本品是以二硫化二异丙基两原酸酯或十二碳硫醇为调节剂的氯丁二烯聚合物，结晶速度中等，密度1.23，乳白色或米黄色块状物。具有较好的耐热性和高温稳定性。分为通用型和粘接型，通用型可用于制造各类浅色橡胶制品，如密封件、防尘罩、胶辊、衬里、水坝及胶管外层护套等橡胶制品和杂件。粘接型可与CR244混用，调节开放时间。本品类似于美国杜邦公司W型,日本电化公司M-40氯丁橡胶。
执行标准：Q/CHJT.J03.03.04-2022
通用型
项目 | 指标 | |||
门尼粘度 ML（1+4）100℃ | CR2321 | CR2322 | CR2323 | CR2324 |
35-45 | 46-55 | 90-110 | 111-130 | |
门尼焦烧，≥MSt5,min | 11 | 11 | ||
拉伸强度，≥MPa | 12 | 12 | ||
500%定伸应力，MPa | 2-7 | 5-10 | ||
扯断伸长率，≥% | 750 | 550 | ||
挥发份，≤% | 1.5 | 1.5 | ||
粘接型
项目 | 指标 | |
10%甲苯溶液黏度mPa.s | CR 2323A | 500-1500 |
CR 2324A | 1501-2500 | |
CR 2325A | 2501-5000 | |
挥发分质量分数，% ≤ | 1.2 | |
包装：牛皮纸聚丙烯复合袋，净重25kg/袋。
储存：自生产之日起，20℃以下，储存期为一年，20-30℃以下，储存期为半年。
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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