Crosslinking Agent

Crosslinking Agent Manufacturer & Supplier

 

Great Bridge Chemical supplies crosslinking agents for rubber compounding and polymer processing, including TAIC, TAC, and TMPTMA.

These chemicals have different molecular structures and application profiles. TAIC (Triallyl Isocyanurate) and TMPTMA (Trimethylolpropane Trimethacrylate) are used in selected peroxide-cured rubber and polymer systems. TAC (Triallyl Cyanurate) is listed for use as a vulcanization aid or radiation-crosslinking sensitizer in rubber and plastics.

 
 

Product Types & Grades

Organic Peroxides (DCP, BIPB)

Dicumyl Peroxide (DCP, 99% active powder/granule or 40% carrier-bound) and Bis(tert-butyldioxyisopropyl)benzene (BIPB, 96% active or 40% carrier-bound) serve as primary free-radical initiators for EPDM, EVA, PE, and silicone crosslinking, delivering high thermal stability with low odor profiles.

 

Triazine Co-Agents (TAIC & TAC)

Triallyl Isocyanurate (TAIC) and Triallyl Cyanurate (TAC) function as polyfunctional co-agents. Combined with organic peroxides, they accelerate curing speeds, increase modulus, and improve oil and heat resistance in FKM, EPDM, and EVA formulations.

 

Methacrylate Co-Agents (TMPTA & PDM)

Trimethylolpropane Trimethacrylate (TMPTA) acts as a liquid reactive monomer co-agent, boosting cross-linking efficiency and hardness in peroxide-cured NBR, EPDM, and acrylic rubber compounds.

 

 

Technical Specifications

 

The following table provides a quick comparison for purchasing and product identification.

Product

CAS No.

Physical Form

Main Content Specification

Key Quality Parameters

TAIC

1025-15-6

Liquid / crystal

Active content ≥99%

Color, acid value

TAC

101-37-1

White crystal / white liquid

Purity ≥99%

Freezing point, color, density

TMPTMA Liquid

3290-92-4

Clear liquid

Content ≥97%

Water, acid value, color, viscosity

TMPTMA Powder

3290-92-4

White powder

Content ≥60%

Ignition residue

 

Applications

Automotive Seals & Hoses

Peroxide-cured EPDM coolant hoses and weatherstrip profiles requiring low compression set and elevated thermal resistance up to 150 C.

Wire & Cable Insulation

XLPE (cross-linked polyethylene) and EPR (ethylene propylene rubber) power cable jacketing operating under high electrical and thermal stress.

Photovoltaic & Foaming Materials

TAIC and peroxide cross-linking systems for EVA solar cell encapsulation films and microcellular shoe-sole foam compounds.

Industrial Seals & Gaskets

High-durometer FKM and NBR O-rings, hydraulic packings, and oilfield rubber seals requiring chemical resistance and anti-extrusion strength.

 

 

Performance & Quality

Chemical reaction stability governs cross-linking efficiency and processing safety. Peroxide synthesis utilizes controlled oxidation and low-temperature crystallization steps to minimize self-decomposition risks and maintain target active oxygen content. Liquid co-agents like TAIC undergo fractional vacuum distillation to remove light unreacted allyl alcohol fractions, keeping volatile emissions and odor low during high-temperature extrusion.

 

Quality control protocols verify active content via Gas Chromatography (GC) and High-Performance Liquid Chromatography (HPLC). Vulcanization performance is tested using Moving Die Rheometer (MDR 2000) curves to measure scorch time (t10), optimum cure time (t90), and maximum torque (MH) in standard test compounds. Production operations comply with ISO 9001 and ISO 14001 standards, with EU REACH registration and temperature-monitored logistics for thermally sensitive grades.

Crosslinking Agent TAC suppliers

 

Crosslinking Agent TAC factory

 

Packaging & Supply

20 kg or 25 kg PE-lined carton boxes for solid pure organic peroxides (DCP/BIPB).


25 kg paper-plastic bags or fiber drums for 40% carrier-bound peroxide powders.


200 kg steel drums or 1000 kg IBC totes for liquid co-agents (TAIC / TMPTA).


Refrigerated container (reefer) transport provided for products requiring temperature control during ocean transit.


Regional port warehouse facilities maintain controlled safety stock to support contract delivery schedules.

 

FAQ

 

 

Q: Why use organic peroxide crosslinking instead of traditional sulfur vulcanization?

A: Peroxide crosslinking forms carbon-carbon (C-C) bonds within the polymer network, which possess higher bond energy than sulfur-sulfur (S-S) or polysulfidic bonds. This results in superior heat-aging resistance, lower compression set, and zero copper staining.

Q: What is the benefit of adding a co-agent like TAIC to a peroxide curing system?

A: Co-agents contain multiple reactive double bonds that trap free radicals, increasing cross-link density, reducing peroxide consumption, shortening cure time, and preventing polymer chain scission in elastomers like FKM and EPDM.

Q: How do you prevent premature scorching during internal Banbury mixing of peroxide compounds?

A: Scorch prevention relies on selecting a peroxide with an appropriate 1-minute half-life temperature (e.g., BIPB offers higher thermal stability than DCP) and keeping compound mixing dump temperatures below the peroxide decomposition threshold (typically below 110 C to 120 C).

Q: Are your organic peroxide and co-agent products REACH registered for European import?

A: Yes, primary commercial crosslinking agent grades shipped to the European market possess complete REACH registrations and compliant SDS documentation.

Q: What temperature precautions are necessary during shipping and storage?

A: Products must be stored in original unopened packaging in a cool, dry, well-ventilated warehouse away from direct sunlight, open flames, and strong acids/alkalis. Specific peroxides are shipped under temperature-controlled conditions below 30 C.

Q: What quality documentation accompanies each commercial shipment?

A: Each shipment includes a lot-specific Certificate of Analysis (CoA) reporting active assay, active oxygen content, melting/boiling parameters, and moisture levels, alongside GHS Safety Data Sheets (SDS).

 

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Request a Quote for Crosslinking Agents

Looking for TAIC, TAC, or TMPTMA for rubber compounding or polymer processing?
Send Great Bridge Chemical your product identity and application requirements. Our team can help confirm the relevant grade, provide technical documents, and coordinate sample requests.
For an accurate quotation, please include:
Product name: TAIC, TAC, or TMPTMA
CAS number
Required grade and physical form
Target purity or active content
Polymer type and intended application
Key technical specifications
Order quantity and packaging requirements
Destination country and port
Sample and documentation requirements

Contact Great Bridge Chemical
Email: export@greatbridge-chem.com
Tel: +86-530-5399496
WhatsApp: 86 158 0675 1555

With abundant experience, we are one of the most professional crosslinking agent manufacturers and suppliers in China. We warmly welcome you to buy high quality crosslinking agent in stock here and get pricelist from our factory. Good service and reasonable price are available.

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