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Commonly used are: egg white, wind oil essence.
Baby skin cream, conditioner.
Yams, toothpaste.
All of the above can be used as lubricants without harming the body.
Lubricant is a lubricating medium used to reduce the frictional resistance of the friction pair and slow down its wear.
The lubricant also cools, cleans and prevents contamination of the friction pair.
When selecting lubricants, it is generally necessary to consider the movement of the friction pair, the material, and the surface roughness.
Working environment and working conditions.
In mechanical equipment, most of the lubricants are delivered and distributed to the parts that need to be lubricated through the lubrication system.
Extended Materials. Lubricant is a lubricating medium used to reduce the frictional resistance of the friction pair and slow down its wear. Lubricants also cool, clean and prevent contamination of friction pairs. In order to improve lubrication properties, suitable additives can be added to some lubricants.
When selecting lubricants, it is generally necessary to consider the movement of the friction pair, the material, the surface roughness, the working environment and working conditions, and the performance of the lubricant. In mechanical equipment, most of the lubricants are delivered and distributed to the parts that need to be lubricated through the lubrication system.
The reason why lubricant can play a lubricating role is because its addition reduces the friction of the plastic melt, which is divided into two categories: internal friction and external friction. This correspondingly has an internal lubricant and an external lubricant.
1. The function of the external lubricant is mainly to improve the friction between the polymer melt and the hot metal surface of the equipment, so that the plastic parts are easy to demold, it has poor compatibility with the polymer, and is easy to migrate out from the melt, and can form a thin separator film between the melt and the mold during the molding process, so that the plastic does not stick to the surface of the mold.
2. The internal lubricant has good compatibility with the polymer, and it plays a role in reducing the cohesion between polymer molecules inside the polymer, so as to improve the internal friction heat generation of the plastic melt and the fluidity of the melt.
The binding between the internal lubricant and the long chain molecules of the polymer is not strong, and they may produce something similar to that of a rolling bearing.
Therefore, they can be arranged in the direction of melt flow, so as to slide against each other, so that the internal friction is reduced, which is the mechanism of internal lubrication.
Precautions. There are quite a lot of varieties of lubricants, and the commonly used external lubricants are paraffin wax and stearic acid.
and its salts; Internal lubricants include relatively low molecular weight PE, PTFE, PP, etc. These low molecular weight polymers are not only excellent internal lubricants, but also excellent external lubricants.
Sometimes, the effect of one lubricant is often not ideal, and several lubricants need to be used together, resulting in a combination of lubricants, which can play a multi-faceted role. It works better. The dosage of lubricant is generally:
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What items in the home can be used as lubricantsIf the lock is rusty, we can use cooking oil to drip some and you can open the lock quickly.
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Saliva has the advantage of being readily available, free, and can also be disinfected, but the disadvantage is that the lubrication effect is poor, and it dries immediately.
People have long tried to apply lubricants to the human body, but the wide range of applications is still after 1950, lubricants (liquids) were first used in clinical medicine to examine the human body: many medical devices will cause mechanical damage to varying degrees when they penetrate into the human body, and lubricants can minimize the damage to body tissues and mucous membranes.
Lubricants have been used in human sex life for a long time, but vegetable oils and fats such as olive oil were used in the early days. However, due to the limitation of ingredients, the effect is not ideal, it is easy to contaminate clothes, and it is not easy to be absorbed by the body; Later, petroleum-based mineral oily substances such as petroleum jelly, baby oil, bath gel, and massage oil were also used as lubrication.
Development:
With the development of science and the enhancement of people's awareness of natural environmental protection, the popular water-soluble human lubricant in the 20th century has slowly faded out in the industry abroad, such as more popular in Europe and Oceania, replaced by a more environmentally friendly pure natural human lubricant extracted from corn, sugar beet, rose and other plants (excluding preservatives do not contain any chemical components), or a longer lubrication time of water and grease human lubricant.
In the early days, human lubricants were mainly composed of glycerin and hydrophilic substances, and later improved with sodium hyaluronate, ethyl cellulose, carbomother and other components were added to reduce stickiness and balance pH, so that it was as similar as human body fluids as much as possible, reducing the incidence of allergic symptoms.
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Vegetable oil, and many other things will have additives.
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Baby skin cream, Dabao.
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At home, glycerin, petroleum jelly, cooking oil, lard, essence, etc. are used instead of lubricating liquids. Lubricating fluid is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts, mainly playing the functions of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering.
Lubricating fluid additives: additives are the essence of modern high-grade lubricating oil, correct selection and reasonable addition, can improve its physical and chemical properties, give new special properties to the lubricating oil, or strengthen its original certain properties, to meet higher requirements. According to the quality and performance of lubricating oil requirements, the additives are carefully selected, carefully balanced, and reasonably blended, which is the key to ensure the quality of lubricating oil.
Generally, commonly used additives are: viscosity index improver, pour point lowering agent, antioxidant, cleaning and dispersing agent, friction relieving agent, oily agent, extreme pressure additive, antifoam agent, metal passivating agent, emulsifier, anti-corrosion agent, anti-rust agent, demulsifier, antioxidant and anti-corrosion agent, etc.
The main domestic manufacturers of additives are in the north, because the water content of additives produced in the north is smaller than in the south.
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Dear, hello, I'm glad to answer for you, what can be used to lubricate at homeA: 1. You can use lard and various animal oils at home to replace lubricating fluid, which is widely used; 2. Soap can be used instead of lubricating liquid at home, for example: the use of furniture-type digging, especially wooden furniture, has an astringent touch feeling, and the astringent touch feeling disappears immediately after applying soap; 3. Red wax can be used instead of lubricating liquid at home, for example:
It is difficult to open the zipper of the clothes. After painting, the zipper opens freely; 4. You can use prickly heat powder instead of lubricating liquid at home, for example: some parts of the body feel astringent, especially the palm of the hand, and the astringency will disappear immediately after applying prickly heat powder; 5. White ash and flour can be used instead of lubricating liquid at home, such as:
The wooden furniture of Yub and Heqi shed has an astringent touch to the touch, and the astringent touch sensation disappears immediately after applying soap.
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1. If you need to use lubricating oil temporarily, and you don't have it at home and don't have time to buy it, you can generally use edible oil, petroleum jelly, baby oil, bath liquid, massage oil, etc., which are liquids or solids with a certain lubricating effect and can be used as lubricating oil.
2. Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts, mainly playing the functions of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering (ROAB). As long as it is applied between two objects in relative motion, and can reduce the friction and wear caused by the contact between two objects, it is lubricating oil.
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