{"id":8639,"date":"2025-05-16T06:54:57","date_gmt":"2025-05-16T06:54:57","guid":{"rendered":"https:\/\/changhongchemical.com\/?p=8639"},"modified":"2026-04-27T11:18:16","modified_gmt":"2026-04-27T11:18:16","slug":"antioxidants-used-in-polymers","status":"publish","type":"post","link":"https:\/\/changhongchemical.com\/id\/antioxidants-used-in-polymers\/","title":{"rendered":"Antioksidan yang digunakan dalam polimer"},"content":{"rendered":"

(1) Antioksidan fenolik
\nPhenolic antioxidants are the most widely used and most abundant antioxidants in polymer materials. The phenolic hydroxyl group in phenolic antioxidants can release active hydrogen to capture the \u2018key offender\u2019 free radicals in polymer degradation. Natural products such as VE, tea polyphenols, and low molecular compounds such as 2,6-di-tert-butylphenol (BHT) are phenolic antioxidants. Hindered phenolic antioxidants are a class of compounds with substituents on one or both sides of the hydroxyl group (-OH) on the benzene ring. Because the hydroxyl group is spatially hindered, the H atom is easily dislodged from the molecule with peroxyl radicals (ROO .) , alkoxyl radicals (RO.), hydroxyl radicals (.OH), etc. to combine to make them inactive, thus terminating the chain reaction of thermo-oxidative aging. Hindered phenolic antioxidants are non-polluting products and are suitable for colourless or light-coloured products. Moreover, hindered phenolic antioxidants have large molecular weight, good compatibility with polymer materials and low toxicity, so the consumption ratio of high molecular weight hindered phenolic varieties represented by 1010<\/a> and 1076 increases year by year, while 1010 becomes the most excellent product among polymer antioxidants with high molecular weight, good compatibility with polymer materials, excellent antioxidant effect, good safety, and the largest consumption.
\n(2) Antioksidan fosfit
\nPeran utama antioksidan fosfit adalah menghilangkan hidroperoksida, tidak hanya degradasi polimer yang akan menghasilkan hidroperoksida, dan antioksidan utama untuk menghambat penambahan hidroperoksida pada saat yang sama juga akan menghasilkan hidroperoksida. Oleh karena itu, sebagai antioksidan tambahan, antioksidan fosfit tidak terlalu efektif bila digunakan sendiri, tetapi memiliki efek yang signifikan bila digunakan bersama dengan antioksidan utama. Produk perwakilan antioksidan fosfat 168 adalah produksi dan konsumsi varietas antioksidan dalam negeri kedua setelah 1010. 626 dan 618 terutama digunakan untuk pemrosesan suhu tinggi bahan polimer atau produk sekitar 300 \u2103, peran bahan polimer untuk secara efektif meningkatkan ketahanan terhadap oksidasi termal suhu tinggi, dengan tetap menjaga penampilan produk polimer yang baik.
\n(3) Antioksidan belerang
\nAntioksidan belerang dan antioksidan fosfor mirip dengan peran peran utama yaitu menghilangkan hidroperoksida, tetapi juga sebagai antioksidan tambahan. Produksi dalam negeri antioksidan yang mengandung belerang menurut struktur molekulnya dapat dibagi menjadi antioksidan ester belerang, antioksidan bisphenol belerang, dan antioksidan fenolik eter belerang 3 varietas. Molekul antioksidan thiobisphenol mengandung struktur fenol yang terhalang, dalam bahan polimer menunjukkan ketahanan oksigen yang tinggi, tahan panas, biasanya antioksidan thiobisphenol dibagi menjadi jenis utama antioksidan fenol yang terhalang.
\n(4) Pasifator ion logam
\nPasifator ion logam mengandung kondensat hidrazida, oksim, dan aldehida-amina serta gugus koordinasi lainnya, kompleksasi ion logam. Produk yang paling representatif adalah 1024, yang merupakan senyawa jenis dihidrazida dan juga mengandung gugus fungsional fenol terhalang gabungan, yang memberikan produk ini ketahanan terhadap tembaga dan ketahanan terhadap penuaan akibat panas dan oksigen.
\n(5) Antioksidan amina aromatik
\nAntioksidan amina aromatik dihasilkan oleh kondensasi aminofenol atau hidrokuinon dengan anilin, jenis produk ini berwarna lebih gelap, merupakan antioksidan yang mencemari, dan sebagian besar produk memiliki tingkat toksisitas tertentu, sejumlah besar produk karet, bahan polimer lainnya, penggunaan lebih sedikit, dan jenis antioksidan ini juga dikenal sebagai antioksidan.<\/p>\n

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(1) Phenolic antioxidants Phenolic antioxidants are the most widely used and most abundant antioxidants in polymer materials. The phenolic hydroxyl group in phenolic antioxidants can release active hydrogen to capture the \u2018key offender\u2019 free…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[152],"tags":[],"class_list":["post-8639","post","type-post","status-publish","format-standard","hentry","category-antioxidant"],"yoast_head":"\nAntioxidants used in polymers - Changhong Chemical<\/title>\n<meta name=\"description\" content=\"(1) Phenolic antioxidants Phenolic antioxidants are the most widely used and most abundant antioxidants in polymer materials. 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