外賣打包盒的主要材質有PP（聚丙烯）和PS（聚苯乙烯）等。其中，PP材質的打包盒無毒、無味、無嗅，具有耐高溫特性，適合盛裝熱飯熱菜，可在微波爐里加熱，甚至可在蒸氣柜里蒸煮。

The main materials for takeaway packaging boxes include PP (polypropylene) and PS (polystyrene). Among them, PP material packaging boxes are non-toxic, odorless, and odorless, with high temperature resistance characteristics, suitable for holding hot rice and vegetables. They can be heated in a microwave or even steamed in a steam cabinet.

　　PP（聚丙烯）材料是一種廣泛應用于制造塑料制品的熱塑性樹脂。它具有許多優(yōu)良的特性，如低密度、高韌性、耐磨損性、抗沖擊性等。在本文中，我們將討論PP材料的成分、物理特性以及在高溫下可能產生的有害物質失控現(xiàn)象。

PP (polypropylene) material is a thermoplastic resin widely used in the manufacturing of plastic products. It has many excellent characteristics, such as low density, high toughness, wear resistance, impact resistance, etc. In this article, we will discuss the composition, physical properties, and potential loss of control of harmful substances in PP materials at high temperatures.

　　首先，PP材料通常由聚丙烯這種聚合物制成。聚丙烯分子的化學式為（C3H6）n，其中n為一個整數(shù)，代表聚合物中單體的數(shù)量。聚丙烯是一種由烯烴聚合反應制成的熱塑性塑料。它通常通過聚合單體丙烯來制成，可以采用不同的方法生產聚丙烯，包括均相聚合、異相聚合和無障礙聚合。不同的生產方法會產生不同的聚合度、分子量分布和分子結構，這些因素在PP材料的物理特性方面具有很大的影響。

Firstly, PP materials are typically made from polymers such as polypropylene. The chemical formula of polypropylene molecule is (C3H6) n, where n is an integer representing the number of monomers in the polymer. Polypropylene is a thermoplastic made by the polymerization reaction of olefins. It is usually made by polymerizing monomer propylene and can be produced using different methods, including homogeneous polymerization, heterogeneous polymerization, and barrier free polymerization. Different production methods can result in different degrees of polymerization, molecular weight distribution, and molecular structure, which have a significant impact on the physical properties of PP materials.

　　其次，PP材料也有幾個顯著的物理特性。PP材料具有優(yōu)異的水密性和化學惰性，可以輕松抵御腐蝕和藥品侵蝕。此外，PP材料也具有良好的耐熱性能，可以耐受高溫高壓的環(huán)境。它還具有較好的透明性和化學惰性，使得它在食品包裝、藥品瓶、醫(yī)療器械等領域有著廣泛的應用。

Secondly, PP materials also have several significant physical properties. PP material has excellent water tightness and chemical inertness, which can easily resist corrosion and drug erosion. In addition, PP materials also have good heat resistance and can withstand high temperature and high pressure environments. It also has good transparency and chemical inertness, making it widely used in food packaging, drug bottles, medical devices and other fields.

　　以上是關于  一次性外賣打包盒 的介紹，若想了解相關知識可請點擊：http://www.wxzaxf.comt 我們將會全心全意為您提供滿分服務，歡迎您的來電！

The above is an introduction to disposable takeaway packaging boxes. If you want to learn more about related knowledge, please click: http://www.wxzaxf.comt We will wholeheartedly provide you with full score service. Welcome to call us!