GB/T 23615.1-2017 PDF English
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Thermal barrier materials for architecture aluminium alloy extruded profiles -- Part 1: Polyamide profiles
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Accessorial material for architectural aluminum alloy profiles -- Part 1: Thermal barrier strip of polyamide
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GB/T 23615.1-2017: PDF in English (GBT 23615.1-2017) GB/T 23615.1-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.60
H 30
Replacing GB/T 23615.1-2009
Thermal barrier materials for architecture aluminum
alloy extruded profiles - Part 1. Polyamide profiles
ISSUED ON. OCTOBER 14, 2017
IMPLEMENTED ON. MAY 01, 2018
Issued by. General Administration of Quality Supervision Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 8
4 Requirements ... 8
5 Test methods ... 15
6 Inspection rules ... 20
7 Marking, packaging, transportation, storage and quality certificate ... 26
8 Order (or contract) content ... 28
Appendix A (Normative) Terms and definitions of polyamide profiles typical
defects ... 29
Appendix B (Normative) Microstructure test method ... 33
Appendix C (Normative) Test method for stress cracking performance of shaft
pin ... 36
Appendix D (Normative) Test method for longitudinal tensile strength values at
room temperature, tensile facture at elongation at room temperature, tensile
modulus at room temperature ... 39
Appendix E (Normative) Test method for transverse tensile characteristic value
at room temperature, transverse tensile characteristic value at high temperature
and transverse tensile characteristic value at low temperature ... 43
Appendix F (Normative) Aluminum alloy profile composite adaptability test
method ... 46
Thermal barrier materials for architecture aluminum
alloy extruded profiles - Part 1. Polyamide profiles
1 Scope
This part of GB/T 23615 specifies the terms and definitions, requirements, test
methods, inspection rules, marking, packaging, transportation, storage, quality
certificate and order form (or contract) of polyamide profiles.
This part applies to the thermal barrier materials for architecture aluminum alloy
extruded profiles - Polyamide profiles.
The extruded profiles of thermal barrier materials of other types can make
reference to this part.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 1033.1-2008 Plastics - Methods for determining the density of non-
cellular plastics - Part 1. Immersion method liquid pycnometer method and
titration method
GB/T 1040.1 Plastics - Determination of tensile properties - Part 1. General
principles
GB/T 1043.1 Plastics - Determination of Charpy impact properties - Part 1.
Non-instrumented impact test
GB/T 2035 Terms and definitions for plastics
GB/T 2411 Plastics and ebonite - Determination of indentation hardness by
means of a durometer (Shore hardness)
GB/T 5237.1-2017 Wrought aluminum alloy extruded profiles for architecture
- Part 1. Mill finish profiles
GB/T 6682 Water for analytical laboratory use - Specification and test
methods
10%.
5.2 Specimen pretreatment
All specimens are placed in a common drying oven at 140 °C ± 2 °C for 6 h and
then taken out and placed in a desiccator at 23 °C ± 2 °C for at least 2 h.
5.3 Test temperature
Polyamide profile test temperature. room temperature 23 °C ± 2 °C, low
temperature -30 °C ± 2 °C, high temperature 90 °C ± 2 °C.
5.4 Components
The glass fiber content is measured by the direct calcination method (Method
A) as specified in GB/T 9345.1-2008, the calcination temperature is 750 °C.
5.5 Ash
5.5.1 After calcination, the residue is placed under natural scattered light, and
the color of the glass fiber is observed with normal vision and photographed.
5.5.2 Then the residue is placed under a microscope equipped with a camera,
select the magnification at 50×, observe the morphology of the glass fiber and
record the photo.
5.6 Microstructure
The microstructure is tested in accordance with the method as specified in
Appendix B.
5.7 Fracture morphology
The fracture that has been transversely stretched at room temperature is placed
under a scanning electron microscope equipped with a camera. The
magnification shall be selected at 100× ~ 500×, a representative field of view is
selected for photo recording.
5.8 Dimensional deviation
The dimensions are measured with a Vernier caliper with a precision of 0.02
mm, a micrometer of 0.01 mm or a dedicated instrument.
5.9 Performance
5.9.1 Density
The density test is carried out in accordance with the impregnation method as
specified in GB/T 1033.1-2008.
2 - Pendulum;
3 - Impact blade;
4 - Specimen;
5 - Support.
Figure 9 -- Schematic diagram of the non-notched impact strength test
device
5.9.6 Longitudinal tensile characteristic values at room temperature,
longitudinal tensile elongation at break at room temperature, longitudinal
tensile modulus at room temperature
The longitudinal tensile characteristic values at room temperature, longitudinal
tensile elongation at break at room temperature, longitudinal tensile modulus at
room temperature are determined in accordance with the method as specified
in Appendix D.
5.9.7 Transverse tensile characteristic value at room temperature,
transverse tensile characteristic value at high temperature, transverse
tensile characteristic value at low temperature
The transverse tensile characteristic value at room temperature, transverse
tensile characteristic value at high temperature, transverse tensile
characteristic value at low temperature are determined in accordance with the
method as specified in Appendix E.
5.9.8 Water resistance
5.9.8.1 Water resistance test method is divided into boiling water test method
and normal temperature immersion test method. The test method is agreed by
the supplier and the buyer, and is indicated in the order form (or contract). When
not specified or during arbitration test, it shall be performed in accordance with
the normal temperature immersion test method.
5.9.8.2 Boiling water test method. Put the specimen into the grade III water as
specified in GB/T 6682, boil it for 4 h, then take out the specimen and place it
at room temperature for 48 h. Determine the transverse tensile characteristic
value at room temperature of the specimen in accordance with Appendix E.
5.9.8.3 Normal temperature immersion test method. Place the specimen in the
grade III water (temperature 23 ± 2 °C) as specified in GB/T 6682 for 1000 h,
then take the specimen out, place it at room temperature for 48 h, determine
the transverse tensile characteristic value at room temperature in accordance
with Appendix E.
5.9.9 Thermal aging performance
5.9.9.1 Hang the specimen on the specimen holder of the thermal aging box,
heat the thermal aging box to 140 °C ± 2 °C for 1000 h, then take out the
specimen and leave it at room temperature for not less than 24 h.
5.9.9.2 Take one specimen into the transverse stretching fixture, determine the
maximum transverse tensile strength of the specimen in accordance with
E.4.1.2 ~ E.4.1.4 of Appendix E.
5.9.9.3 Repeat 5.9.9.2 until the test of other specimens is completed.
5.9.9.4 Calculate the maximum transverse tensile strength of each specimen in
accordance with formula (E.1) of Appendix E, then calculate the transverse
tensile characteristic value in accordance with formula (E.2).
5.10 Appearance quality
Under natural scattered light, visually inspect it with normal vision.
5.11 Aluminum alloy profile composite adaptability
The composite adaptability of aluminum alloy profiles is tested in accordance
with the method as specified in Appendix F.
6 Inspection rules
6.1 Inspection and acceptance
6.1.1 The product shall be inspected by the supplier to ensure that the product
quality complies with the provisions of this part or the order form (or contract),
and it shall fill in the quality certificate.
6.1.2 The purchaser may inspect the products received in accordance with the
provisions of this part. If the inspection result does not conform to the provisions
of this part or the order form (or contract), it shall be submitted to the supplier
in writing and shall be settled by negotiation between the supplier and the buyer.
Objections related to appearance quality and dimensional deviation shall be
filed within one month from the date of receipt of the product. Any objection to
other performance may be filed within three months from the date of receipt of
the product. If arbitration is required, it may be entrusted to the organization
approved by both the supplier and the purchaser. The arbitration sampling shall
be on the premise of the purchaser and shall be jointly carried out by both the
supplier and the purchaser.
6.2 Batching
unqualified, another double number of specimens shall be taken from the batch
for repeated test. If the repeated test results are all qualified, the batch of
products is judged to be qualified. If the shaft pin stress cracking performance
of any one specimen is still unqualified in the repeated test results, the batch is
judged to be unqualified.
6.6.9 When the Shore hardness of any specimen is unqualified, another double
number of specimens shall be taken from the batch for repeated test. If the
repeated test results are all qualified, the batch of products is judged to be
qualified. If the Shore hardness of any one specimen is still unqualified in the
repeated test results, the batch is judged to be unqualified.
6.6.10 When the low temperature unnotched impact strength of any specimen
is unqualified, another double number of specimens shall be taken from the
batch for repeated test. If the repeated test results are all qualified, the batch of
products is judged to be qualified. If the low temperature unnotched impact
strength of any one specimen is still unqualified in the repeated test results, the
batch is judged to be unqualified.
6.6.11 When the longitudinal tensile characteristic value at room temperature
of any specimen is unqualified, another double number of specimens shall be
taken from the batch for repeated test. If the repeated test results are all
qualified, the batch of products is judged to be qualified. If the longitudinal
tensile characteristic value at room temperature of any one specimen is still
unqualified in the repeated test results, the batch is judged to be unqualified.
6.6.12 When the longitudinal tensile elongation at break at room temperature
of any specimen is unqualified, another double number of specimens shall be
taken from the batch for repeated test. If the repeated test results are all
qualified, the batch of products is judged to be qualified. If the longitudinal
tensile elongation at break at room temperature of any one specimen is still
unqualified in the repeated test results, the batch is judged to be unqualified.
6.6.13 When the longitudinal tensile modulus at room temperature of any
specimen is unqualified, another double number of specimens shall be taken
from the batch for repeated test. If the repeated test results are all qualified, the
batch of products is judged to be qualified. If the longitudinal tensile modulus at
room temperature of any one specimen is still unqualified in the repeated test
results, the batch is judged to be unqualified.
6.6.14 When the transverse tensile characteristic value at room temperature of
any one group of specimens is unqualified, another double number of
specimens shall be taken from the batch for repeated test. If the repeated test
results are all qualified, the batch of products is judged to be qualified. If the
transverse tensile characteristic value at room temperature of any one groups
of specimens is still unqualified in the repeated test results, the batch is judged
7.1.1 Marking shall be printed on the inspection qualified polyamide profiles.
The markings should be applied once every 500 mm. Laser printing technology
should be used.
7.1.2 Product labels including the following shall be affixed to the obvious parts
of the product packaging.
a) The name and trademark of the supplier;
b) The product name, size specifications, quantity;
c) The date of manufacture and batch number;
d) The supplier's quality inspection department check seal (or the signature
or seal of the quality inspector);
e) The number of this part.
7.2 Packaging
The rolled strip polyamide profile should be packaged into a roll of 300 m ~
1000 m, the straight strip shaped polyamide profile should be packaged into a
bundle of 50 ~ 100 pieces.
7.3 Transportation and storage
7.3.1 In transportation and storage, it shall avoid contact with acids, alkalis,
salts and organic solvents. Avoid sun exposure, rain, impact or extrusion.
7.3.2 The product shall be placed horizontally and stored in a ventilated, dry
and flat area.
7.4 Quality certificate
Each batch of polyamide profile shall be accompanied by a product quality
certificate, indicating the information below.
a) The name and address of the supplier;
b) The product name and size specifications;
c) The type of packaging;
d) The results of various exit-factory inspections;
e) The date of manufacture or batch number;
f) Quantity;
placed in the mounting machine. The temperature is not more than 180 °C, the
cold setting method can also be used. The transverse and longitudinal
specimens shall be vertically inlaid and shall not have an inclined angle.
B.3.3 Grinding
B.3.3.1 Use the coarse SiC water sandpaper (abrasive grain size of 68 μm ~
100 μm) to grind the sample surface to be inspected on the grinding and
polishing machine. The grinding process is cooled and lubricated with alcohol
or water.
B.3.3.2 Turn the sample to 90° and use SiC water sandpaper (the abrasive
grain size is preferably 18 μm ~ 35 μm) to finely grind it, until the surface of the
sample is flat and without rough scratches. The grinding process is cooled and
lubricated by alcohol or water. If the SiC water sandpaper used in fine grinding
has a finer particle size (the abrasive grain size is about 10 μm), it can be
subject to fine polishing in B.3.5 directly after the fine grinding.
B.3.4 Rough polishing
After using water to rinse the ground specimen, use a coarse-grained diamond
suspension or other polishing material as a coarse polishing agent (the abrasive
grain size is preferably 5 μm ~ 9 μm), to perform coarse polishing on a polishing
plate which is equipped with a coarse wool. The speed of the polishing machine
should be 300 r/min ~ 600 r/min. The direction of the rough polishing shall be
perpendicular to the direction of the grinding mark, it is polished until the
grinding mark is completely disappear and the ground surface is flat, bright and
free from dirt.
B.3.5 Fine polishing
After using water to rinse the coarse polished specimen, use a fine-grained
diamond suspension or other polishing material as a coarse polishing agent
(the abrasive grain size is preferably 1 μm ~ 3 μm), to perform fine polishing on
a polishing plate which is equipped with a fine wool (or other fine and soft silk
fabric). The speed of the polishing machine should be 150 r/min ~ 300 r/min.
The direction of the fine polishing shall be perpendicular to the direction of the
coarse polishing mark, it is polished until the surface is free from mark or dirt,
and the clear and complete glass fiber structure can be observed on the
microscope.
B.3.6 Cleaning
The finely polished specimen is washed with water and dried to prepare for use.
B.4 Microstructure observation
E.3 Specimen
E.3.1 Number all specimens cut from the polyamide profile and use a Vernier
caliper to measure the length L and the minimum main bearing wall thickness t
of each specimen. See Figure E.1.
E.3.2 Place the specimen in an ordinary dry box at 140 °C ± 2 °C for 6 h, then
take it out and place it in a desiccator at 23 °C ± 2 °C for cooling for not less
than 2 h.
E.4 Test procedure
E.4.1 Test of transverse tensile characteristic values at room temperature
E.4.1.1 Take 1 specimen (E.3.2) from the dryer and install it into the polyamide
profile clamp.
E.4.1.2 Install the complete set of clamps loaded with the polyamide profile into
the universal material testing machine (E.2.1).
E.4.1.3 Apply a preload of 50 N ± 2 N.
E.4.1.4 Zero the universal material testing machine (E.2.1). Stretch the
specimen at a speed of 10 mm/min ± 2 mm/min, until the specimen is broken.
Record the maximum tensile strength of the specimen.
E.4.1.5 Repeat E.4.1.1 ~ E.4.1.4 until the test of other specimens is completed.
E.4.2 Test of transverse tensile characteristic values at high and low
temperature
E.4.2.1 Take one specimen (E.3.2) from the dryer and install it into the
polyamide profile clamp.
E.4.2.2 Place the complete set of clamp loaded with the polyamide profile
specimens into the environmental test chamber (E.2.2) which is installed on the
universal material testing machine (E.2.1).
E.4.2.3 Close the door, start the equipment, raise or lower to the specified
temperature (transverse tensile characteristic value test at high temperature.
90 °C ± 2 °C, transverse tensile characteristic value test at low temperature. -
30 °C ± 2 °C, maintain constant temperature for 30 min.
E.4.2.4 Perform tensile test in accordance with E.4.1.3 ~ E.4.1.4.
E.4.2.5 Repeat E.4.2.1 ~ E.4.2.4 (constant temperature can be reduced to 10
min) until the test of other specimens is completed.
E.5 Calculation of test results
Appendix F
(Normative)
Aluminum alloy profile composite adaptability test method
F.1 Principle of the method
The composite adaptability test of aluminum alloy profiles is that the polyamide
profile and an aluminum alloy profile are combined into a thermal insulation
profile, after the thermal insulation profile specimen is immersed in water or in
a high temperature and high humidity environment, the transverse tensile
characteristic value at the set temperature is measured, then it is compared
with the transverse tensile characteristic values at the corresponding
temperatures of the thermal insulation profiles that have not been immersed in
water or high-temperature and high-humidity environments.
F.2 Specimen
F.2.1 Specimen preparation
Randomly take two pieces of thermal insulation profiles, cut 10 specimens from
the middle portion of each piece of thermal insulation profile, respectively cut
10 specimens from both ends (totally 60 specimens). Divide the specimen
equally into 6 sets (each set includes at least 3 middle specimens), the
specimen length is 100 mm ± 2 mm, the specimen is allowed to be shortened
to a minimum of 18 mm (the length of the specimen is 100 mm ± 2 mm in case
of arbitration).
When the transverse tensile test is carried out, the thermal insulation profile
specimen can be directly subject to the transverse tensile test without
undergoing the longitudinal shear failure at room temperature.
F.2.2 Specimen state adjustment
Before each performance test, the specimen shall be placed at room
temperature of 23 °C ± 2 °C, 50% ± 10% humidity for 48 h, the cutting fracture
shall be protected.
F.3 Test method
F.3.1 Water immersion test method
F.3.1.1 After 10 specimens are taken to be stable under the set low temperature
and high temperature (see Table 4), perform the transverse tensile test in
accordance with the provisions of GB/T 28289-2012, respectively calculate the
transverse tensile characteristic value at high temperature and low temperature,
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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