1 Range

This standard specifies the technical requirements, test methods, inspection rules, packaging, transportation and storage of anaerobic adhesives.

This standard is applicable to anaerobic adhesives.

2 Normative reference documents

The terms in the following documents become terms of this Standard by reference to this Standard. All subsequent amendments (excluding errata) or revisions to dated citations are not applicable to this Standard; however, parties to an agreement under this Standard are encouraged to examine whether versions of these documents can be used. References that are not dated shall be applicable to this Standard.

GB/T18747.1-2002 Determination of torque strength of anaerobic adhesives (threaded fasteners)

GB/T18747.2-2002 Determination of shear strength of anaerobic adhesives (shaft and ring test method)

HB/T5313-1993 Test method for liquid sealability of anaerobic adhesives for aviation

HB/T5323-1993 Test method for viscosity of anaerobic adhesives for aviation

3 Technical Requirements

The technical requirements of each series of anaerobic glue are specified in the table

Technical requirements for anaerobic thread locking seal series (Table 1)

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Technical requirements for anaerobic flat seal series (Table 2)

Technical requirements for anaerobic pipe thread seal series (Table 3)

Technical requirements for anaerobic cylindrical holding series (Table 4)

(1) The standard test conditions are: temperature is (23±2) ℃, relative humidity is 45%-55%

        (2) The strength is measured after curing for 24h-26 h under standard environmental conditions.

4 Test methods

4.1 Appearance

Take a little anaerobic adhesive at room temperature, visually, uniform, no mechanical impurities.

4.2 Determination of initial fixation time

Under standard conditions, the anaerobic glue is applied to the standard specimen, and the specimen is assembled, and the hand cannot be twisted or fixed within the specified initial fixation time

Bit, that is, the initial solid. Standard test pieces for thread locking, flat seal and pipe thread seal series are M10 (10-25) bolts and nuts; The standard parts of the cylindrical holding series are 45# steel bushing fittings with diameter of 15mm× thickness of 10mm× clearance of 0.025mm.

4.3 Measurement of viscosity

The uncured anaerobic adhesive was used for determination according to the test method of HB/T5323-1993 anaerobic adhesive for aviation.

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4.4 Measurement of torque strength:

The standard specimen (bolt) was bonded, cured for 24h-26h under standard conditions, and determined according to GB/T18747.1.

4.5 Determination of static shear strength of shaft sleeve

The cylindrical fixation series is bonded with standard specimens (shaft sleeve), cured for 24h-26h under standard conditions, and determined according to GB/T18747.2.

4.6 Determination of sealing pressure:

Test according to HB5313 to determine the seal pressure.

4.7 Determination of storage stability:

a) Place the sample in a constant temperature water bath, hold at 80℃ for the corresponding time, and open the sample bottle; b) Remove the sample from a constant temperature water bath

Remove from the pot and observe whether the sample has gel, caking, curing and other phenomena.

5 Inspection Rules

The anaerobic adhesive products produced in the same reactor shall be determined as one batch, and each batch shall be sampled for inspection. After the production of anaerobic rubber in the turnover bucket sampling, each batch sampling amount should not be less than 200ml. Appearance, viscosity, initial solid time and storage period are factory inspection items, and the rest are type tests.

Type tests shall be conducted in any of the following cases:

a) When the product is produced in a new factory;

b) When there are major changes in structure, material and process, which may affect product performance;

c) When the product is discontinued for a long time and production is resumed;

d) When the factory inspection results are significantly different from the last type test;

e) When requested by the quality supervision authority.

If an index does not meet the standard, it is necessary to redouble the sample, and if there is still an index that does not meet the standard during the reinspection, this batch of products is unqualified products.

6 Packaging, marking, transportation and storage

6.1 Packaging

This product is 10g/bottle, 50g/bottle and 250g/bottle and other specifications packaging, can also be determined according to user requirements. Plastic bottles need to use good breathable polyethylene plastic bottles. There should be enough space to ensure sufficient air (oxygen) in the bottle. The outer packing is in corrugated cartons.

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6.2 Flags

This product should be marked with Fengshen or Yibaijiu trademark, product name, brand, method of use, net content, production date, batch number, implementation standard, shelf life, etc. Each batch of products shall be accompanied by a certificate of conformity.

6.3 Transportation

This product is in liquid state, and in plastic bottle packaging, transportation, storage, placement and transportation should not be inverted, should prevent collision, do not be

Puncture with a sharp instrument. Protect against rain and sun exposure.

6.4 Storage

The anaerobic adhesive is stored in a dry environment at 25℃ with a shelf life of one year.