681 resin polyester ne mai kama da orthophthalic, yana da ƙarfi sosai, kuma yana da matuƙar amfani wajen cikawa. Ana amfani da sandar Pultruded musamman don ragar gado, sandar feshi da madannin kayan aiki, bayanan martaba da sauransu. An sanya masa kyakkyawan ƙarfe mai ƙarfi na fiber gilashi, saurin jan hankali da sauri. Ana amfani da sandar Pultruded galibi don ragar gado, sandar feshi da madannin kayan aiki da sauran abubuwan da suka dace.
| Ma'aunin Fasaha na Ruwan Guba |
| Abu | Naúrar | darajar | Daidaitacce |
| Bayyanar | | Ruwa mai kauri mai haske | |
| Darajar Acid | mgKOH/g | 16-22 | GB2895 |
| Danko (25℃) | Mpa.S | 420-680 | GB7193 |
| Lokacin Gel | minti | 6-10 | GB7193 |
| Ba Mai Sauƙi ba | % | 63-69 | GB7193 |
| Kwanciyar Hankali (80℃) | h | ≥24 | GB7193 |
| Lura: Lokacin Gel shine 25°C; a cikin wanka mai iska; an ƙara maganin cobalt isocaprylate 0.5 ml da maganin MEKP 0.5ml a cikin resin 50 g |
An yi amfani da sandar ƙarfe mai kyau da aka yi da zare mai gilashi, kuma tana da saurin jan ta. Ana amfani da sandar da aka yi da ƙarfe wajen yin raga, sandar feshi da kuma maƙallan kayan aiki da sauran kayayyakin da suka dace.
| Ƙayyadewa don Halayen Jiki |
| Abu | Naúrar | darajar | Daidaitacce |
| Taurin Barcol ≥ | Barcol | 38 | GB3854 |
| Ƙarfin Taurin Kai ≥ | Mpa | 55 | GB2567 |
| Tsawaita lokacin hutu ≥ | % | 5.0 | GB2567 |
| Ƙarfin Lankwasawa ≥ | Mpa | 73 | GB2567 |
| Ƙarfin tasiri ≥ | KJ/m2 | 10 | GB2567 |
| Zafin juyewar zafi (HDT) ≥ | ℃ | 70 | GB1634.2 |
| Lura: Zafin Muhalli don Gwaji: 23±2°C; danshin da ya dace: 50±5% |