Molybdate additive and polycrystalline silicon or monocrystalline silicon cutting fluid containing same

A silicon cutting fluid and additive technology, applied in additives, petroleum industry, lubricating composition, etc., can solve the problems of complex manufacturing process, unfriendly environment, high cost, etc., achieve good cutting effect, avoid chemical bonding adsorption, and stable quality Effect

Active Publication Date: 2011-05-04
SHANGHAI EMPEROR OF CLEANING HI TECH
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of the existing polysilicon or single crystal silicon cutting fluid manufacturing process, such as complex, high cost, unfriendly to the environment, etc., to provide Molybdate additives and polysilicon or monocrystalline silicon cutting fluid containing the molybdate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Molybdate additive and polycrystalline silicon or monocrystalline silicon cutting fluid containing same
  • Molybdate additive and polycrystalline silicon or monocrystalline silicon cutting fluid containing same
  • Molybdate additive and polycrystalline silicon or monocrystalline silicon cutting fluid containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. The formula of the molybdate additive is sodium molybdate: oleic acid diethanolamide borate=1:5.

[0033] 2. Multi (single) silicon cutting fluid formula (1000g):

[0034]

[0035] 3. Preparation of multi-(single) crystal silicon cutting fluid:

[0036] Slowly add the alkyl glucoside, isopropanol, and molybdate additives in the above formula to polyethylene glycol 200 under continuous stirring, and then slowly add disodium edetate after the solution is clarified, and stir until uniform Instantly.

[0037] The product is mixed with the abrasive material (silicon carbide sand) at a ratio of 1:0.92, the suspension rate of the mortar within 48 hours of the product is 84.2%, and the recycling rate of the effective components of the cutting fluid is 93.5%. The product has good repeatability, can be used repeatedly for a long time, and the storage time can reach 36 months.

Embodiment 2

[0039] 1. The formula of the molybdate additive is sodium molybdate: oleic acid diethanolamide borate=1:10.

[0040] 2. Multi (single) silicon cutting fluid formula (1000g):

[0041]

[0042] 3. Preparation of multi-(single) crystal silicon cutting fluid:

[0043] Dissolve polyethylene glycol 200 with deionized water, and slowly add the alkyl glucoside, isopropanol, and molybdate additives in the above formula to the polyethylene glycol 200 under continuous stirring. Slowly add disodium ethylenediaminetetraacetate and stir until uniform.

[0044] The product is mixed with the abrasive material (silicon carbide sand) at a ratio of 1:0.92, the suspension rate of the mortar within 48 hours of the product is 83.5%, and the recycling rate of the effective components of the cutting fluid is 93.1%. The product has good repeatability, can be used repeatedly for a long time, and the storage time can reach 36 months.

Embodiment 3

[0046] 1. The formula of the molybdate additive is sodium molybdate: oleic acid diethanolamide borate=1:5.

[0047] 2. Multi (single) silicon cutting fluid formula (1000g):

[0048]

[0049] 3. Preparation of multi-(single) crystal silicon cutting fluid:

[0050] Heat polyethylene glycol 600 in a water bath to about 40°C, keep stirring continuously at this temperature, and slowly add the alkyl glucoside, isopropanol, alkyl glycoside, and molybdate additives in the above formula one by one until the solution After clarification, slowly add disodium ethylenediamine tetraacetate and stir until uniform.

[0051] When this product is mixed with abrasive material (silicon carbide sand) at a ratio of 1:0.92, the suspension rate of the mortar within 48 hours of the product is 84%, and the recycling rate of the effective components of the cutting fluid is 93.7%. The product has good repeatability, can be used repeatedly for a long time, and the storage time can reach 36 months.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a molybdate additive, which is a mixture of sodium molybdate and oleic diethanolamide borate ester according to a mass ratio of 1:5-1:20. The invention also discloses polycrystalline silicon or monocrystalline silicon cutting fluid, which comprises the following components in percentage by mass: 30 to 90 percent of polyethylene glycol 100-1000, 0.5 to 5 percent of nonionic surfactant, 1 to 10 percent of chelant, 0.5 to 5 percent of organic alcohol, 1 to 5 percent of molybdate additive and 0 to 67 percent of deionized water. The cutting fluid overcomes the defects of complicated preparation process, high cost, environmental pollution and the like of the conventional polycrystalline (monocrystalline) silicon cutting fluid, has excellent technical characteristics, high repeatability and stable quality, can shorten disorderly closedown time, effectively solves the problem of redeposit of cuttings and abrasive powder, integrates penetration, lubrication, cooling, cleaning and antirust performance, and is nontoxic and harmless, low in cost and high in total yield.

Description

technical field [0001] The invention relates to a molybdate additive, and also relates to a cutting fluid containing the molybdate additive, in particular to a polysilicon or monocrystalline silicon cutting fluid containing the molybdate additive. Background technique [0002] With the rapid development of information technology and solar energy industry, the global demand for polycrystalline silicon and monocrystalline silicon is growing rapidly. China is the third largest producer of solar cells in the world. With the rapid development of the photovoltaic industry, the production of silicon wafers in the upper reaches of the photovoltaic industry is becoming more and more important. In order to reduce costs and improve production efficiency, high-performance silicon wafers have become the "new favorite" in the silicon wafer market. In the entire silicon wafer production process, the three links of crystal pulling, truncation, and squaring all have a certain loss of silico...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/12C10M125/00C10M139/00C10M173/02C10N30/16C10N30/12C10N40/24
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap