{"id":5977,"date":"2025-01-16T19:53:48","date_gmt":"2025-01-16T11:53:48","guid":{"rendered":"https:\/\/urexceed.com\/?p=5977"},"modified":"2025-01-16T20:00:02","modified_gmt":"2025-01-16T12:00:02","slug":"polyurethane-so-voi-cac-vat-lieu-giay-khac","status":"publish","type":"post","link":"https:\/\/urexceed.com\/vi\/polyurethane-so-voi-cac-vat-lieu-giay-khac\/","title":{"rendered":"Polyurethane so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u gi\u00e0y kh\u00e1c"},"content":{"rendered":"
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Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p gi\u00e0y d\u00e9p, v\u1eadt li\u1ec7u c\u1ea7n cung c\u1ea5p s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa s\u1ef1 tho\u1ea3i m\u00e1i, \u0111\u1ed9 b\u1ec1n, t\u00ednh linh ho\u1ea1t v\u00e0 hi\u1ec7u su\u1ea5t. Polyurethane (PU) l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn trong s\u1ea3n xu\u1ea5t gi\u00e0y d\u00e9p do t\u00ednh linh ho\u1ea1t, \u0111\u1eb7c t\u00ednh nh\u1eb9 v\u00e0 kh\u1ea3 n\u0103ng \u0111\u00fac th\u00e0nh nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau. Tuy nhi\u00ean, n\u00f3 c\u1ea1nh tranh v\u1edbi c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nh\u01b0 EVA (Ethylene-Vinyl Acetate)<\/strong>, Cao su<\/strong>, Da th\u00fa<\/strong>, PVC (Polyvinyl clorua)<\/strong>, V\u00e0 Nh\u1ef1a nhi\u1ec7t d\u1ebbo \u0111\u00e0n h\u1ed3i (TPE)<\/strong>. M\u1ed7i v\u1eadt li\u1ec7u c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee5 th\u1ec3 t\u00f9y thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng d\u1ef1 \u0111\u1ecbnh, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ebf ngo\u00e0i<\/strong>, ph\u1ea7n tr\u00ean<\/strong>, \u0111\u1ebf gi\u00e0y<\/strong>, V\u00e0 v\u1eadt li\u1ec7u l\u00f3t<\/strong>.<\/p>

B\u1ea3ng so s\u00e1nh v\u1eadt li\u1ec7u:<\/strong><\/h3>
T\u00e0i s\u1ea3n<\/strong><\/th>Polyurethane (PU)<\/strong><\/th>EVA (Ethylene-Vinyl Acetate)<\/strong><\/th>Cao su<\/strong><\/th>Da th\u00fa<\/strong><\/th>PVC (Polyvinyl clorua)<\/strong><\/th>Nh\u1ef1a nhi\u1ec7t d\u1ebbo \u0111\u00e0n h\u1ed3i (TPE)<\/strong><\/th><\/tr><\/thead>
M\u1eadt \u0111\u1ed9 (g\/cm\u00b3)<\/strong><\/td>1.1 \u2013 1.3<\/td>0,92 \u2013 1,0<\/td>1,1 \u2013 1,4<\/td>0,9 \u2013 1,0<\/td>1,3 \u2013 1,4<\/td>0,9 \u2013 1,2<\/td><\/tr>
\u0110\u1ed9 b\u1ec1n k\u00e9o (MPa)<\/strong><\/td>30 \u2013 60<\/td>10 \u2013 30<\/td>20 \u2013 40<\/td>20 \u2013 50<\/td>40 \u2013 60<\/td>15 \u2013 50<\/td><\/tr>
\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t (%)<\/strong><\/td>300 \u2013 800%<\/td>100 \u2013 400%<\/td>200 \u2013 400%<\/td>20 \u2013 50%<\/td>50 \u2013 200%<\/td>100 \u2013 600%<\/td><\/tr>
\u0110\u1ed9 c\u1ee9ng (Shore A)<\/strong><\/td>60 \u2013 95<\/td>50 \u2013 80<\/td>50 \u2013 70<\/td>40 \u2013 70<\/td>60 \u2013 85<\/td>60 \u2013 90<\/td><\/tr>
Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n<\/strong><\/td>Xu\u1ea5t s\u1eafc<\/td>T\u1ed1t<\/td>Xu\u1ea5t s\u1eafc<\/td>V\u1eeba ph\u1ea3i<\/td>Th\u1ea5p \u0111\u1ebfn trung b\u00ecnh<\/td>T\u1ed1t<\/td><\/tr>
Kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp<\/strong><\/td>Cao<\/td>V\u1eeba ph\u1ea3i<\/td>Xu\u1ea5t s\u1eafc<\/td>V\u1eeba ph\u1ea3i<\/td>K\u00e9m \u0111\u1ebfn trung b\u00ecnh<\/td>Cao<\/td><\/tr>
Ch\u1ed1ng n\u01b0\u1edbc<\/strong><\/td>Xu\u1ea5t s\u1eafc<\/td>Xu\u1ea5t s\u1eafc<\/td>T\u1ed1t<\/td>Trung b\u00ecnh \u0111\u1ebfn th\u1ea5p<\/td>Ngh\u00e8o<\/td>T\u1ed1t<\/td><\/tr>
Kh\u00e1ng h\u00f3a ch\u1ea5t<\/strong><\/td>Tuy\u1ec7t v\u1eddi, ch\u1ed1ng l\u1ea1i d\u1ea7u, dung m\u00f4i v\u00e0 axit<\/td>T\u1ed1t<\/td>Trung b\u00ecnh \u0111\u1ebfn xu\u1ea5t s\u1eafc<\/td>Ngh\u00e8o<\/td>Ngh\u00e8o<\/td>Trung b\u00ecnh \u0111\u1ebfn cao<\/td><\/tr>
T\u00ednh linh ho\u1ea1t<\/strong><\/td>Cao, linh ho\u1ea1t \u0111\u1ec3 \u0111\u00fac v\u00e0 t\u1ea1o h\u00ecnh<\/td>Cao<\/td>Trung b\u00ecnh \u0111\u1ebfn th\u1ea5p<\/td>Th\u1ea5p<\/td>Th\u1ea5p<\/td>Cao<\/td><\/tr>
Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t<\/strong><\/td>-40\u00b0C \u0111\u1ebfn 80\u00b0C<\/td>-30\u00b0C \u0111\u1ebfn 80\u00b0C<\/td>-40\u00b0C \u0111\u1ebfn 120\u00b0C<\/td>0\u00b0C \u0111\u1ebfn 80\u00b0C<\/td>-10\u00b0C \u0111\u1ebfn 50\u00b0C<\/td>-20\u00b0C \u0111\u1ebfn 90\u00b0C<\/td><\/tr>
H\u1ea5p th\u1ee5 s\u1ed1c<\/strong><\/td>\u0110\u1ec7m m\u1ec1m m\u1ea1i, tuy\u1ec7t v\u1eddi<\/td>T\u1ed1t<\/td>Trung b\u00ecnh \u0111\u1ebfn cao<\/td>Th\u1ea5p<\/td>Ngh\u00e8o<\/td>T\u1ed1t<\/td><\/tr>
Kh\u1ea3 n\u0103ng tho\u00e1ng kh\u00ed<\/strong><\/td>V\u1eeba ph\u1ea3i<\/td>Cao<\/td>Th\u1ea5p \u0111\u1ebfn trung b\u00ecnh<\/td>Cao<\/td>Th\u1ea5p<\/td>Cao<\/td><\/tr>
Kh\u1ea3 n\u0103ng t\u00e1i ch\u1ebf<\/strong><\/td>Kh\u00f3 t\u00e1i ch\u1ebf<\/td>Cao<\/td>Cao<\/td>Th\u1ea5p<\/td>Trung b\u00ecnh (h\u1ea1n ch\u1ebf)<\/td>Cao<\/td><\/tr>
Tr\u1ecb gi\u00e1<\/strong><\/td>Trung b\u00ecnh \u0111\u1ebfn cao<\/td>Th\u1ea5p \u0111\u1ebfn trung b\u00ecnh<\/td>Th\u1ea5p \u0111\u1ebfn trung b\u00ecnh<\/td>Cao<\/td>Th\u1ea5p \u0111\u1ebfn trung b\u00ecnh<\/td>V\u1eeba ph\u1ea3i<\/td><\/tr>
\u1ee8ng d\u1ee5ng trong gi\u00e0y d\u00e9p<\/strong><\/td>\u0110\u1ebf ngo\u00e0i, \u0111\u1ebf gi\u1eefa, \u0111\u1ebf trong, ph\u1ea7n tr\u00ean<\/td>\u0110\u1ebf gi\u00e0y, \u0111\u1ebf l\u00f3t gi\u00e0y, \u0111\u1ebf gi\u1eefa<\/td>\u0110\u1ebf ngo\u00e0i, \u0111\u1ebf gi\u1eefa<\/td>Ph\u1ea7n tr\u00ean, gi\u00e0y sang tr\u1ecdng<\/td>Gi\u00e0y, d\u00e9p, b\u1ed1t ch\u1ed1ng n\u01b0\u1edbc<\/td>Ph\u1ea7n tr\u00ean, \u0111\u1ebf gi\u1eefa, \u0111\u1ec7m<\/td><\/tr><\/tbody><\/table>

Ph\u00e2n t\u00edch chi ti\u1ebft:<\/strong><\/h3>

1. Polyurethane (PU):<\/strong><\/h4>
  • Thu\u1eadn l\u1ee3i<\/strong>:
    • Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n<\/strong>:PU c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n cao, l\u00e0m cho n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho \u0111\u1ebf ngo\u00e0i<\/strong> V\u00e0 \u0111\u1ebf gi\u1eefa<\/strong> trong gi\u00e0y d\u00e9p. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong gi\u00e0y hi\u1ec7u su\u1ea5t v\u00ec \u0111\u1ed9 b\u1ec1n c\u1ee7a n\u00f3.<\/li>
    • T\u00ednh linh ho\u1ea1t<\/strong>:Polyurethane c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00fac th\u00e0nh nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau, mang l\u1ea1i s\u1ef1 linh ho\u1ea1t trong vi\u1ec7c t\u1ea1o ra \u0111\u1ebf gi\u1eefa<\/strong>, \u0111\u1ebf gi\u00e0y<\/strong>, V\u00e0 ph\u1ea7n tr\u00ean<\/strong> v\u1edbi m\u1eadt \u0111\u1ed9 kh\u00e1c nhau \u0111\u1ec3 t\u1ea1o s\u1ef1 tho\u1ea3i m\u00e1i v\u00e0 h\u1ed7 tr\u1ee3.<\/li>
    • H\u1ea5p th\u1ee5 s\u1ed1c<\/strong>:PU c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ec7m v\u00e0 h\u1ea5p th\u1ee5 s\u1ed1c tuy\u1ec7t v\u1eddi, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh s\u1ef1 l\u1ef1a ch\u1ecdn \u01b0a th\u00edch cho gi\u00e0y th\u1ec3 thao v\u00e0 gi\u00e0y d\u00e9p tho\u1ea3i m\u00e1i<\/strong>.<\/li>
    • Kh\u00e1ng h\u00f3a ch\u1ea5t<\/strong>:PU c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng d\u1ea7u, dung m\u00f4i v\u00e0 axit t\u1ed1t, gi\u00fap t\u0103ng \u0111\u1ed9 b\u1ec1n trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/li>
    • Ch\u1ed1ng n\u01b0\u1edbc<\/strong>:PU c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc cao, \u0111i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 h\u1eefu \u00edch trong gi\u00e0y d\u00e9p ch\u1ed1ng n\u01b0\u1edbc<\/strong> ho\u1eb7c cho gi\u00e0y d\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt<\/strong>.<\/li><\/ul><\/li>
    • Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong>:
      • Tr\u1ecb gi\u00e1<\/strong>:Polyurethane th\u01b0\u1eddng \u0111\u1eaft h\u01a1n c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 EVA ho\u1eb7c cao su, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 khi\u1ebfn n\u00f3 k\u00e9m h\u1ea5p d\u1eabn \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m gi\u00e1 r\u1ebb ho\u1eb7c s\u1ea3n ph\u1ea9m \u0111\u1ea1i ch\u00fang.<\/li>
      • T\u00e1i ch\u1ebf<\/strong>:Polyurethane kh\u00f3 t\u00e1i ch\u1ebf, g\u00e2y ra th\u00e1ch th\u1ee9c v\u1ec1 m\u1eb7t m\u00f4i tr\u01b0\u1eddng.<\/li><\/ul><\/li><\/ul>

        2. EVA (Ethylene Vinyl Acetate):<\/strong><\/h4>
        • Thu\u1eadn l\u1ee3i<\/strong>:
          • Nh\u1eb9<\/strong>: EVA \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u c\u1ef1c k\u1ef3 nh\u1eb9, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng cho \u0111\u1ebf gi\u1eefa<\/strong> V\u00e0 \u0111\u1ebf gi\u00e0y<\/strong> trong gi\u00e0y th\u1ec3 thao khi vi\u1ec7c gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/li>
          • T\u00ednh linh ho\u1ea1t<\/strong>:EVA c\u00f3 \u0111\u1ed9 linh ho\u1ea1t cao, gi\u00fap t\u0103ng s\u1ef1 tho\u1ea3i m\u00e1i khi mang gi\u00e0y v\u00e0 d\u1ec5 d\u00e0ng t\u1ea1o th\u00e0nh nhi\u1ec1u h\u00ecnh d\u1ea1ng v\u00e0 ki\u1ec3u d\u00e1ng kh\u00e1c nhau.<\/li>
          • H\u1ea5p th\u1ee5 s\u1ed1c<\/strong>: EVA c\u00f3 \u0111\u1eb7c t\u00ednh \u0111\u1ec7m tuy\u1ec7t v\u1eddi, cung c\u1ea5p h\u1ea5p th\u1ee5 s\u1ed1c<\/strong> v\u00e0 l\u00e0m cho n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho gi\u00e0y th\u1ec3 thao<\/strong> V\u00e0 gi\u00e0y ch\u1ea1y b\u1ed9<\/strong>.<\/li>
          • Kh\u1ea3 n\u0103ng tho\u00e1ng kh\u00ed<\/strong>: EVA cung c\u1ea5p l\u01b0u th\u00f4ng kh\u00f4ng kh\u00ed t\u1ed1t, g\u00f3p ph\u1ea7n an \u1ee7i<\/strong> V\u00e0 s\u1ee9c kh\u1ecfe b\u00e0n ch\u00e2n<\/strong> b\u1eb1ng c\u00e1ch gi\u1ea3m s\u1ef1 t\u00edch t\u1ee5 \u0111\u1ed9 \u1ea9m.<\/li><\/ul><\/li>
          • Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong>:
            • \u0110\u1ed9 b\u1ec1n<\/strong>: EVA kh\u00f4ng b\u1ec1n b\u1eb1ng c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 polyurethane v\u00e0 cao su, khi\u1ebfn n\u00f3 k\u00e9m l\u00fd t\u01b0\u1edfng h\u01a1n khi s\u1eed d\u1ee5ng l\u00e2u d\u00e0i \u1edf nh\u1eefng khu v\u1ef1c c\u00f3 \u0111\u1ed9 m\u00e0i m\u00f2n cao nh\u01b0 \u0111\u1ebf ngo\u00e0i<\/strong>.<\/li>
            • Kh\u00e1ng h\u00f3a ch\u1ea5t<\/strong>: EVA kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng d\u1ea7u v\u00e0 dung m\u00f4i t\u1ed1t nh\u01b0 PU v\u00e0 c\u00f3 th\u1ec3 b\u1ecb ph\u00e2n h\u1ee7y trong \u0111i\u1ec1u ki\u1ec7n h\u00f3a ch\u1ea5t kh\u1eafc nghi\u1ec7t.<\/li><\/ul><\/li><\/ul>

              3. Cao su:<\/strong><\/h4>
              • Thu\u1eadn l\u1ee3i<\/strong>:
                • Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n<\/strong>: Cao su c\u1ef1c k\u1ef3 b\u1ec1n v\u00e0 ch\u1ed1ng m\u00e0i m\u00f2n, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho \u0111\u1ebf ngo\u00e0i<\/strong> trong gi\u00e0y d\u00e9p ch\u1ecbu l\u1ef1c n\u1eb7ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 gi\u00e0y b\u1ed1t l\u00e0m vi\u1ec7c<\/strong> V\u00e0 gi\u00e0y c\u00f4ng nghi\u1ec7p<\/strong>.<\/li>
                • Kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp<\/strong>: Cao su c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 l\u1ef1c t\u00e1c \u0111\u1ed9ng tuy\u1ec7t v\u1eddi, mang l\u1ea1i kh\u1ea3 n\u0103ng \u0111\u1ec7m v\u00e0 h\u1ed7 tr\u1ee3 tuy\u1ec7t v\u1eddi cho gi\u00e0y d\u00e9p ph\u1ea3i ch\u1ecbu t\u1ea3i n\u1eb7ng ho\u1eb7c \u0111\u1ecba h\u00ecnh g\u1ed3 gh\u1ec1.<\/li>
                • Ch\u1ed1ng n\u01b0\u1edbc<\/strong>: Cao su c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc cao, l\u00e0m cho n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho gi\u00e0y d\u00e9p ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 \u1ee7ng \u0111i m\u01b0a<\/strong> V\u00e0 \u1ee7ng cao su<\/strong>.<\/li><\/ul><\/li>
                • Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong>:
                  • C\u00e2n n\u1eb7ng<\/strong>:Cao su th\u01b0\u1eddng n\u1eb7ng h\u01a1n c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 EVA v\u00e0 PU, \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m \u0111\u1ed1i v\u1edbi gi\u00e0y th\u1ec3 thao ho\u1eb7c gi\u00e0y hi\u1ec7u su\u1ea5t cao \u0111\u00f2i h\u1ecfi ph\u1ea3i nh\u1eb9.<\/li>
                  • T\u00ednh linh ho\u1ea1t<\/strong>:Cao su kh\u00f4ng c\u00f3 t\u00ednh linh ho\u1ea1t nh\u01b0 PU ho\u1eb7c EVA, \u0111i\u1ec1u n\u00e0y h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng n\u00f3 trong c\u00e1c v\u1eadt li\u1ec7u linh ho\u1ea1t ph\u1ea7n tr\u00ean<\/strong> ho\u1eb7c \u0111\u1ebf gi\u00e0y<\/strong>.<\/li>
                  • Kh\u1ea3 n\u0103ng tho\u00e1ng kh\u00ed<\/strong>:Cao su kh\u00f4ng tho\u00e1ng kh\u00ed, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00edch t\u1ee5 \u0111\u1ed9 \u1ea9m v\u00e0 g\u00e2y kh\u00f3 ch\u1ecbu khi mang gi\u00e0y trong th\u1eddi gian d\u00e0i.<\/li><\/ul><\/li><\/ul>

                    4. Da:<\/strong><\/h4>
                    • Thu\u1eadn l\u1ee3i<\/strong>:
                      • \u0110\u1ed9 b\u1ec1n<\/strong>: Da l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u b\u1ec1n ch\u1eafc, c\u00f3 hi\u1ec7u su\u1ea5t l\u00e2u d\u00e0i. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong gi\u00e0y sang tr\u1ecdng<\/strong>, gi\u00e0y d\u00e9p trang tr\u1ecdng<\/strong>, V\u00e0 gi\u00e0y b\u1ed1t cao c\u1ea5p<\/strong>.<\/li>
                      • An \u1ee7i<\/strong>: Da t\u1ef1 nhi\u00ean tho\u00e1ng kh\u00ed<\/strong> v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi h\u00ecnh d\u1ea1ng b\u00e0n ch\u00e2n theo th\u1eddi gian, mang l\u1ea1i s\u1ef1 tho\u1ea3i m\u00e1i v\u00e0 v\u1eeba v\u1eb7n tuy\u1ec7t v\u1eddi.<\/li>
                      • S\u1ef1 h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t th\u1ea9m m\u1ef9<\/strong>: Da mang l\u1ea1i v\u1ebb ngo\u00e0i cao c\u1ea5p v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho gi\u00e0y t\u00e2y<\/strong> V\u00e0 gi\u00e0y d\u00e9p th\u01b0\u1eddng ng\u00e0y cao c\u1ea5p<\/strong>.<\/li><\/ul><\/li>
                      • Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong>:
                        • C\u00e2n n\u1eb7ng<\/strong>: Da n\u1eb7ng h\u01a1n v\u1eadt li\u1ec7u t\u1ed5ng h\u1ee3p, khi\u1ebfn n\u00f3 \u00edt l\u00fd t\u01b0\u1edfng h\u01a1n cho c\u00e1c v\u1eadt li\u1ec7u nh\u1eb9 gi\u00e0y th\u1ec3 thao<\/strong> ho\u1eb7c gi\u00e0y hi\u1ec7u su\u1ea5t<\/strong>.<\/li>
                        • Ch\u1ed1ng n\u01b0\u1edbc<\/strong>: Da c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 n\u01b0\u1edbc tr\u1eeb khi \u0111\u01b0\u1ee3c x\u1eed l\u00fd, \u0111i\u1ec1u n\u00e0y h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng n\u00f3 trong gi\u00e0y d\u00e9p ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc<\/strong>.<\/li>
                        • B\u1ea2O TR\u00cc<\/strong>:Da c\u1ea7n \u0111\u01b0\u1ee3c ch\u0103m s\u00f3c v\u00e0 b\u1ea3o d\u01b0\u1ee1ng th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 gi\u1eef \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng t\u1ed1t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt ho\u1eb7c kh\u1eafc nghi\u1ec7t.<\/li><\/ul><\/li><\/ul>

                          5. Polyvinyl clorua (PVC):<\/strong><\/h4>
                          • Thu\u1eadn l\u1ee3i<\/strong>:
                            • Kh\u00f4ng th\u1ea5m n\u01b0\u1edbc<\/strong>:PVC c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc cao, l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p cho gi\u00e0y ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc<\/strong>, d\u00e9p x\u0103ng \u0111an<\/strong>, V\u00e0 b\u1ed1t<\/strong>.<\/li>
                            • Hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/strong>:PVC l\u00e0 v\u1eadt li\u1ec7u c\u00f3 gi\u00e1 th\u00e0nh th\u1ea5p, l\u00fd t\u01b0\u1edfng cho th\u1ecb tr\u01b0\u1eddng \u0111\u1ea1i ch\u00fang d\u00e9p x\u0103ng \u0111an<\/strong> V\u00e0 \u1ee7ng \u0111i m\u01b0a<\/strong>.<\/li><\/ul><\/li>
                            • Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong>: