E glass fiber with low boron and low softening point, preparation method and application thereof

A low softening point and glass fiber technology, applied in the field of low boron and low softening point E glass fiber, can solve the problems of not being able to meet the performance requirements of yarn used in high-pressure oil pipelines, not being able to meet customers, and increasing raw material costs, etc., to achieve The effect of reducing energy consumption, reducing dependence, and reducing boron content

Active Publication Date: 2013-06-26
NEIJIANG HUAYUAN ELECTRONICS MATERIALS
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Problems solved by technology

[0003] At present, the alkali-free glass fiber used for high-pressure oil pipelines in the market is generally composed of ECR ​​components or traditional E-glass fiber formula. The above-mentioned alkali-free gl

Method used

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  • E glass fiber with low boron and low softening point, preparation method and application thereof
  • E glass fiber with low boron and low softening point, preparation method and application thereof
  • E glass fiber with low boron and low softening point, preparation method and application thereof

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preparation example Construction

[0025] The preparation method method of the low boron low softening point E glass fiber provided by the invention comprises the following steps:

[0026] a. Weighing, the raw materials used and their mass parts are: kaolin: 68-135; pyrophyllite: 285-460; quicklime: 150-200, dolomite: 65-95; Paoolite: 145~235; Fluorite: 13~28; Albite: 17~28, the sum of the ratio of each component is 1000; Albite, fluorite, dolomite, quicklime need to pass 100 mesh, silicon boron calcium Stone needs to pass 200 mesh, and kaolin, pyrophyllite and leucaosite need to pass 200-325 mesh;

[0027] b. Ingredients, start the agitator. After the agitator is running normally, pre-mix the fluorite and albite, and then send the pre-mixed raw materials together with the remaining raw materials in step a to the pneumatic mixing and agitating sender, and stir evenly. Degree greater than 92%;

[0028] c. Melting, send the homogeneously mixed materials in step b into a furnace to melt to obtain high-temperatur...

Embodiment 1

[0034] The amount of raw materials required is: Kaolin: 6.8kg, of which: SiO 2 ≥44.0%, Al 2 o 3 ≥37.5%, Fe 2 o 3 ≤0.6%, H 2 O≤1%; pyrophyllite: 45.0㎏, of which: SiO 2 ≥72%, Al 2 o 3 ≥16.5%, Fe 2 o 3 ≤0.45%, H 2 O≤1%; quicklime: 16.0㎏, of which: CaO≥85%, Fe 2 o 3 ≤0.15%, MgO≤3%, H 2 O≤1%; Dolomite: 7.0㎏, of which CaO≥30%, Fe 2 o 3 ≤0.15%, MgO≤21.0%, H 2 O ≤ 1%; Portlandite: 2.5㎏, its chemical composition is CaBSiO 4 (OH); leucoporite: 20.0㎏, of which SiO 2 ≥80.0%, Al 2 o 3 ≥10.0%, Fe 2 o 3 ≤0.50%, H 2 O≤1%; Fluorite: 2.0㎏, of which: CaF 2 ≥90%, H 2 O≤1%; albite: 1.7㎏, of which: SiO 2 ≥69.0%, Al 2 o 3 ≥17.0%, Fe 2 o 3 ≤0.35%, Na 2 O≥8.5%, H 2 O≤1%; the above percentages are mass percentages.

[0035] Before weighing, the composition content of CaO in quicklime should be detected every day, and the lime ratio should be adjusted according to the content of its composition.

[0036] The production steps are:

[0037]1. Take and weigh various raw mat...

Embodiment 2

[0051] The amount of raw materials required is: Kaolin: 9.2kg, of which: SiO 2 ≥44.0%, Al 2 o 3 ≥37.5%, Fe 2 o 3 ≤0.6%, H 2 O≤1%; pyrophyllite: 36.3㎏, of which: SiO 2 ≥72%, Al 2 o 3 ≥16.5%, Fe 2 o 3 ≤0.45%, H 2 O≤1%; quicklime: 16.5㎏, of which: CaO≥85%, Fe 2 o 3 ≤0.15%, MgO≤3%, H 2 O≤1%; dolomite: 8.3㎏, of which CaO≥30%, Fe 2 o 3 ≤0.15%, MgO≤21.0%, H 2 O ≤ 1%; Portlandite: 3.7㎏, its chemical composition is CaBSiO 4 (OH); leucoporite: 21.5㎏, of which SiO 2 ≥80.0%, Al 2 o 3 ≥10.0%, Fe 2 o 3 ≤0.50%, H 2 O≤1%; Fluorite: 2.2㎏, of which: CaF 2 ≥90%, H 2 O≤1%; albite: 2.3㎏, of which: SiO 2 ≥69.0%, Al 2 o 3 ≥17.0%, Fe 2 o 3 ≤0.35%, Na 2 O≥8.5%, H 2 O≤1%; the above percentages are mass percentages.

[0052] Before weighing, the composition content of CaO in quicklime should be detected every day, and the lime ratio should be adjusted according to the content of its composition.

[0053] The production steps are:

[0054] Before weighing, the composition...

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Abstract

The invention relates to E glass fiber with low boron and low softening point. The E glass fiber comprises the components in percentage by weight as follows: 54.2-55.3% of SiO2, 14.2-15.2% of Al2O3, 22.8-24.3% of CaO, 2.2-2.8% of MgO, 0.5-0.8% of (Na2O+K2O), 2.0-3.0% of B2O3 and the balance of Fe2O3. According to the E glass fiber with low boron and low softening point, the use level of borocalcite is lowered, so that the boron content in the E glass fiber is reduced, the dependence on imported borocalcite is reduced, and the cost of raw materials is greatly lowered. Compared with ECR (Electron Cyclotron Resonance) components, the softening point of the E glass fiber is reduced, the melting and forming temperature is reduced, and the energy consumption is reduced. The E glass fiber prepared is good in corrosion resistance and insulation performance and long in service life, and can satisfy performance demands of yarns on high pressure petroleum pipelines. According to the preparation method of the E glass fiber with low boron and low softening point provided by the invention, the process step is simplified, the preparation difficulty is reduced, and the energy loss is reduced, so that the work efficiency is improved while the cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of alkali-free glass fibers, and in particular relates to a low-boron and low-softening-point E glass fiber, a preparation method and an application. Background technique [0002] E-glass fiber, R 2 O(K 2 O+Na 2 O) ≤ 0.8%, is a kind of aluminum borosilicate composition, chemical stability, electrical insulation performance, strength are very good. It is mainly used as electrical insulation material, reinforcing material of FRP and tire cord, and used in composite cable support. [0003] At present, the alkali-free glass fiber used for high-pressure oil pipelines in the market is generally composed of ECR ​​components or traditional E-glass fiber formula. The above-mentioned alkali-free glass fibers either cannot meet the performance requirements of high-pressure oil pipeline yarns, or must use imported boronite, which greatly increases In addition to the cost of raw materials, it cannot meet the needs of...

Claims

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Application Information

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IPC IPC(8): C03C13/00C08K7/14
CPCC03C3/091C03C13/00
Inventor 刘术明邓贤朝倪海威陈锐苏宁
Owner NEIJIANG HUAYUAN ELECTRONICS MATERIALS
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