GB/T 39805-2021Insulating glass used on multiple units (English PDF)

3.1 Datumedge

The bottom of the glass when it is installed on the vehicle.

3.2 Dewpoint

The temperature at which condensation or frost begins to occur in the hollow glass cavity.

5.1 Glass

Can use flat glass, coated glass, laminated glass, tempered glass, fireproof glass, semi-tempered glass, etc. The glass used should meet the corresponding standard requirement.

5.2 Edge sealing material

The sealing material for the edge of the insulating glass should meet the requirements of the corresponding standards, and should be able to meet the moisture and gas sealing performance of the insulating glass and be able to maintain The structure of the insulating glass is stable. The bonding performance of the sealant and the water vapor permeability of the edge sealing material are in accordance with the appendix of GB/T 11944-2012 B. The method of Appendix C is determined.

5.3 Spacer material

The spacer materials can be aluminum spacers, stainless steel spacers, etc., and should meet the requirements of relevant standards and technical documents.

5.4 Desiccant

The desiccant should meet the requirements of relevant standards.

6.1 Appearance quality

The appearance quality of insulating glass should meet the requirements of Table 1.

6.2 Dimensions and deviations

The size and deviation should meet the requirements of the design drawing. When the drawing has no deviation requirements, the size deviation should meet the following requirements.

a) The insulating glass is placed in working condition, the bottom edge of each piece of glass should be on the same horizontal surface, and the maximum allowable deviation of the reference edge should be small At 1mm;

b) The allowable size deviation of flat insulating glass is ±1.5mm;

c) The allowable deviation of curved single-curved insulating glass is ±3mm;

d) The allowable deviation of the length and width of other curved hollow glass shall be determined through negotiation between the supplier and the buyer.

6.3 Thickness and deviation

The allowable deviation of insulating glass with a nominal thickness of not more than 30mm shall meet the requirements of Table 2.Hollow glass with a nominal thickness greater than 30mm

6.13 Optical distortion angle

The optical distortion angle of flat hollow glass should not be less than 40°, and the optical distortion angle of curved hollow glass shall be negotiated by both parties.

6.14 Dew point

The dew point of insulating glass should be lower than -45°C.

6.15 Accelerated durability

After the test, the dew point of each sample should be lower than -40°C.

6.16 Emergency window glass escape test

The time for emergency window glass to form a safety exit should be less than 1 min.

7.1 Appearance quality

Test the products. Under good natural light or scattered light background lighting conditions, 500mm away from the front of the hollow glass, Check visually. When determining the diameter of the appearance defect, use a reading microscope with a magnification of 10 times and an accuracy of not less than 0.1mm to measure;

When the length of the defect is measured, use a metal ruler with an accuracy of not less than 0.5mm.

7.2 Dimensions and deviations

The size and deviation are tested according to the following methods.

a) Flat insulating glass is measured with a length instrument with a minimum scale of 1mm.

b) The size of curved insulating glass is inspected with a sample inspection tool, and the sample should be approved by both the supplier and the buyer. Unless otherwise specified, usually The empty glass is placed on the test fixture sample plate for inspection.

7.3 Thickness and deviation

Use an external micrometer with an accuracy of not less than 0.01mm in accordance with GB/T 1216 or an instrument with the same accuracy for measurement.

The rectangular hollow glass is measured at the midpoint of the four sides 15mm from the edge of the glass, and the arithmetic average of the measurement results is the thickness of the product; special-shaped hollow The glass measuring point is negotiated by the supplier and the buyer.

7.4 Curvature

The bending test steps are as follows.

a) Place the products to be inspected vertically according to the actual installation method.

b) Place a metal ruler conforming to GB/T 9056 horizontally to the sample.

c) Use a feeler gauge with a reading accuracy of not less than 0.1mm to determine the maximum gap between the straight edge of the ruler and the glass.

d) The bow shape is expressed as a percentage of the ratio of the height of the arc to the length of the string; in the waveform, the height from the valley to the peak and the peak to the peak (or The percentage of the ratio of the distance from the trough to the trough).

e) The two sides of the insulating glass should be measured separately, and the maximum value is taken as the curvature of the insulating glass.

7.5 Goodness of fit

Measure the curved product, place the product on the standard gauge (as shown in Figure 1), and use a plug with a reading accuracy of not less than 0.1mm Ruler measures the gap between the glass sample and the gauge.

7.6 Diagonal difference

Use a length gauge with a minimum scale of 1mm to measure.

7.7 Overlap

When two pieces of glass are of the same size, use a square ruler that meets the GB/T 6092 standard, and one of the right-angled sides is measured closely to the side of the hollow glass.

On the surface of a piece of glass, the other right-angled edge is closely attached to the periphery of the glass, and the plug scale is used to measure the maximum gap between the edge of the glass and the inside of the The large gap is used as the product stack difference.

When the sizes of two pieces of glass are different, measure the distance between the edge of the small glass and the edge of the large glass with the edge of the small glass as the reference.

The difference between the large distance and the minimum distance is regarded as the glass stack difference.

7.8 Quality

Use a scale with an accuracy of not less than 100g for measurement.

7.9 Resistance to gravel impact

Carry out the test according to the method specified in GB/T 32060. The sample should be kept at the required temperature for at least 12h. 3 consecutively were shocked If the sample is not broken, it is qualified, and up to 6 samples can be impacted at each temperature.

7.10 Anti-soft shock

7.10.1 Software requirements

Use a tightly tied leather bag with a diameter of 3mm glass balls and a total mass of 50kg as a soft object. See Appendix A for the schematic diagram of the software. As shown in A.1.

7.10.2 Test requirements

Use the product as a sample for testing. The impact height is 1.5m, and the impact form is swing impact. See Appendix B for impact and sample installation. test After the test, the sample is qualified if it is not penetrated. Three samples should be tested, and all three samples should be qualified. When the sample size is less than 400mm× When 400mm, use 400mm×400mm sample instead of test.

7.10.3 Installation of the sample

The specimens shall be tested for installation in accordance with Appendix B. The bracket for installing the sample is composed of 100mm×100mm aluminum profile, the sample and the profile Add a rubber plate in the middle of the contact surface. The thickness of the rubber sheet is 3mm, the width is 15mm, and the Shore hardness is shoreA70.Use 8 M20 bolts (Or C-type or F-type clamp) Clamp the sample with the pressure plate and the profile. The minimum torque of the bolt (or C-type or F-type clamp) is 30N·m.

The fixing method of the curved specimen shall be negotiated by the supplier and the buyer.

7.10.4 Test procedure

The test steps are as follows.

a) The sample should be tested after being placed for 4 hours under the temperature condition of 20°C±5°C;

b) Adjust the impact point, the soft impact point should be within 40mm of the center diameter of the sample;

c) If necessary, break the exterior glass of the sample with a suitable tool;

d) Lift the software in the manner specified in Appendix B;

e) After the software is stable, release the software for impact;

f) Only one impact per sample is allowed;

g) Check whether the sample is penetrated after impact.

7.11 Resistance to wind pressure fatigue

The sample should be a framed product, which should be tested according to the method specified in GB/T 32059, and one product of the same purpose and size should be tested.

7.12 Optical distortion

Take the product as a sample and test it in accordance with the method specified in Appendix C. Three products of the same purpose and size should be tested.

7.13 Optical distortion angle

Take the product as the sample, and test according to the method specified in GB 11614. The product of the same purpose and size should be tested 3 pieces.

7.14 Dew point test

Take the product as the sample, the sample is not less than 5, the test method is according to the dew point test method specified in GB/T 11944 or the electric refrigeration dew point test The meter performs the measurement.

7.15 Accelerated durability test

7.15.1 Sample

The sample is hollow glass with a size of about 500mm×350mm, and the number is not less than 6 pieces.

7.15.2 Test equipment

Meet the requirements of Appendix D.

7.15.3 Test procedure

After measuring the dew point according to the method of 7.14, start the test. The test process is as follows.

Carry out 42d moisture resistance and light resistance test according to the method of Appendix D, and then carry out 72 hot and cold cycle tests according to the method of Appendix D. most Then determine the dew point of the sample according to the method of 7.14.

7.16 Emergency window glass escape test

Carry out according to the method specified in GB/T 32056.