{"id":8837,"date":"2025-09-05T10:08:44","date_gmt":"2025-09-05T10:08:44","guid":{"rendered":"https:\/\/changhongchemical.com\/?p=8837"},"modified":"2026-04-27T11:16:00","modified_gmt":"2026-04-27T11:16:00","slug":"what-is-a-photoinitiator","status":"publish","type":"post","link":"https:\/\/changhongchemical.com\/nl\/what-is-a-photoinitiator\/","title":{"rendered":"Wat is een fotoinitiator?"},"content":{"rendered":"<h1><strong>Wat is een fotoinitiator<\/strong><strong>\uff1f<\/strong><\/h1>\n<p>fotoinitiator, ook bekend als (fotosensibilisator) of (fotuithardingsmiddel),<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-8841\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>Deze verbindingen absorberen specifieke golflengten van lichtenergie in het ultraviolette (250-420 nm) of zichtbare (400-800 nm) gebied en genereren reactieve stoffen zoals vrije radicalen of kationen, die vervolgens polymerisatie, crosslinking en uitharding initi\u00ebren. Ze spelen een belangrijke rol in fotocureersystemen en worden veel gebruikt in UV-lijmen, UV-coatings, UV-inkt en gelpolish.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>01 Actieprincipe<\/b><\/strong><\/p>\n<p>Na absorptie van lichtenergie gaan fotoinitiatormoleculen over van de grondtoestand naar een aangeslagen toestand, waarbij ze chemische veranderingen ondergaan via singlet- of triplettoestanden om actieve fragmenten te genereren (zoals vrije radicalen en kationen) die polymerisatie kunnen initi\u00ebren. Op basis van hun mechanisme kunnen ze als volgt worden gecategoriseerd:<\/p>\n<p><strong><b>- Vrije radicale fotoinitiatoren: <\/b><\/strong>Deze genereren vrije radicalen door splitsings- of waterstofonttrekkingsreacties, waardoor vrije radicalen polymerisatie initi\u00ebren.<\/p>\n<p><strong><b>- Kationische fotoinitiatoren: <\/b><\/strong>Na fotolyse genereren ze een sterk protonzuur (zoals een Br\u00f8nsted zuur), waardoor de kationische polymerisatie op gang komt.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>02 Classificatie en typische vertegenwoordigers<\/b><\/strong><\/p>\n<p>Vrije Radicale Fotoinitiatoren:<\/p>\n<p><strong><b>(1) Initiatoren van het splitsingstype<\/b><\/strong><\/p>\n<p>Na absorptie van lichtenergie treedt een Norrish I-reactie op en breekt de binding om vrije radicalen te genereren:<\/p>\n<ul>\n<li><strong><b> 1173 (HMPP): <\/b><\/strong>2-Hydroxy-2-methyl-1-fenylpropanon<\/li>\n<li><strong><b> 184 (HCPK): <\/b><\/strong>1-Hydroxycyclohexylfenylketon<\/li>\n<\/ul>\n<p><strong><b><img decoding=\"async\" class=\"alignnone size-full wp-image-8838\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/184-1173.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/184-1173.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/184-1173-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/184-1173-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/184-1173-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/184-1173-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/184-1173-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/184-1173-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>907: <\/b><\/strong>2-Methyl-2-(4-morfolinyl)-1-[4-(methylthio)fenyl]-1-propanon<\/p>\n<p><strong><b><img decoding=\"async\" class=\"alignnone size-full wp-image-8839\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/937.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/937.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/937-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/937-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/937-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/937-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/937-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/937-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>TPO: <\/b><\/strong>2,4,6-trimethylbenzoyl-difenylfosfineoxide<\/p>\n<p><strong><b><img decoding=\"async\" class=\"alignnone size-full wp-image-8840\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/tpo.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/tpo.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/tpo-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/tpo-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/tpo-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/tpo-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/tpo-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/tpo-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/><a href=\"https:\/\/changhongchemical.com\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">TPO-L<\/a>: <\/b><\/strong>Ethyl 2,4,6-trimethylbenzoylfenylfosfonaat<\/p>\n<p><strong><b>659: <\/b><\/strong>2-Hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)fenyl]-1-propanon<\/p>\n<p>MBF: Methylbenzoylformaat<\/p>\n<p><strong><b>(2) Initiators voor waterstofonttrekking<\/b><\/strong><\/p>\n<p>Genereren vrije radicalen door waterstofonttrekkingsreactie:<\/p>\n<ul>\n<li><strong><b> BP: <\/b><\/strong><a href=\"https:\/\/changhongchemical.com\/product\/photoinitiator-bp-cas-119-61-9\/\">Benzofenon<\/a><\/li>\n<li><strong><b> MBP: <\/b><\/strong>4-methylbenzofenon<\/li>\n<\/ul>\n<p><strong><b>(3) Samengestelde initiator<\/b><\/strong><\/p>\n<ul>\n<li><b><\/b><strong><b>IHT-PI 910: <\/b><\/strong><\/li>\n<\/ul>\n<p>2-dimethylamino-2-benzyl-1-[4-(4-morfolinyl)fenyl]-1-butanon<\/p>\n<ul>\n<li><strong><b> IHT-PI 4265:<\/b><\/strong>50% TPO + 50% 1173<\/li>\n<li><strong><b> IHT-PI 1000:<\/b><\/strong>20% 184 + 80% 1173<\/li>\n<li><strong><b>IHT-PI 500:<\/b><\/strong>50% 184 + 50% BP<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong><b>Kationische fotoinitiatoren:<\/b><\/strong><\/p>\n<p>Fotolyse genereert een superzuur dat polymerisatie van epoxy's, vinylethers en andere materialen initieert:<\/p>\n<ul>\n<li>Ioniumzouten (bijv. I-250)<\/li>\n<li>Sulfoniumzouten (bijv. I-160)<\/li>\n<li>Metalloceenzouten (bijvoorbeeld cumeenferroceniumhexafluorofosfaat)<\/li>\n<li>Organosilanen<\/li>\n<\/ul>\n<p><strong><b>03 Structurele Classificatie Samenvatting<\/b><\/strong><\/p>\n<p>Vrije Radicale Fotoinitiatoren:<\/p>\n<p>- Benzo\u00eb en derivaten (benzo\u00ebethers)<\/p>\n<p>- Benzyls (benzoylbenzofenonen)<\/p>\n<p>- Alkylfenonen (\u03b1-Hydroxyalkylfenonen, \u03b1-Aminoalkylfenonen)<\/p>\n<p>- Acylfosfineoxiden (TPO, enz.)<\/p>\n<p>- Benzofenonen<\/p>\n<p>- Thioxanthonen<\/p>\n<p>Kationische fotoinitiatoren:<\/p>\n<p>- Oniumzouten (Ioniumzouten, Sulfoniumzouten)<\/p>\n<p>- Metaalorganische zouten (ferroceniumzouten)<\/p>\n<p>- Organische silanen<\/p>\n<p><strong><b>04 Toepassingsgebieden<\/b><\/strong><\/p>\n<p>Fotoinitiatoren zijn kerncomponenten van stralingsuithardingstechnologie en worden veel gebruikt in:<\/p>\n<p>UV-coatings: coatings van hout, kunststof en metaal<\/p>\n<p><strong><b><img decoding=\"async\" class=\"alignnone size-full wp-image-8842\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>UV-inkten:<\/b><\/strong>\u00a0Drukkerijen en verpakkingsindustrie<\/p>\n<p><strong><b>UV-lijmen:<\/b><\/strong>\u00a0Elektronica en medische kleefstoffen<\/p>\n<p><strong><b>Gelpolish:<\/b><\/strong>\u00a0UV\/LED-uithardende gelpolish (zoals CHROM\u00c9CLAIR's <a href=\"https:\/\/chromeclair.com\/\">HEMA-vrije gelpolish<\/a>) voor de nail art-industrie, met snelle uitharding, hoge glans en slijtvastheid.<\/p>\n<p><strong><b>Andere lichtuithardende materialen: <\/b><\/strong>3D printen, fotoresist, enz.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>05 Functies en voordelen<\/b><\/strong><\/p>\n<p>Lichtuithardingstechnologie voldoet aan de \"5E\" groene normen:<\/p>\n<ul>\n<li><strong><b> Effici\u00ebnt:<\/b><\/strong>Geneest in seconden<\/li>\n<li><strong><b> Inschakelen:<\/b><\/strong>Toepasbaar op verschillende ondergronden<\/li>\n<li><strong><b> Zuinig: <\/b><\/strong>Laag energieverbruik en hoge productie-effici\u00ebntie<\/li>\n<li><strong><b> Energiebesparend: <\/b><\/strong>Reactie bij kamertemperatuur, geen verwarming nodig<\/li>\n<li><strong><b> Milieuvriendelijk: <\/b><\/strong>Geen VOC-emissies, weinig vervuiling<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>photoinitiator, also known as (photosensitizer) or (photocuring agent), These compounds absorb specific wavelengths of light energy in the ultraviolet (250-420 nm) or visible (400-800 nm) regions, generating reactive species such as free radicals or&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8837","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is a photoinitiator\uff1f<\/title>\n<meta name=\"description\" content=\"photoinitiator, also known as (photosensitizer) or (photocuring agent),These compounds absorb specific wavelengths of light energy in the ultraviolet (250-420 nm) or visible (400-800 nm) regions, generating reactive species such as free radicals or cations, which then initiate polymerization, crosslinking, and curing. 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