1、改性异佛尔酮二胺固化剂的制备与固化性能研究

运用Gelprof 518树脂行为分析仪对固化过程进行评价分析,对固化样品评价分析,改性固化剂的性能相较于未改性固化剂都有所提高,但性能存在不同,改性IPDA比例为m (NPEL-128)∶m (IPDA)∶m (benzyl alcohol)=9∶46∶45时,反应活性最强。 此研究揭示了不同比例固化剂对环氧树脂固化的影响,为工业过程中固化剂改性提供了思路。

2、Curing kinetics and mechanical properties of epoxy resin/1

In order to prepare fast curing resin matrices of FRP, there have been several literatures on the use of amine curing agents and imidazole derivatives to co-cure epoxy resins.

3、<span style="">改性异佛尔酮二胺固化剂的制备与固化性能

This study reveals the effect of ratios of curing agents on the curing of epoxy resin， and provides ideas for the modification of curing agents in industrial processes.

4、曼尼希改性异佛尔酮二胺环氧固化剂性能研究

单纯的异佛尔酮二胺 (IPDA)与环氧树脂复配, 常温下不能完全固化,固化产物脆性大,很难制得可用于测试的浇注件。而曼尼希反应改性后的IPDA与环氧复配后浇注件测试结构具有较好的力学性能。结果如表3所示。这是因为改性后的IPDA分子中引入了可促进胺基与环氧 ...

5、IPDA Epoxy Curing Agent

This study reveals the effect of ratios of curing agents on the curing of epoxy resin， and provides ideas for the modification of curing agents in industrial processes.

Bisley Epoxy Hardener IPDA

IPDA Product Description: Bisley Epoxy Hardener IPDA is a clear, slightly smelling diamine compound that belongs to the cycloaliphatic group and is derived.

Isophorone Diamine—A Curing Agent for Epoxy Resins: Production

To develop new adhesive compositions, the effect of the chemical nature of the curing agent (linear and cycloaliphatic amines) on the curing kinetics, as well as the thermomechanical and strength characteristics, of epoxy compositions have been explored.

Investigation of curing systems in modified epoxy anticorrosion

Liu [14] et al. studied the effect of the molecular structure of curing agents on the anticorrosive properties of EP coatings by using three curing agents with different molecular structures: diethylenetriamine (DETA), isophorone diamine (IPDA), and m-phenylenediamine (m-PDA) to cure EP coatings.

Maximizing filler content and manufacturing highly thermal conductive

The curing agent used in this study was isophorone diamine (IPDA), a commercially available diamine with a low curing temperature of approximately 80–100 °C as a liquid curing agent.

IPDA in Epoxy Adhesives: High

Discover how IPDA-cured epoxy adhesives deliver superior thermal stability, 40% higher crosslink density, and enhanced mechanical strength for aerospace, automotive, and electronics.

Vacuum Distillation of IPDA Epoxy Curing Agent

Vacuum Distillation of IPDA Epoxy Curing Agent

In modern industrial manufacturing, the curing process of epoxy resins is a critical step. Epoxy resin, an essential thermosetting polymer, forms tough and durable composite materials through curing reactions. IPDA (isocyanurate) epoxy curing agents are key components in achieving these curing reactions. To ensure the performance and quality of the final product, IPDA epoxy curing agents must undergo rigorous processing and quality control. Vacuum distillation is a vital step in this process, as it effectively removes moisture and other volatile impurities from IPDA, thereby enhancing its purity and stability. This article introduces the procedure, principles, and industrial applications of vacuum distillation for IPDA epoxy curing agents.

I. Principles of Vacuum Distillation

Vacuum distillation is a method that separates mixture components by reducing system pressure. During this process, the liquid mixture is heated to evaporation, and the vapor is condensed under low pressure. Since vapor pressure increases with temperature, adjusting pressure controls the evaporation rate. At reduced pressure, the boiling point of the liquid decreases, allowing lower-boiling components to condense before others. This enables the acquisition of highly purified IPDA epoxy curing agents.

II. Operational Steps for Vacuum Distillation

1. Preparation Stage:

   • Vacuum distillation equipment, including the distillation column, condenser, and collection flask, must be prepared. All equipment should be cleaned and sterilized to ensure asepsis and safety.
   • The distillation column is preheated and insulated to facilitate subsequent operations.

2. Feeding Stage:

   • IPDA epoxy curing agent is added to the distillation kettle.
   • Feeding speed and volume must be controlled to avoid excessive foaming or bubbling.
   • Ensure the distillation kettle is sealed to prevent leakage during distillation.

3. Heating Stage:

   • Heat the distillation kettle gradually while monitoring temperature changes.
   • Adjust heating parameters as needed and track liquid levels to maintain stable operation.

4. Vacuum Stage:

   • Once the target temperature is reached, reduce system pressure gradually.
   • Observe liquid levels and distillate composition closely to adjust operational parameters.
   • Stop vacuuming when the distillate reaches the desired composition.

5. Cooling Stage:

   • Cool the vacuum-distilled fraction for collection and storage.
   • Control cooling rates to avoid overcooling or freezing.

6. Collection Stage:

   • Transfer the cooled distillate to collection flasks, filter, and wash.
   • Weigh and record the purified IPDA epoxy curing agent for subsequent analysis and use.

III. Advantages of Vacuum Distillation

1. Purity Enhancement:

   • Removes moisture and volatile impurities, improving IPDA purity. This is crucial for ensuring product quality and performance.

2. Energy Efficiency:

   • Compared to traditional evaporation methods, vacuum distillation reduces energy consumption and lowers production costs.
   • Minimizes solvent use, reducing environmental impact.

3. Productivity Gains:

   • Simplifies operation and enhances process control, boosting efficiency.
   • Reduces material loss and waste, further cutting costs.

Vacuum distillation of IPDA epoxy curing agents is a critical step for ensuring product quality and performance. Through optimized procedures and strict quality control, purity and stability can be significantly improved to meet industrial demands. Future advancements should focus on refining vacuum distillation techniques to better support industrial production.