ClickPlastics AG and their Asian partners, who are up to 100% backwards integrated, have developed new PBT and PPS products (unreinforced and reinforced, depending on customer requirements) in their portfolio that fulfill the requirements of the LV 215 standard.
The LV 215 standard contains values, that are minimum requirements for products to be used for high-voltage connectors. The current charging power for the batteries should be ≥ 400V, some end customers want to increase charging power up to 1500V.
Mainly the requirements of LV 215 for CTI (Comparative Tracking Index) ≥ 600V -1000V after heat storage for 1008 hours at 150°C can hardly be meet by the materials used up to now. For the requirement of 3000 hours at 85°C and constant color performance, most common products also fail.
The properties mentioned above and additional flame retardancy VO at 0.4mm or 0.8mm thickness, hydrolysis resistant under the test conditions 85%/85°C – where the mech. properties aren’t allowed to fall below 50% after this test – can’t be achieved with current materials.
In addition, a corrosion test of the metal contacts, which are boiled in 100°C hot water, is required, in which the residues are then analyzed. The resistance to battery acid must also be given.
Most current materials fail due to the above mentioned array of requirements. PBT and PPS grades developed by ClickPlastics and their Asian suppliers, that have been specially developed for this application, offer all the desired properties.
The German engineering plastics distributor ClickPlastics AG is representing the complete Bioplastics – productline of their Chinese partner Hengli Group since January 2022.
The product portfolio consists of biodegradable PBAT-Resins (Polybutylenadipat-terephthalat), biodegradable PBS-Resins (Polybutylensuccinat) and PBAT-Biocompounds for mulch /packaging films.
PBAT has similiar properties like Polyethylene with low density. Films produced from PBAT show a high elasticity with high termal resistance up to 230 °C. The blow molding process alIows thicknesses up to 100 µm with good printing and welding properties. The special chemical structure allows a degradable process through microorganisms und enzymes. PBAT-compounds even contain 30 % of biobased materials. The product portfolio is in the final process of certification according the relevant standards EN 13432, DIN CERTO and OK Compost/ TÜV Austria. Sample quantities are available short notice from the German warehouse.
ClickPlastics will introduce PLA-Resins (Poly Lactic Acid) from their Asian partners during the K Show as well. PLA is based on lactic acid, a natural acid, and is mainly produced by fermentation of sugar or starch with the help of microorganisms. PLA is one of the very rare plastics, which is bio-based and as well biodegradable.
Polybutylene adipate terephthalate (PBAT) is a biodegradable and compostable copolymer from the group of polyesters.
PBAT can be used pure and as a compound with polylactic acid (PLA), polyhydroxyalkanoates (PHA), starch, lignin and cellulose.
Thanks to its special chemical structure, PBAT can be broken down by microorganisms and their enzymes. Under the conditions of an industrial composting plant – corresponding temperature, high humidity, defined oxygen content – the degradation takes place within a few weeks.
PBAT can be used as a substitute for polyethylene (PE) and is particularly similar to LD-PE in its properties. It is mainly used to produce films for packaging and agriculture (e.g. mulch films).
Polyoxymethylenes, also known as polyacetals, are high molecular weight thermoplastics. The colorless, partially crystalline polymers are mainly used for the production of molded parts by injection molding. Because of their high rigidity, low coefficients of friction and good dimensional stability, polyoxymethylenes are used for the manufacture of precision parts. A characteristic structural element is an unbranched acetal group.
The homopolymer made from formaldehyde + methanol is called POM-H. In addition to numerous acetal groups, the copolymers (abbreviation POM-C) also have – (CH2) m – O– units with 2 or 4 methylene groups. They serve to thermally stabilize the polymer. POM-C has similar properties to POM-H.
POM is characterized by high strength, hardness and stiffness in a wide temperature range. It retains its high toughness, has high abrasion resistance, a low coefficient of friction, high heat resistance, good sliding properties, good electrical and dielectric properties and low water absorption. The intrinsic color is opaque white because of the high crystallinity, but the material can be dyed in all colors.
Most POM grades meet FDA and EU regulations, and WRAS, KTW and NSF.
The crystallinity of POM-H reaches 80% and is slightly higher than that of POM-C with up to 75%. The crystallite melting point of POM-H is 175 ° C and of POM-C is 164 to 172 ° C. Because of the higher crystallite melting point, POM-H has a slightly better heat resistance. POM-C is somewhat more resistant to alkalis and hot water. In general, POM has poor weather resistance.  If the processing temperature is too high or if it is heated above 220 ° C, POM begins to thermally decompose. It forms for example Formaldehyde, which has a pungent and irritating odor.
Without special surface treatment, POM can only be bonded to a limited extent. The adhesion of adhesives (mostly epoxy resins) can be improved by special pickling of the surface
Areas of application:
POM is therefore one of the preferred construction materials, e.g. for precision parts in precision engineering. The most important areas of application are the automotive industry and electrical engineering, followed by general device and mechanical engineering as well as applications in the consumer goods sector. Gear wheels for example are made out of extruded plates or rods from POM.
Polycarbonate is characterized by high heat resistance, strength
and hardness as well as excellent sliding properties, high abrasion resistance, good chemical resistance, low susceptibility to stress cracking and low moisture absorption.
In addition to the injection molding variants, there are types for the extrusion of semi-finished products, foils and cable sheathing as well as unreinforced, glass fiber reinforced, glass bead and mineral-filled settings.
There are also flame-retardant, elastomer-modified product types approved for food contact as well as blends with acrylonitrile-styrene-acrylic ester copolymer (ASA)
Areas of application:
Polycarbonate is used for optical parts (lenses and glasses) as well as for sports goggles and visors. Here the impact resistance is in the foreground, as well as the weight savings compared to the traditionally used glass, and PCs are also used in the automotive, leisure, household and electrical industries.
In the heart of Europe, partner of the world. In order to provide our customers with the best possible support, we look after some countries directly and we have an extensive network of partners to support those customers that we cannot directly assist.
In order to quickly and independently process customer requests for quality control, we have our own lab located directly at our offices. The most common parameters for plastics can be measured and checked in a timely manner. The required test specimens are manufactured with our own injection molding machine.
The following test devices are available:
Universal test machine 10 kN / tensile test according to ISO 527
Bending test according to ISO 14125 or ISO 178
Pendulum impact hi T5.5P with freezer up to -40°C and notch machine
MeltFlow – MFI/MVR test device with automatic cutting device
Laboratory scales with density determination kit
Microscope for reflected and transmitted light, color measurement acc. to Delta L,a,b
Electronic moisture analyzer
Muffle oven for determining the glass fiber content
Technical competence, in-depth advice, and tailor-made products for your applications in compliance with the “Total Costs of Ownership.” If the right product is not available, we develop it in close cooperation with you and our partners.
Tailor-made logistical solutions to ensure high availability with low capital commitment for you.
High purchasing volumes (styrenes approx. 15,000 t. p.a., polyester approx. 7,500 t. p.a., container import approx. 1,700 TEU p.a.), in combination with our low overhead, allows us to offer you extremely competitive prices.
On request, incoming goods inspection (e.g. for consignment warehouses) and checking pre-defined technical parameters.
The global presence through our partners guarantees you the same workflow and product quality for your worldwide plants.