Polymer laboratory
The characteristics and durability of products made of polymeric materials mainly depend on the composition of the selected materials and the quality of processing. Through test procedures, we can obtain data that is the basis for the correct choice of polymers for new products, to ensure uniform quality of materials in the state of delivery and to assess the quality of products. They also allow reliable identification of unknown samples and analysis of damaged products.
Activities of polymer laboratory
Services:
- We determine the characteristics of polymeric materials in their delivery state and after aging (UV, increased and low temperature and humidity).
- We determine the compliance of the characteristics of materials with the data on the certificates.
- We evaluate the quality of products.
- We determine the composition or identification of competing samples.
- Own preparation of test subjects.
Testing is carried out on the following materials:
- thermoplastics, thermosets and elastomers,
- grouting and impregnating resins,
- adhesives, self-adhesive tapes and labels,
- technical laminates and printed circuit boards,
- composites.
The composition and characteristics of polymeric materials are determined:
- in their delivery condition,
- on standard test pieces,
- on test subjects for determination of flammability according to UL 94 and on test subjects for determination of burning rate according to SIST ISO 3795: 1999, FMVSS 302: 2020, DIN 75200: 1980, GMW 3232: 2021, DBL 5307: 2019 point 6.1., MS300-08: 2014 , VCS 5031,19: 2018, D45 1333: 2020, TL 1010: 2008; GS 97038: 2013, VW 96243 / PTL 8501: 2020.
- on products.
Review of test procedures polymers
Chemical, physical and processing characteristics
- identification of polymers, fillers (IR spectroscopy),
- glass transition temperature, melting point, crystallization (DSC thermal analysis),
- viscosity number – polyamides, polycarbonates,
- mass and volume flow: MFR, MVR (flow index),
- thermal resistance according to Vicat,
- wear resistance,
- density and bulk density,
- inorganic filler content, heat resistance (TGA thermal analysis),
- light fastness (UV aging).
Mechanical characteristics
- tensile strength, elongation, E-module,
- flexural strength, E – module,
- impact toughness (Charpy, Izod) without notch and with notch,
- Dynstat – flexural strength and flexural – impact toughness on products (test pieces cut from the product),
- Shore A and D hardness.
Burning speed
- burning rate according to SIST ISO 3795: 1999, FMVSS 302: 2020, DIN 75200: 1980, GMW 3232: 2021, DBL 5307: 2019 item 6.1., MS300-08: 2014, VCS 5031,19: 2018, D45 1333: 2020, TL 1010: 2008; GS 97038: 2013; VW 96243 / PTL 8501: 2020,
- degree of self-extinguishing according to UL 94 or TL 1011 by production of test pieces,
- resistance to glow wire test (Glow wire test).
Electrical characteristics
- surface and volume resistance
Overview of test procedures of rubber, adhesives, foils, wires, cables, laminates
Chemical and physical tests:
- identification of varnish on rubber, resins, adhesives, wires, laminates (IR spectroscopy),
- Brookfield viscosity,
- density,
- determination of dry matter.
Mechanical tests:
- tensile strength of rubber,
- Shore hardness A, D,
- residue after deformation – tires,
- dimensions, elongation, springness of the lacquered wire,
- tensile strength and elongation of foils, insulating pipes, conductors, rubbers,
- tensile – shear strength of adhesives,
- tensile strength, elongation, adhesion of adhesive tapes; adhesion of labels
- adhesion and tear strength of copper foil on laminates, flexural strength of laminates,
- adhesion and elasticity of wire insulation.
Polymer laboratory
natezna-trdnost
polimeri-izdelki
polimeri-vzorci