All Ideal Plastic factory's Vespel SP-3 plates adopt imported DuPont original resin powder as raw materials, featuring high purity, zero impurities and excellent processing performance. Adopting professional compression molding process, the finished products achieve precise dimensional control, stable physical properties, and effectively avoid common defects such as delamination, cracking and structural instability of ordinary modified PI plates, reaching international industry-leading quality standards.
Vespel SP-3 plate is a high-performance thermosetting polyimide composite material doped with 15% molybdenum disulfide functional filler. The pure polyimide substrate features a unique rigid imide ring molecular structure, endowing the material with extreme temperature resistance, excellent insulation performance and inherent chemical stability, serving as a core high-end engineering plastic for extreme industrial fields such as aerospace and microelectronics.The addition of 15% molybdenum disulfide is the core technical upgrade of SP-3 grade.
Benefiting from the special layered molecular structure of MoS₂, the material forms a uniform, dense solid lubricating film on the friction surface during operation, realizing durable self-lubrication without additional oil lubrication. The nano-scale molybdenum disulfide sheets are evenly dispersed in the PI matrix, effectively dispersing internal structural stress and comprehensively improving the material’s wear resistance, high-temperature stability and overall mechanical rigidity. This grade shows irreplaceable performance advantages in vacuum and inert gas environments where traditional lubricating materials fail easily.
Products Data
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Product name
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Polyimide SP-3 plate
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Material
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Pure polyimide with 15% molybdenum disulfide filler
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Color
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black
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Width
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600mm, 1000mm
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Thickness
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5mm - 100mm
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Tolerance
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±0.02mm
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sample
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Negotiation
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Minimum order quantity
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1 piece
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Certificates
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ISO9001:2008, REACH, ROHS
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Additional services
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Secondary processing can be provided.
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Unique Performance Characteristics of MoS₂ Filled Vespel SP-3 Plates
Different from graphite-modified SP-21/SP-22 PI plates focused on mechanical toughness and low expansion, Vespel SP-3 relies on molybdenum disulfide modification to form exclusive extreme-environment adaptive performance, especially suitable for vacuum, inert gas, high-radiation and closed-space industrial scenarios:
1. Ultra-wide Cryogenic to High-temperature Resistance Stability
SP-3 thermosetting polyimide material achieves extreme temperature stability in the ultra-wide range from -269°C ultra-low temperature to 400°C high temperature. The molecular structure will not crack, soften or fail under cryogenic freezing or long-term high-temperature baking. Combined with MoS₂ high-temperature lubrication stability, it can maintain continuous and stable friction and mechanical performance in extreme temperature environments, breaking the temperature resistance limit of ordinary lubricating engineering plastics.
2. Ultra-low Surface Adhesion & Oil-free Self-lubricating Property
Vespel SP-3 plate features an ultra-low surface energy of 20–30 mN/m, effectively reducing surface adhesion and material bonding. The stable friction coefficient is maintained at 0.2–0.5. During equipment operation, tiny imide ring fragments form a 50–100nm dense solid lubricating film on the friction surface, which can reduce metal friction power consumption by about 40%. It realizes passive self-lubrication without oil supply, and maintains low wear and long service life in vacuum and inert gas environments where liquid lubricants fail completely.
3. Low-smoke Flame Retardancy for Closed Working Environments
The material has outstanding inherent flame retardancy. When encountering open fire, it quickly forms a dense protective char layer on the surface to isolate oxygen and heat flow, blocking flame spread. Its smoke density is lower than 50 (NBS standard), far superior to most ordinary engineering plastics. With low smoke and non-toxic characteristics, it is highly suitable for closed working spaces such as aerospace cabins, railway equipment and enclosed mechanical cabins with strict fire safety requirements.
4. Excellent Hydrolysis Resistance & Long-term Structural Stability
Benefiting from the rigid aromatic ring and stable imide group conjugated structure, SP-3 plate forms a physical barrier against water molecule penetration. The internal hydrogen bond energy absorption network further inhibits molecular hydrolysis reaction, effectively resisting material aging, cracking and performance attenuation caused by humid and hot environments. It maintains long-term structural stability in high-humidity working conditions and solves the hydrolysis failure problem of ordinary plastic parts.
5. Precise Chemical Inertness & Targeted Corrosion Resistance
Vespel SP-3 plate has precise and stable chemical inertness, resisting erosion of most conventional industrial media including acids, esters, ketones, aldehydes, phenols, aliphatic hydrocarbons, aromatic hydrocarbons and chlorinated hydrocarbons. It is widely applicable to conventional chemical and petroleum working environments. Meanwhile, the material has clear chemical adaptability boundaries, unstable against strong oxidizing media such as oxidizing acid, concentrated sulfuric acid, aqua regia and hydrogen peroxide, which facilitates accurate industrial scenario matching and avoids misuse failure.
6. Superior Radiation Resistance for Extreme Radiation Scenarios
The material has excellent resistance to gamma ray, neutron radiation, electron beam and ultraviolet radiation. Even in long-term high-intensity radiation environments, the overall performance attenuation is less than 10%, with stable molecular structure and no aging or brittle failure. It is an ideal structural and protective material for high-radiation industrial and aerospace equipment.
Diversified Industrial Application Fields & Working Scenarios
Positioned for vacuum, inert gas and extreme harsh environments, Vespel SP-3 molybdenum disulfide modified polyimide plates are widely used in high-end precision industrial fields with strict requirements for lubrication, flame retardancy, radiation resistance and temperature resistance:
Aerospace Industry: Vacuum equipment accessories, cabin flame-retardant structural parts, anti-radiation and high-temperature resistant precision components
Power Industry: High-temperature insulating parts, radiation-resistant protective accessories, stable friction structural components for power equipment
Automotive Industry: High-temperature wear-resistant parts, flame-retardant safety structural accessories and self-lubricating transmission components
Mechanical Equipment: Vacuum mechanical friction parts, oil-free self-lubricating accessories, long-life wear-resistant structural plates
Chemical & Petroleum Industry: Conventional medium corrosion-resistant equipment parts, high-temperature stable supporting components for petrochemical machinery
Railway & Mining Industry: Flame-retardant, low-smoke and wear-resistant equipment accessories, stable structural parts for harsh working conditions
Power Industry
Automotive Industry
Machinery Equipment
Chemical and Petroleum Industry
Aerospace Industry
Railway and Mining
Factory Manufacturing Strength & Core Service Advantages
Guangzhou Ideal Plastic is a professional manufacturer specializing in customized production of Vespel SP-3 molybdenum disulfide modified polyimide plates. Adopting imported DuPont high-purity resin raw materials and mature compression molding process, we ensure finished products with precise size, uniform structure, no delamination and no cracking, achieving stable and reliable physical and chemical properties.
Strict Full-process Quality Inspection: Equipped with professional laboratory and advanced testing equipment, we implement full-link quality supervision from raw material incoming inspection, formula proportioning, compression molding to finished product delivery. Every batch of products undergoes rigorous performance testing to meet industrial standard requirements.
Imported Raw Material Guarantee: All SP-3 plate raw materials adopt original DuPont resin powder with high purity and stable performance, effectively avoiding performance instability caused by impurity raw materials and ensuring long-term durability of finished parts.
Professional Molding & Processing Technology: Mature compression molding process ensures high dimensional accuracy and structural compactness of products. Support one-stop secondary precision processing to meet customers’ personalized customization needs of finished parts.
Complete Qualification Certification: The factory passes ISO9001 quality management system certification, and products are equipped with CE, RoHS, REACH, SGS and other authoritative test reports, complying with global industrial export standards.
Flexible Procurement & After-sales Service: Support 1-piece ultra-low threshold trial order and free sample testing. Stable inventory and efficient production cycle ensure timely delivery. Professional after-sales team provides targeted problem-solving support for product usage and quality problems.
FAQs
Q1: What is the core difference between Vespel SP-3 and SP-21/SP-22 PI plates?
A: Vespel SP-3 adopts 15% molybdenum disulfide modification, while SP-21/SP-22 are graphite-filled grades. SP-21 focuses on mechanical toughness and creep resistance, SP-22 focuses on ultra-low thermal expansion, whereas SP-3 is exclusively optimized forvacuum and inert gas environments. It features oil-free self-lubrication, low smoke flame retardancy and radiation resistance, solving the failure problem of graphite materials in vacuum extreme environments, which is its unique core advantage.
Q2: What raw materials are used for your SP-3 plates?
A: Our Vespel SP-3 plates adopt imported original DuPont polyimide resin powder as the base material, matched with high-purity molybdenum disulfide filler. The raw materials are free of impurities, with stable formula ratio. Adopting precision compression molding process, the finished products have uniform internal structure, no delamination or cracking, and far more stable overall performance than ordinary domestic recycled material products.
Q3: Can I get free SP-3 plate samples for performance verification?
A: We provide negotiable free sample services for in-stock standard Vespel SP-3 plates for customer industrial performance testing. Customers only need to bear the freight cost. All bulk products strictly follow sample specifications, material ratio and performance indicators to ensure zero deviation between trial samples and mass delivery.
Q4: What certifications and test reports can you provide?
A: Our factory has passed ISO9001:2008 quality management system certification. All Vespel SP-3 finished plates can provide authoritative third-party test reports including SGS, CE and RoHS, and fully comply with REACH and EN71 international environmental protection standards, meeting global market access and customer inspection requirements.
Q5: What is your payment and delivery process?
A: We adopt standardized industrial payment terms: arrange production after receiving the pre-production deposit, and complete the balance payment before shipment packaging. We support payment via Hong Kong HSBC account and can cooperate with customer designated freight forwarders to complete the delivery process, with flexible and transparent transaction procedures.
Q6: What is your after-sales return and exchange policy?
A: For product quality problems, dimensional tolerance errors and factory processing defects that affect normal assembly and use, we provide free replacement or full refund services and bear all related logistics costs after verification. For non-quality problems such as customer mis-ordering and unused residual inventory returns, we support returns and exchanges for intact and resellable products, with customers undertaking round-trip freight fees.
Custom Processing Solution & Bulk Order Cooperation Inquiry
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