This part of GB/T 8804 specifies the test methods for tensile properties, including tensile yield stress and elongation at break. This part is applicable to all types of thermoplastic pipes. GB/T 8804.1-2003 Determination of tensile properties of thermoplastic pipes Part 1: General principles of test methods GB/T8804.1-2003 Standard download decompression password: www.bzxz.net

GB: TB5G42303 Thermoplastic pipes - Determination of tensile properties - 3.3 is divided into two parts: Part 1: General principles of test methods,
GH/T 8804, 1--2003
Part 2: Rigid PVC (PV-), hydrogenated polyvinyl (FVC-C) and high-strength PVC (H1) pipes - Part 3 Polyolefin pipes.
This part is (Part 1 of B/8504-2003, equivalent to 1506251, 1S07 Thermoplastic Plastics Forestry Report
Part 1, Test Method General Measurement>
This part, together with B/8804.2200R and G/T04.3-2004--, replaces GB/T8304.1~-8504.2--188. Compared with T-15, this standard needs to be changed. 1. This standard is divided into two parts: 1. Thermoplastic material tensile test method 2. The original standard test time is 1 hour, but now it is determined by the thickness of the test: 3. The number of test pieces is changed to be determined by the nominal diameter; 4. The original standard can be increased by || tt || 3. Appendix A is added.
This part specifies the properties of heat-resistant plastic sheets.
This standard is proposed by China Light Industry Association and issued by China Material Standardization Committee (TC48). This part is the subject of the order of Huaya Wuchao Plastic Co., Ltd., and participated in the order of Jiandeng Jiuxin Jingshi Technology Co., Ltd. The main drafters of this part are Shang Jinyu and Zhou Ling. The author is: GD/8804.1-2DD3
This part of IS0325 specifies the test methods for determining the tensile properties of heat-resistant plastic sheets. This part provides data for further research and development. When the application conditions are quite different from this test method, this test method cannot be used as the main basis for application. Such applications require corresponding uniqueness. The deformation and fatigue test tensile performance test methods should be carried out after the material is made into pipes. The test results can be beneficial to material processing control. World. Tensor Performance Evaluation of Long-term Performance of Pipes: TSO6259 is based on IS027. For the convenience of use, a complete text of the tensile performance of the dry heat test has been drafted. If more details are needed, please refer to SQ527. It should be noted that IS027 is used in material specification sheets, while T TS 6259 is applicable to materials made into tubular form. It should be noted that only the pipe village mentioned is used for testing. For example, the wall thickness of the pipe can reach 60mm. The difficulty lies in the selection of test specimens. 1527 stipulates that the specimen is 10mm thick, while the pipe sheet can reach 60mm. Although the two standards are not applicable to the same product, the whole village can only be cut by machine. TS 6259 consists of three parts. The first part specifies the general conditions for the determination of tensile properties of thermoplastics. The other two parts give the test procedures for the same material separately. See the introduction: For the various materials, the test procedures are as follows: This regulation is drawn up in the relevant parts as an informative appendix. 1 Scope
Determination of tensile properties of thermoplastic plastic pipes
Part 1: General test methods
GB/T8804.1-2D03
GTV04 This section specifies the test method for the tensile properties of thermoplastic plastic pipes, including the following properties: tensile strength;
Cumulative elongation.
This part is applicable to various types of thermoplastic plastics. 2 Normative referenced documents
The clauses in the following documents become the included clauses of this part through reference in this part. For all dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to the agreement on this part are encouraged to investigate whether the latest versions of these documents can be used. For undated references, the latest versions shall apply. GB/T 3360-19A2 Statistical treatment and interpretation of data Estimation of mean confidence intervals (ISO 502, 1080) GB/T 8SU4.2-2003 Thermoplastic materials - Determination of tensile properties - Part 2: Polyvinyl chloride (PVC-TJ), polyvinyl chloride (VC-C) and high impact polyvinyl chloride (F VC-HI> Arm Village (ilO259-7199) (T38Rn4.5--2X03 Thermal plastic pipe tensile performance test Part 3: Thermal pipe (ictIS0625S-3: 1997) B/T120C-:937 Rubber material tensile, bending test machine technical requirements (id: S05893: 1993) 3 Principle
Longitudinal cutting or mechanical processing of thermoplastic plastic pipes to obtain samples of specified shape and size. The tensile properties of the pipe are measured under specified conditions by a tensile testing machine.
4 Equipment
4.1 Tensile test machine
Should comply with The provisions of G3T172G3 and 4.2, 4.8, 4.4. 4.2 Clamps
The tester is connected to the test machine with a fixture to hold the test specimen. The long axis of the specimen is aligned with the direction of the tensile force passing through the center of the light. The specimen is supported tightly so that it does not move relative to the fixture as much as possible. The test group is disconnected at the fixture. 4.3 The display product can show the force applied to the test specimen during the entire test process. It is not affected by the flammability at a certain speed and its specific value is controlled within the actual value range. Precautions should be in accordance with the requirements of CB/C. || tt||4.4 Measuring instrument
Measure the length of the test specimen at a certain moment during the test. The instrument shall not be affected by the hysteresis of the test speed and the deformation within the range of measurement error. During the test, the instrument shall be placed in a position where the test specimen undergoes the least damage and deformation and no slip occurs between the test specimen to avoid affecting the accuracy of the elongation measurement. Note: The length and width of the test specimen shall be recorded automatically or in the laboratory at any time. 4.5 Measuring instrument
CB/T8804.1—2003
Instrument used to display the thickness and width of the test column, the change is 0.1 4.6 The cutting tool
can produce samples in accordance with the relevant requirements of GB18804.2 or (8804.3): 4.7 The sample making machine and milling cutter
should be able to produce samples in accordance with the relevant requirements of GB/T8804.2 or GB/T8804.3. 5 Samples
5.1 Sample requirements
The sample group should be in accordance with the corresponding requirements of CB/T8804.2 or GB/T9804.3. 5.2 Preparation of samples
5.2.1 Sampling from the pipe tree
When taking a sample from the pipe, do not heat or flatten it. The direction of the bar is parallel to the line of the pipe tree. The sampling shop shall meet the requirements of a) or b) a) For materials with a nominal outer diameter of 63mm or less, take a pipe with a length of about 150mm.
Use a straight line as a reference line and take samples in a circular manner. Except for special cases, one sample strip should be taken for each sample, so as to form a sample (not shown in Table 1)
1 sampling quantity
Nominal outer diameter 1,/.m
Sample
) For pipes with a nominal outer diameter greater than mm, take a pipe section of about 150mm in length.
For example, the pipe section is divided into a series of sample strips according to the nominal outer diameter of the pipe. 73+:28F
260,,46
Unless otherwise specified, the nominal outer diameter of the section is divided into a series of sample strips according to the requirements in Table 1, and the sampling rate is 1 piece per year.
■. Decision:
Same case:
Sample,
National 1 Sample preparation
5.2.2 Selection of samples
5.2.2.1 Selection according to
GB/E8804.1—2003
Based on the requirements of the standards for products made of different materials, select the cumulative load or mechanical processing method to make the sample from the middle part of the product. 5.2.2.2 Selection of cutting method
Should be in accordance with the shape required in GB/T8814.2 or GR/T8804.3. Select the screen with appropriate cutter (4.6):
Cut the sample from the strip (5.2.1).
5.2.2.3 Machining method
The specimens are prepared by machining, including milling. Before machining, the specimens should be kept warm as soon as possible to avoid cracks, bruises and other visible defects that reduce the surface quality of the specimens. Note: The following reference materials are used in the following reference materials: 12818 (Appendix 5.2.2.4 Marking lines
Draw two marking lines approximately equal in distance from the center point. The distance between the marking lines should be accurate to 1%. Do not scratch, impact or apply force to the specimen when drawing the marking lines. To avoid the specimen from being twisted, the marking lines should not have an adverse effect on the test specimen. The marking lines should be as hard as possible. 5.2.2.5 Specimen size
Unless otherwise specified in the relevant standards, the specimens should be cut according to the nominal outer diameter of the pipe according to the number listed in Table 1. 6 Conditioning
Unless otherwise specified in the production inspection or relevant standards, the sample should be tested after 15 days of production. Before the test, the sample should be placed in an environment of 23℃-2℃ for conditioning according to the thickness of the sample. The time should not be less than that specified in Table 2. 2 Conditioning time
Material quantity list c,iTim
h.......6
165c32
7 Speed
State conditioning time
1h=5nin
315 min
J.- 3G u
jn h='f
16 1,—= 1:
Test speed is related to the material and order of quality inspection. Determine the test time according to the product standard or the requirements of GB/T804.2 or GB/T8904,$.
Test steps
8.F The test should be carried out at a temperature of 23 ± T according to the following steps. .2 Measure the minimum width and minimum thickness of the gauge length of the piece and mark it accurately with 0.01mm. Calculate and record the minimum cross-section. .3 The specimen should be placed on the small testing machine (4.1) and its axis should be aligned with the tensile force to prevent the test tool from loosening. .2)
8.4 Use a gage to transfer the effective force or proof to the marked line of the specimen (4.4): 8.5 Test at a fixed test speed,
6 Record the length of the specimen from the stress curve until the specimen breaks. Use the point on the line marked with ten points on the line to calculate the total length of the specimen from the breaking point to the breaking point. Or directly record the total length of the marked line before the breaking point. If the effective specimen breaks from the actual position or develops deformation and breaks outside the test position, the same number of specimens should be retested.
9 Test results
9. tTensile stress
For each specimen, the tensile stress shall be calculated based on the initial micro-area of ​​the specimen according to the formula (2). D=F/A
Where:
Grain elongation, unit is MPa:
F—tensile force at the point of measurement, unit is N:
Original cross-sectional area of ​​the specimen, unit is square meter (m2). The results are valid for three mathematical terms:
In the actual working range of the measuring force, the area of ​​the cavity cannot be calculated, but for convenience, the original area of ​​the specimen is used for calculation. 9.2 Elongation at break
For each specimen, the elongation at break shall be calculated according to the formula (2). -(EI%)/L, X1c
Wherein:
Elongation at break, in %;
—The length between the marking lines, in millimeters; L: The original length between the marking lines, in millimeters (mm). The new result is guaranteed to be three valid numbers.
9.3 Statistics
If required, the standard deviation and the mean value can be calculated in the order shown in GB: T3360. The 95% accuracy: 9.4 Make-up test
If the test results of one or more of the tested specimens are abnormal, the test should be repeated with double the test results. For example, if the results of two specimens out of five test results are abnormal, four more test results should be repeated. 10 Test report
The test report should include the following content bzxZ.net
a! This part of GH/TB80 is not related to Part b. Detailed identification of the test specimens, including material composition, type, source, nominal size, etc.; type of test specimen and its preparation method;
) Test laboratory environment: Number of test specimens:
Test speed:
Break stress, indicate individual values, arithmetic mean and standard deviation! Break elongation, indicate individual values, arithmetic mean and standard deviation: Operation details not specified in GB/3 or 4 and any factors that may affect the results, existing on the test specimens and the fracture surface (such as quality);
) Test period.
1) : MP-1 N/m
A.1GB/T$S18—1998
Appendix A
(Informative Appendix)
G8/T8804.1—2003
Standard environment for the condition and testing of plastics (ID: IS0)29-:1997)4,2JS0527-1:1993 Double-material tensile test method Part 1: Test method A.3190 5272.1993
Tensile performance test method
Part 2 Test environment for molded and extruded pipes A.4ISO 2913,1994
Preparation of mechanically processed specimens
GH/T14152—2001
Test method for external convexity resistance of thermoplastic pipes eq1S312?For example, if the results of two of the five test specimens are abnormal, four more tests should be conducted. 10 Test report The test report should include the following contents: a) This part of GH/TB80 is not relevant to this part b) Detailed identification of the test specimen, including material composition, type, material source, nominal size, etc.; Type of test specimen and its preparation method; d) Specification of laboratory environment: Number of test specimens: 3) Test speed: 4) Tensile stress, indicating individual values, arithmetic mean and standard deviation; elongation at break, indicating individual values, arithmetic mean and standard deviation; operating conditions not specified in GB/3 or 4 and any factors that may affect the results; physical details (such as quality) existing on the test specimen and the fracture surface; j) Test period.
1) : MP-1 N/m
A.1GB/T$S18—1998
Appendix A
(Informative Appendix)
G8/T8804.1—2003
Standard environment for the condition and testing of plastics (ID: IS0)29-:1997)4,2JS0527-1:1993 Double-material tensile test method Part 1: Test method A.3190 5272.1993
Tensile performance test method
Part 2 Test environment for molded and extruded pipes A.4ISO 2913,1994
Preparation of mechanically processed specimens
GH/T14152—2001
Test method for external convexity resistance of thermoplastic pipes eq1S312?For example, if the results of two of the five test specimens are abnormal, four more tests should be conducted. 10 Test report The test report should include the following contents: a) This part of GH/TB80 is not relevant to this part b) Detailed identification of the test specimen, including material composition, type, material source, nominal size, etc.; Type of test specimen and its preparation method; d) Specification of laboratory environment: Number of test specimens: 3) Test speed: 4) Tensile stress, indicating individual values, arithmetic mean and standard deviation; elongation at break, indicating individual values, arithmetic mean and standard deviation; operating conditions not specified in GB/3 or 4 and any factors that may affect the results; physical properties (such as quality) existing on the test specimen and the fracture surface; j) Test period.
1) : MP-1 N/m
A.1GB/T$S18—1998
Appendix A
(Informative Appendix)
G8/T8804.1—2003
Standard environment for the testing of plastic test bars (ID: IS0)29-:1997)4,2JS0527-1:1993 Double-material tensile test method Part 1: Test method A.3190 5272.1993
Tensile performance test method
Part 2 Test environment for molded and extruded pipes A.4ISO 2913,1994
Preparation of mechanically processed specimens
GH/T14152—2001
Test method for external convexity resistance of thermoplastic pipes eq1S312?
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