{"id":4670,"date":"2021-07-02T09:30:20","date_gmt":"2021-07-02T09:30:20","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=4670"},"modified":"2026-04-28T10:41:50","modified_gmt":"2026-04-28T10:41:50","slug":"how-to-choose-sunscreen","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/id\/how-to-choose-sunscreen\/","title":{"rendered":"Bagaimana cara memilih tabir surya?"},"content":{"rendered":"<h4 class=\"wp-block-heading\">Musim panas sedang terik-teriknya, dan banyak tempat di seluruh negeri ini yang sangat panas dan terik. Sebagai praktisi kimia, tentu saja, Anda harus mengambil sikap yang ketat terhadap perlindungan dari sinar matahari. Lalu bagaimana cara memilih tabir surya?<\/h4>\n\n<!-- lc-qa-start -->\n<p><strong>Jawaban singkat:<\/strong> A practical UV ink decision usually starts with the printing method and substrate, then checks cure depth, transfer quality, adhesion, and color stability under real line conditions.<\/p>\n<!-- lc-qa-end -->\n\n\n\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image.png\" alt=\"\" class=\"wp-image-4680\"\/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Pertama-tama, mengapa Anda memerlukan perlindungan dari sinar matahari berdasarkan sedikit ilmu pengetahuan? Alasannya, karena ada sinar ultraviolet di bawah sinar matahari. Sinar ultraviolet adalah istilah umum untuk radiasi dengan panjang gelombang dari 100nm hingga 400nm dalam spektrum elektromagnetik, yang tidak dapat menyebabkan penglihatan orang. Sederhananya, sinar ini ada di bawah sinar matahari, tetapi Anda tidak dapat melihatnya. Sinar ultraviolet dapat menyebabkan kerusakan pada kulit, terutama dermis. Sinar ultraviolet umumnya dibagi menjadi tiga kategori menurut panjang gelombang yang berbeda, <a href=\"https:\/\/longchangchemical.com\/id\/product\/diethylamino-hydroxybenzoyl-hexyl-benzoate-dhhb-uvinul-a-plus-cas-302776-68-7\/\">UV<\/a>A, UVB, dan UVC.<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-1.png\" alt=\"\" class=\"wp-image-4681\"\/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">UVC ultraviolet gelombang pendek: Merupakan sinar ultraviolet dengan panjang gelombang 100~280 nm. UVC adalah yang paling berbahaya bagi organisme. Namun demikian, sinar ini diserap dalam lapisan ozon... dan mudah terhalang... jadi tidak apa-apa tanpa perlindungan apa pun.<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"500\" height=\"37\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-2.png\" alt=\"\" class=\"wp-image-4682\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-2.png 500w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-2-300x22.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Ultraviolet UVB gelombang menengah: Ini adalah sinar ultraviolet dengan panjang gelombang 280 ~ 320 nm. Sinar ultraviolet dalam gelombang menengah memiliki efek fisiologis tertentu pada kulit manusia. Sinar ini bekerja lebih banyak pada epidermis. Karena energinya yang lebih tinggi, sinar ini dapat menyebabkan kerusakan cahaya yang kuat pada kulit. Pembuluh darah kulit di area yang disinari melebar, dan kulit mungkin mengalami gejala seperti bengkak dan lecet. Paparan jangka panjang pada kulit akan menyebabkan eritema, peradangan, dan penuaan kulit (Hanya terbakar sinar matahari). Oleh karena itu, UVB juga disebut bagian kulit terbakar (merah) dari sinar ultraviolet, yang merupakan pita ultraviolet yang harus dicegah.<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"500\" height=\"37\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-3.png\" alt=\"\" class=\"wp-image-4683\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-3.png 500w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-3-300x22.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">UVA ultraviolet gelombang panjang: Ini adalah sinar ultraviolet dengan panjang gelombang 320~400 nm, yang dibagi lagi menjadi UVA-1 dan UVA-2. Penetrasi sinar ultraviolet gelombang panjang pada pakaian dan kulit manusia jauh lebih kuat daripada sinar ultraviolet gelombang menengah. Sinar ini dapat mencapai jauh ke dalam dermis dan dapat bekerja pada melanin di epidermis, menyebabkan penumpukan melanin pada kulit, menggelapkan kulit, dan melindungi kulit dari sinar ultraviolet. Melindungi kulit. Oleh karena itu, ultraviolet gelombang panjang juga disebut \"bagian penyamakan.\"<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"500\" height=\"37\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-4.png\" alt=\"\" class=\"wp-image-4684\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-4.png 500w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-4-300x22.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Dapat dilihat bahwa untuk mencegah kerusakan kulit yang disebabkan oleh radiasi ultraviolet pada tubuh manusia terutama adalah dengan mencegah radiasi ultraviolet UVB; dan untuk mencegah UVA adalah dengan menghindari penyamakan kulit.<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"500\" height=\"37\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-5.png\" alt=\"\" class=\"wp-image-4685\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-5.png 500w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-5-300x22.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Jadi untuk mencegah dunia dari kehancuran dan kulit dari kerusakan akibat sinar ultraviolet, orang menciptakan tabir surya. Semua orang pasti sudah mengetahui faktor SPF (Sun Protection Factor) pada tabir surya. Dari mana koefisien ini berasal? Misalnya, setelah seseorang terpapar sinar matahari selama 20 menit, kulit mulai memerah dan muncul eritema, dan setelah mengoleskan tabir surya, waktunya menjadi 10 jam (600 menit), maka SPF produk tabir surya ini adalah 10 jam \/ 20 Menit = 30, yang sebenarnya merupakan kelipatan dari waktu terbakar matahari terpendek, jadi... efek tabir surya masih terkait dengan fisik pribadi Anda ... Jika Anda terkena sengatan matahari hanya dalam waktu 1 menit, izinkan saya membuat ekspresi sedih. .. (Siswa sains selalu merasa bahwa eksperimen semacam ini terlalu akurat = =)<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"500\" height=\"37\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-6.png\" alt=\"\" class=\"wp-image-4686\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-6.png 500w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-6-300x22.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Ada juga indeks pada tabir surya yang disebut PA, umumnya PA+, PA++, PA+++, ini adalah kemampuan tabir surya untuk mencegah kulit terbakar. Namun definisinya masih sangat samar... yaitu, dapat mencegah penyamakan, secara efektif mencegah penyamakan, dan... sangat efektif mencegah penyamakan.<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"500\" height=\"37\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-7.png\" alt=\"\" class=\"wp-image-4687\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-7.png 500w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/image-7-300x22.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Karena UV sebenarnya dicegah, kita bisa langsung menggunakan spektrofotometri UV-Vis untuk menentukan apakah tabir surya itu efektif atau tidak! Oke, oke, ini sebenarnya hanya menggunakan seberkas cahaya untuk mengambil foto, dan kemudian melihat seberapa banyak yang diserap. Semakin banyak yang diserap, semakin sedikit yang sampai ke kulit, dan semakin baik efek tabir surya!<\/h4>\n\n\n\n<h2 class=\"wp-block-heading\">1. Timbang tabir surya hingga ke 0,0001g terdekat<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"640\" height=\"708\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/\u5fae\u4fe1\u56fe\u7247_20210702171729.jpg\" alt=\"\" class=\"wp-image-4671\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/\u5fae\u4fe1\u56fe\u7247_20210702171729.jpg 640w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/\u5fae\u4fe1\u56fe\u7247_20210702171729-271x300.jpg 271w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/\u5fae\u4fe1\u56fe\u7247_20210702171729-600x664.jpg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">2. Encerkan dengan air, aduk rata dengan ultrasound, tambahkan air 1000 kali (mL) dari massa yang ditimbang (g)<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"640\" height=\"801\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/2.jpg\" alt=\"\" class=\"wp-image-4672\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/2.jpg 640w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/2-240x300.jpg 240w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/2-600x751.jpg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">3. 4500\u03bcL air + 500\u03bcL pengencer<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"640\" height=\"800\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/3.jpg\" alt=\"\" class=\"wp-image-4673\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/3.jpg 640w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/3-240x300.jpg 240w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/3-600x750.jpg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">4. Bunyi toot toot, pusaran dan kocok, dan aduk rata<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"640\" height=\"797\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/4.jpg\" alt=\"\" class=\"wp-image-4674\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/4.jpg 640w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/4-241x300.jpg 241w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/4-600x747.jpg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">5. Pipet sel, gunakan ini untuk mengukur absorbansi, pertama-tama ukur latar belakang<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"640\" height=\"801\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/5.jpg\" alt=\"\" class=\"wp-image-4675\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/5.jpg 640w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/5-240x300.jpg 240w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/5-600x751.jpg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">6. U-3010, UV-vis. Masukkan ke dalam! pemindaian! Dapatkan spektrum.<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"640\" height=\"425\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/6.jpg\" alt=\"\" class=\"wp-image-4676\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/6.jpg 640w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/6-300x199.jpg 300w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/6-600x398.jpg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Spektrum ini...lihatlah seperti ini...sumbu horizontal adalah panjang gelombang, dan sumbu vertikal adalah absorbansi. Sederhananya, antara 280 ~ 400nm pada sumbu horizontal, semakin tinggi garisnya, semakin baik efek tabir surya! Antara 280 ~ 320nm adalah kapasitas penyerapan UVB, yaitu kemampuan untuk terbakar sinar matahari, dan antara 320 ~ 400nm adalah kapasitas penyerapan UVA. Karena konsentrasi yang dikonfigurasi di atas adalah sama! Jadi, Anda bisa menempelkan semua merek yang diuji dalam gambar untuk perbandingan, sehingga Anda mendapatkan spektrum OTZ dari gambar ini.<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"388\" height=\"257\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/7.jpg\" alt=\"\" class=\"wp-image-4677\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/7.jpg 388w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/07\/7-300x199.jpg 300w\" sizes=\"(max-width: 388px) 100vw, 388px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Sebanyak 9 sampel diuji kali ini, yaitu ... Dior (menurut saya ini seperti alas bedak cair), Vichy, dan L'Oreal Paris (dua jenis, botol putih dan biru warnanya berbeda), Materia Medica yang terjangkau, Mentholatum, skinfood, serta harta karun besar yang Anda lihat setiap hari dan bayi air terpanas di Internet ... Berikut ini adalah hasilnya:<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Dior, prinsip kebebasan nama besar, jauh di depan perlindungan UVB, yaitu, dapat memperpanjang kulit terbakar untuk waktu yang lebih lama, tetapi tidak begitu baik dalam perlindungan UVA, tetapi melampaui merek lain ~ tetapi harganya sangat mahal. !<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Vichy, kinerjanya sangat bagus, perlindungan UVA sudah ada, secara efektif dapat mencegah penyamakan, dan penyerapan UVB juga sangat baik. Ini sangat bagus untuk penggunaan normal.<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Kedua tabir surya dari L'Or\u00e9al Paris juga bekerja dengan baik, dengan penyerapan yang merata. Pita 340~380, yang umumnya tidak bekerja dengan baik pada tabir surya lain, masih memiliki penyerapan yang lebih tinggi, memberikan lebih banyak pita perlindungan, dan pada saat yang sama, penyerapan UVB juga cukup.<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Tabir surya Mentholatum bekerja dengan baik di UVB, tetapi tidak terlalu ideal dalam hal perlindungan UVA, dan... bisakah saya mengeluhkannya, apakah ini terutama seperti cairan koreksi...?<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Tabir surya herbal yang cocok relatif lancar dalam penyerapannya, tetapi bukan tabir surya biasa yang luar biasa.<\/h4>\n\n\n<!-- lc-commercial-start -->\n<h2>A practical buying checklist for UV ink applications<\/h2>\n<p>In UV printing, the best technical choice usually comes from balancing curing performance with print behavior. Teams normally get the strongest result when they review substrate fit, line speed, image quality, and post-cure durability together rather than optimizing only one variable.<\/p>\n<ul>\n<li><strong>Match the package to the printing method:<\/strong> inkjet, gravure, letterpress, pad printing, screen printing, and label applications can need different cure and viscosity profiles.<\/li>\n<li><strong>Check image quality with cure:<\/strong> the strongest initiator or monomer route is not helpful if transfer, dot behavior, or film clarity gets worse.<\/li>\n<li><strong>Review adhesion after full cure:<\/strong> a surface-dry print can still fail later if the deeper film remains under-cured.<\/li>\n<li><strong>Test on the final substrate family:<\/strong> film, metal, glass, paper, and specialty surfaces can shift the commercial ranking of the same package quickly.<\/li>\n<\/ul>\n<h3>Referensi produk yang direkomendasikan<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">CHLUMINIT TPO-L<\/a>:<\/strong> A strong low-yellowing reference for LED-oriented UV systems.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">CHLUMINIT 819<\/a>:<\/strong> Useful when a formulation needs stronger absorption and deeper cure support.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-itx-cas-5495-84-1\/\">CHLUMINIT ITX<\/a>:<\/strong> A useful long-wave support route in many printing-ink packages.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/id\/product\/hema-monomer-cas-868-77-9\/\">CHLUMICRYL HEMA<\/a>:<\/strong> A well-known polar monomer reference in adhesion- and reactivity-driven systems.<\/li>\n<\/ul>\n<h3>FAQ untuk pembeli dan formulator<\/h3>\n<p><strong>Why can a UV ink look fine in a lab drawdown but struggle on press?<\/strong><br \/>Because print speed, real film build, substrate handling, and curing energy often expose limitations that are not visible in a slower or simpler test.<\/p>\n<p><strong>Should UV ink materials be selected only by the fastest cure?<\/strong><br \/>No. Commercial selection also needs to protect print sharpness, adhesion, color, and long-run consistency.<\/p>\n<!-- lc-commercial-end -->","protected":false},"excerpt":{"rendered":"<p>The summer is scorching, and many places across the country are very hot and hot. As a chemical practitioner, of course, you must take a rigorous attitude towards sun protection.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-4670","post","type-post","status-publish","format-standard","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to choose sunscreen? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"How to choose sunscreen?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/id\/how-to-choose-sunscreen\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to choose sunscreen? 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