[Chinese aluminum industry network] aluminum alloy door and window sealant is generally used for building doors and windows curtain wall components, such as glass and bead, glass and fan, frame and fan and other joints, the design idea is to achieve aluminum alloy doors and windows through extrusion variants Sealing effect forms barriers to air, liquid, and dust. In order to achieve the aluminum alloy doors and windows heat insulation, sound insulation, dustproof, waterproof effect. Therefore, aluminum alloy door and window sealant strips are required to have good resilience, sealability, and weather resistance. The mainstream products in the mainstream market of door and window seals include four types: PVC, EPDM, TPV, and silicone rubber. So what's the difference in their performance?
1, PVC
Performance: production of polluted environment; poor weatherability; case of low temperature hardening, shrinkage, cracking; poor overall physical and mechanical properties. Solderable.
Specific gravity: high-grade 1.5g/cm3; mid-range 1.6g/cm3; low-grade 1.7g/cm3
Service life: 1-3 years
Recommendation Index: Not recommended.
2. EPDM
Performance: good weather resistance, ozone, aging properties; good overall physical and mechanical properties; excellent in photo-oxidation. Not colorable, not welded.
Specific gravity: 1.3-1.35g/cm3
Service life: more than 20 years
Recommended index: recommended for use in non-chill areas of general engineering
3, thermoplastic elastomer (TPV)
Performance: Excellent resistance to ozone and weathering; Good overall physical and mechanical properties; Excellent for photo-oxidation. Colorable, weldable.
Specific gravity: 1.05-1.15g/cm3
Service life: more than 25 years
Recommended index: recommended for use in cold regions
4, silicone rubber
Performance: Excellent resistance to ozone, weathering aging; Excellent elasticity and good compression deformation; Can be color-tuned, high color fastness. Not weldable.
Specific gravity: 1.18-1.25g/cm3
Service life: more than 50 years
Recommendation: Recommended for use in severe cold areas/high-end projects
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