PTFE المعزز بالزجاج

Glass Filled PTFE (15% or 25%) incorporates high-quality glass fibers into the Teflon matrix to significantly improve its mechanical properties. This reinforced grade drastically reduces "cold flow" (creep) and increases compressive strength, making it much more reliable than virgin PTFE for high-load applications. Jucheng Precision specializes in the precision CNC machining of Glass Filled PTFE, utilizing diamond-coated tooling to overcome its abrasive nature. We deliver robust valve seats, gaskets, and industrial bearings that retain the exceptional chemical resistance of PTFE while providing the structural integrity required for high-pressure fluid systems and heavy machinery.

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أنواع مواد PTFE / التفلون

الدرجة	الاسم الشائع	الخصائص الرئيسية	التطبيقات النموذجية
PTFE المعزز بالزجاج	Reinforced Teflon (15%/25%)	Significantly reduced “cold flow” (creep). Higher compressive strength and wear resistance. Off-white/Tan color.	Valve seats, gaskets, high-load bearings, bridge expansion plates.
PTFE البكر	نقي غير معزز	Lowest friction and highest purity. Pure white. FDA compliant.	مكونات طبية، حشوات كيميائية، عوازل كهربائية.
PTFE المعزز بالبرونز	درجة المحامل	Added bronze for maximum wear life and thermal conductivity. Best for heavy-duty sliding.	Hydraulic cylinder guides, piston rings.

Glass Filled PTFE Machining Capabilities

القدرة	الوصف الفني	ميزة Jucheng
Abrasive-Resistant Turning	Glass fibers are abrasive to tools. We utilize specialized PCD (Diamond) or CVD-coated carbide inserts.	Ensures dimensional consistency over long production runs by preventing tool blunting and “size drift” on critical seal diameters.
Precision Valve Seat Milling	Milling complex sealing faces and spherical radii for industrial valve seats.	Our 5-axis machines achieve +/- 0.02mm accuracy, ensuring a perfect leak-proof seal against metal balls or butterfly gates.
Tight-Tolerance Boring	Boring internal diameters for high-load bushings with exceptional surface finish (Ra 0.8μm).	Jucheng’s rigid tool setups prevent the vibration-induced “chatter” marks often seen when machining reinforced polymers.
Custom Seal Profiling	CNC turning intricate lip profiles for reinforced gaskets that must operate under constant pressure.	Leveraging the stability of glass-filled stock, we produce sharp, crisp lip edges that outperform virgin PTFE in high-stress assemblies.

Fabrication Guidelines for Glass Filled PTFE

إدارة الكشط:
The 15% or 25% glass fiber content acts like a grinding wheel on standard tooling. نصيحة: We frequently inspect cutting edges under magnification to ensure the fibers are being sheared rather than torn, which ensures a smooth finish.

Creep Resistance Advantage:
Adding glass fiber reduces “cold flow” by up to 50% compared to virgin PTFE. نصيحة: This allows for tighter initial clearances in bearing designs, as the part will not deform as much under mechanical load.

الاستقرار الأبعادي:
Reinforced PTFE has a lower coefficient of thermal expansion than virgin material. نصيحة: This makes it easier to hold tight tolerances across varying workshop temperatures, though temperature control is still mandatory.

Non-Food Contact:
Unlike virgin PTFE, glass-filled grades are generally not used for direct food contact due to the fibers. نصيحة: We recommend this material strictly for industrial fluid handling and mechanical structural parts.

التطبيقات الأساسية

Industrial Valves & Pumps
High-pressure valve seats, gaskets, and pump liners that must resist deformation and chemical attack.

Heavy Industry Bearings
Bushings and wear plates for bridge structures, heavy machinery, and industrial sliders where high compressive loads are present.

الأنظمة الهيدروليكية والهوائية
Reinforced backup rings and dynamic seals that prevent the extrusion of primary seals under high pressure.

المعالجة الكيميائية
Agitator bushings and pipe supports requiring a combination of low friction and structural rigidity in corrosive tanks.

الخصائص

الكثافة	2.22 - 2.26 g/cm³
مقاومة الشد	15 - 25 MPa
معامل الاحتكاك	0.10 - 0.20
الصلابة	60 - 70 Shore D
الاستطالة عند الكسر	200 - 300%
التوصيل الحراري	0.45 W/m-K
درجة حرارة الخدمة المستمرة	-200 إلى +260 °م
امتصاص الماء	< 0.02%
Creep Resistance	متفوق
تقييم قابلية التشغيل	متوسط
أقصى حجم للقطعة	2000 × 800 × 600 مم