用 途 ：JN859,2,3- 二甲基-2,3二苯基丁烷，屬碳系自由基引發(fā)劑，具有特殊的結(jié)構(gòu)，相應(yīng)季碳原子間的C-C 鍵不穩(wěn)定，容易離解而形成自由基，該產(chǎn)品是新型高 分子材料添加劑，可用作為高分子材料的阻燃增效協(xié)和劑和聚合物交聯(lián)、接枝共聚的催化劑或引發(fā)劑，廣泛用于聚烯烴、聚丙烯酸酯、聚碳酸酯、聚醚等各種高 分子材料的改性。
由于該引發(fā)劑不含氧，加工后聚合物抗老化和抗氧化能力強，與過氧化物、偶氮化合物等一般的自由基引發(fā)劑相比穩(wěn)定性高，使用安全。
JN859 分解溫度較高，230℃, 半衰期越30min ,在200℃以上使用，主要用于需較高溫度的聚合物交聯(lián)或接枝反應(yīng)。
JN859 作為高分子材料的協(xié)效阻燃劑，可以減少阻燃劑的使用量，減小阻燃劑對聚合物性能的影響，并賦予高分子材料阻燃性能，如在溴系阻燃體系中可以代 替三氧化二銻增加阻燃效果，在減少阻燃劑用量的同時，增加塑料的物理機械性能。
Uses: JN859,2,3-Dimethyl-2,3-diphenylbutane,a carbon-based free radical initiator,has a special sructure,the C-C bond between the corresponding quaternary carbon atomsis unstable,and it is easy to disociate to form free adicals.Itis a new type of polymer material additive, which can be used as a flame retardant synergistic synergist for polymer materials and a catalyst or initiator for polymer crosslinking and graft copolymerization.It is widely used in polyolefins,polyacrylates, polycarbonates,polyethers Modification ofvarious polymer materials.
Because the initiator does not contain oxygen,the polymer has strong anti-aging and anti-oxidation ability after processing,has high stability compared with general free radical initiators such as peroxides and azo compounds.
JN859 has a high decomposition temperature,230℃, the longer half-life is 30min,it is used above 200℃,mainly used for polymer crosslinking or grafting reaction that requires higher temperature.
序號(Number) | 項目(Property) | 參數(shù)(Parameter) |
1 | 外觀(Appearance) | 白色至黃色粉末 (White or lightyellow Crystalline Powder) |
2 密度(density) 0.95g/cm3 |
3 | 沸點(boiling point) | 306.1°℃/760mmHg |
4 熔點(melting point) | 90-110℃ |
5 | 閃點(Flash point) | 142.7℃ |
6 | 折射率(refractive index) | n20/D1.5531(23℃) |
7 | 蒸汽壓(vapor pressure) | 0.00143mmHg25℃ |
關(guān)鍵字： 交聯(lián)劑;聯(lián)枯;2,3-Dimethyl-2,3-dip;1889-67-4;C18H22;