MH/T 6058-2017Cleaner, aircraft carpet (English PDF)

3.1 Ingredients

The cleaning agent formula is determined by the manufacturer, and the product performance should meet the requirements of 3.2.

3.2 Performance

3.2.1 General

The cleaning agent should meet the corresponding requirements of 3.2.2~3.2.9 (Type B may not meet the requirements of 3.2.8), and the original solution and preparation of the cleaning agent should be processed according to the specified method.

The concentration diluent recommended by the manufacturer (if it needs to be diluted when used) is tested, and a third-level laboratory that meets the requirements of GB/T 6682 should be selected.

Water acts as a diluent.

3.2.2 Solubility

The cleaning agent should be easily soluble in prepared water and third-grade laboratory water that meets the requirements of GB/T 6682, without visible precipitation.

Pour 1 ml of cleaning agent and 99 ml of tertiary laboratory water that meets the requirements of GB/T 6682 into a 100 ml stoppered glass measuring cylinder Make diluent in the medium, then pour 1 ml of cleaning agent and 99 ml of prepared water into another 100 ml stoppered glass graduated cylinder to make another dilution Liquid, let the two measuring cylinders stand for more than 1 h, and then check for precipitation and other insoluble matter. The prepared water is shown in Table 1.

3.2.3 Flash point

According to GB/T 261, the flash point of the cleaning agent should not be lower than 60 °C (140 °F).

3.2.4 Corrosion to metal surfaces

3.2.4.1 Interlayer corrosion

The test is carried out according to MH/T 6071, the test piece material is AMS 4045 and AMS 4049 aluminum alloy, the original solution of the cleaning agent and the dilution of the use concentration the release of the liquid should not exceed the degree of corrosion of the test piece by the third grade laboratory water of GB/T 6682.

3.2.4.2 Full immersion corrosion

According to MH/T 6059, the original solution and diluent of the cleaning agent should not cause AMS 4037, AMS 4045 and AMS 4041 (or AMS

4049) Aluminum alloy has discoloration or pitting corrosion, and its average mass change does not exceed 0.3 mg/cm2 every 24 hours.

3.2.5 Impact on transparent plastics

3.2.5.1 According to MH/T 6067, the original solution and dilution of the cleaning agent should not be made of polyacrylic acid that meets the requirements of MIL-P-25690.

Ester plastics have adverse effects such as silver streaks, scars or fading.

3.2.5.2 Carry out the test in accordance with MH/T 6067, apply a stress of 13.8 MPa (2 000 psi) to the test piece for 10 min±1 min, the cleaning agent should not cause silver streaks, scars or fading to the polycarbonate plastic that meets the requirements of MIL-P-83310.

3.2.6 Effects on painted surfaces

Test according to MH/T 6065, the concentration of cleaning agent used should not reduce the hardness of the coating by more than two pencil hardness levels, and there is no scratch, Fading or other damage.

3.2.7 Impact on carpet

3.2.7.1 Fading

The concentration of the cleaning agent should not make the carpet in accordance with MH/T 6060 fade or produce other adverse effects, nor should it cause the tufting of the carpet to be removed the force drop exceeds 4.5 N (1 lb).

Cut two carpet samples with dimensions of approximately 152 mm × 305 mm (6 in × 12 in) from adjacent areas of the same carpet. One piece for in the same way, the other piece was sprayed evenly with 25 ml-50 ml cleaning agent of use concentration, dried at room temperature for 24 h ± 1 h and compared with the control sample.

Check whether it fades, whether the adhesive swells, and other adverse effects. A push-pull dynamometer with a range of 225 N should be used, according to ASTM D 1335 to test the pulling power of carpet tufting, the control sample and the sample treated with the cleaning agent are tested at four points, and then the average value is taken. The difference should not exceed

4.5 N.

3.2.7.2 Washing resistance and color fastness

Test according to AATCC test method 138, and the conformity assessment standard is determined by the buyer.

3.2.7.3 Flame retardancy

After cleaning the carpet with the concentration of cleaning agent for 10 times, perform the flame retardant test according to Appendix A. The carpet after cleaning should not change the burning rate.

rate.

3.2.7.4 Dirt resistance

According to ISO 11378-2, the carpets that have been cleaned with the concentration of cleaning agent are tested, and the results should be equal to or better than those proposed by the buyer Claim.

3.2.8 Foam height (only applicable to Type A cleaning agent)

Put 100 ml of a cleaning agent with a temperature of 38 °C ± 1 °C (100 °F ± 2 °F) and a concentration of 2% (use a three-level solid that meets the requirements of GB/T 6682) Dilute with water in the laboratory) Pour into a 500 ml stoppered glass measuring cylinder, shake vigorously for 10 s ± 1 s and then read immediately. The foam height should not exceed 250 ml mark, the foam height should not exceed 150 ml mark after standing for 1 min.

3.2.9 Storage stability

Carry out the test according to MH/T 6085, there should be no precipitation and stratification.

3.3 Appearance

The cleaning agent received by the buyer should be uniform in color, free of crusting, agglomeration, and foreign matter that may affect the use.

4.1 Testing responsibilities

Before the products leave the factory, the manufacturer shall carry out all the required inspections for all products and attach the product inspection certificate. The buyer has the right to Carry out sampling inspection to ensure that the product meets the requirements of this standard.

4.2 Inspection type

4.2.1 Acceptance inspection

The manufacturer shall perform full immersion corrosion (3.2.4.2), impact on transparent plastics (3.2.5), foam height (3.2.8, not applicable to B-type cleaning agent), the impact on carpet (3.2.6, not applicable to A-type cleaning agent) inspection and appearance inspection (3.3).

4.2.2 Trial production inspection

All indicators should be tested. The trial production inspection should be completed before the cleaning agent leaves the factory, and the inspection results should be provided to the buyer.

If the raw material or production process changes, it should be re-inspected, or if the buyer requires compliance verification, the trial production inspection should be re-inspected.

4.3 Sampling

Sampling is carried out according to ASTM D 1568.The samples should be taken from the products continuously produced in the same batch of raw materials and inspected with the manufacturer Remove at the same time.

If other statistical sampling methods are approved by the buyer and seller, they can also replace the sampling method of ASTM D 1568, but they should be included in the report List this method.

4.4 Report

The seller shall provide an inspection report for each batch of cleaning agent, showing that the inspection results meet the requirements of acceptance inspection, and list the other His technical requirements. The report should include the product standard number, cleaning agent type, buyer order number, product batch number and quantity.

The material safety technical specification that meets the requirements of GB/T 16483 should be submitted to the buyer in advance or at the same time as the trial production inspection report.

If the trial production inspection is abandoned, it will be provided to the buyer at the same time as the first batch of goods. The corresponding material safety technical specification should be attached when the cleaning agent formula is changed.

4.5 Re-sampling and inspection

If the sample taken cannot meet the requirements of this standard in the above inspection, another three samples shall be taken from the original sampled batch of products for inspection.

If any of them cannot meet the requirements of this standard, the batch of products will be rejected.

All inspection results should be reported.