Application of assistant agent in electronic-grade glass fiber cloth desizing and desizing process thereof

A glass fiber cloth and electronic grade technology, which is applied in the field of desizing process of electronic grade glass fiber cloth, can solve the problems of increasing desizing temperature, abnormal cloth breakage and high desizing temperature, so as to ensure tensile strength and improve wettability. , the effect of reducing ash

Inactive Publication Date: 2013-02-13
SHANGHAI GRACE FABRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second time is intermittent batch desizing to remove the remaining size. After the second desizing, it is required that the residual organic combustibles content on the cloth surface generally does not exceed 0.1%, which takes a long time, generally more than 40 hours, and the required desizing The slurry temperature is higher, usually 350 to 600°C, so more energy is consumed
There are also problems with the two high-temperature desizing, mainly because the desizing effect is still limited, the color of the cloth surface cannot reach the whitest, and

Method used

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  • Application of assistant agent in electronic-grade glass fiber cloth desizing and desizing process thereof
  • Application of assistant agent in electronic-grade glass fiber cloth desizing and desizing process thereof
  • Application of assistant agent in electronic-grade glass fiber cloth desizing and desizing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example One: Selection of Chemical Auxiliaries

[0031] Three types of chemical additives are selected to be applied to the cloth surface in the form of aqueous solution, and the desizing properties are compared through the same desizing method, and the chromaticity, tensile strength and organic matter content on the cloth surface are compared and analyzed:

[0032] Table 1 Ca 2+ Compound solution formula and data comparison analysis table (each component by mass percentage)

[0033]

[0034] Table 1 uses 1506, 2116, 1080, 106, 101 series desizing cloth (thickness is 0.16-0.025mm) produced by Shanghai Honghe Electronic Materials Co., Ltd., the test results are as follows figure 1 , figure 2 As shown, the data are recorded in Table 1, and the above graph shows that at a concentration of 0.3% CaCO 3 Compound works best as a desizing aid.

[0035]

Embodiment 2

[0036] Embodiment two: proportioning concentration type selection

[0037] Formulated CaCO 3 Different proportions of aqueous solution, the same desized cloth sample is immersed in different proportions of the solution, taken out and dried, put into the intermittent secondary desizing furnace for high-temperature desizing, after taking it out, compare the chromaticity value (L value) and Organic matter content, determine the solution concentration with the highest L value and the lowest organic matter content, and the tensile strength does not fluctuate significantly after repeated tests, and the stability is determined through repeated operations.

[0038] refer to image 3 , Figure 4 The curves shown are consolidated into Table 2 below.

[0039]

[0040]Table 2 still uses 1506, 2116, 1080, 106, 101 series desizing cloth (thickness 0.16-0.025mm) produced by Shanghai Honghe Electronic Materials Co., Ltd., the test results show that CaCO 3 The solution with a concentrat...

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Abstract

The invention discloses an application of an assistant agent in electronic-grade glass fiber cloth desizing, a desizing process thereof and an assistant desizing method which is used during production of electronic-grade glass fiber cloths of insulating reinforcing materials of printed-circuit boards. The technical scheme includes that a calcium compound serves as the assistant desizing agent and is used for desizing operation of electronic-grade glass fiber cloths. In the traditional twice smoldering desizing process for electronic-grade glass fiber cloths, the assistant desizing agent containing the calcium compound is added, so that surface size and ash content of electronic-grade glass fiber cloths are decomposed and gasified easily during smoldering, the desizing effect that the content of combustible substances on cloth surfaces is minimum can be achieved within the same desizing time and at the same desizing temperature, the desizing time can be shortened within a permissible range of combustible substances of electronic-grade glass fiber secondary desizing cloths, and the energy can be saved. By the aid of the application and the desizing process, an interface which is pure, white in chroma and low in organic content is provided for a dipped surface active agent of electronic-grade glass fiber cloths, and the time and the energy consumption of the gap type twice desizing process can be reduced.

Description

technical field [0001] The invention relates to an auxiliary desizing method applied in the manufacturing process of electronic-grade glass fiber cloth, which is an insulation reinforcing material for printed circuit boards, and aims to provide a fast and more effective desizing process for electronic-grade glass fiber cloth. Background technique [0002] Electronic-grade glass fiber cloth used as insulation reinforcement for printed circuit boards is an inorganic material, specifically an alkali-free glass fiber (E-glass) material whose main component is SiO 2 、Al 2 o 3 , CaO ternary system, its main raw materials are silica sand, limestone, boron oxide, etc. Alkali-free glass fiber material has excellent electrical properties, insulation, weather resistance, and chemical corrosion resistance. [0003] After the weaving of the cloth surface, the size on the surface of the raw silk and the size on the warp yarn before weaving in the sizing process have no effect, and will...

Claims

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Application Information

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IPC IPC(8): D06L1/14D06L1/16D06C7/00
Inventor 杜甫严海林于从国
Owner SHANGHAI GRACE FABRIC
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