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It's better not to use plastic. Other stainless steel, ceramic, glass, all fine.
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Cups, marked 05 and 07 at the bottom, can be filled with boiling water.
Tumbler No. 05:
PP (polypropylene). The bottom of the cup is No. 05, indicating that the cup is made of polypropylene material, which can withstand high temperatures of up to 167, and is the only plastic that can be put into the microwave oven for heating, and polypropylene plastic can be reused and often made into a cup.
It has good thermal stability and insulation, is safe and harmless to the human body. The product can be sterilized and sterilized at a temperature of more than 100 cents, and under the condition of not being affected by external forces, 150 is not deformed, and there is no pressure to fill boiling water.
No. 07 tumbler:
In addition, it is often made of PC (polycarbonate) plastic, and the water cup made of polycarbonate can be filled with hot water, and can also be made into space cups, baby bottles, etc.
However, PC (polycarbocytrate) is easy to release the toxic substance bisphenol A at high temperatures, which is harmful to the human body. Therefore, do not heat it when using it, do not do direct sunlight in the sun, because it will release the substance bisphenol A, and now China prohibits the use of it to make baby bottles to prevent it from being used in infants and young children.
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Trophy.
The cup, a vessel for holding water, has been used for drinking or tea since ancient times. In ancient times, the cup used to drink tea was called gaiwan. Most of the basic vessels are straight or open, with the diameter of the rim nearly equal to the height of the cup.
There are flat-soled, circle-footed, or high-footed. Archaeological data indicate that the earliest cups were first seen in the Neolithic period.
Whether it is in Yangshao culture, Longshan culture or Hemudu cultural sites have seen the existence of pottery cups, this period of cup types are the most peculiar and diverse: with ears with single ears or amphora cups, with feet mostly cone-shaped, three-legged cups, goblet cups, high-handled cups, etc., according to the different materials, can be divided into glasses, plastic cups, ceramic cups, wooden cups, etc.
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I'm dizzy, this is a brain teaser, the front is already there, I personally think it's correct, trophies are also cups, but generally can't be filled with water.
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The trophy can't be filled with water, so it's supposed to be the World Cup.
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1. Stainless steel cup.
The thermal insulation effect is the best, and it is easy to carry, food-grade stainless steel (such as 304 steel), in which the seepage of chromium, manganese and other metals can also be ignored.
2. Ceramic cups.
Ceramic cups, which can withstand high temperatures and have relatively good thermal insulation effects, are relatively high-quality cups, but they are not convenient to carry.
3. Glasses.
Of all the cups, glasses are the healthiest.
Because the glass does not contain organic chemicals during the firing process, we don't have to worry about harmful chemicals being drunk into our stomachs. Moreover, the surface of the glass is smooth and easy to clean, so bacteria and dirt are not easy to breed on the cup wall.
4. PP material water cup.
The pp plastic water cup is made of polypropylene, which has good thermal stability and insulation, is safe and harmless to the human body. The product can be sterilized at a temperature of more than 100 meters, and under the condition of not being affected by external force, 150 meters will not be deformed, and there is no pressure in boiling water.
5. Tritan (Eastman PCTG of the United States), Ecozen (South Korea SK) water cup.
The cups of these two materials are environmentally friendly, high-temperature resistant, BPA-free, durable, and the transparency and feel are comparable to those of PC, but the ** is relatively high.
In summary, ceramic cups and glasses are the healthiest.
People's Daily Online "The Health Secret of Plastic Water Cups, the Preferred Glass Water Cup".
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Cups made of ceramic, glass, stainless steel, and plastic PP (polypropylene) are safe to use.
Cups made of PP (polypropylene) are non-toxic and are manufactured at a processing temperature of 180 240, so boiling water will not break it down. PP has good heat resistance, melting point is 164-170, and the products can be sterilized at a temperature of more than 100 °C; 150 is not deformed without external force. The embrittlement temperature is 35.
Moreover, PP (polypropylene) has good chemical stability, in addition to being eroded by concentrated sulfuric acid and concentrated nitric acid, it is relatively stable to various other chemical reagents.
Data expansion: Polypropylene is a non-toxic, odorless, tasteless milky white highly crystalline polymer with a density of only", which is currently one of the lightest varieties of all plastics. It is particularly stable to water, and its water absorption rate in water is only, with a molecular weight of about 80,000 to 150,000.
The formability is good, but due to the large shrinkage rate (1% Thick-walled products are easy to dent, and it is difficult to meet the requirements for some parts with high dimensional accuracy, and the surface gloss of the products is good.
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