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CHEMPU · ODORLESS AUTOMOTIVE ADHESIVE · OEM GRADE

PA-145N Odorless Automotive Adhesive – Breathe Easy, Bond Strong

Engineered for enclosed spaces and passenger comfort. PA-145N polyurethane windshield adhesive delivers high tensile bonding with no volatile odor after application, 400% elongation, and high vibration damping for luxury passenger cars, buses, and rail transit.

Low Odor
No volatile smell after cure
400%
Elongation at Break
55 Shore A
Moderate hardness, easy repair
3-5 mm/d
Consistent curing speed
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TECHNICAL SPECIFICATIONS

PA-145N Odorless Auto Glass Adhesive Specifications

Formulated with advanced polyurethane prepolymers, PA-145N delivers high elasticity, reliable shear bonding, and complete odor comfort for technicians and end-users.

PA-145N odorless auto glass adhesive cartridge 310ml sausage

PA-145N Packaging: 310ml Cartridge / 400ml / 600ml Sausage

Property / Test ItemTechnical Specification (TDS Verified)
AppearanceBlack homogeneous paste
Odor PropertyNo volatile odor after application
Density (g/cm³)1.35 ± 0.05
Tack Free Time20 – 50 minutes (23°C, 50% RH)
Curing Speed3 – 5 mm / 24 hours
Elongation at Break≥ 400% (High elasticity & damping)
Hardness (Shore A)55 ± 5 (Moderate flexibility, easy servicing)
Tensile Strength≥ 5.0 MPa
Shear Strength≥ 2.5 MPa
Non-volatile Content≥ 95%
Application Temperature+5°C to +35°C
Service Temperature−40°C to +90°C
Shelf Life9 Months (stored in dry & cool conditions)
📌 Substrate Note: PA-145N is primerless on standard clean automotive glass and painted body flanges. It provides low VOC emission compliant with modern interior air quality standards.
APPLICATION SCENARIOS

Odorless Adhesive for Enclosed & Premium Spaces

Where passenger comfort, cabin air quality, and technician safety are non-negotiable. PA-145N solves the odor complaints typical of conventional solvent-containing polyurethane adhesives.

PA-145N luxury car 4S dealership windshield replacement

Luxury Passenger Cars & 4S Shops

Premium vehicle owners expect pristine cabin environments without harsh chemical smells after windshield replacement. PA-145N eliminates pungent vapors, allowing rapid customer delivery without odor dissatisfaction.

⚠️ Common Pain: Customer complaints regarding residual glue smell in freshly replaced windshields.
PA-145N metro train rail transit enclosed window sealing

Rail Transit & Subway Train Windows

Rail coaches and metro cars are sealed, high-traffic spaces with strict interior air standards. PA-145N fulfills high elongation (400%) for track vibration absorption while maintaining zero irritating emissions during assembly.

⚠️ Common Pain: Confined rail assembly halls require low-emission adhesives to protect worker health.
PA-145N commercial coach bus side and front glass bonding

Coach Buses & Specialty Enclosures

Large bus windshields and side glass bonding require high bonding elasticity and zero solvent entrapment in large cabins. PA-145N provides moderate Shore A 55 hardness, facilitating periodic maintenance and secondary glass servicing.

⚠️ Common Pain: Stiff adhesives crack under chassis twisting; PA-145N offers 400% elongation flexibility.
PA-145N vertical sag test non-sagging auto glass adhesive
CORE TECHNOLOGY & HIGHLIGHTS

No Smell, No Sag: Engineered for Comfort and Control

PA-145N combines high-purity polyurethane chemistry with non-sag thixotropic properties. Technicians achieve sharp triangular beading on vertical pillars without bead slumping, while passengers experience zero irritating odors.

✓

Low Odor Polymer Formula

Formulated without volatile aromatic diluents, leaving no unpleasant chemical odor inside vehicle cabins post-curing.

✓

Superior Non-Sag Thixotropy

Holds bead profile up to 30 mm heights on upright vehicle pillars without sagging or dripping before skin formation.

✓

Shore A 55 — Easy Secondary Replacement

Provides optimal structural stiffness while remaining clean-cutting with standard glass-removal tools during future replacements.

✓

400% Elastic Damping

Absorbs severe vibration, chassis torque, and body flex across dynamic temperature shifts from −40°C to +90°C.

OEM & MANUFACTURING CREDIBILITY

High-Standard Factory for High-Standard Projects

CHEMPU operates 5 modern chemical production bases with a total capacity exceeding 500,000 tons. Partnering with global auto glass leaders such as Fuyao and Xinyi branches, our PA-145N odorless auto glass adhesive complies with ISO 9001:2015 and ISO 14001:2004 strict environmental governance.

500,000 T/Y
Comprehensive Production Capacity
80+ R&D Experts
40% Master & Doctoral Chemists
ISO 9001 / 14001
Certified Quality Management
Global OEM
Custom Formula, Cartridge & Label
CHEMPU Shanghai adhesive factory manufacturing base ISO 9001 14001 quality certificates for automotive adhesive
FREQUENTLY ASKED QUESTIONS

Odorless Automotive Adhesive FAQ

Common technical questions regarding low odor polyurethane adhesives, compliance standards, and installation.

What is odorless automotive adhesive?
Odorless automotive adhesive is a specially formulated polyurethane sealant designed with ultra-low VOC emissions and no volatile odor. It cures without pungent chemical vapors, making it ideal for passenger cars, luxury vehicle repairs, rail transit, and confined installation environments.
Is PA-145N really odorless after application?
Yes. According to CHEMPU laboratory tests, PA-145N exhibits no volatile odor post-application. Unlike conventional polyurethane adhesives that emit pungent solvent smells for days, PA-145N ensures clean vehicle interior air immediately after curing.
Why use low odor windshield adhesive for luxury cars?
Luxury vehicle owners and 4S dealership service centers demand the highest customer experience. Using PA-145N prevents chemical odor complaints inside high-end vehicle cabins following windshield and auto glass replacement.
Can I use PA-145N for rail transit glass bonding?
Yes. PA-145N is specifically recommended for rail transit, metro coaches, and train windows due to its zero irritating emissions in confined spaces and exceptional 400% elongation, which effectively absorbs rail vibrations.
What is the elongation of PA-145N adhesive?
PA-145N offers elongation at break of 400% or greater. This high elasticity provides superior vibration dampening and thermal stress resistance between vehicle glass and metal frames across temperatures from −40°C to +90°C.
Does PA-145N sag on vertical surfaces?
No. PA-145N features high thixotropic stability. During vertical pillar glass installation, the extruded triangular bead holds its position without slumping or sagging, ensuring an even adhesive bond line.
Is PA-145N suitable for bus windshield bonding?
Yes. PA-145N is widely applied in commercial coach buses, city buses, and specialty vehicles where large glass panels require vibration absorption and cabin air quality protection.
Can I get PA-145N OEM odorless auto glass adhesive with my own brand?
Yes. CHEMPU provides full OEM and private label services for PA-145N, including customized cartridge and sausage printing, private brand labels, custom carton packaging, and tailored viscosity specifications.
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