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Porous resin grinding disc and preparation method thereof

A porous resin and grinding disc technology, which is applied in grinding tools, grinding/polishing equipment, abrasives, etc., can solve the problems of high cost, high requirements for use and maintenance, and large loss of grinding discs

Active Publication Date: 2020-10-23
湖南圣高机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing metal grinding discs are prone to scratches. At the same time, due to the need to accommodate abrasives and grinding debris, the surface of the disc must be trimmed and grooved regularly. The loss of the grinding disc is large, and the requirements for use and maintenance are high.
Moreover, the grinding waste liquid produced by processing contains heavy metals, and the cost of subsequent harmless treatment is high

Method used

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  • Porous resin grinding disc and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 20g of water (water as a pore-forming agent) and 100g of white carbon black to 1800g of polyurethane resin white material (polyether 303), add 200g of curing agent MOCA (3,3'-dichloro-4,4'-bis Aminodiphenylmethane), fully stirred evenly with a high-speed mixer, then added 2100g of polyurethane resin black material (PAPI), fully stirred evenly with a high-speed mixer, then poured the mixture into a stainless steel mold with a diameter of 610mm, and rapidly cured at room temperature to obtain Porous polyurethane resin disc.

[0027] The obtained porous polyurethane resin disk had a Shore hardness of 70D and a proportion of pores of 15%.

[0028] A 2-inch sapphire wafer was lapped using this porous polyurethane resin disc, compared to a conventional resin-copper disc. The test of the grinding rate adopts the surface grinder SK-610Y, the pressure is 300g / cm 2 , speed 60rpm. The grinding fluid is polycrystalline diamond grinding fluid with particle size D50 of 6 μm. ...

Embodiment 2

[0033] Add 200g of polymer hollow microspheres and 200g of cerium oxide micropowder into 3600g of epoxy resin, stir well with a high-speed mixer, then add 500g of epoxy resin curing agent T31, stir well with a high-speed mixer, pour the mixed slurry Put it into a stainless steel mold with a diameter of 610mm, and cure it at 60°C for 24 hours to form a porous epoxy resin disk.

[0034] The Shore hardness of the obtained porous epoxy resin disk was 60D, and the proportion of pores was 60%.

[0035] The copper sheet was ground with the porous epoxy resin disc, and compared with the traditional resin copper disc. The test of the grinding rate adopts the surface grinder SK-610Y, the pressure is 200g / cm 2 , speed 60rpm. The grinding fluid is a single crystal diamond grinding fluid with a particle size D50 of 5 μm.

[0036] Grinding Disc Type Grinding rate RR(μm / min) Copper roughness after grinding (nm) Porous Epoxy Disc 6.2 26 Resin copper plate 6.0 32...

Embodiment 3

[0039] Mix 4000g of phenolic resin powder, 400g of epoxy resin powder, 300g of curing agent hexamethylenetetramine, 200g of glass hollow microspheres and 50g of glass fiber powder, pour it into a metal mold with a diameter of 610mm, and heat it with a press forming. The pressure is 20Mpa, the heating temperature is 180°C, and the heat and pressure are cured for 2 hours to form a porous mixed resin disk.

[0040] The obtained porous mixed resin disk had a Shore hardness of 90D and a proportion of pores of 5%.

[0041] The stainless steel sheet is ground using the porous mixed resin disc, and compared with the traditional resin iron disc. The test of the grinding rate adopts the surface grinder SK-610Y, the pressure is 300g / cm 2 , speed 60rpm. The grinding fluid is a single crystal diamond grinding fluid with a particle size D50 of 3 μm.

[0042] Grinding Disc Type Grinding rate RR(μm / min) Copper roughness after grinding (nm) Porous Mixed Resin Tray 2.0 ...

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Abstract

The invention discloses a porous resin grinding disc and a preparation method thereof. The grinding disc is prepared from following components including 30-95 parts of resin, 0.1-15 parts of a pore forming agent, 0.1-20 parts of a curing agent and 0.1-50 parts of filler. The Shore hardness of the grinding disc is 60-90 D. The grinding disc has a porous structure, and the occupied area of pores is5%-60% of the whole grinding surface. The preparation method of the porous resin grinding disc includes the following steps that the resin, the pore forming agent, the curing agent and the filler areevenly mixed according to a certain ratio, a mixture is poured into a metal mold, curing forming is carried out, after mold stripping, turning is carried out, and the finished porous resin grinding disc is obtained. Scratches of the porous resin grinding disc can be reduced while the high grinding rate is kept, and the surface quality of ground workpieces is improved.

Description

technical field [0001] The invention relates to a porous resin grinding disc and a preparation method thereof, belonging to the technical field of precision plane grinding and polishing. Background technique [0002] In the surface processing of materials such as metals, ceramics, crystals, and glasses, the grinding disc plays a vital role in the grinding and polishing process as the carrier of the abrasive. At present, various metal grinding discs are mainly used for plane grinding, such as copper discs, iron discs, tin discs, resin copper discs or resin iron discs. [0003] Existing metal grinding discs are prone to scratches, and at the same time, due to the need to accommodate abrasives and grinding debris, the disc surface must be trimmed and grooved regularly, resulting in large wear and tear of the grinding disc, and high requirements for use and maintenance. Moreover, the grinding waste liquid generated during processing contains heavy metals, and the cost of subseq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B37/14B24D3/32B24D3/34B24D18/00
CPCB24B37/14B24D3/32B24D3/344B24D3/34B24D18/0009
Inventor 罗惠胡晓刚马俪芳
Owner 湖南圣高机械科技有限公司
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