Preparation and application of amphiphilic calcite type calcium carbonate
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A calcite type, calcium carbonate technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problem of easy agglomeration of calcium carbonate, and achieve the effects of simple preparation process, low production cost and low price
Inactive Publication Date: 2019-04-19
GUILIN UNIV OF ELECTRONIC TECH
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[0011] The purpose of the present invention is to solve the problem that calcium carbonate is easy to agglomerate, and the amphiphilic calcium carbonate prepared by using a reasonable template has a stable cubic structure and is evenly dispersed
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Embodiment 1
[0043] A kind of preparation method of amphipathic calcite type calcium carbonate, comprises the following steps:
[0044] Step 1, the preparation of solution, respectively prepare 0.1M calcium chloride solution and sodium carbonate solution of 50ml;
[0045] Step 2, the addition of the template agent, 0.05g template agent polyoxyethylene polyoxypropylene ether diblock copolymer (F127) is added in the calcium chloride solution of step 1, stirs 2h on the magnetic stirrer, obtains the chlorine containing template agent Calcium solution;
[0046] Step 3, the preparation of amphiphilic calcite type calcium carbonate, under certain conditions, the sodium carbonate solution of 50ml step 1 is added dropwise to the calcium chloride solution containing template agent of step 2 and fully reacts, obtains calcium carbonate precipitation, then through ethanol and The amphiphilic calcite-type calcium carbonate can be obtained by washing with water three times and drying.
[0047] The XRD ...
Embodiment 2
[0056] A kind of preparation method of amphipathic calcite type calcium carbonate is identical with embodiment 1.
[0057] The application of amphiphilic calcite-type calcium carbonate as an electronic packaging material, the steps not specifically described are the same as in Example 1, except that 10 g of amphiphilic calcite-type calcium carbonate is added.
[0058] The thermal diffusivity test of the composite electronic packaging material, the results are shown in the third column of Table 1, and the thermal diffusivity is 0.0031.
Embodiment 3
[0060] A kind of preparation method of amphipathic calcite type calcium carbonate is identical with embodiment 1.
[0061] The application of amphiphilic calcite-type calcium carbonate as an electronic packaging material, the steps not specifically described are the same as in Example 1, except that 20 g of amphiphilic calcite-type calcium carbonate is added.
[0062] The thermal diffusivity test of electronic packaging materials, the results are shown in column 4 of Table 1, and the thermal diffusivity is 0.0042.
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Abstract
The invention discloses amphiphilic calcite type calcium carbonate. A polyoxyethylene polyoxypropylene-ether diblock copolymer (F127) serves as a soft template agent, calcium chloride as a calcium source is added into a sodium carbonate solution, the obtained calcium carbonate crystals are in a regular hexagon shape, the side length is 2.5-3 micrometers, all calcium carbonate crystals are evenly dispersed, and the amphiphilic calcite type calcium carbonate which is good in regularity, oleophylic and hydrophilic is obtained. The preparation method includes the following steps of 1, preparationof the solution, 2, addition of the template agent and 3, preparation of amphiphilic calcite type calcium carbonate. As an electronic packaging material, the calcium carbonate is fully mixed with epoxy resin (E44) and a curing agent for curing, and a heat-conductive reinforced electronic packaging material with the thermal diffusivity of 0.0024-0.0080 is obtained. The amphiphilic calcite type calcium carbonate has the advantages that calcium carbonate crystals are of calcite type, dispersion is uniform, the size is regular and 2.5-3 micrometers, the calcium carbonate has amphipathicity, an in-situ polymerization method is used, the preparation process is simple, the cost of the template agent is low, and the production cost is cheap.
Description
technical field [0001] The invention relates to electronic packaging materials, in particular to the preparation and application of an amphiphilic calcite-type calcium carbonate. Background technique [0002] With the development of electronic equipment and lighting equipment towards miniaturization, large-scale integration and high power, more and more heat will be generated during the operation of integrated circuits in electronic equipment, and the parts that generate heat are more concentrated. If the heat cannot be transferred out in time, the working efficiency and service life of the equipment will be greatly reduced, or even fail. Epoxy resin is usually used as an insulating packaging material for electronic devices, but its thermal conductivity is very low, only 0.1-0.2Wm at room temperature -1 K -1 Left and right, the coefficient of thermal expansion is large, it is difficult to stick together with silicon electronic components all the time, and a good heat dissi...
Claims
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