What is the difference between plastic barrel pc and pet

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List of contents for this article:

• 1、Which anti-aging effect is the best in food grade plastic cans
• 2、What is the difference between pet barrel and pc barrel?
• 3、Which is better, a plastic bucket made of pc or pet

Which anti-aging effect is the best in food grade plastic cans

1. The best anti-aging effect among food-grade plastic barrels is the modified high density polyethylene (HDPE) barrel with compliance ultraviolet stabilizer and food-grade carbon black masterbatch. The core properties of pure HDPE itself has high crystallinity and molecular chain structure. Stable, weather resistance is better than that of common food-grade plastic materials such as unmodified PET and PP, and its basic anti-aging ability is better than that of most similar products.

2. Polyvinyl chloride (PVC) barrels: The molecular chain contains chlorine groups, which are prone to dechlorination and degradation under ultraviolet light and high temperature environments. It will not only accelerate the aging of the material, but may also release harmful substances.

3. Stronger durability: excellent impact strength and aging resistance. It can be used stably in the range of-40℃ to 80℃. It is suitable for most temperature scenarios of water and fertilizer fermentation, and its normal service life can reach 3 to 5 years. Food-grade PP is the second-choice material with more outstanding high temperature resistance: it can withstand high temperatures within 100 ° C and is suitable for water and fertilizer fermentation scenarios using high-temperature decomposition processes, making up for the slightly weak high temperature stability of HDPE.

What is the difference between pet barrel and pc barrel?

1. The main differences between PET buckets and PC buckets are as follows: The material has different melting points. PC buckets: The polycarbonate (PC) material is used, and its melting point is 220-230℃. This means that when this temperature approaches or exceeds, the PC bucket may be deformed or damaged. PET bucket: It is made of polyethylene terephthalate (PET) material and has a melting point of 250-255°C.

2. The main differences between PET buckets and PC buckets are as follows: The melt temperature is different: PC buckets: The melting point is 220230℃. PET bucket: melting point is 250255°C. Different material characteristics: PC bucket: colorless and transparent, good heat resistance, strong impact resistance, flame retardant performance level BI, and good mechanical properties at ordinary use temperatures.

3. Different materials: PC barrels are made of polycarbonate, while PET barrels are made of polyester. Different physical properties: PC barrels have the characteristics of high strength, high toughness, high temperature resistance, impact resistance, etc., while PET barrels are light, flexible, transparent, and corrosion resistant. Different safety: Because PC barrels contain harmful substances such as bisphenol A, it will cause harm to the human body, while PET barrels are relatively safe and will not release harmful substances.

Which is better, a plastic bucket made of pc or pet

When comparing PET and PC materials for pure water buckets, a PC material bucket is generally considered a better choice. PC (polycarbonate) materials are favored for their flame retardant properties, antioxidant properties and wide range of applicable temperatures. Plastic barrels made of PC material have good transparency, light weight and excellent impact properties. In addition, PC materials also have good high temperature resistance and corrosion resistance, and have low water absorption.

PC is good. Relatively speaking, the bucket made of PC material is more safe. PC is polyester carbonic acid, which has flame retardant and oxidation resistance. It is used at a wide range of temperatures and has excellent insulation. The plastic bottles made are transparent, light in weight, and have good impact. It has certain high temperature resistance and corrosion resistance. The water absorption rate of PC is also relatively small. However, PC plastic raw materials are expensive, and its injection molding process is difficult. The price of the plastic barrels made is also more expensive than pet plastic barrels.

There are three common materials for plastic barrels of bottled water: PC, PP, and PET. PC material has the highest stability, is resistant to high temperatures and does not contain bisphenol A. It can be directly filled with boiling water. PP material is second, which is safer for short-term use, but may be slightly deformed at long-term high temperatures. PET material is not resistant to high temperatures and easily releases harmful substances. It is only suitable for disposable bottled water and cannot be reused.

For outdoor use scenarios, by adding hindered amine light stabilizers and food grade carbon black masterbatch that comply with GB 9685-2023 "Standard for the Use of Additives for Food Contact Materials and Products", the damage of ultraviolet light to plastic molecular chains can be effectively blocked, and the outdoor effective service life has been increased from about 1 year for pure HDPE to 2-3 years.

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