NB/SH/T 0909-2015 Test method for peel strength of special wax for poultry dehairing

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Card type: Test method

1. Method number / full name / English name / replacement relationship

• Standard number: NB/SH/T 0909—2015
• Chinese name: Test method for peel strength of special wax for poultry dehairing
• English name: Standard test method for peel strength of poultry defeathering wax
• Replacement relationship: This standard is first published (not provided in the available source regarding replacement of other standards)
• Publication/implementation: published on 2015-10-27, implemented on 2016-03-01
• Issuing unit: National Energy Administration
• Custodianship: Subcommittee on Petroleum Wax Products of the National Technical Committee for Standardization of Petroleum Products and Lubricants (SAC/TC280/SC3)
• Drafting units: Jiangsu Taier New Material Co., Ltd., New Hope Liuhe Group
• Drafters: Li Yi, Liu Jiafang, Zeng Liqiang, Zhang Jichun, Wang Mei, Zhao Jingquan, Ge Baochang

2. Scope of application and non-applicability

• This standard specifies the test method for peel strength of special wax for poultry dehairing.
• This standard applies to special wax for poultry dehairing.
• Non-applicable scope: not provided in the available source.

3. Method principle

Two pieces of surface-wetted terry cloth are immersed in a liquid special wax sample for poultry dehairing; after removal, they are placed horizontally overlapping to prepare a bonded test specimen, then the specimen is peeled apart from the bonded open end at a specified rate; the ratio of peel force to specimen width is the peel strength. (Original Chapter 4)

4. Reagents and materials (purity / preparation)

• 5.1 Terry cloth for test specimen: meets the requirements of GB/T 22864. Fabrication dimensions: length 300 mm±1 mm, width 25 mm±1 mm. (The original "[garbled compliance wording]" and "54 requirements" are source-text extraction noise, corrected according to GB/T 22864 and context, requires confirmation against the source standard (source-text extraction))
• 5.2 Distilled water: meets the grade three water requirements in GB/T 6682 Specifications and test methods for water for analytical laboratory use. (The original "CB/T 54" is source-text extraction noise, requires confirmation against the source standard (source-text extraction))

5. Instruments and equipment

• 6.1 Hot-tack tensile testing machine: a device with a load range of 0 N to 200 N, whose grips can separate at a constant rate and apply tensile force, with a tensile stroke of 300 mm or more, equipped with a force measurement system, indication recording, and peel strength calculation system. The force indication error shall not exceed 2%, and the failure load of the specimen shall be between 10% and 80% of the full-scale load.
• 6.2 An instrument that can achieve test effects equivalent to 6.1 may also be used.
• 6.3 Constant-temperature oven: temperature control can reach 80 ℃ or above, control accuracy ±1 ℃. (The original "[unreadable sign]1%" is suspected to be source-text extraction noise, requires confirmation against the source standard (source-text extraction))
• 6.4 Constant-temperature and constant-humidity chamber: temperature control accuracy ±1 ℃; humidity control can reach 98%RH or above, control accuracy ±4%RH. (The symbol before "4%RH" in the original is missing, requires confirmation against the source standard (source-text extraction))
• 6.5 Measuring tool: measuring length not less than 200 mm, minimum scale not greater than 1 mm.
• 6.6 Scissors: only the word "scissors" appears in the original; specific specifications are not provided in the available source.

6. Recommended operating conditions

• Wax liquid temperature: 80 ℃±1 ℃ (Article 7.1)
• Constant-temperature oven temperature: 80 ℃±1 ℃ (Article 7.1)
• Ambient temperature: 25 ℃±1 ℃ (Articles 7.2, 7.4)
• Ambient humidity: 95% to 98% (Article 7.2)
• Grips separation rate: 100 mm/min±10 mm/min (The original "100 wm/mint10 mm/min" is source-text extraction noise, requires confirmation against the source standard (source-text extraction))

7. Sampling and specimen preparation

• 7.1 Heat and melt the special wax sample for poultry dehairing, ensuring the wax liquid thickness is not less than 200 mm, maintain the temperature in a constant-temperature oven at 80 ℃±1 ℃, standing time not less than 60 min. ("wax liquid thickness not less than 200 mm" is suspected to be source-text extraction noise, requires confirmation against the source standard (source-text extraction))
• 7.2 Control temperature 25 ℃±1 ℃, humidity 95% to 98%, standing time not less than 30 min or more. (The original "25 °CH1", "°11 C", etc. are source-text extraction noise, requires confirmation against the source standard (source-text extraction))
• 7.3 At an ambient temperature of 25 ℃±1 ℃, quickly immerse two pieces of terry cloth vertically into the wax liquid, immersion length not less than 150 mm, hold for 5 s to 6 s, remove and place horizontally overlapping for not less than 5 min, then place the two fully solidified pieces of terry cloth into a constant-temperature oven, maintain 25 ℃±1 ℃, 30 min or more. (The original expression "remove within 5s~6 s" requires confirmation against the source standard (source-text extraction))

8. Analytical procedure

• 7.4 At an ambient temperature of 25 ℃±1 ℃, symmetrically clamp the specimen in the two grips of the hot-tack tensile testing machine. Start the testing machine so that the two grips separate at a rate of 100 mm/min±10 mm/min.
• 7.5 The peel length of the specimen shall be at least 125 mm; the recording device simultaneously plots the peel load curve and displays the peel strength value. Observe and record the surface condition of the specimen, namely adhesive failure, cohesive failure, or adherend failure.

9. Qualitative and quantitative determination and calculation formula

• 8.1 Peel strength is calculated according to formula (1): peel strength = peel force / specimen width. (The formula symbols in the original are missing, requires confirmation against the source standard (source-text extraction))
• 8.2 For a typical peel force curve of the specimen, in the region of 25 mm to 125 mm, the difference between the maximum value F_max and the minimum value F_min of the peel force shall not be greater than 5 N; the data automatically recorded by the hot-tack tensile testing machine respectively include average peel strength, minimum peel strength, and maximum peel strength.
• Figure 1 Typical peel force curve: the abscissa is peel length/mm (0, 25, 125), and the ordinate is force/N. (The data in the original figure caption are incomplete, requires confirmation against the source standard (source-text extraction))
• 8.3, 8.4 The original source-text extraction is severely missing; only residual characters such as "peel", "all", "same", and "test failed" are visible. The specific content is not provided in the available source, requires confirmation against the source standard (source-text extraction).
• Term definitions (Chapter 3):
  • 3.1 Specimen surface condition: adhesive failure means the wax film separates from the terry cloth; cohesive failure means the wax film breaks without separation from the terry cloth; adherend failure means the terry cloth is damaged.
  • 3.2 Forms of peel strength: average peel strength means the ratio of average peel force to specimen width; minimum peel strength means the ratio of minimum peel force to specimen width; maximum peel strength means the ratio of maximum peel force to specimen width.
  • 3.3 Test failure: the indication that test data meeting the requirements could not be obtained according to the method of this standard.

10. Precision

The original Article 8.4 and the latter part of Chapter 9, source-text extraction, are severely missing; only residual characters such as "average value", "exceed", "0.20", "kI", "m", "within", "calculate", "average", "also exceeds the deviation range", "indicates that the test", and "arithmetic mean of" are visible, and the complete precision clause cannot be restored. The specific content of precision is not provided in the available source, requires confirmation against the source standard (source-text extraction).

11. Report

The original Chapter 9 is titled "Report", but the main text source-text extraction is severely missing, with only residual characters visible; the specific content of the report is not provided in the available source, requires confirmation against the source standard (source-text extraction).

12. Normative references

• GB/T 6682 Specifications and test methods for water for analytical laboratory use
• GB/T 22864 Towel
• GB/T 1.1—2009 Drafted according to the rules given (foreword reference)

13. Source and verification

This page is an AI translation of the available Chinese method card. Human verification is pending. It is not an official translation of the standard. Check the source standard and product certificate before use.

14. Quick Q&A