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Polyketone moulding compounds with improved properties, moulded articles produced therefrom and also method for the production thereof

A molding compound, polyketone technology, applied in the field of polyketone molding compound, can solve the problems of high melting, thermal and mechanical properties damage, no protection against volatile compounds, etc.

Pending Publication Date: 2017-06-30
EMS PATENT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, although aliphatic polyketones represent thermoplastics with very good properties, they have the disadvantage that they have relatively high melting points close to the temperature at which they undergo chemical decomposition, in particular intermolecular and the temperature of the intramolecular aldol condensation reaction
However, the use of other polymers has the disadvantage that relatively large amounts of other polymers are required, so that especially the thermal and mechanical properties are completely impaired
[0008] According to JP11-181080, additives such as alumina or magnesia do in fact improve the flow behavior during processing, but do not prevent the generation of volatile compounds due to the decomposition of polyketones

Method used

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  • Polyketone moulding compounds with improved properties, moulded articles produced therefrom and also method for the production thereof
  • Polyketone moulding compounds with improved properties, moulded articles produced therefrom and also method for the production thereof
  • Polyketone moulding compounds with improved properties, moulded articles produced therefrom and also method for the production thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0125] Preparation of polyketone molding compound

[0126] The raw materials of components (A), (C) and (D) were premixed and metered by weight into the feed of a twin-screw extruder of type ZSK25 (Werner and Pfleiderer). Component (B) was metered into the melt via a side feeder 4 housing unit ahead of the discharge. The process is carried out at a barrel temperature of 200° C. to 270° C. with a screw speed of 200 rpm and a throughput of 10 kg / h. The material is discharged through nozzles and pelletized after cooling the stream. Drying was then carried out in vacuo at 100° C. for 24 hours.

[0127] Manufacture of molded articles

[0128] The manufacture of the molded articles was carried out on an injection molding machine Arburg Allrounder 420C-1000-250 with a barrel temperature ramp of 200°C to 270°C and an injection pressure of 1000 bar to 1800 bar. The mold temperature was 80°C. The geometry of the molded articles corresponds to the specifications of the respectiv...

Embodiment E1-E6

[0141]

[0142] % by weight = percent by weight

[0143] Table 2: Comparative Examples CE1-CE7

[0144]

[0145] % by weight = percent by weight

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Abstract

The present invention relates to polyketone moulding compounds based on partially crystalline, aliphatic polyketones. In particular, it relates to fibre-reinforced moulding compounds based on aliphatic polyketones which preferably comprise small quantities of phosphinic acid or the salts thereof. The moulding compounds are distinguished by improved mechanical properties and good processability in injection moulding. These moulding compounds are suitable for the production of in particular thin-walled moulded articles for the electrical and electronics industry, such as for example housings, housing components or connectors.

Description

technical field [0001] The invention relates to polyketone molding compounds based on partially crystalline aliphatic polyketones. In particular, the invention relates to fiber-reinforced molding compounds based on aliphatic polyketones, which preferably contain small amounts of phosphinic acid or salts thereof. The molding compounds are characterized by improved mechanical properties and good processability in injection molding. These molding compounds are suitable for the production of thin-walled molded articles, such as housings, housing components or connectors, in particular for the electrical and electronics industry. Background technique [0002] Aliphatic polyketones have been known for many years and are characterized by essentially constant mechanical properties between 10°C and 100°C, very good resistance to hydrolysis, high thermal dimensional stability, good resistance to wear and Tear properties as well as good fuel barrier properties. [0003] On the other...

Claims

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Application Information

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IPC IPC(8): C08L73/00C08K13/04C08K7/14C08K5/5333C08K5/5313C08J5/04
CPCC08J5/043C08K5/5313C08K5/5333C08K7/14C08K13/04C08J2373/00C08K2201/003C08K2201/004C08L73/00C08K5/13C08G67/00C08G67/02C08K5/524C08K5/5317C08K3/013C08K3/32C08K7/02C08K5/5393
Inventor 乔治·施特佩尔曼
Owner EMS PATENT AG
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