HMDC (Hexamethylene Diamine Carbamate) – Diamine Crosslinking Agent for FKM & ACM

HMDC Hexamethylene diamine carbamate powder in a 1 kg sample pack for FKM rubber curing
Product Overview

HMDC (Hexamethylene Diamine Carbamate) is a diamine-based crosslinking agent primarily used in the curing of fluoroelastomers (FKM) and polyacrylic (ACM) elastomers. Functionally equivalent to DAIK 1, this curative facilitates a fast curing cycle, which is essential for achieving high tensile strength and improving resistance to compression set in finished rubber goods. As a fine white powder, it is designed for direct incorporation into rubber compounds. Its chemical reactivity ensures efficient crosslinking, leading to vulcanizates with enhanced aging properties and durability in demanding applications. This product is suitable for formulators seeking consistent performance in high-temperature rubber processing.

Common Names
  • Hexamethylene diamine carbamate
  • DAIK 1 (Functional Equivalent)
  • V1 (Functional Equivalent)
  • GP210 (Functional Equivalent)
Technical Specifications
Property Specification
Chemical Composition Hexamethylene diamine carbamate
CAS Number 143-06-6
Physical Form Fine white powder
Odor Slight amine
Purity 98.5% min
Ash Content 0.1% max
Moisture Content 0.5% max
Melting Point 154°C (309.2°F) min
Solubility Soluble in water, insoluble in non-polar solvents

The above specifications are provided for reference purposes only. For precise and up-to-date technical details, please contact our marketing team.

Key Benefits
  • Fast Curing Action: Promotes efficient crosslinking, reducing overall cycle times in the molding process.
  • Improved Compression Set: Enhances the elastomer’s ability to return to its original shape after prolonged exposure to compressive stress and high temperatures.
  • Enhanced Heat Aging: Contributes to the longevity of physical properties in finished parts subjected to elevated service temperatures.
  • Good Physical Properties: Facilitates the development of high tensile strength in the final vulcanizate.
  • Processing Stability: Exhibits excellent storage stability when kept in original, unopened containers under recommended conditions.

*Key Differences between DAIK 1 and DAIK 3: *

  • Processing Safety:DAIK 3 offers superior scorch safety and processing stability compared to DAIK 1. DAIK 1 is faster curing but has the least processing safety.
  • Vulcanizate Properties:DAIK 1 typically yields better compression set resistance and, in some polymers, higher original tensile strength. DAIK 3 provides a good balance of properties with excellent processing characteristics.
Applications
  • FKM Compounding: Used as a primary curative for various types of Viton® A, B, and FKM fluoroelastomers to achieve desired mechanical properties.
  • ACM Compounding: Effective in curing polyacrylic rubber for applications requiring oil and heat resistance.
  • Seals & Gaskets: Suitable for manufacturing O-rings, shaft seals, and gaskets that demand high-temperature compression set resistance.
  • Industrial Rubber Goods: Employed in the production of hoses, linings, and custom-molded parts for the automotive and industrial sectors.
Recommended Dosage

Recommended dosage ranges from 0.5 to 1.5 phr (parts per hundred rubber) , depending on the choice of elastomer, desired cure rate, and target physical properties.

Recommended dosage may vary based on formulation and processing conditions. Users should verify dosage before commercial use.

Available Pack Sizes
  • Standard Pack: 25 kg
  • Repacked: 1 kg (Specially for trial and R&D)

We deliver pan-India and have tie-ups with all major couriers and transporters to ensure timely delivery.

Storage Conditions

Store in a cool, dry place, ideally below 23°C. Keep the container tightly closed when not in use to prevent moisture absorption and contamination. Avoid the formation of dust and ensure good ventilation in handling areas. Use appropriate personal protective equipment (gloves, goggles) to avoid eye and skin contact. Wash thoroughly after handling.

Related Products and Citations
  • Viton® Curing Agents Technical Information (Chemours)
  • Vulcanizing Agent V-1 Technical Datasheet
  • GP-210 & GP-213 Technical Data (Amine Cure Crosslinking Agents)

 DISCLAIMER:
We are independent dealers and are not associated with the manufacturer. The information provided is compiled from official manufacturer datasheets and independent research. Users must evaluate product suitability and applicability before use.

Summary

Lab Line Enterprises offers HMDC (Hexamethylene Diamine Carbamate), a diamine crosslinking agent functionally equivalent to DAIK 1, for the rubber processing industry. As an ISO 9001:2015 certified supplier, we ensure consistent quality in our standard 25 kg packaging. To support formulation development and quality control testing, we also provide smaller pack sizes (1 kg / 5 kg) specifically for R&D and trial purposes. Our supply chain is well-established across major industrial hubs in India, including Mumbai, Ahmedabad, Chennai, Pune, Delhi NCR, and Hyderabad, facilitating reliable deliveries. This product is suitable for manufacturers of FKM and ACM based components requiring fast cure rates and improved compression set. We recommend customers review all technical data and conduct their own trials to confirm suitability for specific applications.

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