Hyundai Kia MS213-90 Quality Under-Cap Made of Polypropylene (PP) Resin with Environmentally Friendly Recycling Process

Developed by Hyundai-Kia Motors, the oldest motor vehicle manufacturer in Korea, the “Hyundai Kia MS213-90 Underbody Quality Made from Polypropylene (PP) Resin Obtained Through Recycling Process” standard defines underbody quality made from polypropylene (PP) resin obtained through an environmentally friendly recycling process.

The environmentally friendly recycling process describes the entire process of producing recycled material from automotive parts collected by Hyundai and Kia Motor companies' closed-loop recycling system. This process consists of crushing, removing the painted coating, cleaning and hardening, and restores its original properties without additional environmental pollution.

In the table titled “Authorized recyclable automotive waste” given in the standard, the authorized recyclable automotive waste by type and the content of recycled materials (percentage by weight) are given as follows:

• Type A: Rear bumper rear beam (minimum 20 percent) / PP-based end-of-life automotive parts (minimum 30 percent)
• Type B: Rear bumper rear beam (minimum 20 percent) / GF reinforced PP based end-of-life automotive parts (minimum 30 percent)
• Type C: PP-based end-of-life automotive parts (minimum 50 percent)
• Type D: Rear bumper rear beam (minimum 15 percent) / PP + low viscosity PP-based end-of-life automotive parts (minimum 35 percent)
• Type E: PP-based end-of-life automotive parts (minimum 50 percent)

In terms of general requirements, parts using this material must comply with all requirements of the relevant assembly performance specification. The chemical composition and processing conditions that may affect the quality of the parts should not be changed inappropriately. Before changing the chemical composition of the material, it is necessary to consult with the material and quality departments. The final parts made of this material should be free from defects, uneven gloss, burn marks, warpage, silver lines, cracks, uneven color, flow marks, weld lines, sink marks or other defects.

To determine the detailed requirements, this material is tested by the methods specified in the standard and must conform to the requirements specified in the table titled “Detailed requirements”.

The table below provides detailed requirements for the material:

• Melting index
• Specific gravity
• Pulling Power
• Elongation
• Bending strength
• Flexural modulus
• Izod impact power
• Heat distortion temperature
• Rockwell hardness
• Ash
• Flammability

This table contains detailed requirements for the part on the following basis:

• Thermal cycling resistance
• Cold impact resistance
• moisture resistance
• Fluid resistance

This table includes other detailed requirements on the following basis:

• Fourier transform-infrared spectroscopy (FT-IR)
• Thermal gravimetric analyzer (TGA)
• Differential scanning calorimetry (DSC)
• Heavy metals and harmful substances

In general, tests are performed in the following environment:

• The standard condition of the laboratory is 23 degrees plus/minus 2 degrees temperature and 50 percent relative humidity/minus 5 percent relative humidity.
• Standard condition of the test sample: Tests are performed on the samples immediately after a conditioning period of at least 48 hours in the standard condition specified above, at least 24 hours after molding.

It must comply with the following standards in terms of melt index:

• “ISO 1133-1 Plastics - Determination of melt mass flow rate (MFR) and melt volume flow rate (MVR) of thermoplastics Part 1: Standard method”.
• “ASTM D1238-13 Standard test method for melt flow rates of thermoplastics by extrusion plastometer”.

It must comply with the following standards in terms of 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 D792-08 Standard test methods for density and specific gravity (relative density) of plastics by displacement”.

It must comply with the following standard in terms of tensile strength and elongation:

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

In terms of sample type, it must comply with the following standards:

• “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).

It must comply with the following standards in terms of 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).

Izod must comply with the following standards in terms of 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).

It must comply with the following standards in terms of 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”.

It must meet the following standards 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).

It must meet the following standards in terms of ash content:

• “ISO 3451-1 Plastics - Determination of ash - Part 1: General methods”.
• “ASTM D5630-13 Paper and paperboard - Accelerated ageing - Part 1: Dry heat treatment at 105 degrees Celsius).

It must comply with the following standards in terms of flammability:

• “AD 300-08 Flammability resistance - Interior materials”.

Thermal cycle resistance: On the molded product, 3 cycles should be repeated according to the condition specified in the standard and should show conductivity according to the material type.

Cold impact resistance: The molded product is placed in a low temperature chamber at minus 3 degrees plus/minus 30 degrees for 2 hours. The sample is placed in the cement with a carrier, and a steel ball weighing 4,4 N and 50 mm in diameter is dropped from a height of 40 cm.

Humidity resistance: The molded product is kept at 336 degrees plus40-minus 7 degrees thermostatic and humidity and 2 percent relative humidity for 95 hours

Liquid resistance: The molded product sample is coated with liquids specified in the standard.

It must comply with the following standard for Fourier transform-infrared spectroscopy (FT-IR):

• FTIR spectroscopy: attenuated total reflection, measuring range 4.000 ~ 650 cm-1, scanning number 32 times).

In terms of thermal gravimetric analyzer (TGA), it must comply with the following standard:

• “ISO 11358 Plastics - Thermogravimetry (TG) of polymers”.
• “ASTM E1131-08 Standard test method for compositional analysis by thermogravimetry” (heating rate 20 degree/min, temperature range room temperature ~ 850 degree).

In terms of differential scanning calorimetry (DSC), it must comply with the following standards:

• “ISO 11357 Plastics - Differential scanning calorimetry (DSC)”.
• “ASTM D3418-21 Standard test method for transition temperatures and enthalpies of fusion and crystallization of polymers by differential scanning calorimetry” (heating and cooling rate 20 degrees/min).

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 testing services within the scope of the "Hyundai Kia MS213-90 Under-cover quality made of polypropylene (PP) resin obtained through the recycling process" standard.