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الألمانية
العربيةالحالي
الفرنسية
الإندونيسية
اليابانية
الكورية
اللغة الملاوية
البرتغالية
الروسية
الإسبانية
التايلاندية
اللغة التركية
اللغة الفيتنامية
اكسسوارات تركيب الغرف النظيفة
البولي يوريثان رغوة تسرب
A controlled-expansion polyurethane foam for insulating and filling concealed gaps around cleanroom frames, panels and service openings.
- Controlled Gap Expansion
- Thermal and Acoustic Fill
- Strong Substrate Adhesion
- Trim-and-Finish Surface
مقدمة المنتج
Polyurethane foam sealant is dispensed from a pressurized aerosol can as a moisture-reactive cellular material. It expands within irregular concealed voids, adheres to many common construction substrates and cures into a lightweight insulating fill that can be trimmed after hardening. In cleanroom work it is normally kept behind the exposed hygienic finish, with the accessible joint subsequently closed using a smooth compatible sealant or trim profile.
الخصائص الرئيسية
The cured closed- and open-cell structure reduces uncontrolled air movement through concealed gaps.
Adhesion to compatible concrete, masonry, timber, metal and rigid insulation stabilizes the filled cavity.
Hardened excess can be cut back to receive a cleanable cover trim or surface seal.
مخاوف المنتج للعملاء
Irregular installation cavities need a continuous insulating fill without allowing expanding foam to become the exposed cleanroom surface.
Rigid packing leaves small inaccessible voids behind frames.Fresh foam expands into uneven spaces and bonds to prepared cavity surfaces.
Excessive expansion can bow lightweight panels or distort frames.A low- or controlled-expansion grade is applied in measured lifts with room left for curing growth.
Exposed cellular foam is difficult to clean and can degrade under light.The cured fill is trimmed below the face and protected by a smooth compatible sealant or cover profile.
Dry or dusty substrates produce weak and uneven cure.Surfaces are cleaned and lightly conditioned with moisture where the selected product instructions permit.
تطبيقات نموذجية
Door and window frame backfillingConcealed cleanroom panel perimeter gapsService sleeve annular voidsCeiling and partition installation cavitiesInsulating gaps behind hygienic trims
المعلمات الفنية
Typical construction and application ranges for a one-component aerosol polyurethane foam sealant are shown below.
| المواد الأساسية | One-component moisture-curing polyurethane prepolymer and propellant |
|---|---|
| سمك اللوحة | 10-80 mm practical filled cavity depth per controlled application |
| العرض الفعال | 10-50 mm recommended concealed gap width |
| الحد الأقصى الطول | Up to 30000 mm indicative bead length per 750 mL can, depending on bead size |
| الصلب يواجه سمك | 0.40-1.20 mm compatible cleanroom panel or frame facing |
| الكثافة الأساسية | Approximately 15-30 kg/m³ free-rise cured foam density |
| الموصلية الحرارية | Approximately 0.033-0.040 W/(m·K) for cured foam |
| إنهاء السطح | Trimmed cellular foam concealed beneath a cleanable sealant or cover trim |
| نوع المشترك | Concealed frame, perimeter or penetration cavity fill |
| التخصيص | متوفر على أساس التطبيق المقصود وبيئة التشغيل. |
الخيارات المتاحة
Straw-applied or gun-grade canLow-expansion frame gradeSummer or winter application gradeStandard yellow or off-white cured foam
Planning a Polyurethane Foam Sealant specification?
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