Test Background
The water resistance test mainly checks the actual performance of plastic parts in a high-humidity environment. Generally speaking, before the test, the parts need to be inspected by hand for dimensional measurement, visual inspection, looseness, hardness, etc. of the specified parts. The water resistance test of automotive plastic products can measure the changes in water absorption of products that are in direct contact with water during use.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various plastics and provides professional temperature resistance testing services for automotive plastic products.
Scope of tests
1. Polycarbonate plastic: lamps, instrument signs, sun visors, window glass, bumpers, etc.;
2. RIM plastic: bumpers, radiator grilles, spoilers, fenders, etc.;
3. Polyethylene plastic: damping materials for fenders, ceilings and doors, trunk mats, air ducts, gasoline tanks, etc.;
4. Polyvinyl chloride plastic: instrument panel cover, car roof lining, rear cover skin, spare tire cover, steering wheel, bumper cover, wire coating, etc.;
5. Polypropylene plastic: heating and ventilation systems, cabins, engine compartments, car bodies, light housings, tool boxes, wire terminals, junction box covers, silencers, etc.;
6. ABS plastic: rear fenders, instrument panels, radio covers, air exhaust pipes, steering wheel horn covers, grilles, rear guards, upper ventilation covers, wheel covers, blinds, brackets, mirror frames, etc.;
Test method
The sample pretreated under the standard test environment is immersed in a constant temperature test tank filled with water at 40±1°C or the actual working temperature, left for at least 200 hours, taken out, and wiped dry with a dry clean cloth.
Then let it cool for 1 hour in a standard environment, and inspect the sample according to the specified items.
Test standard:
QC/T 15-1992 General test method for automotive plastic products
G209 industrial sodium hydroxide
G252 light diesel
G435 gasoline engine oil
GB 484 car gasoline
G534 industrial sulfuric acid
GB 2918 Standard environment for conditioning and testing of plastic specimens
G5671 automotive general potassium-based grease
JB 3979 Automobile steering wheel test method
QC/T 17 General rules for weather resistance testing of automobile parts
SY 4005 No. 4604 synthetic brake fluid
