Composition and selection of chemical protective clothing

Personal protective equipment refers to people in production and life in order to defend against a variety of occupational poisoning and injury in the labor process to wear and equipped with a variety of supplies, also known as personal protective equipment or individual labor protection supplies.

In some cases, such as poisoning accidents or equipment maintenance, the reasonable use of personal protective equipment can play an important protective role.

Personal protective equipment includes protective clothing, protective shoes and hats, protective gloves, protective masks and glasses, sound insulation, respiratory protection, skin protection agents, etc., the main role has two kinds: thermal insulation shielding and absorption filtration.

Protective clothing, masks, hats, gloves, protective masks, sound insulation and so on. For example, according to the main productive harmful factors of the exposure occupation, it can be equipped with dustproof, anti-acid and alkali corrosion, anti-high temperature radiation and anti-radioactive material contamination protective clothing; According to the frequency spectrum and intensity of noise can be equipped with inner ear or outer ear sounders, etc., to reduce the direct contact of workers or the degree of pollution, play a certain protective role.

There are respiratory protective appliances and protective glasses that play the role of absorption and filtration, such as filter gas masks that can absorb and filter toxic gases and dust, and protective eye lenses can selectively absorb and filter ultraviolet rays.

Because eye injury is a relatively high frequency of industrial injury. Therefore, different types of protective glasses should be selected according to the nature of the operation: protective glasses of solid debris are mainly used to resist mechanical damage to the eyes such as metal or sand debris; Chemical solution protective glasses, mainly used to prevent chemical damage to the eyes with irritating or corrosive chemical solutions; Radiation protective goggles are mainly used to protect against the harm of excessive ultraviolet radiation to the eyes.

Respirators include dust masks, gas masks, gas masks, etc., there are many types. According to the structure and principle of action is divided into filter type and isolation type two categories. Among them, the filter type respiratory protector is also known as the purification type protector. Mechanical filter type is suitable for preventing various dust, smoke or fog and other harmful substances, often called dust mask. The mask with good performance can filter out fine dust, and has good ventilation and low resistance. After this kind of mask is used for a period of time, due to dust and other blocking the porosity of the filter material, the resistance will increase, and attention should be paid to replacing the filter material. Chemical filter type for gas protection, also known as gas mask. Face mask made of thin rubber, with a hose or directly connected to the cartridge. If the harmful substances do not irritate the skin, only a mask connected to the pill box can be used. Because of the different poisons to be purified, different filter materials need to be selected. The commonly used filter material activated carbon has different degrees of adsorption on various gases and vapors. The isolation type respiratory protector is also called the air supply type protector. There are two types: built-in oxygen type and external input type. The built-in gas supply bottle is on the back of the body, and the working time can be maintained for half an hour to two hours depending on the size of the gas bottle. The air-supplied protector is mainly used by disaster relief personnel in the event of an accident, or in an unventilated working environment with a high concentration of hazardous substances and a lack of oxygen. In the presence of flammable and explosive substances, it is necessary to pay attention to the gas cylinder in case of leakage will cause an accident. The external input type has two kinds of snake tube mask and gas mask, the air is supplied by the air compressor or blower, and the belt used to fix the snake tube can be connected to the long rope, so that the rescue can be carried out by the long rope in the event of an accident. Its scope of application is the same as the self-contained type, but the range of activity is limited by the length of the snake tube.

When choosing personal protective equipment, we should not only pay attention to the protective effect, but also consider whether it meets the physiological requirements and is easy to use.