What is an electronic cigarette? What is an electronic cigarette?

What is an electronic cigarette? What is an electronic cigarette?

Editor's Guide: what is electronic cigarette? Many people may only listen to e-cigarettes and have not understood in detail what e-cigarettes are. Therefore, Xiaobian has sorted out the information for you today to help you deeply understand the product of e-cigarettes.

What is an electronic cigarette? Many people may only listen to e-cigarettes and have not understood in detail what e-cigarettes are. Therefore, Xiaobian has sorted out the information for you today to help you deeply understand the product of e-cigarettes.

What is an electronic cigarette?

Electronic cigarette (English: electronic cigarette), officially known as electronic atomizer (vape, transliteration "Weibu"), is a kind of atomizer powered by rechargeable lithium polymer battery, which heats the electronic liquid in the "cigarette bomb" (commonly known as tobacco oil, electronic juice, E-liquid or e-juice; contains propylene glycol (PG), vegetable glycerin (VG), flavor or nicotine), Electronic cigarette does not need to burn, it only produces "steam", does not produce smoke, second-hand smoke, three hand smoke, no tar and carbon monoxide [1], so that some medical professionals think it is a potential nicotine substitute, theoretically can also reduce the impact of some traditional cigarette smoke on the body, and the possibility of fire. And to keep smokers who replace paper cigarettes with electronic cigarettes away from carcinogens in paper cigarettes. The comparison of the harm of e-cigarettes and cigarettes to human body is still controversial. The British Department of Health reported in 2018 that e-cigarettes have 95% less harm than traditional paper cigarettes and help 20000 smokers quit smoking every year [2]. However, some scholars pointed out that 95% of the data sources cited in this report have weak evidence and conflict of interest [3]. Some countries do not have clear laws governing e-cigarettes, and there is a lack of monitoring on product quality, nicotine content, sales channels and users.

What is an electronic cigarette? principle

The electronic cigarette is generally composed of a host (equipped with a battery, often a lithium-ion polymer battery) and an electronic atomizer (filled with electronic liquid). 1,2-propanediol and glycerol are the main blending agents of tobacco oil, and some are added with addictive substance nicotine and other spices. The atomizer has an atomization core, which is used to heat the electronic liquid into mist. The service life of the atomizing core is limited.

There are two main hosts: electronic and mechanical: most electronic hosts have short-circuit protection mechanism, which will automatically fail to fire when the atomizer is short circuited. At present, the mainstream chips in the market include yihi and DNA, and both chips have their favorite users; Mechanical hosts rely entirely on electrical principles. Almost all of the hosts causing explosions in the media are of this type. The main causes of explosions are mostly accidents such as short circuit of atomizer, mismatched battery and continuous firing without being aware of false contact. However, due to beautiful shape, there are many collectors, and special materials or brands can often get high prices in the market.

Atomizers are mainly divided into RDA (rebuildable dripped atomizer) and RTA (rebuildable tank atomizer). According to the consumers, RDA has a good taste of tobacco oil and drops as much as you smoke. Generally, there is a large space in the warehouse and fancy coils can be used; RTA is convenient to go out. The oil bunker can be filled and pumped continuously. Generally, the space in the bunker is small. Recently, some manufacturers have launched rdta, including adding oil silos on the basis of RDA, or strengthening the structure on the basis of RTA to make it close to the taste of RDA.

The atomizing core is usually a coil (usually made of nickel) and cotton. After cotton absorbs the tobacco oil, the coil wound on it is energized to generate heat energy to heat the tobacco oil. Some atomizing cores can be repeatedly tied with new coils and replaced with new cotton.

What is an electronic cigarette? component

It consists of 4 fixed ingredients: Vegetable Glycerin (VG), propylene glycol (PG), natural or artificial flavor and nicotine (optional). The liquid is then continuously heated by a heating coil called an atomizer to produce smoke.

Vegetable glycerin (VG)

VG, a common drug and food additive (commonly used for making cakes, chocolates and other sweets), has no side effects on human body. It is colorless and tasteless, very hygroscopic, but viscous, so it will slightly increase the difficulty of cleaning the atomizer and reduce the oil conduction speed of the core (relatively easy to dry burn / paste). VG can be extracted directly from vegetable oil, coconut oil and palm oil, heated to high temperature, and then distilled and purified. Therefore, USP food grade vegetable glycerin used in regular e-cigarette liquid has 99.7% purity + 0.3% water.

Propylene glycol (PG)

Also known as PG, it is used to dilute VG viscosity. It is hygroscopic, slightly sweet, colorless and tasteless, and its fluidity is similar to that of water. The US Food and Drug Administration (FDA) describes PG as "generally safe for human body" (only refers to ingestion). It is a common drug and food additive. PG has good oil conductivity and produces "a small amount of smoke" and "throat feeling" similar to smoking.

PG has been classified as a safety additive (only refers to ingestion) by FDA research. Although it is also one of the benchmark materials of antifreeze, it is often used in the field of antifreeze and food and beverage with special requirements. Although PG is generally safe, a small number of people will have some mild allergic symptoms, such as throat discomfort, phlegm, dizziness, etc. these side effects are relatively short and mild.

However, the FDA's statement is actually "generally recognized as safe (GRAS)". This definition refers to "ingestion". Other methods such as inhalation, injection or local use are not within the scope of GRAS! Therefore, the safety of aerosol produced by electronic cigarette atomizing tobacco oil is not within the scope of FDA guarantee.

Natural or synthetic flavor oil

In addition to tobacco flavor, it can also produce complex and changeable flavors through various natural or synthetic edible spices, such as fruits, desserts, drinks and so on.

nicotine

Nicotine is an addictive substance, which can not be added to e-cigarettes. Compared with tobacco, the nicotine content of tobacco oil has been proved to be within the safe range for human intake. The nicotine content in tobacco oil is generally below tens of milligrams, and some do not contain nicotine.

Compared with more than 4000 harmful substances released after tobacco combustion, the composition of electronic cigarette oil is healthier. Moreover, when the nicotine content of e-cigarettes is reduced to a safe level for human intake, it will have a certain sedative effect on human body and improve attention.

What is an electronic cigarette? history

Herbert A. Gilbert, an American, obtained the patented design of a "smokeless and non tobacco cigarette" in 1963. The device heats the liquid nicotine to produce steam to imitate the feeling of smoking. In 1967, several companies tried to produce the electronic cigarette, but in the end, there was no record about the device.

In 2000, Han Li, a traditional Chinese medicine doctor in Beijing, proposed diluting nicotine with propylene glycol and atomizing the liquid with an ultrasonic device to produce a water mist effect (in fact, atomized gas is produced by heating). The user can suck the nicotine containing water mist into the lungs and deliver nicotine to the blood vessels. The liquid nicotine diluent is stored in a device called smoke bomb for easy carrying. In 2004, Han Li obtained the invention patent of electronic cigarette, which was sold by China Ruyan company the following year. With the popularity of anti smoking campaigns abroad, e-cigarettes also flow from China to the western world.

In March 2018, Japan held the first international e-cigarette Exhibition "vape Expo Japan".

In April 2018, the UK launched the world's first e-cigarette month smoking cessation campaign "vapril" to promote people to use e-cigarettes to stay away from the harm of cigarettes.

In early October 2018, Shenzhen Convention and Exhibition Center held the international e-cigarette exhibition. Ninety percent of the world's electronic cigarette equipment is produced in Shenzhen.