Metallurgy / Chemicals / Rubber & Plastics

Recently, someone reported the purchase of waste paint buckets in Jinyanshan Industrial Zone, Quanxi Town, Wuyi County. Local law enforcement officials immediately rushed to the scene to investigate the matter. It was verified that in order to save disposal costs, Wuyi County XX Technology Co., Ltd. and Wuyi XX Hardware Factory provided their employees with more than 120 waste paint buckets illegally when they knew that the waste paint buckets generated during the production process were hazardous waste. Recyclers of hazardous waste permits sell them as waste. This behavior has violated the "Law of the People's Republic of China on the Prevention and Control of Solid Waste Pollution". The Wuyi Branch of the Jinhua City Ecological Environment Bureau filed and investigated the two companies involved, and imposed a total fine of 1.26 million. The responsible personnel will be transferred to the public security organ for administrative detention.

Then why do people take risks even knowing they will be punished? It turns out that the main material of the paint bucket is: PTFE, known as the "Plastic King". What is unique about this material that can make everyone take risks? Let's take a look with the editor!

#1

■First of all, PTFE will not become brittle in liquid air, and will not become soft in boiling water. It will not deform from a low temperature of -269.3C (only 4 degrees from absolute zero) to a high temperature of 250 degrees.

#2

■Secondly, PTFE is also very resistant to corrosion. Whether it is strong acid, concentrated alkali or strong oxidant, it cannot touch half of its vellus hair. Its chemical stability exceeds that of glass, ceramics, stainless steel, and even gold and platinum, so that it is still the same after being boiled in boiling aqua regia for dozens of hours.

#3

■Thirdly, the dielectric properties of PTFE are also very good, neither affected by electromagnetic frequency nor changing with temperature.

It is precisely because PTFE has so many rare and valuable characteristics at the same time, so it is valued by people. It has been widely used in refrigeration industry, chemical industry, electrical industry, food industry, pharmaceutical industry, etc.

No.1 used in the medical device industry

In terms of medical equipment, in order to prevent direct contact between the medicine and the equipment that transports the medicine, or to reduce the surface tension or reduce the electrical conductivity, it is certified that PTFE can be used to coat the medicine or health care equipment for the purpose. For example: needle tube (inner needle tube), dripping equipment, medical equipment parts (such as gastroscope camera parts).

No.2 used in the chemical industry

The PTFE coating has remarkable heat resistance stability. It can withstand the temperature to 320℃ in a short time. Generally, it can be used continuously at -190℃~260℃. It does not become brittle when working at cooling temperature. Does not melt. At the same time, PTFE coating has strong physiological inertness. Except for some media, PTFE is almost not corroded by any chemicals, and can protect parts from any kind of chemical corrosion.

No.3 for household appliances

Teflon spraying can also be used on a variety of household appliances to reduce the accumulation of food, grease, and dirt, to achieve the purpose of easy cleaning and improving production quality. For example: ice makers, frying pans, coffee pots, hamburger steak pans, scones pans, molds for various pastries, etc.

No.4 is used in the plastic box rubber industry

Polytetrafluoroethylene can be used to make molds of epoxy resin and phenolic resin products. According to its economic benefits, appropriate PTFE coatings can be sprayed on the surface of the mold to solve the problem of product sticking and difficult demolding, thereby achieving extension The use time of the mold. For example: shoe soles, rubber gloves, tire forming molds, etc.

No.5 used in the electronics and automotive industries

PTFE is the most widely used in the electronics and automotive industries, and the substrate is different in size and material. Polytetrafluoroethylene has reached industrial requirements. Polytetrafluoroethylene coatings and resins can be sprayed in a 100,000-level clean room. For example: conductive valve, cell phone plate, valve, weather strip, hybrid throttle valve, bearing retainer, etc.

Editor's Message:

With the development of various new application scenarios, PTFE has become the fluoropolymer variety with the largest output and the fastest growth in consumption. Although the "Plastic King" has high value and wide applications, its finished product paint buckets are hazardous wastes that are corrosive, toxic, flammable, reactive, or infectious, and are extremely harmful to the environment. Need to be handled properly. Don't take risks because of the high profits of the "Plastic King", or lose big because of small losses.