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Low dielectric constant glass fiber and preparation method thereof

A low dielectric constant, glass fiber technology

Pending Publication Date: 2020-11-17
四川华原玻璃纤维有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a glass fiber with a low dielectric constant, which can solve the problem that the glass fiber in the prior art has a high dielectric constant and will produce toxic and harmful gases during production and use.

Method used

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preparation example Construction

[0034] The invention provides a method for preparing glass fiber with low dielectric constant. The raw materials include the following components in parts by weight: 52-60 parts of quartz sand, 20-25 parts of aluminum hydroxide, 2-4 parts of lime, 2 parts of magnesium hydroxide ~5 parts, zirconium powder 1~3 parts, borax 32~36 parts.

[0035]The preparation method comprises the following steps: (1) weighing: weighing quartz sand, aluminum hydroxide, lime, magnesium hydroxide, zirconium powder, and borax according to the proportion by weight; (2) mixing: mixing the weighed The components are added to the mixer and mixed; (3) Melting: the uniformly mixed raw materials are transported to the kiln head bin, and then sent to the pool kiln for melting. The melting temperature is 1100-1700 ° C and the time is 25 -30min to obtain molten glass; (4) molding: the melted glass passes through the channel to make glass balls; (5) wire drawing: the glass balls are sent to the platinum crucib...

Embodiment 1

[0039] Weigh 53kg of quartz sand, 22kg of aluminum hydroxide, 2.5kg of lime, 2.2kg of magnesium hydroxide, 1.5kg of zirconium powder and 32kg of borax, mix them evenly in the mixer, and transport them to the kiln head warehouse, and then send them into the pool kiln for melting The melting temperature is 1200°C, and the melting time is 25 minutes. The molten glass is passed through the passage to make glass balls, and then drawn through a platinum crucible furnace to obtain a finished low dielectric constant glass fiber. The glass in the platinum crucible furnace The volume of the ball is 1 / 2 of that of the platinum crucible furnace, and the drawing temperature is 1200°C.

[0040] The obtained low dielectric constant glass fiber contains the following components: SiO 2 52.5%, CaO 2.3%, MgO3.3%, Al 2 o 3 13.2%, B 2 o 3 21.5%, ZrO 2 1.2%, Fe 2 o 3 0.05%, K 2 O 0.05% and other unavoidable impurities.

Embodiment 2

[0042] Weigh 54.5kg of quartz sand, 23kg of aluminum hydroxide, 2kg of lime, 3.2kg of magnesium hydroxide, 1.7kg of zirconium powder and 33.5kg of borax, mix them evenly in the mixer and transport them to the kiln head warehouse, and then send them into the pool kiln for further processing. Melting, the melting temperature is 1500°C, and the melting time is 28 minutes. The molten glass is passed through the passage and made into glass balls, and then drawn through a platinum crucible furnace to obtain a finished low dielectric constant glass fiber. Among them, the platinum crucible furnace The volume of the glass ball is 1 / 3 of the platinum crucible furnace, and the drawing temperature is 1200°C.

[0043] The obtained low dielectric constant glass fiber contains the following components: SiO 2 53.4%, CaO 2.8%, MgO 4.3%, Al 2 o 3 12.2%, B 2 o 3 23%, ZrO 2 1.3%, Fe 2 o 3 0.05%, Na 2 O 0.06% and other unavoidable impurities.

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Abstract

The invention discloses a low dielectric constant glass fiber and a preparation method thereof, wherein the low dielectric constant glass fiber comprises the following components: 52-60 wt% of SiO2, 2-5 wt% of CaO, 3-6 wt% of MgO, 12-17 wt% of Al2O3, 20-25 wt% of B2O3, 0.05-0.1 wt% of Fe2O3, 1-3 wt% of ZrO2 and less than 0.1 wt% of R2O being Na2O or K2O. The preparation method of the low-dielectric-constant glass fiber comprises the following steps: (1) weighing; (2) mixing; (3) melting; (4) forming; and (5) wire drawing. The prepared low-dielectric-constant glass fiber has the dielectric constant of 3.65-3.87 F / m and the monofilament strength of 3300-3310 MPa, does not contain components harmful to the environment, and can be used for high-frequency and high-speed emission.

Description

technical field [0001] The invention relates to the technical field of glass fibers, in particular to a low dielectric constant glass fiber and a preparation method thereof. Background technique [0002] Low-dielectric glass fiber is an inorganic non-metallic material with excellent performance. It is mainly used in national defense wave-transmitting composite materials. With the rise of the electronic information industry, low-dielectric glass fiber is also used in the manufacture of electronic fiber cloth, Dielectric material for copper clad laminates and printed circuit boards. The smaller the dielectric constant of the glass fiber, the faster the propagation speed of the signal, so in order to be suitable for the electronic information industry, it must have a low dielectric constant. [0003] There is a document disclosing a low dielectric constant glass fiber, the composition of which is: 49-54wt% SiO 2 , 13~15wt% Al 2 o 3 , 22 ~ 27wt% B 2 o 3 and 5-15wt% MgO, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/02C03C6/04C03B37/022
CPCC03C13/00C03C1/00C03B37/022
Inventor 刘彬朱铭
Owner 四川华原玻璃纤维有限责任公司
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