Lab & Testing
LABORATORIES
We have our own laboratory for common testing items, and two cooperated labs for regularly authoritative inspection. All extruded plastic profiles are in line with the Chinese standard 2017 version and the European Standard, further more our KAXITE series polyamide thermal insulation strips support OEM for performance.
Due to the great progress and high performance, we were invited as the earliest member of the Chinese National Standard Committee, after years of development, we became the leader of the Chinese National Standard Committee (for revising of GB/T 23615.1-2017).
For the constructional plastic profiles, we do the production and experiment in accordance with the standards below:
- GB/T 23615.1-2017 Accessorial material for architectural aluminum alloy profiles -- Part 1: Thermal barrier strip of polyamide
- EN 14024-2004 Metal profiles with thermal barrier -- Mechanical performance Requirement, proof and tests for assessment
- YS/T 437-2008 Aluminium profiles moment of inertia calculation methods and computing software requirements
- JG/T 174-2005 Thermal barrier strips for construction industry
- GB 5237.6 -2012 Wrought aluminium alloy extruded profiles for architecture -- Part 6: Thermal barrier profiles
- GB/T 8478-2008 Aluminium windows and doors
- GB/T 8484-2008 Graduation and test for thermal insulating properties of doors and windows
- JG 175-2011 Insulating aluminum alloy profiles with thermal barrier for buildings
- UL94 Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances
- ASTM E84 Standard Test Method for Surface Burning Characteristics of Building Materials
-
NFPA 285 Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Non-Load-Bearing Wall Assemblies Containing Combustible Components
|
Authoritative Test |
Dimension Test |
Ash Test |
 Mechanical Performance |
 -30℃ Weatherability |
Apart from the shapes of polyamide thermal break which can be tested directly, the custoimzed special shapes can't be tested directly, so we take specimen from the polyamide profiles and do the testing.
|
Specimen Design |
CNC Machining |
Specimens Off |
 Testing |
 Datas Out |
Actually, the Chinese standard GB/T 23615.1-2017 has more testing items than the European standard. Further more, we can realize extremely high performance values for customers. According to all of these, we can do the experiment items like below:
performance table of PA66 GF25 Building material -- heat insulation strip
1. Sample water content less than 0.2% by weight.
No.
Characteristic
Size of Thermal
Break
GB/T
23615.1-2017
KAXITE
Customize
1
Density
(1.30±0.05)g/cm3
1.25~1.45
2
DSC melting peak temperature
≥255℃
≥255℃
3
Stress cracking by shaft nail
No crack at orifice
No crack at orifice
4
Shao hardness HD
80±5
80±10
5
Low temperature notched impact strength(-30℃±2℃)
≥50kJ/m2
≥50kJ/m2
6
Room temperature longitudinal tensile eigenvalue(23℃±2℃)
≥90MPa
≥100MPa
7
Room temperature longitudinal tensile elongation
≥3%
≥3%
8
Room temperature longitudinal tensile modulus of elasticity
≥4500MPa
≥5500MPa
9
Transverse
tensile eigenvalue
in room temperature (23℃±2℃)
I type（Width<20mm）
≥90MPa
30~140MPa
10
I type（Width≥20mm）
≥80MPa
11
special shape
≥25MPa
12
Transverse
tensile eigenvalue
in high temperature(90℃±2℃)
I type（Width<20mm）
≥55MPa
13
I type（Width≥20mm）
≥45MPa
14
special shape
≥20MPa
15
Transverse
tensile eigenvalue
in low temperature(-30℃±2℃)
I type（Width<20mm）
≥90MPa
16
I type（Width≥20mm）
≥80MPa
17
special shape
≥25MPa
18
Transverse
tensile eigenvalue
(Hydrolytic resistance, boiling for 4h or keep in 23℃ water for 1000h)
I type（Width<20mm）
≥85MPa
19
I type（Width≥20mm）
≥75MPa
20
special shape
≥22MPa
21
Transverse
tensile eigenvalue
(Thermal aging properties, 140℃ for 1000h)
I type（Width<20mm）
≥60MPa
22
I type（Width≥20mm）
≥55MPa
23
special shape
≥20MPa
24
Typical value of
thermal conductivity
Heat flow metering
method
0.30W/(m·K)
0.30W/(m·K)
25
Linear coefficient of
expansion
2.3×10-5K-1～3.5×10-5K-1
2.3×10-5K-1～3.5×10-5K-1
26
Fiberglass Content
-
0~70%
27
FLAMMABILITY (UL94)
-
94V-0
2 Normal laboratory condition:23℃±2℃ and 50%土10% relative humidity.
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