本品是以二硫化二異丙基兩原酸酯或十二碳硫醇為調(diào)節(jié)劑的氯丁二烯聚合物，結(jié)晶速度中等，密度1.23，乳白色或米黃色塊狀物。具有較好的耐熱性和高溫穩(wěn)定性。分為通用型和粘接型，通用型可用于制造各類淺色橡膠制品，如密封件、防塵罩、膠輥、襯里、水壩及膠管外層護套等橡膠制品和雜件。粘接型可與CR244混用，調(diào)節(jié)開放時間。本品類似于美國杜邦公司W(wǎng)型,日本電化公司M-40氯丁橡膠。
執(zhí)行標準：Q/CHJT.J03.03.04-2022
通用型
項目 | 指標 | |||
門尼粘度 ML（1+4）100℃ | CR2321 | CR2322 | CR2323 | CR2324 |
35-45 | 46-55 | 90-110 | 111-130 | |
門尼焦燒，≥MSt5,min | 11 | 11 | ||
拉伸強度，≥MPa | 12 | 12 | ||
500%定伸應(yīng)力，MPa | 2-7 | 5-10 | ||
扯斷伸長率，≥% | 750 | 550 | ||
揮發(fā)份，≤% | 1.5 | 1.5 | ||
粘接型
項目 | 指標 | |
10%甲苯溶液黏度mPa.s | CR 2323A | 500-1500 |
CR 2324A | 1501-2500 | |
CR 2325A | 2501-5000 | |
揮發(fā)分質(zhì)量分數(shù)，% ≤ | 1.2 | |
包裝：牛皮紙聚丙烯復(fù)合袋，凈重25kg/袋。
儲存：自生產(chǎn)之日起，20℃以下，儲存期為一年，20-30℃以下，儲存期為半年。
Polychloroprene Rubber CR232
Description：A xanthogen or dodecyl mercaptan modified polychloroprene rubber with medium crystallization rate.The density is 1.23.It has good heat resistance and high temperature stability. Applied i-n both industrial and adhesive purposes, It is similar to Deka’s M-40 and Du Pont's neoprene W.
Application：Industrial purposes for making light-coloured rubber products , such as seals,dust covers,rubber rollers,liners,rubber dams and hose outer sheath,etc；Adhesive purposes for mixing with CR244 to adjust the open time.
Product Standard：Q/CHJT.J03.03.04-2022
Specification of industrial application:
Item | Index | |||
Mooney Viscosity | CR2321 | CR2322 | CR2323 | CR2324 |
35-45 | 45-55 | 90-110 | 111-130 | |
Mooney Scorch(MSt5, min) | 11 | 11 | ||
Tensile strength，≥MPa | 12 | 12 | ||
Modulus at 500%， MPa | 2-7 | 5-10 | ||
Elongationat break，≥% | 750 | 550 | ||
Volatile matter，≤% | 1.5 | 1.5 | ||
Appearance | milk white chips | |||
Specification of adhesive application：
Item | Index | |
Viscosity in 10% toluene solution，mpa.s | CR 2323A | 500-1500 |
CR 2324A | 1501-2500 | |
CR 2325A | 2501-5000 | |
Volatile，≤% | 1.2 | |
Packing: Packed in compound bags of kraft and polypropylene, 25kg net each.
Shelf Life: One year below 20°C and half a year between 20~30°C
from the date of production.
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