What is the material of pet? Can pets hold food? How high is the temperature of pet?

Speaking of pet materials, many friends are not very clear, and even many people have never heard of pet materials. Then let's see what the pet material is. By the way, can the pet material hold food and how high the temperature can the pet material withstand?

What is the pet material?

I believe many friends don't know much about pet materials, so let's talk about what pet materials are.

Pet is polyethylene terephthalate, which is formed by transesterification of dimethyl terephthalate and ethylene glycol or esterification of terephthalic acid and ethylene glycol to synthesize dihydroxyethyl terephthalate, and then polycondensation.

Commonly known as polyester resin, which belongs to crystalline saturated polyester, is a highly crystalline polymer with milky white or light yellow, smooth and shiny surface, good creep resistance, fatigue resistance, wear resistance and dimensional stability, low wear and high hardness and toughness in thermoplastics; Good electrical insulation, little influence by temperature, but poor corona resistance. Non-toxic, weatherproof, good chemical stability, low water absorption, weak acid and organic solvent resistance, but not hot water immersion and alkali resistance. Mainly used as accessories for switches, instruments and machinery, money counters, etc. in electronic appliances; Flow control valve, pedal transmission device, etc. In the automotive industry; In addition, there are wheelchair body and wheels, clock parts, sprayers and other parts.

Can pets hold food?

Many friends still don't know much about whether pet materials can hold food. The following small series will tell you about this problem.

1, PET is a safe food-grade plastic. As long as there is no overheated liquid and no oil, you can drink water.

2. Most beverage bottles are made of PET, which is a polymer material and widely used in all kinds of food packaging. These materials are non-toxic and tasteless at low temperature, so it is safe for people to pack drinks. However, once polyethylene encounters high temperature or exposure, it will slowly dissolve and release organic solvents harmful to human health.

No matter what plastic products are made, all kinds of additives, such as light resistance and smoothing agent, should be added in the production process. These chemicals are toxic to human body. If rice, flour, drinking water, oil, wine and other substances are packed in plastic bottles for a long time, it is easy for Shu to dissolve the harmful substances inside and bring them into the human body. In addition, after repeated use of mineral water bottles or beverage bottles, the hygiene index can not be reached, and bacteria may multiply in the bottles. Therefore, it is suggested to pack food in bottles made of glass, stainless steel and other materials, which will be safer.

How high is the temperature resistance of pet material?

I believe many people don't know how many degrees of high temperature pet material can withstand, so let's take a look at this problem!

The working temperature of PET can reach 1 15 degrees, the short-term temperature can reach 160 degrees, and the melting point is almost 255 degrees.

Is the PET material resistant to high temperature, such as plastic bottles: Look at the logo and Arabic numerals on it. A triangle of three arrows means "recyclable". The numbers in it represent different materials. If the product is made of several different materials, indicate the main material of the product. These figures do not directly represent the heat resistance of plastic bottles, but if we can understand the materials represented by each figure, it will also facilitate consumers to use plastic products more scientifically:

1 stands for PET (polyethylene terephthalate), which is used for general mineral water, carbonated drinks and functional drink bottles. It is easy to deform when the temperature is high, and some harmful substances may be dissolved. Don't put mineral water in the open air or in the car in hot weather, and don't flush boiling water directly into coke bottles.

2, stands for HDPE (High Density Polyethylene), a plastic bag widely used in supermarkets and shopping malls. High temperature resistance, but not easy to clean, easy to breed bacteria.

3, stands for PVC (polyvinyl chloride), in which plasticizer contains harmful substances, and it is easy to precipitate when it meets high temperature and grease. At present, many plasticizers have been banned in Europe, and plastic products used for packaging food are rarely used in China;

The above is about what the pet material is, whether the pet material can hold food, and how high the temperature resistance of the pet material is. I hope I can help you!