Cyclobutane-1,2,3,4-tetracarboxylic dianhydride (CBDA) with CAS number 4415-87-6 is a high - quality chemical product supplied directly from the factory at a low price. The molecular formula of CBDA is C8H2O6, and its molecular weight is approximately 206.10 g/mol. It is a white to off - white crystalline powder. This compound has a relatively high melting point, and its purity can usually reach over 99%. The density of CBDA is about 1.83 g/cm³. It is sparingly soluble in water but soluble in some organic solvents such as dimethylformamide (DMF), dimethyl sulfoxide (DMSO), etc. Strict quality control is implemented during the production process to ensure its excellent chemical and physical properties.
CBDA has a wide range of applications in the chemical and material industries. In the field of polymer synthesis, it can be used as a monomer to produce high - performance polyimides. These polyimides have excellent thermal stability, mechanical properties, and chemical resistance, making them suitable for use in aerospace, electronics, and automotive industries. For example, in the aerospace industry, polyimides made from CBDA can be used to manufacture structural components that need to withstand high temperatures and harsh environments. In the electronics industry, they can be used as insulating materials for printed circuit boards. Additionally, CBDA can also be used as a cross - linking agent in some resin systems, improving the cross - linking density and performance of the resin.
When using CBDA, it is necessary to follow strict safety procedures. First, appropriate personal protective equipment (PPE) such as gloves, goggles, and lab coats should be worn. Since it is a chemical substance, contact with skin, eyes, and clothing should be avoided. When handling CBDA, it should be carried out in a well - ventilated area, preferably in a fume hood. For dissolution, the appropriate organic solvent should be selected according to the specific application. The amount of CBDA added should be accurately measured according to the reaction formula or process requirements. In the reaction process, the reaction temperature, time, and other parameters should be strictly controlled to ensure the smooth progress of the reaction and the quality of the product.
Case 1: Polyimide Film Production
A well - known electronics company used CBDA as a key monomer to produce polyimide films. They first dissolved CBDA in DMF to form a homogeneous solution, and then added an appropriate amount of diamine to carry out a polycondensation reaction. By strictly controlling the reaction temperature and time, they obtained a high - molecular - weight polyimide precursor solution. After casting the solution on a substrate and undergoing a high - temperature imidization process, they got high - quality polyimide films. These films were used as flexible circuit substrates in mobile phones, which greatly improved the flexibility and heat resistance of the circuit boards.
Case 2: High - Temperature Resistant Composite Materials
An aerospace research institution used CBDA as a cross - linking agent in an epoxy resin system. By adding a certain amount of CBDA to the epoxy resin, they significantly improved the cross - linking density and thermal stability of the resin. The composite materials made from this modified epoxy resin were used to manufacture some high - temperature components of aircraft engines, which could withstand high - temperature environments up to 300°C and showed excellent mechanical properties.
If you have any questions about Cyclobutane - 1,2,3,4 - tetracarboxylic dianhydride (CBDA) or need more product information, please feel free to contact us. Our email is info@vivalr.com, and our phone number is (86) 15866781826.
Este é o William, Diretor Executivo da Zhishang Chemical Co., Ltd.
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