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Impregnating compound for low-dielectric glass fiber direct yarn and preparation method of impregnating compound

A technology of glass fiber and sizing agent, which is applied in the field of sizing agent for low-dielectric glass fiber direct yarn and its preparation, which can solve the problems of poor resin interfacial bonding, poor yarn bundling, and more hairiness, etc., to increase softness and strengthen Excellent interfacial adhesion and softness

Pending Publication Date: 2021-05-25
LINZHOU GUANGYUAN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the yarn produced by sizing agent for low-dielectric glass fiber direct yarn has poor bundling property, slightly harder, more hairiness, and poor interfacial bonding with resin, which cannot meet the market demand.

Method used

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  • Impregnating compound for low-dielectric glass fiber direct yarn and preparation method of impregnating compound
  • Impregnating compound for low-dielectric glass fiber direct yarn and preparation method of impregnating compound

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A sizing agent for low-dielectric glass fiber direct yarn, including the following components in mass percentage: film forming agent 10%, lubricant A 0.3%, silicone lubricant 0.8%, silane coupling agent OFS-603 20.6%, ice 0.05% acetic acid, and the rest is deionized water. The film-forming agent is composed of a low molecular weight bisphenol A epoxy resin emulsion with an average molecular weight of 420 and a medium molecular weight bisphenol A epoxy resin emulsion with an average molecular weight of 1200, wherein the low molecular weight bisphenol A epoxy resin The mass ratio of the emulsion to the medium molecular weight bisphenol A type epoxy resin emulsion is 1:1. Lubricant A is obtained by compounding imidazoline cationic lubricant and polyoxyethylene ether at a mass ratio of 1:2.1.

[0032]A preparation method of a sizing agent for low-dielectric glass fiber direct yarn, comprising the following steps:

[0033] (1) Use glacial acetic acid to adjust the pH value...

Embodiment 2

[0037] A sizing agent for low-dielectric glass fiber direct yarn, comprising the following components in mass percentage: 6% film-forming agent, 0.25% imidazoline cationic lubricant, 0.6% silicone lubricant, 0.6% silane coupling agent, 0.04% citric acid, and the rest is deionized water. Among them, the film-forming agent is composed of a low molecular weight bisphenol A epoxy resin emulsion with an average molecular weight of 430 and a medium molecular weight bisphenol A epoxy resin emulsion with an average molecular weight of 1400, wherein the low molecular weight bisphenol A ring The mass ratio of the epoxy resin emulsion to the medium molecular weight bisphenol A type epoxy resin emulsion is 1.8:1; the silane coupling agent is made by mixing the silane coupling agent KH570 and the silane coupling agent OFS-6032 in a mass ratio of 1:1 to make.

[0038] A preparation method of a sizing agent for low-dielectric glass fiber direct yarn, comprising the following steps:

[0039...

Embodiment 3

[0043] A sizing agent for low-dielectric glass fiber direct yarn, including the following components in mass percentage: 6% of film-forming agent, 0.25% of polyoxyethylene ether, 0.6% of silicone lubricant, 0.6% of silane coupling agent KH570, Oxalic acid 0.06%, the rest is deionized water.

[0044] The film-forming agent is composed of a low molecular weight bisphenol A epoxy resin emulsion with an average molecular weight of 410 and a medium molecular weight bisphenol A epoxy resin emulsion with an average molecular weight of 1100, wherein the low molecular weight bisphenol A epoxy resin The mass ratio of the emulsion to the medium molecular weight bisphenol A type epoxy resin emulsion is 1.5:1.

[0045] A preparation method of a sizing agent for low-dielectric glass fiber direct yarn, comprising the following steps:

[0046] (1) Use oxalic acid to adjust the pH value of the deionized water to 3.5, add the coupling agent and stir, the stirring speed is 70rmp, the stirring t...

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Abstract

The invention relates to the technical field of glass fiber impregnating compounds, in particular to an impregnating compound for low-dielectric glass fiber direct yarn and a preparation method of the impregnating compound. Theimpregnating compound comprises the following components: a film-forming agent, a lubricant, a coupling agent, a pH regulator and deionized water.The film-forming agent is composed of low molecular weight bisphenol A type epoxy resin emulsion and medium molecular weight bisphenol A type epoxy resin emulsion, the molecular weight range of bisphenol A type epoxy resin in the low molecular weight bisphenol A type epoxy resin emulsion is 300-450, and the molecular weight range of bisphenol A type epoxy resin in the medium molecular weight bisphenol A type epoxy resin emulsion is 1000-1400. The hairiness of the low-dielectric glass fiber direct yarn can be reduced, the yarn quality is improved, sanding is not easy to generate in the weaving process, the yarn quality is improved, the yarn bundling property is improved, the yarn flexibility is increased, the tensile strength and the bending strength of the yarn are improved, and the interface bonding force with resin is enhanced.

Description

technical field [0001] The invention relates to the technical field of glass fiber sizing, in particular to a sizing for low-dielectric glass fiber direct yarn and a preparation method thereof. Background technique [0002] In the drawing process of glass fiber, sizing plays an important role. It can bundle hundreds of glass fiber monofilaments into strands of strands, and prevent the strands from sticking to each other after they are wound into strands. It can also keep the strands soft during the weaving process, reduce mechanical wear, and Endow glass fiber products with various processing properties and application characteristics. With the development of glass fiber to this day, there are such a variety of varieties and such a broad application field, to some extent, it depends on the key role of the continuous improvement of the quality of the sizing agent and the continuous increase of varieties. [0003] Since the birth of my country's glass fiber industry in the l...

Claims

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Application Information

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IPC IPC(8): C03C25/465C03C25/36
CPCC03C25/465C03C25/36
Inventor 焦晓芳宁祥春张海洋
Owner LINZHOU GUANGYUAN NEW MATERIAL TECH
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