ROTFELD Consulting GmbH & Co. KG – NEWS

11.2024 Vintage Vespa Carburetor Made from DIPRO®blend H/GF, Filament Printing

Patented DIPRO^®mat High-Performance Polyolefin

15 % special glass fiber reinforcement + modification for extreme dimensional stability

09.2024 3D Housing for Filament Printers made of DIPRO®mid C Precision Polyamide

In order to avoid having to remove the filament spools on the printer cover during operation and when access to the printer nozzle is necessary, a spacer housing was designed, which is printed from Product ID 1610, DIPRO^®mid T25.8CH2GF5*9200F, a DIPRO^®mid Precision Polyamide, CoPA with 25 % special glass fiber reinforcement.

Source: https://www.thingiverse.com/thing:6188278
Designer: blecheimer
License: CC BY-NC-SA 4.0 
Print + image rights: DIPROmat

Special features:

• The housing material contains 25 % special glass fiber reinforcement which, in combination with the partially aromatic co-polyamide formulation, ensures extreme dimensional stability with an excellent surface.
• The influence of moisture on the properties of these DIPRO^®mid compounds is very low. Warpage is barely measurable. The building board adhesion is also very good.
• The housing was printed in various elements and assembled and bonded with form-fit connecting elements.
  Due to the polarity of the housing material, bonding and, if necessary, painting are easily possible, even without pre-treatment.

07.2024 DIPRO^®flex in all colors for robust applications

Source: DIPROmat

Robust cell phone protective cover made out of product ID 2091, DIPRO^®flex S52DH4MD/1327*600/3001F

• TPS without plasticizer with 52 ShD
• low molding shrinkage
• maximum strength
• low density
• extreme tear resistance

The density of 0.92 g/cm³ is approx. 30 % lower than the density of TPU.

The cell phone protective cover is manufactured using FFF/FDM filament printing.

The practically invisible layers and the pleasant feel are impressive.

This type can be produced with improved flowability for injection molding.

06.2024 Flexball made of DIPRO^®flex S, Filament Printing

Softness is a combination of Shore hardness and geometry.

As the hardness of the filaments has a limit, it makes sense to make the application soft by using the appropriate geometry.

The Flexball is printed from filament with Product ID 1634, PX-DIPRO^®flex S90.1H2/1300*700F with 90 Shore A.

Due to its geometry, the ball is highly flexible despite its relatively high hardness.

Special features:

• super layer adhesion
• temperature limit 120 °C
• all colors are possible
• no pre-drying of the filaments
• good hydrolysis resistance
• hard/soft bonds are possible with DIPRO^®blend H
• good recyclability with all polyolefins
• low density

Forget the problem of “wet filaments”, as is the case with TPU.

DIPRO^®flex H with higher strength and good abrasion resistance are available.

Source: GRAUTS

06.2024 Stiff Ball Lattice Structure and Turbine Wheel with DIPRO^®blend H, GF 25 %

All examples show the very good molding of delicate structures and complex geometries.

All applications are made of Product ID 2008, PX-DIPRO^®blend H3GF5H4Z24*800F, a HIGH-PERFORMANCE-POLYOLEFIN with 25 % special glass fiber reinforcement.

Special features:

• very low shrinkage
• high heat resistance
• high rigidity
• low warpage
• good building plate adhesion
• UV stabilization even for light colors
• high strength across the fiber
• high impact strength, even notched and at low temperatures (CHARPY k > 25 kJ/m²)
• all colors are possible
• suitable for hard/soft combinations in filament pellet printing

Shaping is almost unlimited in filament (FFF/FDM) and pellet printing (FGM/FGF).

Ultra-tough grades are available (CHARPY k >30 kJ/m²).

Source: GRAUTS

06.2024 Hopper for 3D Pellet Printers – Precision Polyamide with 25 % Special Glass Fiber Reinforcement

To improve the flowability of pellets, especially Thermoplastic Elastomers, we have replaced the original asymmetrical hopper with a symmetrical axial hopper.

05.2024 DIPRO^®flex Thermoplastic Elastomers

04.2024 Radiation-Crosslinkable Polymers for Injection Molding and Extrusion

04.2024 Hard/Soft Connection, FFF/FDM Printing

Source: DIPROmat

Housing with seal

03.2024 Super Surface with DIPRO^®blend H GF 15 % – Filament Printing

Source: DIPROmat

Product ID 1443, DIPRO^®blend H3GF3H1Z44*9200F – housing material for very robust applications

• low molding shrinkage
• little warpage
• ultra-tough despite 15 % glass fiber reinforcement
• heat deflection temperature HDT / B = 134 °C
• processing without pre-drying

11.2023 Hard/Soft Combination, FDM Printing

Hard/soft combinations with co-recyclable products can now also be printed using the FDM/FFF or pellet printing process!

A very valuable feature, especially with filament printing, is that the spools do not have to be pre-dried.

These hard/soft combinations are also easy to produce in larger quantities using injection molding.

Source: GRAUTS

Garden chair or appliance base

• Black: DIPRO^®blend H GF 25 %
• Blue: DIPRO^®flex S90

11.2023 DIPRO^®blend H 20 % Mineral MT

Source: DIPROmat

Product ID 1832, DIPRO^®blend H3MT4H1Z24*800F

• super surface
• isotropic shrinkage
• impact resistant
• can be colored as desired

11.2023 ARBURG-FORMNEXT Presentation / DIPRO^®mid on FREEFORMER

Bicycle tire lever made of DIPRO^®mid H GF 25 % for changing bicycle tires

• low-warpage precision polyamide
• little influence of moisture on part properties
• high strength
• high rigidity
• easily transferable to injection molding

10.2023 DIPRO^®blend H with and without Glass Fiber Reinforcement / Filament Pressure

09.2023 Whether Flower Vase, Car Bumper or Technical Housing  –  EVERYTHING 3D Printed!

1) Vase large
– Product ID 1633, PX-DIPRO®blend H3.1H1Z64*700F, or Product ID 1864, PX-DIPRO®blend H3H2Z14*601EX –

Depending on the stiffness requirement, this demonstrator was made of DIPRO®blend H product ID 1633, PX-DIPRO®blend H3.1H1Z64*700F, or product ID 1864, PX-DIPROblend H3H2Z14*601EX. These two unreinforced and ultra-tough polymers have an Et Modulus of 856 MPa to 1,050 MPa and are virtually indestructible due to ultra-tough impact and notched impact properties.

2) Vase center
– Product ID 1832, PX-DIPRO®blend H3MT4H1Z24*800F –

In order to further increase the stiffness, 20 % mineral type “MT” was used for product ID 1832, PX-DIPRO®blend H3MT4H1Z24*800F. Now a housing material with Et Modulus of 1,520 MPa is available with high impact strength and still good notched impact strength. The surface finish is excellent.

3) Vase on the right
– Product ID 1831, PX-DIPRO®blend H3MTGF42H1Z24*800F –

For some housings, the above-mentioned stiffness is not yet sufficient, which is why Product ID 1831, PX-DIPRO®blend H3MTGF42H1Z24*800F, was developed as a housing grade with 20% mineral type “MT” and 10% special glass fiber for low-cost housing materials. The Et Modulus is now 3,030 MPa.

In addition to this group of polymers, 10 – 25% specialty glass fiber polymers are available up to 4,500 MPa tensile modulus.

09.2023 DIPRO^®flex S90.1H2/1300*700F, Product ID 1634 – Thermoplastic Elastomer for Filament Printing up to 120 °C (HSBC)

08.2023 Market Launch of DIPRO^®blend H3.1H1Z64*700F, Product ID 1633 – an ULTRA-TOUGH HOUSING MATERIAL!

08.2023 DIPRO^®blend H High-Performance Polyolefin 15 % GF (Special Glass Fiber Reinforcement), Ultra-Tough

Source: DIPROmat

Car storage tray for cell phone, cables and more

This material was chosen for automotive interior applications for the following reasons:

• medium stiffness
• extreme high notched impact strength
• heat deflection temperature HDT-B of 134 °C
• good heat aging behavior
• low material density of 1.01 g/cm³
• low part density due INFILL of 0.75 g/cm³
• easy to print
• no pre-drying of the filament spool
• high absorption, no tendency to rattle
• matt black surface

07.2023 Minimal Mold Shrinkage (0.1%/0.1% – MD/PMD), High Strength (153 /147 MPa – Dry/Conditioned), Stiffness (11,100 / 9,700 MPa – Dry/Conditioned) and Heat Deflection Temperature (HDT-B=200 °C) with Simultaneous ESD (Electrostatic Discharge) Properties Enable Forward-Looking Applications in FDM/FFF 3D Printing.

01.2023 DIPRO^®blend H and DIPRO^®flex High-Performance Polyolefins with Minimal Mold Shrinkage for High Precision

Together with ROTFELD-Consulting, DIPRO®mat has been able to develop a range of unreinforced and special glass fiber-reinforced high-performance polyolefins (patent pending) that exhibit hardly any shrinkage, are incredibly tough and – unlike conventional impact-modified PPs – do not lose any heat distortion temperature, since a blend component provides a Tg (glass transition temperature) of 160°C.

This results in polyolefin compounds with high precision available for injection molding and 3D printing. An exciting fact is that the development started in additive manufacturing, where a large warpage is useless, and now returned to injection molding applications.

12.2022 First Processing with Adaptive IR Zone Heating System (FFF/FDM Printing)

The equally smooth surface coupled with high strength in the build-up direction was achieved with Apium’s patented IR zone heating system. In this process, only the uppermost layers are melted so that there is a high level of layer bonding. In the meantime, the lower layers can cool down without any further thermal influence on the surface quality.

11.2022 First Production with DIPRO^®mid Carbon Fiber on High-Speed Pellet Printer

11.2022 Extension of the ROTFELD Network by the Companies Q.BIG 3D GmbH, LuxYours GmbH and Grauts GmbH.

Successful network meeting with 11 diverse companies from the industrial sectors mobility, electrical, 3D machine manufacturers (pellet and filament printing FFF/FDM, VFGM, AKF), chemical smoothing, AF service providers and institutes.

10.2022 Filament / Pellet Printing – Hard/Soft Compound 3D

09.2022 Development of PRECISION Polyamide for Flame Retardant (Injection Molding and 3D Printing) & Halogen-free DIPRO®flex FR, 75 ShA and Above.

09.2022 In the Past Year a Variety of Compounds for Injection Molding and Additive Manufacturing, Including Radiation Crosslinkable Polymers, Were Developed for the Production Company DIPROmat GmbH

Please visit www.dipromat.de (TECH-NEWS) for more information.

08.2022 Flexible Structure Made of DIPRO®flex for Pellet and Filament Printing, Up to 120 °C, Flexible, Super Bonding Strength for Flexible Three-Dimensional Structures

07.2022 Filaments by Network Partners with CARBON and GLAS Fiber Reinforcement with Extremely Low Shrinkage

06.2022 TPE Masterbatch Development for In-House Production of TPS with Low Compression Set for Injection Molders & Printable TPE Special Compounds for FFF/FDM/LAAM/VLAAM and Pellet Printers

05.2022 DIPRO^®mid for High-Capacity Pellet Printers VLAAM

Caravan rear end

Precision polyamides with minimal mold shrinkage for high-capacity printers

• DIPRO^®mid 25 % GF
• Caravan rear end
• Largest molded part printed to date
• Dimension: 210 x 70 x 30 cm
• Co-Founder Q.BIG 3D, Dennis Herrmann

01.2022 Development of Radiation-Crosslinkable DIPRO^®mid PRECISION Polyamides for DIPRO^®mat

08.2021 Product Highlights ETP for Filament and Pellet Printing

Reinforced high-performance PA grades for FFF (filament printers) and FGM (pellet printers)
All FFF-FGM polyamides with glass fiber reinforcement show extremely low mold shrinkage. This is particularly important for large-format printers.

PX-DIPROmid T25.7CH2C3*9200F                     Product-ID: 912             Request data sheet
(semi-aromatic, 15 % carbon fiber, HDT/B=200 °C)

PX-DIPROmid-T25.7CH2GF5*9200F                  Product-ID: 910             Request data sheet
(semi-aromatic, 25 % glass fiber, HDT/B = 200 °C)

PX-DIPROmid HT4.0H6.0GF5*9200F                  Product-ID: 921             Request data sheet
(PPA-25 % glass fiber, low warpage, Tg = 125 °C, HDT/A 215 °C, HDT/B 243 °C)

07.2021 Product Highlights ETP Injection Molding

High stiffness low warpage polyamides (40-60 % glass fiber reinforcement) with aesthetic surface, low warpage
PX-DIPROmid A1H6.1G12T3U*9200                   Product-ID: 807             Request data sheet
PA66 + X, 60 % glass fiber, ultra-flow, 3rd generation partially aromatic PA, extremely good surface, low warpage.
The influence of moisture absorption on the properties is low. This is a typical metal substitute material with aesthetic surface.

PX-DIPROmid C3H6.1GF12T1U*9200                 Produkt-ID: 793             Request data sheet
PA-Copo + X, 62 % glass fiber, partially aromatic, a possible answer to constantly recurring PA66 shortages.
The high modulus aesthetic material exhibits unprecedented low mold shrinkage values (0 % md/0.1 % pmd) and is suitable for dimensionally stable metal replacement applications. The tensile strength of 265 MPa is high, and the processing window is relatively wide.
Mechanical values perpendicular to the fiber are 28-30 % better compared to competitor materials.
High performance polyamides of the same family with 40 % and 50 % glass fiber reinforcement are available.

50 % glass fiber reinforcement, aesthetic surface, low warpage
PX-DIPROmid A2H6.1G10T2U*9200                   Product-ID: 734             Request data sheet

PA66 + X, 50 % glass fiber reinforcement, partially aromatic, low warpage, easy-flow, aesthetic surface
The influence of water absorption on the properties is low. This is a typical metal substitute material for the automotive industry and mechanical engineering.

PX-DIPROmid A2H6.1G10T3U*9200                  Product-ID: 803             Request data sheet
PA66 + X, 50 % glass fiber reinforcement, partially aromatic, very low warpage, easy-flow, aesthetic surface
Compared to Product ID: 734, this high-performance material offers a wider processing window and less warpage.

DIPROmid T50.4H2C3*9200 and DIPROmid TR50.4H2*6000

Crosslink tester with switching bridge

07.2021 ROTFELD-Consulting Developed a Wide Range of Highly Reinforced, Aesthetic Polyamides for Its Sister Company DIPROmat GmbH, Most of Which Are Produced with Unprecedented Low Warpage and Without the Currently Very Scarce Polyamide 66 Precursors.

Metal replacement applications with the highest precision are possible.

Two product lines for additive manufacturing (pellet and filament printer) and injection molding applications are available from DIPRO^®mat on request. The first DIPRO^®mid HT4 PPA filament materials with high Tg, low warpage and minimal water absorption at moderate processing temperature and 25 % glass fiber reinforcement are available on request for FFF/FGM printers.

www.dipromat.de

DIPRO^®mat – Materials for Digital Production

The company DIPRO^®mat – Materials for Digital Production emerged from the ROTFELD Consulting Network in the first half of 2020 (see network participants list).

Change in the ” Inner ROTFELD-Network ” :

In the founding year 2017/2018, the SKZ “Das Kunststoffzentrum” Würzburg was a member. Since November 2018, NMB “Neue Materialien Bayreuth” has taken its place. Especially the activities in the field AF “Additive Manufacturing” largely coincide with the network activities. The focus is on materials for 3D printing processes with thermoplastics in powder and filament form.

Partner for ” Tribological Applications ” wanted.

The “Querdenker Netzwerk” of Rotfeld-Consulting is looking for a medium-sized company to optimize gear wheels, bearings and other parts subject to friction and abrasion through the pioneering technology of irradiation cross-linking. Promising results are already available.

Background:

In electrical engineering, the successful path of radiation crosslinked components made of polyamides began in order to survive melting during temperature peaks. This is state of the art and in series production at most suppliers of switchgear and relays. The fact is, after some time it became apparent that the mechanical life was drastically extended. This developed into the first, and later scientifically proven, principles of significant abrasion reduction by crosslinking the amorphous components of semi-crystalline thermoplastics.