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PBO fiber resin diamond wire and preparation method thereof

A technology of fiber resin and diamond wire, which is applied in the field of PBO fiber resin diamond wire and its preparation, can solve the problems of high cost, low material utilization rate, large slit of resin diamond wire, etc.

Active Publication Date: 2015-12-23
徐州博创建设发展集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional resin diamond wire usually uses metal wire (generally high carbon steel) as its base material. The diameter of the metal wire in the existing resin diamond wire is generally more than 80 μm. For example, during the cutting process, about 38% to 41% of the silicon material turns into silicon powder and enters the sewer. The existing resin diamond wire has large slits and low material utilization, resulting in high costs.

Method used

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  • PBO fiber resin diamond wire and preparation method thereof
  • PBO fiber resin diamond wire and preparation method thereof

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preparation example Construction

[0035] The invention provides a kind of preparation method of PBO fiber resin diamond wire, comprising the following steps:

[0036] A) performing plasma treatment on the PBO fiber busbar to obtain a plasma-treated busbar, the diameter of the PBO fiber busbar being 65-80 μm;

[0037] B) Coating the resin slurry on the plasma-treated bus bar and curing it to obtain the PBO fiber resin diamond wire.

[0038] In the present invention, the surface of the PBO fiber busbar is preferably cleaned, dried and then plasma-treated to obtain a plasma-treated busbar. The present invention preferably uses a mixed solution of pure water and alcohol to clean the busbar, and the ratio of the alcohol is preferably 10-20%, more preferably 13-15%; the present invention has no special restrictions on the type of the cleaning device , in the present invention, the cleaning device is 1-3 meters long, the busbar enters the cleaning device from the inlet, and blows the surface after coming out from th...

Embodiment 1

[0047] Use lotion to clean the PBO fiber busbar. The lotion is pure water, add 10% alcohol, and dry it at 40°C after cleaning. The busbar after drying enters the surface plasma treatment stage. Placed symmetrically, with a diameter of 10mm, the two faces of the busbar are treated separately. The line speed corresponding to the busbar is 10m / min, and the plasma power is 0.5kw.

[0048] The resin slurry was coated on the surface of the plasma-treated busbar, pre-cured at 150°C for 3s, and then cured at 200°C for 8 hours to obtain a PBO fiber resin diamond wire. The resin slurry contains 20% phenolic resin, 20% silicon carbide, 40% diamond particles with a particle size of 8 μm and 20% acetone. The thickness of the coating on the surface of the finally obtained PBO fiber resin diamond wire is 6 μm, and the composition content is 25% of phenolic resin, 25% of silicon carbide and 50% of diamond.

[0049] The present invention uses the PBO fiber resin diamond wire obtained in this...

Embodiment 2

[0051] Use lotion to clean the PBO fiber busbar. The lotion is pure water, add 10% alcohol, and dry it at 50°C after cleaning. The busbar after drying enters the surface plasma treatment stage. Placed symmetrically, with a diameter of 40mm, the two faces of the busbar are treated separately. The line speed corresponding to the busbar is 80m / min, and the plasma power is 5kw.

[0052] The resin slurry was coated on the surface of the plasma-treated busbar, pre-cured at 250°C for 3s, and then cured at 200°C for 8 hours to obtain a PBO fiber resin diamond wire. The resin slurry contains 20% phenolic resin, 25% alumina with a particle size of 1 μm, 40% diamond particles with a particle size of 8 μm and 15% acetone. The thickness of the coating on the surface of the finally obtained PBO fiber resin diamond wire is 7 μm, and the composition content is 25% of phenolic resin, 30% of aluminum oxide and 45% of diamond.

[0053] The present invention uses the PBO fiber resin diamond wir...

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Abstract

The invention provides a PBO fiber resin diamond wire. The PBO fiber resin diamond wire comprises a PBO fiber mother wire and a resin coating coated on the surface of the PBO fiber mother wire; the diameter of the PBO fiber mother wire is 65-80 micrometers. The PBO fiber serves as the mother wire of the resin diamond wire, so that the diameter of the PBO fiber resin diamond wire is further reduced compared with a traditional metal base material. Compared with an existing metal base material resin diamond wire, the diameter of the mother wire of the PBO fiber resin diamond wire is only 65-80 micrometers, and a higher strip yield and a higher material utilization rate are achieved in the cutting process of silicon slices. The experiment result shows that when the PBO fiber resin diamond wire is used for cutting silicon rods, the strip yield is 99.7%, the rate of finished products is 96.34%, and the material utilization rate is 67.67%. The invention further provides a preparation method for the PBO fiber resin diamond wire.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic material processing, and in particular relates to a PBO fiber resin diamond wire and a preparation method thereof. Background technique [0002] In the 1990s, in order to solve the processing problem of large-size silicon wafers internationally, wire saw processing technology was used to cut silicon rods into pieces. The early wire saw processing technology used bare metal wires and free abrasives. During the processing, the abrasives were added as a third party between the metal wire and the workpiece to produce cutting action. This technique has been successfully used in the processing of silicon and silicon carbide. In order to further shorten the processing time, and to process other hard substances and ceramics that are difficult to process, people fix diamond abrasives on metal wires in a certain way, thus producing a fixed diamond wire saw. [0003] Diamond wire saw, also known as di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28D5/04
Inventor 刘伟万容兵赵涛
Owner 徐州博创建设发展集团有限公司
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