Heat-dissipating composition and lubricating plate

A composition and dispersion technology, applied in the directions of lubricating compositions, heat exchange materials, synthetic resin layered products, etc., can solve the problems of poor machining accuracy, difficult cutting and removal, and tool wear and tear, and achieve increased flatness. The effect of uniformity, improved precision, and good mechanical strength

Active Publication Date: 2015-12-16
MEGAOLOGY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the lack of the aforementioned prior art, the present invention discloses a heat dissipation composition, the film formed by it provides excellent lubricating ability, heat dissipation and water solubility, thereby improving poor machining accuracy, tool wear and cutting chip removal, etc. At the same time, the ingredients and their content in the heat dissipation composition provide excellent dispersibility, so it can inhibit the generation of agglomerated gel or rubber blocks, thereby improving the processing accuracy

Method used

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  • Heat-dissipating composition and lubricating plate

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0051] First Embodiment: Preparation Method of Waterborne Polyurethane Resin

[0052] First, put diisocyanate, polyester diol, polyether diol (containing ethoxylated diol) and 2,2 - Dimethylolpropionic acid (GEOSecialitychemicals, IncDMPA), to carry out a synthesis reaction to obtain a prepolymer, the reaction time is 1.0 hours to 5.0 hours, in which 2,2-dimethylolpropionic acid is used as an anionic group source, containing Ethoxylated glycols are used as a source of nonionic groups. During the synthesis reaction, an organic solvent is added to the reactants to reduce the viscosity of the reactants.

[0053] It should be noted that the diisocyanate used in the above synthesis reaction is selected from 2,4- / 2,6-toluene diisocyanate (TDI, toluenediisocyanate) (BayerDesmodurTDI), 4,4'-diphenylmethane diisocyanate Isocyanate (MDI, methylenediphenyldiisocyanate) (BayerDesmodurMDI), isophorone diisocyanate (IPDI, isophoronediisocyanate) (BayerDesmodurIPDI), 4,4'-dicyclohexylmetha...

no. 2 approach

[0065] Second Embodiment: Preparation Method of Waterborne-Silicone Polyurethane Resin

[0066] Under oil bath heating conditions (50~100°C), add appropriate proportions of diisocyanate, polyester diol, polyether diol and 2,2-dimethyl alcohol propionic acid into the reaction bottle to synthesize Reaction, the reaction time is 1.0 hours to 5.0 hours. It should be understood that the types and selection conditions of the diisocyanate, polyester diol, polyether diol and organic solvent in this embodiment are the same as those in the first embodiment.

[0067] Next, an organic solvent is added to the above-mentioned reactant to reduce the viscosity of the reactant, and a polysiloxane copolymer is added to participate in the synthesis reaction, and a prepolymer is obtained after 0.5 hours to 4.0 hours. In this embodiment, the polymer The siloxane copolymer is polydimethylsiloxane copolymer or polydimethylsiloxane diamine (its general formula is R-(Si(CH 3 ) 2 -O) n -R, R=OH or ...

no. 3 approach

[0071] Third Embodiment: Preparation Method of Water-Based Silicone / Fluorinated Polyurethane Resin

[0072] Under oil bath heating conditions (50~100°C), add appropriate proportions of diisocyanate, polyester diol, polyether diol and 2,2-dimethyl alcohol propionic acid into the reaction bottle to synthesize Reaction, the reaction time is 1.0 hours to 5.0 hours. It should be understood that the types and selection conditions of the diisocyanate, polyester diol, polyether diol and organic solvent in this embodiment are the same as those in the first embodiment.

[0073] Then, an organic solvent is added to the above-mentioned reactant to reduce the viscosity of the reactant, and polysiloxane copolymer and polytetrafluorocarbon glycol (its general formula is HO-(CF 2 CF 2 ) n -OH, molecular weight 500-3000) (Shin-Etsu Chemical polytetrafluorocarbon diol) participates in the synthesis reaction, and the prepolymer is obtained after 0.5 hours to 4.0 hours. It should be understoo...

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Abstract

The invention relates to a heat dissipation composition. The heat dissipation composition comprises polyurethane resin, a neutralizer and a water-phase solvent, wherein a side chain of the polyurethane resin has an anion group containing carboxyl; a main chain and the side chain of the polyurethane resin have non-ionic groups which are formed by polyethylene glycol molecules; before the polyurethane resin is added for emulsifying, NCO (Isocyanate Group)% (in percent by weight) reaction titration value of isocyanate is 50%-85% of the NCO% theoretical value; besides, the weight of the anion group and the neutralizer preferably accounts for 3.0wt%-6.0wt% of the total weight of the water-based polyurethane dispersion liquid. The heat dissipation composition disclosed by the invention has excellent dispersion; a lubricating sheet material prepared from the heat dissipation composition has excellent lubricating capacity, heat dissipation and water solubility.

Description

technical field [0001] The invention relates to a water-based polyurethane dispersion, in particular to a water-based polyurethane dispersion applied to the coating of micro-cutting and drilling soft board substrates. Background technique [0002] At present, CNC lathes are generally used for micro cutting and drilling of printed circuit boards (PCB, printed circuit board) or other boards, and the processing is performed with extremely small tool (drill needle) size (0.6mm~0.01mm) at high speed It is carried out under the processing parameters (about 160Krpm), so the tool spindle or chuck will produce a great centrifugal deflection, and when cutting or drilling, the high heat generated by the friction between the tool and the workpiece will easily cause the tool to break The deformation greatly affects the machining accuracy, and even causes irregular burrs and burrs on the resulting cutting surface, and also causes serious wear and tear of the tool. [0003] The prior art ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M107/44C10M107/50C09K5/14C08G18/66C08G18/61C08G18/62B32B27/40B32B27/06B32B15/095B32B15/20C10N50/02
Inventor 宋文宁
Owner MEGAOLOGY CHEM
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