SILICONE RESIN FOR PLASTICS & RUBBER - Silicone Resin Factory&supplier
Silicone Resin
Everything you need to know about our products and company
Silicone resins significantly enhance plastic and rubber products through their unique cross-linking capabilities and surface modification properties. These high-performance additives improve thermal stability, weather resistance, and processing characteristics across various polymer systems.
Meeting international industry standards, silicone resins offer manufacturers a reliable solution for developing high-performance plastic and rubber products with improved durability and processing efficiency.
Basic Product Information
Chemical Properties
High Si-O bond energy enables long-term resistance to 200–300°C and short-term tolerance above 350°C, significantly enhancing the heat resistance of plastics and rubbers.
Thermal-oxidative resistance prevents degradation under high-temperature conditions.
Resists acids, alkalis, oils, and other corrosive chemicals, protecting substrates from environmental damage.
Surface tension: <25 mN/m, providing excellent hydrophobicity and anti-adhesion properties (e.g., prevents staining or fouling).
Contains reactive groups (e.g., hydroxyl, vinyl) for crosslinking with polymer chains (plastics/rubbers), optimizing mechanical and thermal performance.
Physical Properties
Available in liquid, powder, or granular forms, facilitating blending with plastics (e.g., PP, PC, ABS) and rubbers (e.g., silicone rubber, EPDM).
Exhibits strong compatibility with diverse polymer matrices, ensuring uniform dispersion and interfacial adhesion.
Enhances flexibility (e.g., for soft-touch applications), wear resistance (e.g., industrial seals), or hardness (e.g., structural components) based on formulation design.
Product Functions
Significantly improves high-temperature performance of plastics and rubbers, preventing deformation or degradation at elevated temperatures (stable up to 200–300°C).
Imparts hydrophobicity (water contact angle >120°) and anti-adhesion characteristics, reducing surface contamination and wear.
Reduces brittleness in plastics (e.g., ↑ impact resistance) and enhances elastic recovery rate in rubbers (e.g., EPDM, silicone rubber).
Improves weather resistance (UV, moisture) and anti-aging performance, ensuring long-term durability in harsh environments.
Applications
Applications: Automotive engine covers, electronic housings, industrial components.
Key Benefit: Maintains structural integrity at 200–300°C.
Applications: Kitchenware, food packaging, medical containers.
Compliance: Meets FDA standards for safety and non-toxicity.
Applications: Home appliance panels, decorative materials, automotive trims.
Feature: Enhances surface smoothness and aesthetic appeal.
Applications: Seals, gaskets, industrial hoses.
Performance: Resists swelling/degradation from oils and fuels (per ASTM D471).
Applications: Outdoor cable sheaths, automotive tires, roofing membranes.
Advantage: Withstands UV, ozone, and extreme temperatures (tested per ISO 4892).
Applications: IV tubes, surgical gloves, implantable devices.
Certification: Complies with ISO 10993 biocompatibility standards.
Core Advantages
| Advantage | Technical Parameters | Industry Value |
| High-Temperature Resistance | Long-term stability at 300°C, short-term tolerance up to 350°C | Reliable material for automotive and electronics applications in extreme heat environments. |
| Hydrophobic & Anti-Adhesion | Water contact angle ≥110° | Surface optimization for food packaging and medical devices to prevent contamination. |
| Enhanced Flexibility | 30-50% increase in elongation at break | Solves brittleness in plastics, expanding applications in flexible components and dynamic seals. |
| Chemical Resistance | Resists oils, acids, and alkalis (no degradation after 168h exposure) | Long-term protection for industrial seals and chemical processing equipment. |
| Eco-Friendliness | Complies with FDA and RoHS standards | Green solution for food-contact and medical-grade materials, meeting global safety mandates. |
Market Overview & Key Drivers
Silicone resin applications in plastics and rubber: $1.8–2.2 billion (30–35% of the total silicone resin market).
Growth Rate: Expected 7–9% CAGR (2023–2030), driven by innovation in EVs, healthcare, and electronics, outperforming traditional plastics/rubber industries (3–4% CAGR).
Plastic Modification: 50% (high-temperature engineering plastics, transparent plastics, flame-retardant plastics).
Rubber Processing: 40% (silicone rubber, specialty rubbers like fluorosilicone).
Adhesives & Sealants: 10% (silicone resins as bonding or sealing enhancers).
Asia-Pacific Dominance: China holds 40% share, leveraging electronics and automotive supply chains.
EU/US Premiumization: High-value products (e.g., biocompatible resins) driven by medical and aerospace demands.
Heat-Resistant Plastics:
Blending silicone resin with PEEK or PPS raises long-term service temperatures from 200°C to >250°C (e.g., automotive turbocharger ducts, electronic connectors).
Transparent Plastic Alternatives:
Silicone resin replaces PC in LED lenses, achieving >92% light transmittance and UV resistance (2–3x lifespan).
Case: Shin-Etsu’s KJR series (2x PC’s price but 15% annual market share growth).
Flame Retardant Synergists:
Phenyl silicone resins + phosphate esters enable UL94 V-0 flame retardancy in ABS with 5–10% dosage.
Market: Silicones account for 12% of global flame-retardant additives ($250 million).
Surface Lubricants:
Silicone resin micropowder (1–5 μm) reduces friction coefficient by 40% in gears and sliders.
High-Strength Silicone Rubber:
Vinyl silicone resin + SiO₂ nanoparticles boosts tensile strength from 5 MPa to 12 MPa (medical catheters, automotive seals).
Conductive Silicone Rubber:
CNT-filled silicone rubber with tunable resistivity (10³–10⁶ Ω·cm) for EMI shielding gaskets (20% annual demand growth).
Weather Resistance:
Adding 2–5% silicone resin to EPDM extends outdoor lifespan from 5 to 10 years (e.g., roofing membranes).
Low-Temperature Elastomers:
Silicone-modified ACM rubber remains flexible at -50°C (Arctic equipment seals, 50%+ price premium).
Battery Seals: Silicone-modified rubber resists electrolyte corrosion (0.5–1 kg/vehicle, driving 12,000-ton annual demand by 2025).
Lightweight Plastics: Silicone-reinforced PA66 for EV charger housings (20% weight reduction + flame retardancy).
Thermal Pads: Silicone-based materials with 5–10 W/m·K thermal conductivity for 5G base stations (25% annual market growth).
Experimental Data & Case Studies
Experimental Data
| Test Item | Test Conditions | Results | Benchmark |
| Heat Resistance | 250°C × 100h thermal aging | Tensile strength retention >90% | Unmodified PP plastic: 50% strength loss |
| Hydrophobicity | Water contact angle test | 115° (Superhydrophobic) | Unmodified plastic: 80° |
| Wear Resistance | Taber abrasion test (1000 cycles) | Weight loss <0.5% | Regular rubber: 2% weight loss |
Case Studies
Manufacturing Processes, Core Technologies, and Precautions
Core Processes and Technologies in Plastic Modification
By synchronously polymerizing silicone monomers (e.g., D4 octamethylcyclotetrasiloxane) with polymer matrices (e.g., PP, PC) in reactors, forming an interpenetrating network (IPN) structure. Key technologies include:
Catalyst Selection: Use bimetallic cyanide complex catalysts to control silicone phase size within 100–500 nm.
Phase Interface Control: Introduce grafting agents (e.g., maleic anhydride, MAH) to create active sites on polyolefin molecular chains.
For sol-gel synthesis of silicone/SiO₂ hybrid materials:
Precursors: Methyltrimethoxysilane (MTMS) and tetraethyl orthosilicate (TEOS) mixed at a 3:1 ratio.
Hydrolysis pH controlled at 4.5–5.5 to form nanoparticles of 20–50 nm.
Twin-screw extrusion for melt blending with plastics, enabling nanoparticle alignment.
Silicone coating treatment for plastic surfaces:
Plasma pretreatment (power: 100–200 W, duration: 30–60 s).
Spray-coating fluorosilicone resin solution (solid content: 15%–20%).
UV curing (wavelength: 365 nm, dose: 300–500 mJ/cm²).
Key Technological Breakthroughs in Rubber Processing
For thermoplastic vulcanizate (TPV) production:
Silicone resin/EPDM blended at 40:60 ratio in an internal mixer.
Dicumyl peroxide (DCP) dosage: 1.2–1.5 phr; vulcanization temperature: 170–180°C.
Shear rate controlled at 100–150 s⁻¹ to form 1–3 μm silicone dispersion phases.
Novel process features:
Replace 30% petrochemical feedstock with castor oil-derived diols.
Enzyme-catalyzed polycondensation using lipase Novozym 435.
Molecular weight distribution controlled within 1.8–2.2.
Key steps for conductive silicone rubber:
Multilevel filler blending: 1%–2% CNT + 15%–20% carbon black (CB).
Silicone resin pre-grafting: Modified with vinyltriethoxysilane (VTES).
Electric field-induced alignment (field strength: 1–2 kV/mm, duration: 5–10 min).
Precautions
Plastic modification: 180–250°C
Rubber modification: 120–180°C
Packaging & Ordering
Packaging: 200kg/1000kg plastic drums (customizable).
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