Talc Filled Weather Resistant Polypropylene (PP) Resin Quality For KIA MS213-70 Hatch Top Cap

The standard “KIA MS213-70 Talc-filled Weather-resistant Polypropylene (PP) Resin Quality for Hatchback Cap” developed by Hyundai-Kia Motors Corporation, the oldest motor vehicle manufacturer in Korea, describes a procedure for determining the quality of talc-filled weather-resistant Polypropylene (PP) resin for hood back cap used in vehicles. Polypropylene is a thermoplastic polymer that is widely used in the automotive industry.

This material is applied to external parts that need long-term weather resistance. Talc-filled weather resistant Polypropylene (PP) resin is classified into two types of material as defined in the table titled “Types and classification” provided in the standard:

• Type A: Talk content 40 percent, cover headline
• Type B: Talk content 20 percent, cover headline

The general requirements in this standard are described as follows:

• Parts using this material must comply with all requirements of the relevant assembly performance standard.
• The chemical composition and processing conditions should not be changed inappropriately, which may affect the quality of the parts.
• Before changing the chemical composition of the material, it is mandatory to consult with the materials and quality control departments.
• Final parts made from this material must be free from defects, uneven shine, burn marks, warpage, silver streak, cracks, uneven color, flow marks, weld lines, sink marks or other defects.

This material is tested by the methods defined in the standard and must comply with the conditions specified in the table.

In general, the standard condition of the laboratory for tests is 23 degrees plus/minus 2 degrees temperature and 50 percent plus/minus 5 percent relative humidity. After production, samples should be stored in the standard condition specified above for at least 48 hours.

The following standards are followed for melt index:

• “ISO 1133 Plastics - Determination of melt mass flow rate (MFR) and melt volume flow rate (MVR) of thermoplastics”.
• “ASTM D1238-10 Standard test method for melt flow rates of thermoplastics by extrusion plastometer”.

The following standards are followed for specific gravity:

• “ISO 1183-1 Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion method, liquid pycnometer method and titration method”.
• “ASTM D1505-18 Standard test method for density of plastics based on density gradient”.

The following standards are followed for tensile strength and elongation:

• “ISO 527-1 Plastics - Determination of tensile properties”.

The following standards are followed for sample type:

• “ISO 3167 Plastics - Multi-purpose test specimens” (specimen type Type A, test speed 50 mm/min).
• “ASTM D638-14 Standard test method for tensile properties of plastics” (specimen type Type 1, test speed: 50 mm/min).

The following standards are followed for flexural strength and modulus:

• “ISO 178 Plastics - Determination of flexural properties” (specimen size 80,0 × 10,0 × 4,0 mm, span length 64 mm, test speed: 2 mm/min).
• “ASTM D 790 Standard test methods for flexural properties of unreinforced and reinforced plastics and electrical insulating materials” (specimen size 127,0 × 12,7 × 6,4 mm, test speed: 30 mm/min).

The following standards are complied with for Izod impact resistance:

• “ISO 180 Plastics - Determination of Izod impact strength” (sample type Type A, sample size 80 × 10 × 4,0 mm (notched), hammer 2,94 J).
• “ASTM D256-23 Standard test methods for determining the Izod pendulum impact resistance of plastics” (specimen size 63,5 × 12,7 × 6,4 mm (notched), hammer 2,94 J).

The following standards are followed for thermal distortion temperature:

• “ISO 75-1 Plastics - Determination of deflection temperature under load” sample size 80 × 10 × 4,0 mm, flat method, tensile load: 0,45 MPa)”.
• “ASTM D648-06 Standard test method for deflection temperature of plastics under bending load in axial position” specimen size 127 × 12,7 × 6,4 mm, tension load 0,45 MPa”.

The following standards are followed for Rockwell hardness:

• “ISO 2039-2 Plastics - Determination of hardness - Part 2: Rockwell hardness”.
• “ASTM D 785 Standard test method for Rockwell hardness of plastics and electrical insulating materials” (specimens R scale).

The following standards are followed for weatherability testing (these tests take precedence over artificial weatherability testing):

• “KIA MS210-06 Molded plastic parts - Outdoor use”.
• “ASTM G147-02 Standard practice for conditioning and processing of nonmetallic materials for natural and artificial corrosion testing”.
• “ASTM G90-17 Standard Practice for Accelerated Outdoor Etching of Nonmetallic Materials Using Concentrated Natural Sunlight.”

Additive contents and types: The resin supplier must indicate the additive contents and types in the data sheet and cannot change the additive contents and types without permission. The analysis of additive contents and types is based on the standards “ASTM D7210-21 Standard Practice for Removal of Additives in Polyolefin Plastics” and “ASTM D6953-18 Standard Test Method for Determination of Antioxidants and Erucamide Slip Additives in Polyethylene Using Liquid Chromatography (LC)”.

For Fourier transform-infrared spectroscopy (FT-IR), the following standard is followed:

• “KIA MS200-61 Test standard - Plastic standard analysis”.

The following standard is followed for the thermal gravimetric analyzer (TGA):

• “KIA MS200-61 Test standard - Plastic standard analysis”.

For differential scanning calorimetry (DSC), the following standard is followed:

• “KIA MS200-61 Test standard - Plastic standard analysis”.

Our organization has a strong staff that closely follows the developments in the world in the field of science and technology and constantly improves itself. Among the numerous test, measurement, analysis and evaluation studies provided for businesses in various sectors, there are also test services in accordance with the standard of "KIA MS213-70 talc-filled, weather-resistant polypropylene (PP) resin quality for the upper cover".