{"id":1596,"date":"2019-05-22T02:47:32","date_gmt":"2019-05-22T02:47:32","guid":{"rendered":"http:\/\/www.meetyoucarbide.com\/single-post-the-3-main-forming-agents-in-production-of-wc-and-their-usage\/"},"modified":"2020-05-04T13:12:08","modified_gmt":"2020-05-04T13:12:08","slug":"the-3-main-forming-agents-in-production-of-wc-and-their-usage","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/3-chinh-hinh-thanh-tac-nhan-trong-san-xuat-cua-wc-va-cach-su-dung-cua-chung\/","title":{"rendered":"3 t\u00e1c nh\u00e2n ch\u00ednh h\u00ecnh th\u00e0nh trong s\u1ea3n xu\u1ea5t WC v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng ch\u00fang"},"content":{"rendered":"
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Cacbua xi m\u0103ng \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb c\u00e1c cacbua kh\u00f4ng h\u00f2a tan c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 n\u00e9n cao, \u0111\u1ed9 c\u1ee9ng cao v\u00e0 m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i cao. B\u1ed9t kh\u00f3 b\u1ecb bi\u1ebfn d\u1ea1ng d\u1ebbo h\u01a1n trong qu\u00e1 tr\u00ecnh \u00e9p. \u0110\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh ch\u1ea5t t\u1ea1o th\u00e0nh b\u1ed9t, c\u01b0\u1eddng \u0111\u1ed9 \u0111\u00f3ng b\u00e1nh \u0111\u01b0\u1ee3c t\u0103ng l\u00ean, v\u00e0 vi\u1ec7c n\u00e9n ch\u1eb7t \u0111\u01b0\u1ee3c t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i, v\u00e0 m\u1ed9t ch\u1ea5t t\u1ea1o h\u00ecnh \u0111\u01b0\u1ee3c th\u00eam v\u00e0o v\u1eadt li\u1ec7u b\u1ed9t tr\u01b0\u1edbc khi t\u1ea1o h\u00ecnh.<\/div>\n
L\u00e0 m\u1ed9t t\u00e1 d\u01b0\u1ee3c trung gian, ch\u1ea5t t\u1ea1o h\u00ecnh ph\u1ea3i \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n trong giai \u0111o\u1ea1n kh\u1eed kh\u00ed, v\u00ec b\u1ea5t k\u1ef3 d\u01b0 l\u01b0\u1ee3ng n\u00e0o s\u1ebd g\u00e2y ra nguy c\u01a1 ch\u1ea5t l\u01b0\u1ee3ng cho s\u1ea3n ph\u1ea9m. Vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m cacbua xi m\u0103ng ch\u1ea5t l\u01b0\u1ee3ng cao ph\u1ea3i ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1ed5ng l\u01b0\u1ee3ng cacbon trong h\u1ee3p kim. M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed5ng h\u00e0m l\u01b0\u1ee3ng cacbon c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m cacbua xi m\u0103ng, nh\u01b0ng \u1ea3nh h\u01b0\u1edfng c\u1ee7a vi\u1ec7c \u00e1p d\u1ee5ng ch\u1ea5t t\u1ea1o h\u00ecnh l\u00ean t\u1ed5ng s\u1ed1 cacbon c\u1ee7a s\u1ea3n ph\u1ea9m l\u00e0 m\u1ed9t kh\u00eda c\u1ea1nh r\u1ea5t quan tr\u1ecdng trong tr\u01b0\u1eddng h\u1ee3p ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh c\u1ee7a nguy\u00ean li\u1ec7u th\u00f4 cacbua vonfram. .<\/div>\n
Do \u0111\u00f3, hi\u1ec7u su\u1ea5t c\u1ee7a ch\u1ea5t t\u1ea1o h\u00ecnh l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a m\u1eabu tr\u1eafng v\u00e0 s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng sau thi\u00eau k\u1ebft.<\/div>\n
Theo kh\u1ea3o s\u00e1t, m\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t cacbua xi m\u0103ng \u0111\u00e3 s\u1eed d\u1ee5ng nh\u1ef1a t\u1ed5ng h\u1ee3p, dextrin, tinh b\u1ed9t, r\u01b0\u1ee3u metylic v\u00e0 xenluloza l\u00e0m ch\u1ea5t \u0111\u00fac trong qu\u00e1 kh\u1ee9. V\u00ed d\u1ee5, \u0110\u00f4ng \u0110\u1ee9c \u0111\u00e3 s\u1eed d\u1ee5ng 48% \u0111\u1ebfn 59% c\u1ee7a ceresin v\u00e0 parafin c\u1ee9ng. M\u1ed9t h\u1ed7n h\u1ee3p v\u1edbi d\u1ea7u parafin. C\u00f4ng ty General Electric c\u1ee7a Hoa K\u1ef3 \u0111\u00e3 s\u1eed d\u1ee5ng tinh b\u1ed9t, cao su arabic v\u00e0 c\u00e1c lo\u1ea1i nh\u1ef1a t\u1ed5ng h\u1ee3p. Ch\u1ea5t x\u01a1 h\u00f2a tan trong n\u01b0\u1edbc v\u00e0 polypropylene decylamine \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf Anh. M\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t c\u0169ng \u0111\u00e3 th\u00eam c\u00e1c ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t.<\/div>\n
Do thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t ti\u00ean ti\u1ebfn v\u00e0 m\u1ee9c \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng h\u00f3a cao, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t cacbua xi m\u0103ng n\u01b0\u1edbc ngo\u00e0i s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb tr\u1ed9n \u0111\u01b0\u1eddng \u1ed1ng, m\u00e1y \u00e9p t\u1ef1 \u0111\u1ed9ng c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 ch\u1ea5t t\u1ea1o cacbua xi m\u0103ng n\u01b0\u1edbc ngo\u00e0i, v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 parafin v\u00e0 PEG. M\u00f4i tr\u01b0\u1eddng m\u00e1y nghi\u1ec1n bi \u0111\u01b0\u1ee3c kh\u1eed kh\u00ed v\u00e0 thi\u00eau k\u1ebft v\u00e0o m\u1ed9t l\u00f2 nung duy nh\u1ea5t v\u1edbi b\u1ea7u kh\u00ed quy\u1ec3n cao su. C\u00f3 r\u1ea5t \u00edt ch\u1ea5t t\u1ea1o keo.<\/div>\n
Hi\u1ec7n nay, c\u00e1c ch\u1ea5t t\u1ea1o h\u00ecnh \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t cacbua xi m\u0103ng trong n\u01b0\u1edbc s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i l\u00e0: cao su, parafin v\u00e0 polyetylen glycol (PEG). T\u00f9y thu\u1ed9c v\u00e0o c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t n\u01b0\u1edbc ngo\u00e0i gi\u1edbi thi\u1ec7u c\u00f4ng ngh\u1ec7, th\u1eddi gian s\u1eed d\u1ee5ng kh\u00e1c nhau gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t gi\u1edbi thi\u1ec7u c\u00f4ng ngh\u1ec7 sandvik th\u01b0\u1eddng s\u1eed d\u1ee5ng PEG l\u00e0m ch\u1ea5t t\u1ea1o h\u00ecnh v\u00e0 s\u1ea5y phun. M\u1ed9t s\u1ed1 s\u1eed d\u1ee5ng parafin l\u00e0m ch\u1ea5t t\u1ea1o h\u00ecnh v\u00e0 c\u0169ng s\u1eed d\u1ee5ng quy tr\u00ecnh s\u1ea5y phun. C\u00e1c doanh nghi\u1ec7p v\u1eeba v\u00e0 nh\u1ecf v\u1ec1 c\u01a1 b\u1ea3n s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 cao su, v\u00e0 c\u00e1c ch\u1ea5t t\u1ea1o h\u00ecnh kh\u00e1c nhau c\u00f3 nh\u1eefng \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang.<\/div>\n

Ch\u1ea5t t\u1ea1o h\u00ecnh cao su<\/h2>\n

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In the late 1950s and early 1960s, the sodium butadiene rubber used in China’s cemented carbide industry was imported from the Soviet Union, and the rubber quality was stable. Later, due to changes in the situation, the use of Lanzhou-made synthetic sodium butadiene rubber was used.<\/div>\n
Do quy tr\u00ecnh c\u00f4ng ngh\u1ec7, thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t v\u00e0 c\u00e1c nguy\u00ean nh\u00e2n kh\u00e1c l\u00e0m cho ch\u1ea5t l\u01b0\u1ee3ng cao su \u1ed5n \u0111\u1ecbnh k\u00e9m. Sau khi cao su natri butadien h\u00f2a tan b\u1eb1ng x\u0103ng, gel nhi\u1ec1u h\u01a1n, dung d\u1ecbch l\u01a1 l\u1eedng, kh\u00f3 l\u1ecdc, h\u00e0m l\u01b0\u1ee3ng tro v\u00e0 h\u00e0m l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t cao, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t b\u00ecnh th\u01b0\u1eddng c\u1ee7a h\u1ee3p kim.<\/div>\n

Dung m\u00f4i cao su c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh t\u1ed1t, c\u00f3 th\u1ec3 n\u00e9n \u0111\u01b0\u1ee3c s\u1ea3n ph\u1ea9m c\u00f3 h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn, v\u00e0 \u0111\u1ed9 n\u00e9n ch\u1eb7t \u00edt c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y ra v\u1ebft n\u1ee9t. Tuy nhi\u00ean, nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 \u0111\u1ed9 tro nhi\u1ec1u, l\u01b0\u1ee3ng cacbon d\u01b0 nhi\u1ec1u, kh\u00f3 ki\u1ec3m so\u00e1t \u0111\u1ed9 ch\u00ednh x\u00e1c cacbon, h\u00fat ch\u00e2n kh\u00f4ng d\u1ec5 d\u00e0ng, ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m kh\u00f4ng \u1ed5n \u0111\u1ecbnh, kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi qu\u00e1 tr\u00ecnh s\u1ea5y phun.<\/p>\n

Ch\u1ea5t t\u1ea1o parafin<\/h2>\n

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Paraffin is refined from petroleum. Paraffin is a mixture of various hydrocarbons. A small amount of liquid “impurities” are present in the form of oil. The solid component is a saturated alkane. The nature of paraffin is, in the final analysis, determined by its chemical composition, whether they are linear, branched or cyclic. Paraffin wax can be classified into: paraffin wax, microcrystalline wax, montan wax, vegetable wax, animal wax, synthetic wax. There are dozens of kinds of total varieties. The molecular weight, structure, properties and uses of each variety are different.<\/div>\n
N\u00f3i chung, s\u00e1p parafin cho cacbua li\u00ean k\u1ebft ch\u1ee7 y\u1ebfu bao g\u1ed3m c\u00e1c parafin b\u00ecnh th\u01b0\u1eddng, c\u00f3 \u00edt ph\u00e2n t\u1eed m\u1ea1ch th\u1eb3ng v\u00e0 m\u1ea1ch th\u1eb3ng v\u00e0 \u00edt hydrocacbon th\u01a1m. Ph\u1ea1m vi tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed 360-540, \u0111i\u1ec3m n\u00f3ng ch\u1ea3y 42-70 \u0111\u1ed9, \u00edt tan trong etanol. S\u00e1p vi tinh th\u1ec3 c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed t\u1eeb 580-700, v\u00e0 h\u1ea7u h\u1ebft l\u00e0 m\u1ed9t ph\u00e2n t\u1eed m\u1ea1ch nh\u00e1nh v\u1edbi nhi\u1ec1u h\u1ee3p ch\u1ea5t hydrocacbon m\u1ea1ch v\u00f2ng. S\u00e1p parafin gi\u00f2n. S\u00e1p vi tinh th\u1ec3 c\u1ee9ng h\u01a1n, d\u1ebbo h\u01a1n, c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y cao h\u01a1n, \u0111\u1ed3ng th\u1eddi c\u00f3 \u0111\u1ed9 k\u1ebft d\u00ednh cao h\u01a1n. N\u00f3 l\u00e0 m\u1ed9t hydrocacbon m\u1ea1ch th\u1eb3ng b\u00e3o h\u00f2a. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bay h\u01a1i ho\u00e0n to\u00e0n \u1edf nhi\u1ec7t \u0111\u1ed9 cao m\u00e0 kh\u00f4ng c\u00f3 c\u1eb7n. N\u00f3 c\u0169ng d\u1ec5 d\u00e0ng lo\u1ea1i b\u1ecf trong ch\u00e2n kh\u00f4ng. Kh\u00f3 kh\u0103n trong vi\u1ec7c ki\u1ec3m so\u00e1t l\u01b0\u1ee3ng carbon \u0111\u01b0\u1ee3c gi\u1ea3m xu\u1ed1ng, \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a l\u01b0\u1ee3ng carbon c\u1ee7a h\u1ee3p kim \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, nh\u01b0ng \u0111\u1ed9 nh\u1edbt th\u1ea5p, ch\u1ea5t n\u00e9n thu \u0111\u01b0\u1ee3c c\u00f3 \u0111\u1ed9 b\u1ec1n th\u1ea5p, h\u1eadu qu\u1ea3 \u0111\u00e0n h\u1ed3i l\u1edbn v\u00e0 d\u1ec5 d\u00e0ng t\u1ea1o ra c\u00e1c v\u1ebft n\u1ee9t trong ph\u1ea7n c\u00f4 \u0111\u1eb7c c\u1ee7a \u1ee9ng su\u1ea5t, v\u00e0 r\u1ea5t kh\u00f3 \u0111\u1ec3 \u00e9p h\u00ecnh d\u1ea1ng. C\u00e1c s\u1ea3n ph\u1ea9m ph\u1ee9c t\u1ea1p h\u01a1n, \u0111\u1ed9 g\u1ecdn nh\u1eb9 d\u1ec5 g\u00e3y v\u00e0 d\u1ec5 r\u01a1i ra g\u00f3c.<\/div>\n

Ch\u1ea5t t\u1ea1o polyme h\u00f2a tan trong n\u01b0\u1edbc<\/h2>\n

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PEG (polyetylen glycol) l\u00e0 m\u1ed9t polyme h\u00f2a tan trong n\u01b0\u1edbc, l\u00e0 m\u1ed9t lo\u1ea1i s\u00e1p t\u1ed5ng h\u1ee3p. \u0110\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch cho t\u1eebng b\u01b0\u1edbc etylen oxit v\u1edbi n\u01b0\u1edbc ho\u1eb7c etylen glicol, kh\u1ed1i l\u01b0\u1ee3ng ph\u00e2n t\u1eed l\u00e0 200-20000, anh \u1ea5y h\u00f2a tan ho\u00e0n to\u00e0n trong n\u01b0\u1edbc, c\u00f3 \u0111\u1ed9 h\u00f2a tan th\u1ea5p (nh\u1ecf h\u01a1n 1%) trong etanol \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng v\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u ch\u1ea5t. N\u00f3 cho th\u1ea5y kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch t\u1ed1t nh\u1ea5t v\u1edbi c\u00e1c ch\u1ea5t c\u00f3 \u0111\u1ed9 ph\u00e2n c\u1ef1c cao, kh\u00f4ng \u0111\u1ed9c h\u1ea1i v\u00e0 kh\u00f4ng g\u00e2y k\u00edch \u1ee9ng. Kh\u1ea3 n\u0103ng \u0111\u1ecbnh d\u1ea1ng c\u1ee7a PEG t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi s\u00e1p parafin, v\u00e0 c\u00f3 \u00edt carbon d\u01b0 h\u01a1n. C\u00f3 th\u1ec3 n\u00f3i \u0111\u00e2y l\u00e0 ch\u1ea5t t\u1ea1o h\u00ecnh an to\u00e0n v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng, th\u00edch h\u1ee3p cho qu\u00e1 tr\u00ecnh s\u1ea5y phun. Tuy nhi\u00ean, PEG h\u1ea5p th\u1ee5 nhi\u1ec1u, v\u00e0 kh\u1ea3 n\u0103ng h\u00fat \u1ea9m gi\u1ea3m khi tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed t\u0103ng l\u00ean. Y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 \u1ea9m v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c l\u00e0 v\u00f4 c\u00f9ng kh\u1eafc nghi\u1ec7t. Sau khi h\u00fat \u1ea9m, b\u1ed9t tr\u1edf n\u00ean c\u1ee9ng v\u00e0 \u00e1p su\u1ea5t \u00e9p t\u0103ng l\u00ean \u0111\u00f2i h\u1ecfi l\u1ef1c \u00e9p c\u1ee7a m\u00e1y \u00e9p ph\u1ea3i cao. Ngo\u00e0i ra, r\u1ea5t kh\u00f3 \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m ph\u1ee9c t\u1ea1p.<\/div>\n
So s\u00e1nh trong th\u1ef1c t\u1ebf s\u1ea3n xu\u1ea5t \u0110\u1ec3 so s\u00e1nh t\u00ednh ch\u1ea5t c\u1ee7a ba ch\u1ea5t t\u1ea1o h\u00ecnh, ba l\u00f4 cao su natri butadien, s\u00e1p parafin v\u00e0 PEG \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t t\u1ea1o h\u00ecnh, v\u00e0 th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n l\u00e0 WC-8% Co. theo c\u00f9ng m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang l\u1ebb v\u00e0 sau \u0111\u00f3 thi\u00eau k\u1ebft b\u1eb1ng c\u00e1ch \u00e9p ch\u00e2n kh\u00f4ng. \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt l\u00fd v\u00e0 kim lo\u1ea1i h\u1ecdc \u0111\u1ec3 so s\u00e1nh.<\/div>\n

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C\u00e1c m\u1eabu s\u1eed d\u1ee5ng parafin v\u00e0 PEG l\u00e0m ch\u1ea5t t\u1ea1o h\u00ecnh \u0111\u00e3 l\u00e0m t\u0103ng \u0111\u1ed9 b\u1ec1n v\u00e0 gi\u1ea3m t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ee3i th\u1ebf r\u1ea5t r\u00f5 r\u00e0ng cho vi\u1ec7c khai th\u00e1c cacbua xi m\u0103ng. \u0110\u1ed3ng th\u1eddi, t\u1eeb ph\u00e2n t\u00edch tr\u1ef1c quan c\u1ee7a \u1ea3nh ch\u1ee5p kim lo\u1ea1i, c\u00e1c pha kim lo\u1ea1i c\u1ee7a parafin v\u00e0 PEG \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n so v\u1edbi ch\u1ea5t t\u1ea1o cao su, b\u1edfi v\u00ec parafin v\u00e0 PEG c\u00f3 \u00edt cacbon d\u01b0 h\u01a1n, v\u00e0 cao su kh\u00f4ng d\u1ec5 b\u1ecb lo\u1ea1i tr\u1eeb, v\u00e0 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn l\u01b0\u1ee3ng carbon d\u01b0 g\u00e2y ra s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a h\u1ea1t c\u1ee5c b\u1ed9. c\u00f3 li\u00ean quan.<\/div>\n

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Do thi\u1ebfu thi\u1ebft b\u1ecb t\u1ea1o h\u1ea1t phun, h\u1ed7n h\u1ee3p parafin v\u00e0 PEG l\u00e0m ch\u1ea5t t\u1ea1o h\u00ecnh \u0111\u01b0\u1ee3c s\u1ea5y ch\u00e2n kh\u00f4ng r\u1ed3i s\u00e0ng, \u0111i\u1ec1u n\u00e0y c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn t\u00ednh ch\u1ea5t \u00e9p c\u1ee7a h\u1ed7n h\u1ee3p, ch\u1eb3ng h\u1ea1n nh\u01b0 s\u1ef1 k\u1ebft t\u1ee5 PEG trong qu\u00e1 tr\u00ecnh s\u1ea5y nguy\u00ean li\u1ec7u. PEG ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u trong v\u1eadt li\u1ec7u g\u00e2y ra s\u1ef1 k\u1ebft t\u1ee5 trong pha tinh th\u1ec3 c\u1ee7a h\u1ee3p kim; s\u00e1p parafin c\u00f3 hi\u1ec7u qu\u1ea3 t\u1ea1o h\u1ea1t k\u00e9m b\u1eb1ng c\u00e1ch lau th\u1ee7 c\u00f4ng. Tuy nhi\u00ean, c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a m\u1eabu v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nh\u00ecn th\u1ea5y trong l\u1ee3i th\u1ebf c\u1ee7a PEG v\u00e0 parafin \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh cao su.<\/div>\n
Trong th\u1ef1c t\u1ebf s\u1ea3n xu\u1ea5t, \u0111\u1ec3 \u0111\u00e1p \u1ee9ng s\u1ea3n xu\u1ea5t quy m\u00f4 l\u1edbn c\u1ee7a m\u00e1y t\u1ef1 \u00e9p, c\u1ea7n ph\u1ea3i t\u0103ng \u00e1p l\u1ef1c \u00e9p v\u00e0 k\u00e9o d\u00e0i th\u1eddi gian gi\u1eef \u0111\u1ec3 tr\u00e1nh s\u1ef1 c\u1ed1 n\u1ee9t ho\u1eb7c r\u01a1i ra kh\u1ecfi parafin s\u1ebd l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 lao \u0111\u1ed9ng. Do \u0111\u00f3, vi\u1ec7c s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng s\u1ea5y phun \u0111\u1ec3 thu \u0111\u01b0\u1ee3c h\u1ed7n h\u1ee3p c\u00f3 \u0111\u1eb7c t\u00ednh ch\u1ea3y tuy\u1ec7t v\u1eddi c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft t\u1ed1t v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/div>\n<\/div>\n<\/div>\n

<\/p>","protected":false},"excerpt":{"rendered":"

Cemented carbide is composed of insoluble carbides with high compressive strength, high hardness and high modulus of elasticity. The powder is more difficult to plastically deform during pressing. In order to improve the powder forming property, the briquetting strength is increased, and the compacting is facilitated, and a forming agent is added to the powder…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"class_list":["post-1596","post","type-post","status-publish","format-standard","hentry","category-materials-weekly"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/1596","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/comments?post=1596"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/1596\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media?parent=1596"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/categories?post=1596"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/tags?post=1596"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}