This standard specifies a method for determining the dimensional change of fabrics after static cold water immersion and drying. This standard is applicable to the determination of dimensional change of fabrics after static cold water immersion during use. GB/T 8631-2001 Determination of dimensional change of textile fabrics caused by cold water immersion GB/T8631-2001 Standard download decompression password: www.bzxz.net

1: 59.080. 01
National Standard of the People's Republic of China
C86312001
cq1so7771.1985
Textiles-Delermination of dimensional chargesof fabrics induced by cold-water immersion2001-02-26 Issued
2001-09.01 Implementation
Issued by Mongolian Quality and Technical Supervision Bureau
CB/T8531-2008
This standard is based on TS 150777-1985:-Determination of dimensional changes of textiles caused by cold water? TS 8631-1988 is revised. The revised text is equivalent to TS 0777:1085
This standard has the following two changes to GB/T 8632-1988: 1. Added the foreword and IS foreword, and increased the number of references to the standard. 2. The corresponding foreign language test names in the definition of the third part are added. The second half of Chapter 1 Principles of Technology is changed to “Calculation of length extension and/or change of size”. 1.2 is changed to “Measurement of length, size and measurement”. 5.3 is changed to “The method of marking the specimen shall be in accordance with the provisions of GR/868”. 5..2 The name mark is at least 35m away from the edge of the pattern and about 6m at both ends of the test fence. Omit (or other false water absorption grid
E, E? Add and reduce the sitting; R3 supplements the strict clauses and notes. 7. Chapter 4 is changed to\Calculate the percentage change of each individual dimension in each direction and the average percentage change of the dimension, and record the average dimensional percentage accurately to the instrument. "
This standard replaces 861-1S from the actual situation.
This standard is implemented by the State Textile Industry Bureau
This standard is standardized by the National Textile Standardization Technical Committee. The Textile Industry Technical Supervision Institute and the Textile Industry Standardization Research Institute are responsible for the preparation of this standard. The main drafters of the rate standard are: Shu Wan and Pan Jinzhu. This standard was issued in 108R and was standardized in 2001 as GB/T 8631—2CC1
ISO Foreword
TS() (International Organization for Standardization) is an international association of national standards organizations (SC) member bodies. The work of developing international standards is carried out through technical committees. Each member body has the right to send representatives to the technical committees established by ISC. Non-international organizations affiliated with ISC may also cooperate with TS. The technical committees shall propose the following standard: Before the industry association approves it as an international standard, it will be distributed to all members for submissions. After the completion of the above method, it will be issued as an international standard. International Standard S07771 is formulated by IS>/TCAR Textile Technology Committee. It is a national standard of the People's Republic of China. Textiles. Determination of dimensional changes of fabrics caused by cold water immersion. Textiles--Deleruimtion of dry chunges of fahries after immersion in cold water. This standard specifies a method for determining the dimensional changes of fabrics after being dried in a state of water. This standard is used to determine the dimensional changes of fabrics after being subjected to cold water static immersion during use. 2 Reference standards GB/1 8631—2001
q150777:1985
Compared to GT6E21--1983
The following standards contain provisions that are used in the wood cup standard as the text of the wood standard. At the time of publication of this standard, the versions shown are valid: All standards will be revised to discuss the feasibility of the new version of this standard. GB552:186 Standard for the test of fabrics and humidity and atmosphere G 2R-2001 Preparation, marking and measurement of dimensional changes of textiles 3 Definitions
This standard adopts the following definitions:
Dimensional change
The test piece is not the same size as the lower diameter of the test piece after operation. 4 Treatment
The test piece is cut from the selected product, and after conditioning, it is measured under specified conditions. After conditioning, it is re-wetted and measured. The length and width of the test piece are calculated.
5 Equipment and reagents
5. A watertight plate or piercing apparatus with a depth of about 100 mm and a surface area of ​​​​about 100 mm should be used to place the test piece underwater without folding. 5. The test piece should be placed in a watertight plate or piercing apparatus with a depth of about 100 mm and a surface area of ​​​​about 100 mm.
5.3 The method of marking on the test piece shall be in accordance with the provisions of (H/T823) 5.4 The size of the two central plates shall not be less than 00mm and 50mm thick. MX: 55: The equipment for producing and maintaining the approved popularity of the textile product reverse test is shown in the 6th rate! 5.6 The equipment shall be sodium aldehyde or polyphosphate.
5. The high number of wetting agents.
) The material shall be: mono-, di- or undecyl quaternary sodium. State Administration for Quality and Technical Supervision, approved 2001-C2-26, implemented 2001-C9-D1. Humidification and test with standard atmosphere. The test should be carried out in accordance with 36529. 7. Test specimens. 7.1 Test details. T8631-7CC1. Wide fabrics shall be tested according to 7.2. For narrow fabrics, the test pieces shall be at least 300mm×500mm: the pieces can be folded and torn. The sides shall be parallel to the length of the fabric. The pieces at both ends shall be taken within 1m. The specimens shall not include the selvedge. The knitted fabric sample should be made into a double layer, and the loose edges should be aligned with a ruler. When the test fabric has a knitted fabric structure, the bottom should be as complete as possible. Each sample should be wrapped with a complete knitted fabric ring: three pairs of marks should be made in the length and width direction of the sample. The distance between each pair of marks is 35mm (Figure 1). Each mark is 3mm from the center of the test edge and 5mm from the west end of the sample. The measurement points of the test fabric sample are shown in Figure 1. 7.3 The test fabric sample is taken as a whole, and the length is less than 5mm. Do not make two inline samples in the weft. According to the width of the fabric, one or more pairs of marks should be made in the warp direction of each test piece, as shown in Figure 2. Each mark point is about 50mm from both ends of the sample.
Single imm
Sampling point marking for hazardous materials
2 Flux point marking for narrow width material samples
7.4 Sample marking method
GR/T3631—2001wwW.bzxz.Net
h) c rt
--25 m tissue sample measuring station needle mark
) double 252hl--500m energy system material standard point marking Figure 2 (end)
Mark the samples according to the provisions of GB/T862
7.5 Humidity
Expose the sample to the standard atmosphere for natural product testing for at least 12 hours.7.6 After retreating, spread the sample on a broken board (5.4) under high tension, and place a glass plate or a glass plate on the sample. The plate and well shall be recorded in the corresponding year and marked with a reference. Note: 8. Operation procedure || tt || day. 1. Place the sample after measurement in a water tank or a container (5.1). 2. Add 0.3 mA/% high-efficiency test filter to the water according to the content of the substance (calculated according to the content of the substance). The water should be 13-20% full. The water should be soft water or the hardness should not exceed 10%. For every 10,000 ppm of calcium carbonate, add 15%/.6% sodium phosphate. 5.5. The liquid level should be at least 25 mm above the test surface. If necessary, a small piece of material (the lighter the better) can be placed around the sample to facilitate the sample setting.
After 22 days, take the sample out of the box or container and lay it flat on a towel. Be careful not to fold the sample according to the requirements. The best way is to lift the sample from the bottom to the towel so that the whole sample is on the surface. Then gently wipe off the excess water with the card. B3 Place the sample on a light surface and dry at 3°C ​​for 20 minutes. Note: For absorbent or water-absorbing materials, you may need to dry them more effectively. For example, place them on a relatively open rack. The shortest drying method used will be recorded in the test report. 84 Place the sample in the standard atmosphere for textile testing and adjust the logic until equilibrium is reached. Press 7.6 Determine the distance between the corresponding marks, 9 The result indicates
GHT8631—2001
Calculate the percentage change of each dimension and the average percentage change of the dimension in each direction, and record the average length change, and make sure it is [%.
10 Test report
The test report contains the following steps:
R) The test is carried out in accordance with this standard.
1 The sample is cut to the width of the object and the test sample is effective. () The average size change of the fabric length is gradually affected by the force, and the average size change rate of the fabric length is gradually affected by the force. The positive state indicates the length of the fabric, and the negative state indicates the shrinkage.
) The steps of the test are as follows:
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.