Plast

Ämnesområden: Plast
Kommittébeteckning: SIS/TK 156/AG 03 (Material)
Källa: ISO
Svarsdatum: den 1 aug 2024
Se merSe mindre
 

This document establishes requirements and specifications of the polyester moulding compounds BMC (bulk moulding compound) and DMC (dough moulding compound) with or without thickening agents. BMC and DMC are different types of preimpregnated product used for the production, by moulding, of various parts made of composite materials.

It is applicable to BMC and DMC. The scope is not limited to types of fibres and resins.

Ämnesområden: Plast: allmänt
Kommittébeteckning: SIS/TK 156/AG 03 (Material)
Källa: ISO
Svarsdatum: den 1 aug 2024
Se merSe mindre
 

This document specifies two methods for the determination of co-monomer contents of polyethylene products by solution state 13C-NMR spectrometry (nuclear magnetic resonance spectrometry):

—   method A: inverse gated decoupling method.

—   method B: insensitive nuclei enhanced by polarization transfer method;

This document is applicable to copolymers of ethylene having a content of other 1-olefinic monomers of less than a mass fraction of 50 %.

This document is not applicable to ethylene homopolymers or copolymers in which ethylene is polymerized with two or more type 1-olefin comonomers.

Kommittébeteckning: SIS/TK 156/AG 01 (Miljöaspekter)
Källa: CEN
Svarsdatum: den 5 aug 2024
Se merSe mindre
 

This document specifies a method for determining the effect of heat on unplasticized poly(vinyl chloride) (PVC-U) profiles, to be carried out in air at 150 °C. It is also applicable to PVC-based profiles at specified temperatures/test conditions.

Kommittébeteckning: SIS/TK 156/AG 01 (Miljöaspekter)
Källa: CEN
Svarsdatum: den 5 aug 2024
Se merSe mindre
 

This document specifies a tensile bending method and a compression bending method for determining the failure stress of welded corners and welded T-joints made from unplasticized poly(vinyl chloride) (PVC-U) profiles. It is applicable to PVC based profiles used for the fabrication of windows and doors.

Kommittébeteckning: SIS/TK 189/AG 01 (Material- och isoleringssystem)
Källa: CEN
Svarsdatum: den 12 aug 2024
Se merSe mindre
 

This document specifies the general “design for recycling” guidelines for EPS raw materials. It provides guidance on the impact of specific design characteristics on the recyclability of the product in practice and recommended design options to ensure that the product is recyclable, including target values and performance ranges, where applicable. It also provides a definition of recyclable product and of design for recycling. This document refers to the recycling processes of EPS products. The sorting and collecting steps are not part of this document. This document takes into account all currently known processes that are suitable to enable the circular economy for insulation materials. Particular attention is paid to ensuring that the most energy-efficient processes are given preference, especially mechanical recycling, unless reuse is already ruled out. For some of these processes, practical experience has been gained over many years, so a basic knowledge base for the development of a guideline is already available. At the same time, it is important to also take into account future-oriented processes, for which at the moment little but increasing experience is available or which have so far only been implemented on a small scale.