{"id":5639,"date":"2026-04-08T22:17:29","date_gmt":"2026-04-08T22:17:29","guid":{"rendered":"https:\/\/www.sungda.com\/vi\/post\/how-to-select-heat-resistant-conveyor-belt-vi"},"modified":"2026-04-08T22:17:29","modified_gmt":"2026-04-08T22:17:29","slug":"how-to-select-heat-resistant-conveyor-belt-vi","status":"publish","type":"post","link":"https:\/\/www.sungda.com\/vi\/index.php\/how-to-select-heat-resistant-conveyor-belt-vi\/","title":{"rendered":"C\u00e1ch Ch\u1ecdn B\u0103ng T\u1ea3i Ch\u1ecbu Nhi\u1ec7t – T\u1eadp \u0110o\u00e0n SUNGDA"},"content":{"rendered":"\n
\"\"<\/figure><\/div>\n\n\n\n

Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t<\/strong><\/p>\n\n\n

Trong t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi b\u0103ng t\u1ea3i ch\u1ecbu t\u1ea3i n\u1eb7ng, “Nhi\u1ec7t” \u0111\u01b0\u1ee3c xem l\u00e0 y\u1ebfu t\u1ed1 kh\u1eafc nghi\u1ec7t v\u00e0 g\u00e2y h\u1ea1i nh\u1ea5t. V\u1eadt li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a, d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng c\u1ee9ng v\u00e0 n\u1ee9t l\u1edbp ph\u1ee7 cao su.<\/p>\n\n\n

“Nhi\u1ec7t” c\u0169ng c\u00f3 t\u00e1c \u0111\u1ed9ng ph\u00e1 h\u1ee7y r\u1ea5t l\u1edbn \u0111\u1ebfn ph\u1ea7n khung b\u0103ng t\u1ea3i v\u00ec n\u00f3 l\u00e0m h\u1ecfng \u0111\u1ed9 b\u00e1m d\u00ednh gi\u1eefa c\u00e1c l\u1edbp ph\u1ee7 tr\u00ean v\u00e0 d\u01b0\u1edbi khung, c\u0169ng nh\u01b0 gi\u1eefa c\u00e1c l\u1edbp b\u00ean trong khung. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 l\u00f5i khung tr\u1edf n\u00ean qu\u00e1 cao, b\u0103ng t\u1ea3i s\u1ebd b\u1eaft \u0111\u1ea7u b\u1ecb t\u00e1ch r\u1eddi, hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ‘bong t\u00e1ch’.<\/p>\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 m\u00e0 m\u1ed9t b\u0103ng t\u1ea3i c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u01b0\u1ee3c xem x\u00e9t theo hai c\u00e1ch \u2014 nhi\u1ec7t \u0111\u1ed9 li\u00ean t\u1ee5c t\u1ed1i \u0111a c\u1ee7a v\u1eadt li\u1ec7u v\u1eadn chuy\u1ec3n v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh t\u1ea1m th\u1eddi t\u1ed1i \u0111a. Hai ph\u00e2n lo\u1ea1i ch\u00ednh v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn tr\u00ean th\u1ecb tr\u01b0\u1eddng b\u0103ng t\u1ea3i l\u00e0 T150, t\u01b0\u01a1ng \u1ee9ng v\u1edbi nhi\u1ec7t \u0111\u1ed9 li\u00ean t\u1ee5c t\u1ed1i \u0111a 150\u00b0C, v\u00e0 T200, d\u00e0nh cho \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t h\u01a1n l\u00ean \u0111\u1ebfn 200\u00b0C.<\/p>\n\n\n

<\/p>\n\n\n

C\u00e1ch ch\u1ecdn b\u0103ng t\u1ea3i ch\u1ecbu nhi\u1ec7t cho nh\u00e0 m\u00e1y xi m\u0103ng.<\/a><\/strong><\/p>\n\n\n

Th\u1eed nghi\u1ec7m ISO 4195<\/strong><\/p>\n\n\n

\u0110\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c nh\u1ea5t kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, c\u00e1c b\u00e0i ki\u1ec3m tra l\u00e3o h\u00f3a gia t\u1ed1c \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch \u0111\u1eb7t m\u1eabu cao su trong l\u00f2 nhi\u1ec7t \u0111\u1ed9 cao trong b\u1ea3y ng\u00e0y. Sau \u0111\u00f3, s\u1ef1 suy gi\u1ea3m t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng. Ba ‘c\u1ea5p’ l\u00e3o h\u00f3a trong ISO 4195 l\u00e0: C\u1ea5p 1 (100\u00b0C), C\u1ea5p 2 (125\u00b0C) v\u00e0 C\u1ea5p 3 (150\u00b0C). \u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, \u00edt nh\u1ea5t m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t (Dunlop) c\u00f2n ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m \u1edf 175\u00b0. C\u00f3 ba y\u1ebfu t\u1ed1 ch\u00ednh c\u1ea7n xem x\u00e9t khi ch\u1ecdn b\u0103ng t\u1ea3i ch\u1ecbu nhi\u1ec7t. C\u00e1c c\u00e2n nh\u1eafc quan tr\u1ecdng nh\u1ea5t l\u00e0 kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 th\u1ef1c t\u1ebf c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n; m\u1ee9c nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh trong kh\u00f4ng gian v\u1eadn h\u00e0nh k\u00edn v\u00e0 chi\u1ec1u d\u00e0i b\u0103ng t\u1ea3i. T\u1ea5t c\u1ea3 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ec1u c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 l\u00e3o h\u00f3a. Th\u00e0nh c\u00f4ng hay th\u1ea5t b\u1ea1i ph\u1ee5 thu\u1ed9c v\u00e0o hai y\u1ebfu t\u1ed1: c\u00f3 d\u1eef li\u1ec7u nhi\u1ec7t \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ec3 cung c\u1ea5p cho nh\u00e0 cung c\u1ea5p b\u0103ng t\u1ea3i ti\u1ec1m n\u0103ng v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng ch\u1ecbu nhi\u1ec7t c\u1ee7a b\u0103ng t\u1ea3i m\u00e0 h\u1ecd cung c\u1ea5p.<\/p>\n\n\n

\"\"<\/figure>\n\n\n\n

(1) L\u1ef1a ch\u1ecdn lo\u1ea1i cao su<\/p>\n\n\n

Cao su ch\u1ecbu nhi\u1ec7t ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi v\u1eadt li\u1ec7u nhi\u1ec7t \u0111\u1ed9 cao, v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a n\u00f3 tr\u1ef1c ti\u1ebfp quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a b\u0103ng t\u1ea3i. B\u0103ng t\u1ea3i ch\u1ecbu nhi\u1ec7t d\u01b0\u1edbi T2 (125 \u0111\u1ed9 C) th\u01b0\u1eddng s\u1eed d\u1ee5ng SBR l\u00e0m cao su ch\u00ednh, v\u00e0 b\u0103ng t\u1ea3i ch\u1ecbu nhi\u1ec7t tr\u00ean T3 (150 \u0111\u1ed9 C) ph\u1ea3i s\u1eed d\u1ee5ng cao su ch\u1ecbu nhi\u1ec7t cao l\u00e0m ch\u00ednh. Theo c\u00e1c kh\u1ea3o s\u00e1t li\u00ean quan, b\u0103ng t\u1ea3i ch\u1ecbu nhi\u1ec7t cao tr\u00ean 150 \u0111\u1ed9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u1ea5t l\u00e0 EPR v\u00e0 IIR, nh\u01b0ng gi\u00e1 IIR r\u1ea5t cao v\u00e0 t\u00ednh n\u0103ng c\u00f4ng ngh\u1ec7 c\u0169ng k\u00e9m. Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 gi\u00e1 c\u1ea3 c\u1ee7a EPR ph\u00f9 h\u1ee3p h\u01a1n, trong \u0111\u00f3 t\u00ednh ch\u1ea5t ph\u00e2n t\u1eed EPM \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u00e2u d\u00e0i \u1edf nhi\u1ec7t \u0111\u1ed9 cao 175 \u0111\u1ed9. Tuy nhi\u00ean, do t\u1ed1c \u0111\u1ed9 l\u01b0u h\u00f3a ch\u1eadm, n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi EPDM \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t s\u1ea3n xu\u1ea5t.<\/p>\n\n\n

(2) L\u1ef1a ch\u1ecdn h\u1ec7 th\u1ed1ng l\u01b0u h\u00f3a b\u0103ng t\u1ea3i H\u1ec7 th\u1ed1ng l\u01b0u h\u00f3a peroxide c\u1ea7n th\u00eam ch\u1ea5t \u0111\u1ed3ng li\u00ean k\u1ebft \u0111\u1ec3 c\u1ea3i thi\u1ec7n h\u01a1n n\u1eefa kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao c\u1ee7a EPR, t\u0103ng hi\u1ec7u qu\u1ea3 li\u00ean k\u1ebft ch\u00e9o v\u00e0 c\u1ea3i thi\u1ec7n t\u00ednh n\u0103ng c\u1ee7a cao su l\u01b0u h\u00f3a. Ch\u1ea5t \u0111\u1ed3ng li\u00ean k\u1ebft c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 \u0111\u1ee9t g\u00e3y chu\u1ed7i propylene trong m\u1ea1ch ch\u00ednh c\u1ee7a qu\u00e1 tr\u00ecnh l\u01b0u h\u00f3a EPM, gi\u1ea3m \u0111\u1ed9 nh\u1edbt c\u1ee7a cao su v\u00e0 c\u1ea3i thi\u1ec7n t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a cao su l\u01b0u h\u00f3a. Ngo\u00e0i ra, \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 l\u01b0u h\u00f3a v\u00e0 t\u00ednh n\u0103ng ch\u1ed1ng r\u00e1ch, l\u01b0u hu\u1ef3nh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ed3ng l\u01b0u h\u00f3a, nh\u01b0ng \u0111\u1ed9 h\u00f2a tan c\u1ee7a l\u01b0u hu\u1ef3nh trong EPDM nh\u1ecf, n\u00ean d\u1ec5 b\u1ecb phun d\u1ea7u v\u00e0 kh\u00f3 s\u1eed d\u1ee5ng. N\u00f3 n\u00ean \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong v\u00f2ng 1,5 ph\u1ea7n.<\/p>\n\n\n

(3) L\u1ef1a ch\u1ecdn h\u1ec7 th\u1ed1ng ch\u1ea5t \u0111\u1ed9n gia c\u01b0\u1eddng EPR l\u00e0 cao su v\u00f4 \u0111\u1ecbnh h\u00ecnh, c\u00f3 \u0111\u1ed9 b\u1ec1n v\u1eadt l\u00fd th\u1ea5p. Ch\u1ec9 v\u1edbi h\u1ec7 th\u1ed1ng ch\u1ea5t \u0111\u1ed9n gia c\u01b0\u1eddng, cao su l\u01b0u h\u00f3a m\u1edbi c\u00f3 th\u1ec3 c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 l\u00fd t\u1ed1t. Carbon \u0111en l\u00e0 ch\u1ea5t gia c\u01b0\u1eddng quan tr\u1ecdng nh\u1ea5t c\u1ee7a EPR. K\u00edch th\u01b0\u1edbc h\u1ea1t carbon \u0111en c\u00e0ng nh\u1ecf, \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a cao su l\u01b0u h\u00f3a c\u00e0ng cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u00e0ng t\u1ed1t. Do \u0111\u00f3, carbon \u0111en N220 \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m h\u1ec7 th\u1ed1ng ch\u1ea5t \u0111\u1ed9n gia c\u01b0\u1eddng.<\/p>\n\n\n

(4) L\u1ef1a ch\u1ecdn ch\u1ea5t l\u00e0m m\u1ec1m v\u00e0 d\u1ebbo h\u00f3a Ch\u1ea5t l\u00e0m m\u1ec1m c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 gi\u00e3n d\u00e0i khi k\u00e9o v\u00e0 kh\u1ea3 n\u0103ng t\u1ef1 d\u00ednh c\u1ee7a EPR, nh\u01b0ng s\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao. D\u1ea7u naphthenic \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t li\u00ean k\u1ebft ch\u00e9o c\u1ee7a peroxide, v\u00e0 d\u1ea7u th\u01a1m l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 kh\u00f3 s\u1eed d\u1ee5ng.<\/p>\n\n\n

C\u00d4NG TY TNHH B\u0102NG T\u1ea2I SUNGDA<\/span><\/strong><\/p>\n\n\n

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Trang web ch\u00ednh th\u1ee9c: www.sungdagroup.com<\/span><\/a><\/p>\n\n\n

Email li\u00ean h\u1ec7: info@sungdagroup.com<\/span><\/a><\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y gi\u1edbi thi\u1ec7u v\u1ec1 b\u0103ng t\u1ea3i ch\u1ecbu nhi\u1ec7t l\u00e0 g\u00ec, ph\u00e2n lo\u1ea1i, ti\u00eau chu\u1ea9n ki\u1ec3m tra v\u00e0 c\u00e1ch l\u1ef1a ch\u1ecdn b\u0103ng t\u1ea3i ch\u1ecbu nhi\u1ec7t.<\/p>\n","protected":false},"author":1,"featured_media":386,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[637],"tags":[698,939,2135],"class_list":["post-5639","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-techinical-news-vi","tag-heat-resistant-conveyor-belt-vi","tag-cement-conveyor-belt-vi","tag-epdm-vi"],"_links":{"self":[{"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/posts\/5639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/comments?post=5639"}],"version-history":[{"count":0,"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/posts\/5639\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/media\/386"}],"wp:attachment":[{"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/media?parent=5639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/categories?post=5639"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sungda.com\/vi\/index.php\/wp-json\/wp\/v2\/tags?post=5639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}