Chopped glass fiber sizing agent for bulk molding compounds (BMC) for reinforcing thermosetting resin

A chopped glass fiber and sizing technology, which is applied in the field of chopped glass fiber sizing for BMC that reinforces thermosetting resins, can solve the problems of high mechanical strength of BMC products, and achieve high strength, good appearance, and good compatibility.

Active Publication Date: 2013-03-20
JUSHI GRP CO
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the fact that the existing sizing agent cannot effectively solve the conflicting problems among chopped glass fiber fluidity, hairiness, product appearance, and product strength, the invention provides a chopped glass fiber sizing agent for BMC that reinforces

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0045] The technical solutions of the present invention are further described below with specific embodiments, but the protection scope of the present invention is not limited to this:

[0046] Refer to Table 1. In these examples, in order to achieve the bundling of chopped glass fiber, improve chopped fiber, improve the fluidity and uniformity of BMC pellets, and improve the requirements of yield, we choose Jushi Chemical Branch to produce self-crosslinking polyurethane Emulsion TX-826 (denoted as Emulsion Binder A) is mixed with high molecular weight epoxy emulsion TX-208 (denoted as Emulsion Binder B) produced by Jushi Chemical Branch as a binder. Emulsion Binder A is a self-crosslinking polyurethane emulsion. The particle size of the emulsion is between 0.3 and 2.5 microns, the acetone solubility is 25-40%, the Tg is between -44 and -10°C, and the solid content is 40%. Emulsion Binder B is a flexible bisphenol A epoxy emulsion with medium and high molecular weight epoxy emuls...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Epoxy equivalentaaaaaaaaaa
Login to view more

Abstract

The invention discloses a chopped glass fiber sizing agent for reinforcing thermosetting resin, which is prepared by the components by weight percent: (1) 0.2-1.5% of coupling agent; (2) 3.0-20.0% of binding agent that is cross-linked polyurethane emulsion or the mixture of the cross-linked polyurethane emulsion and medium and high molecular weight epoxy emulsion, wherein the contents of the cross-linked polyurethane emulsion and the medium and high molecular weight elastic epoxy ester emulsion are based on the respective solid content; (3) 0.0-1.2% of lubricating agent; (4) 0.05-0.8% of antistatic agent; (5) 0.1-2% of pH value conditioning agent; and (6) the balance of deionized water, wherein the total weight of all the components is 100%. The chopped glass fiber sizing agent improves the bundling property of chopped glass fiber, reduces the broken filament, improves the mixing uniformity and the fluidity of the glass fiber and the BMC resin paste, and improves the mechanical strength and the appearance performance of BMC products.

Description

(1) Technical field [0001] A chopped glass fiber sizing for BMC that reinforces thermosetting resins, such as unsaturated polyester resins, epoxy resins, phenolic resins, polyurethanes, etc. (2) Background technology [0002] BMC Bulk molding compound is the abbreviation of Bulk molding compounds, that is, bulk molding compound, which is often called glass fiber reinforced resin bulk molding compound in China. Glass fiber reinforced BMC bulk molding compound has excellent electrical properties, heat resistance, chemical corrosion resistance, and is suitable for various molding processes, which can meet the performance requirements of various products, so it is more and more popular among users . BMC bulk molding compound is made of unsaturated polyester or phenolic resin, glass fiber, filler, pigment, additives and other main and auxiliary materials, which are mixed and processed by special equipment and specific technology. This product has excellent electrical insulation...

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
IPC IPC(8): C03C25/32
Inventor 叶凤林张志坚李焕兴章建忠曹国荣
Owner JUSHI GRP CO
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