Two-component hybrid matrix system made up of polyurethanes and polymethacrylates for preparation of short fibre reinforced semi-finished products

An acrylate, two-component technology, applied in the field of sheet molding composite materials and molded products, can solve the problems of high melt viscosity, high compression pressure, insufficient quality and mechanical properties of composite materials, etc., and achieve high flexibility The effect of high performance and impact resistance, large degree of freedom, and high mechanical stability

Inactive Publication Date: 2019-11-05
EVONIK DEGUSSA GMBH
View PDF17 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system has been found to be disadvantageous in that the melt viscosity required for further processing of the prepreg at the required crosslinking temperature is often very high
It is therefore necessary to set a very high pressing pressure; otherwise the quality and mechanical properties of the composite are not good enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-component hybrid matrix system made up of polyurethanes and polymethacrylates for preparation of short fibre reinforced semi-finished products
  • Two-component hybrid matrix system made up of polyurethanes and polymethacrylates for preparation of short fibre reinforced semi-finished products
  • Two-component hybrid matrix system made up of polyurethanes and polymethacrylates for preparation of short fibre reinforced semi-finished products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0116] The procedure begins by providing components A and B. For this, the starting materials are homogenized for 1 hour at room temperature with the aid of a high-speed stirrer. The table below provides some details of the composition of the two components. The viscosity of component A is equal to 2.5 Pas and the viscosity of component B is 1 Pas as measured by the cone and plate method. Table 1 shows the composition of Part A. Table 2 shows the composition of Part B.

[0117] Table 1: Component A

[0118]

[0119] Table 2: Component B

[0120] supplier Feed weight Based on the ratio of component B Ethylene glycol Sigma Aldrich 0.1 mole; 6.2g 28.7％ Lupranol 3504 BASF 0.076 mol; 14.9g 68.9％ cumene hydroperoxide United Initiators 0.5g 2.31％ DBTL Sigma Aldrich 0.027g 0.125％ Total 100％

[0121] The resulting low-viscosity component was then applied on a fiber-reinforced Teflon film at a mixing ratio of 2:...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
Login to view more

Abstract

A novel 2-component system and a process using the system produce semifinished component products that are stable in storage, in particular sheet moulding compounds (SMC) and mouldings produced therefrom (composite components). The process has five stages, including three different reactive steps which lead to successively increasing hardness levels. The 2-component system is applied to fibre material, e.g. carbon fibres, glass fibres or polymer fibres, or the 2-component system is brought into contact with short fibres, whereupon a first reaction takes place. This is followed by thermal polymerization initiated by redox initiation or with the aid of radiation or of plasma applications. Polymerization produces thermoplastics or, respectively, thermoplastic prepregs, which can then subsequently be moulded. Polyols present can finally be crosslinked, via elevated temperature, with uretdiones already present in the system. It is thus possible to produce dimensionally stable thermosets orcrosslinked composite components.

Description

technical field [0001] The present invention relates to a novel two-component system and its use for the production of storage-stable semi-finished component products, in particular sheet molding composites (SMC), and molded articles (composite components) produced therefrom ) (composite component) method. The method described in the present invention has five stages comprising three distinct reaction steps leading to successively increasing levels of hardness. Methods are known here for applying the two-component system to fiber materials, such as carbon fibers, glass fibers or polymer fibers, or for bringing the two-component system into contact with short fibers, whereby the first reaction takes place. Thermal polymerization is then initiated by redox initiation or by means of radiation or plasma application. Background technique [0002] Polymerization produces thermoplastics or respective thermoplastic prepregs, which can then be molded. The polyol present can eventu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L33/08C08G18/75C08G18/32C08F220/18C08J5/24
CPCC08L75/04C08G18/755C08G18/3206C08F220/18C08J2375/04C08J2433/08C08J5/249C08L33/08C08G18/2027C08G18/485C08G18/798C08J2375/14B29C70/50C08G18/42C08F283/008C08J5/04B29C67/246B29K2033/08B29K2075/00B29K2105/0002
Inventor Z·通贾伊H·勒施C·克龙E·高兰L-M·埃尔默
Owner EVONIK DEGUSSA GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap