Frostiness detection method and unit for rubber product

Abstract

In the present invention, rubber product is set in a simulated environment, and the environment factors, such as humidify, temperature and ozone content, are increased, so that the said rubber product is made to frost fast. The unit includes a sealed space for tray holding rubber product to be set; one heater, a ozone machine and a humidifier to introduce heat, ozone and humidity to the sealed space; temperature controller and timer to control temperature; and blower to circulate the heat, humidity and ozone in the saeled space.

Description

technical field [0001] The invention relates to a method and device for testing frosting of rubber products, which are mainly suitable for testing whether rubber products are frosting or whitening. Background technique [0002] Rubber products are made by adding sulfur and corresponding compounding agents to natural rubber or artificial rubber, and heating to accelerate the chemical reaction. Often rubber products are stored for a period of time (about 7-30 days), and there will be frost (whitening) phenomenon on the surface of rubber products. There are two main reasons for rubber spit cream: [0003] a. Because the amount of sulfur powder compounding agent and accelerator is not in the right proportion to the rubber, that is, if the amount exceeds the solubility of the rubber (natural rubber or artificial rubber or the mixture of the two), the excess amount will gradually precipitate out. on the surface of the product; [0004] b. Insufficient heating time to accelerate...

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Problems solved by technology

[0004] b. Heating to promote vulcanization reaction time is insufficient, resulting in part of the rubber molecules not combined with sulfur, resulting in strong activity of rubber molecules in the product, easy to combine with ozone in the air to oxidize and crack, and then show the internal powder

[0005] Due to the above reasons, in humid and high temperature weather, ozone will be produced in the air, and the high temperature will help the powder that exceeds the solubility to precipitate more easily. If the rubber factory cannot immediately detect whether the product will produce frost, wait for dozens of days. Frost will occur, and some of the frost (whitening) phenomenon can be scrubbed with solvents, but the phenomenon of spit will reappear after being stored for a period of time after washing; some cannot be wiped off with solvents, so the phenomenon of spit will cause rubber products to be missing and the appearance is not good Ya, cause customer claims, returns, so the loss in money is great, and damage to the company's reputation

Even if it can be scrubbed with solvents, just dispatching staff to handle the scrubbing and the cost of purchasing solvents has increased a lot of costs and losses, and it has also led to management difficulties such as dispatching staff to work overtime and arranging equipment.

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