Potassium permanganate consumption standard sample for plastic products for food contact and preparation method

Abstract

The invention discloses a potassium permanganate consumption standard sample for plastic products for food contact and a preparation method. The potassium permanganate consumption standard sample is prepared from raw materials including amino molding plastic, alpha wood pulp fiber, calcium carbonate, barium sulfate, titanium dioxide, ammonium sulfamate as a curing agent, polyethylene wax as a flowing agent, zinc stearate as a lubricant and sodium dodecyl sulfate as a surfactant by mixed ball milling, compression molding, compression printing curing and finishing molding in sequence. The preparation method is simple in process, and the prepared potassium permanganate consumption standard sample has good uniformity and stability; constant-value laboratory data is equal in accuracy, and the constant-value data is normally distributed; the blank of the current plastic potassium permanganate consumption standard sample for food contact is filled in, and the standard sample can be used for inspection of entry-exit inspection laboratories, commercial inspection laboratories, quality and technical supervision laboratories and self-inspection and self-control of production enterprises and meets requirements of quality monitoring in the actual testing process.

Description

technical field [0001] The invention relates to a formula and a preparation method of a standard sample, in particular to a standard sample of potassium permanganate consumption of plastic products for food contact and a preparation method. Background technique [0002] In the current era when food safety is gradually rising as the focus of testing, the impact of food contact materials on food safety has also become the focus of attention of various food manufacturers and consumers; at the same time, the consumption of potassium permanganate has also been listed as a national food Key testing items for market access of contact materials and export packaging materials. [0003] In the news of various industries, it is often seen that various food contact materials have been exposed, detained or returned due to unqualified consumption of potassium permanganate. The principle of the potassium permanganate consumption test is to soak the measured sample in distilled water, and ...

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Problems solved by technology

[0005] However, at present, there is no standard sample for the determination of potassium permanganate consumption of food contact plastic products at home and abroad. The pretreatment and testing techniques of various existing methods are not the same, and the results of different methods for the same sample are quite different. The choice of detection standard for potassium manganate consumption has brought troubles

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