The standard “MBN 51000-7 Polymer-based materials, material systems and semi-finished products - Part 7: Resistance tests” developed by the Mercedes Benz Group describes test methods to assess the resistance of polymer-based materials such as plastic, foam, textile and leather used in automotive interiors against various environmental and chemical effects.
The main test methods described in this standard are:
The test for resistance to abrasion against maintenance products aims to evaluate the resistance of automotive interior materials to abrasion caused by chemical products used during cleaning and maintenance. This test is particularly applicable to polymer-based materials such as plastic, leather, artificial leather and textiles. The purpose of this test is to determine whether the surfaces inside the vehicle have suffered structural or visual deterioration as a result of contact with cleaning and maintenance products frequently used by users (e.g. cockpit cleaners, polishes, disinfectants). At the end of the test, no deterioration in the appearance or functionality of the material should be observed at a level that would affect its service life. The standard specifies in detail how this assessment is scored or classified.
Stress crack resistance testing on unpainted plastic parts is a test used to evaluate the resistance of plastic components to stress cracks under environmental influences (especially humidity and temperature changes) and mechanical stress. This test is critical in the automotive industry to ensure the longevity of interior components.
At the end of the test, if no stress cracks occur on the unpainted plastic material or if the cracks that do occur are minimal enough to not seriously affect the life of the material, the test is considered successful. Excessive cracking, breaking or deformation of the plastic material will cause the test to be considered unsuccessful.
Unpainted plastic parts can be exposed to various external factors in the vehicle interior. This test aims to measure the material's resistance to environmental stresses and its level of resistance to cracking. In particular, it is observed how plastics behave during cleaning or maintenance, or when exposed to direct sunlight, humidity or temperature changes.
This test is used specifically in the following areas:
The abrasion and contact resistance test against sunscreen test substance aims to evaluate the abrasion and deformation that may occur in automotive interior materials as a result of contact with products such as sunscreen. This test is used to test the resistance of plastics, leather, fabric and other surfaces in vehicles against chemicals such as sunscreen. Such chemicals are substances that can come into contact frequently in vehicle interiors and are an important test for the long-term durability of materials.
Sunscreen usually contains oils, alcohol and various chemicals. When these substances come into contact with the materials inside the vehicle, they can cause adverse effects such as softening, discoloration, abrasion or deformation on the surface. This test is performed to determine how resistant the materials are to such chemical effects.
These tests are considered successful if no adverse effects such as excessive wear, discoloration, or deformation are observed on the material, or if these effects remain at a level that does not affect the functionality of the material. Observation of minimal damage or deformation on the surface indicates that the test was successful.
These tests are particularly important for surfaces in the vehicle interior:
These tests are widely used in the automotive industry to determine the durability of materials that come into contact with chemical products such as sunscreen.
The MBN 51000-7 standard is used for the purpose of quality control and assessment of conformity of materials used in the automotive sector, especially in vehicle interiors. This standard helps design long-lasting and safe products by testing the resistance of materials to chemical and physical effects that may be encountered in daily use.
Our organization, which has been trying to support businesses from every sector with its testing, measurement, analysis and evaluation studies carried out in a wide range for years, has a strong staff that closely follows the developments in the world in the field of science and technology and constantly improves itself. In this context, testing services in accordance with the "MBN 51000-7 Polymer-based materials, material systems and semi-finished products - Part 7: Resistance tests" standard are also provided to businesses.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
