Grinding liquid used for grinding back surface of storage hard disk magnetic head
A technology of back grinding and storage, which is applied in the field of grinding liquid, which can solve the problems of high price and low grinding rate, and achieve the effect of good dispersion stability and uniform particle distribution
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Embodiment 1
[0016] Embodiment one: get single crystal diamond superfine powder 0.5g, polyoxyethylene (20) sorbitan monooleate nonionic surfactant 2g, pentaerythritol ester 60g, carbon 12 n-paraffin mineral oil 240g, di-tert-butyl 1 g of p-cresol anti-oxidant preservative, 0.1 g of benzotriazole derivative anti-oxidant preservative, 1 g of 889D non-silicon antifoaming agent of Lubrizol Company, 1 g of N, N-ethylene diester amide antistatic agent, fully mixed to make It becomes a suspension-like grinding liquid. The back of the magnetic head of the computer is ground with the abrasive liquid, and the surface roughness of the back of the magnetic head can reach 0.3-0.4nm.
Embodiment 2
[0017] Embodiment 2: Take 0.8g of single crystal diamond superfine powder, 2g of fatty alcohol polyoxyethylene ether nonionic surfactant, 80g of polyalphaolefin, 220g of carbon 13 isoparaffin mineral oil, di-tert-butyl p-cresol antioxidant Preservative 1.5g, benzotriazole derivative anti-oxidant preservative 0.1g, Lubrizol 889D non-silicon antifoaming agent 1g, N, N-ethylene diester amide antistatic agent 1g, mix well to make it into a suspension Slurry. The back of the magnetic head of the computer is ground with the abrasive liquid, and the surface roughness of the back of the magnetic head can reach 0.3-0.4nm.
Embodiment 3
[0018] Embodiment three: get single crystal diamond superfine powder 0.6g, sorbitan monooleate nonionic surfactant 2g, natural refined rapeseed oil 50g, carbon 13 n-paraffin mineral oil 250g, high temperature antioxidant liquid mixing two Alkyl diphenylamine 1g, IRGALUBEAF1 liquid ester polymer defoamer 1g, nonylphenol polyoxyethylene ether 1g, mix well to make it into a suspension-like grinding liquid. The back of the magnetic head of the computer is ground with the abrasive liquid, and the surface roughness of the back of the magnetic head can reach 0.3-0.4nm.
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