preparation method thereof. Background technique [0002] At present, the standard substance used in the market for the test of total lead in coatings is NIST2582 in the United States. NIST2582 is mainly an inorganic substrate. The substrate is complex and difficult to match, which directly affects the test accuracy and recovery rate, and the price is high. my country is a big toy producing country, and a large number of chemical laboratories use this reference material, so it is particularly important to prepare lead coating reference materials for chemical testing in line with my country's national conditions. Contents of the invention [0003] The object of the present invention is to overcome the disadvantages of the prior art, and provide a lead-containing paint c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 梁钟铭
Owner DONGGUAN LUNGCHEONG INST OF INTELLIGENT TECH
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