1、Polycarbonate modified epoxy resins
The modified epoxy resins have a chain branching and/or crosslinking due to carbonate bonding of polycarbonate chain scission products to the epoxy resin. The epoxy resins are useful to make powder coatings with enhanced adhesion to metal and resistance to cathodic disbondment.
2、Journal of Applied Polymer Science
Epoxy resin Epidian 5 cured with triethylene tetramine was modified with hydroxyl-terminated polybutadiene (PB) and polycarbonate (PC). Compositions with different amount of modifiers were obtained and tested for their impact strength, flexural strength, as well as resistance to crack propagation.
3、Solution blending, casting, thermo
Combining epoxy and polycarbonate through blending yields a material that amalgamates the favorable attributes of each polymer.
Study on epoxy resins modified by polycarbonate polyurethanes
In this article, the structure and properties of the epoxy resin (EP) modified by polyurethane (PU) prepolymers were studied. The three types of polyurethane prepolymers, namely,...
Light diffusing and flame
Read Light diffusing and flame-retardant polycarbonate modified by highly efficient and multifunctional organosilica microspheres
Polycarbonate modified epoxy resins
Modified epoxy resins are prepared by the reaction of one or more epoxy resins with polycarbonate resins or oligomers. One or more monoalcohols and/or monophenols can also be used in the modification reaction. The epoxy resins also can be advanced by inclusion of a polyphenol during the reaction.
Preparation and Degradation of Waste Polycarbonate
We report a robust, 100% atom-efficiency strategy for preparing waste polycarbonate (WPC)-derived epoxy resin. To demonstrate the preparation process, we perform a pyridine-catalyzed model reaction between diphenyl carbonate (DPC) and diglycidyl ether of bisphenol A (DGEBA) in a molar ratio of 1:2.
Modification of epoxy resins with thermoplastic segmented polycarbonate
By detailed analysis of determined kinetic parameters, it is concluded that the influence of slow diffusion is more pronounced in the presence of thermoplastic polycarbonate-based polyurethanes,...
改性环氧树脂_百度百科
改性环氧树脂用液体端羧基丁腈橡胶 (CTBN)增韧：一般添加量为10 %，其中CTBN的丙烯腈含量在18-30%较好，其中还可并用30%的二氧化硅，以避免加入CTBN后的强度降低。
Study on epoxy resins modified by polycarbonate polyurethanes
In this article, the structure and properties of the epoxy resin (EP) modified by polyurethane (PU) prepolymers were studied. The three types of polyurethane prepolymers, namely,...
In the field of modern materials science, epoxy resins are renowned for their exceptional mechanical properties, chemical stability, and electrical insulation. their brittleness and hygroscopic nature limit performance in certain applications. To overcome these limitations, researchers have developed polycarbonate (PC)-modified epoxy resins, a novel composite material with superior physical and chemical properties. This article explores the preparation methods, performance characteristics, and industrial and technological application prospects of PC-modified epoxy resins.
Polycarbonate, a thermoplastic resin, boasts excellent chemical resistance, UV stability, and dimensional stability. Combining it with epoxy resin significantly enhances the material’s heat resistance, toughness, and impact resistance. This composite not only inherits the advantages of epoxy resin but also integrates PC’s properties, making it suitable for high-temperature, humid, or high-strength environments.
Preparation Methods
The synthesis of PC-modified epoxy resins typically involves the following steps:
- Raw Material Mixing: Epoxy resin and polycarbonate are mixed at a specific ratio (commonly 70:30 epoxy:PC).
- Homogenization: A high-speed mixer ensures thorough integration of the two components.
- Curing Process: The blended resin is poured into molds and cured at controlled temperatures. Curing time varies based on resin type and conditions.
- Post-Treatment: After curing, samples are removed from molds and processed further (e.g., cutting, polishing).
Performance Characteristics
Key features of PC-modified epoxy resins include:
- Thermal Resistance: Maintains strength and toughness at elevated temperatures due to PC.
- Mechanical Properties: Combines epoxy’s hardness and mechanical strength with PC’s impact resistance and fatigue resistance.
- Chemical Resistance: Enhanced durability against chemicals, suitable for harsh environments.
- Dimensional Stability: Reduced environmentally induced dimensional changes due to PC’s stability.
Application Areas
PC-modified epoxy resins are widely used in diverse fields:
- Electronic Encapsulation: Leverages electrical insulation and antistatic properties for high-frequency device packaging.
- Automotive Manufacturing: Used in engine components and structural parts for improved durability.
- Construction: Employed in bridges, high-rise exterior panels, and load-bearing structures.
- Aerospace: Applied in aircraft engines and spacecraft shells due to heat and corrosion resistance.
As an innovative material, PC-modified epoxy resin improves epoxy performance through PC integration, showing broad application potential. With ongoing technological advancements and cost reductions, this composite is expected to expand its role in global materials science. Further research and optimization will undoubtedly elevate its significance in addressing complex engineering challenges.
