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Polyketone compound

A compound, technology of aliphatic polyketone, applied in the direction of mechanical equipment, piston rings, engine components, etc., can solve problems such as cracks at seams

Active Publication Date: 2021-05-25
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] For rod seals made of commercial Tribo-PK compounds, this deformation resulted in fractures at the seams

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1: the preparation of polyketide compound of the present invention

[0061] Tribologically modified polyketide compound of the present invention is in the ZSE 27iMAXX type 27mm twin-screw extruder of Leistritz company (screw diameter: 28.3mm, channel depth: 5.6mm (no gap), D a / D i =1.66, maximum torque: 256Nm, screw speed: 600-1200U / min), the extruder is equipped with the BASIC 401 solid feeder of SCHOLZDosiertechnik GmbH company for feeding aliphatic polyketone, for feeding Solids feeder type BASIC 300 from SCHOLZ Dosiertechnik GmbH for UHMWPE, conveyor belts for strand deposition, water cooling system for cooling the deposited polymer strands, and Maag for crushing the deposited strands Downstream granulator PRIMO 60E from Automatik GmbH.

[0062] The aliphatic polyketones used are from AKRO-PLASTIC GmbH PK-VM natur (4774). PK-VM natur (4774) is a high flow non-reinforced polyketone type. Its melting point measured according to DINEN11357-1 method i...

Embodiment 2

[0066] Example 2: Mechanical and Tribological Tests of the Polyketides in Example 1

[0067] The specimens for the mechanical and tribological tests were produced on an injection molding machine type 320C 600-100 Allrounder from Arburg GmbH & Co. KG. Using Axicon Molds' AIM TM Quick change mold as injection mold. S1A tie bars for mechanical tests and Lewis specimens for tribological tests were prepared.

[0068] Mechanical tests showed the compound had a tensile modulus of elasticity of 1725 ± 10 MPa measured according to DIN EN ISO 527-2 / 1A / 50 and a tensile strength of 58.7 ± 0.2 MPa measured according to DIN EN ISO 527-2 / 1A / 50 , the elongation at break measured according to DIN ENISO527-2 / 1A / 50 was 28.2±7.1%.

[0069] The tribological tests were carried out on the LRI-1a Lewis test rig of Lewis Research Inc. Company. D2 steel / 52100 with chemical composition 100Cr6 was used as mating surface. The test was carried out without lubrication. The velocity is v=0.84m / s, and t...

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Abstract

The invention relates to an aliphatic polyketone compound comprising 85.0 wt. % to 99.5 wt.% aliphatic polyketone and 0.5 wt. % to 15.0 wt.% ultra-high molecular weight polyethylene.

Description

[0001] field of invention [0002] The present invention relates to polyketides based on aliphatic polyketones, in particular polyketides having improved tribological properties. The invention also relates to a process for producing polyketides, the use thereof for producing shaped bodies, in particular seals, and shaped bodies comprising polyketides. Background technique [0003] Aliphatic polyketones are linear polymers prepared from carbon monoxide and α-olefins in which the monomer units are arranged in a strictly alternating pattern in the polymer chain. [0004] [0005] This class of polymers was first mentioned in the writings of Walter Reppe in 1940 and Merlin M. Brubaker, who worked in DuPont in the 1950s, carbon monoxide internally copolymerized to unsaturated substances, such as aliphatic monoolefins and fluorinated vinyl (eg US 2.495 .286). The large-scale synthesis of aliphatic polyketones was developed, optimized and patented in the last three decades of th...

Claims

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Application Information

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IPC IPC(8): C08G67/02C08L73/00
CPCC08L73/00C08G67/02C08L23/12F16J9/26F16J15/3284F16J15/102C08L23/06C08L23/0815C08L2207/068
Inventor B·赫尔巴赫M·萨特R·菲茨T·斯查伯
Owner CARL FREUDENBERG KG
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