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Cross-linking Agent Component – Rubber and Plastic Product Manufacturing

Component Specifications

Definition

A chemical component that initiates and controls the cross-linking reaction in silicone rubber formulations, creating three-dimensional polymer networks through covalent bonding between polymer chains. This process transforms liquid or semi-solid silicone compounds into durable, elastic rubber materials with enhanced mechanical, thermal, and chemical properties.

Working Principle

Cross-linking agents function by forming chemical bridges between silicone polymer chains through addition or condensation reactions. They typically contain reactive groups (such as hydrosilane, peroxide, or platinum catalysts) that activate under specific temperature, pressure, or time conditions, creating permanent covalent bonds that establish the rubber's final network structure and properties.

Materials

Organic peroxides (dicumyl peroxide, benzoyl peroxide), platinum catalysts, hydrosilane compounds, or tin-based catalysts. Typically supplied as liquids, pastes, or masterbatches with purity levels of 95-99.9%.

Technical Parameters

Shelf Life 6-24 months
Dosage Range 0.5-5.0 phr
Reaction Time 30 seconds to 30 minutes
Active Content 40-100%
Cure Temperature 120-180°C
Decomposition Temperature 100-200°C

Standards

ISO 11357, ISO 37, DIN 53504, ASTM D412

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Cross-linking Agent.

Parent Products

This component is used in the following industrial products

Silicone Rubber

A synthetic elastomer composed of silicone polymers with exceptional temperature resistance, flexibility, and chemical stability.

View Product Details

Engineering Analysis

Risks & Mitigation

Thermal decomposition with gas release
Skin and eye irritation
Incompatibility with certain fillers
Premature curing during storage
Residual catalyst affecting final properties

FMEA Triads

Trigger: Incorrect dosage measurement
Failure: Incomplete curing or over-curing
Mitigation: Implement automated dosing systems with calibration checks and real-time monitoring

Trigger: Storage temperature exceeding limits
Failure: Premature decomposition and reduced effectiveness
Mitigation: Maintain temperature-controlled storage below 25°C with continuous monitoring

Trigger: Contamination with inhibitors
Failure: Delayed or prevented cross-linking reaction
Mitigation: Establish clean handling procedures and material compatibility testing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.1% active content variation, ±2°C temperature control

Test Method

DSC analysis for decomposition temperature, titration for active content, rheometry for cure characteristics

Buyer Feedback

★★★★☆ 4.8 / 5.0 (16 reviews)

"Standard OEM quality for Rubber and Plastic Product Manufacturing applications. The Cross-linking Agent arrived with full certification."

"Great transparency on the Cross-linking Agent components. Essential for our Rubber and Plastic Product Manufacturing supply chain."

"The Cross-linking Agent we sourced perfectly fits our Rubber and Plastic Product Manufacturing production line requirements."

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Frequently Asked Questions

What is the difference between peroxide and platinum-based cross-linking agents?

Peroxide agents create free radicals for thermal curing, while platinum catalysts enable addition curing at lower temperatures with better control and fewer byproducts.

How does cross-linking agent dosage affect silicone rubber properties?

Higher dosage increases cross-link density, improving hardness and heat resistance but reducing elongation; insufficient dosage causes incomplete curing and poor mechanical properties.

What safety precautions are required when handling cross-linking agents?

Use PPE including gloves and eye protection, ensure proper ventilation, store away from heat sources, and follow SDS guidelines due to potential skin irritation and thermal decomposition risks.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Cross-linking Agent