CN104944778A - High-temperature resistant glass bead for reflective film, and preparation method of glass bead - Google Patents

Abstract

The invention discloses a high-temperature resistant glass bead for a reflective film, and a preparation method of the glass bead. The glass bead is prepared from the following raw materials in parts by weight: 34-48 parts of silica powder, 22-33 parts of andalusite, 15-25 parts of abandoned foundry sand, 5-10 parts of aluminum dihydrogen tripolyphosphate, 14-22 parts of crushed brick powder, 4-8 parts of basic lead carbonate, 9-17 parts of aluminum nitride, 5-10 parts of zirconium diboride, 16-24 parts of phenacite, 3-6 parts of sodium hydrogen sulfate, 5-10 parts of electrolytic manganese residue and 4-7 parts of additive. According to the glass bead, the raw materials such as the phenacite, the andalusite, the crushed brick powder, the abandoned foundry sand, aluminum dihydrogen tripolyphosphate, aluminum nitride and zirconium diboride are added, so that the high-temperature resistance of the glass bead is improved; the heat distortion temperature is greater than 1400 DEG C; and the service life of the glass bead under a condition of high temperature is prolonged.

Description

A kind of tapetum lucidum pyroceram microballon and preparation method thereof

Technical field

The present invention relates to a kind of tapetum lucidum pyroceram microballon and preparation method thereof, belong to glass microballon and manufacture field.

Background technology

A kind of of many uses, a kind of type material that performance is special that glass microballon is that development in recent years is got up, be the small hollow glass spheroid of a kind of size, belong to ceramic.Glass microballon is the main raw material manufacturing light reflecting material, can be widely used in the field light reflecting materials such as highway, railway, airport, harbour, sea transport, mine, tunnel, fire-fighting, urban construction.Along with China is to the increasing of infrastructure construction dynamics of investment, the demand of glass microballon is increasing, simultaneously also more and more higher to the performance requriements of glass microballon.Current China only has minority producer to grasp the production technology of high refractive index glass micro pearl, and its product performance are very unstable, there is the shortcoming of high temperature resistant difference, and at high temperature easily thermal distortion, cannot meet market demands.

Summary of the invention

Of the present inventionly be for the deficiencies in the prior art, provide a kind of tapetum lucidum pyroceram microballon and preparation method thereof, the heat-drawn wire of this glass microballon is greater than 1400 DEG C.

For achieving the above object, the technical solution used in the present invention is as follows:

A kind of tapetum lucidum pyroceram microballon, is made up of the raw material of following weight part: silicon powder 34-48, andaluzite 22-33, discarded molding sand 15-25, aluminium dihydrogen tripolyphosphate 5-10, useless brick powder 14-22, white lead powder 4-8, aluminium nitride 9-17, zirconium diboride 5-10, phenakite 16-24, sodium pyrosulfate 3-6, electrolytic manganese residues 5-10, additive 4-7;

Described additive is mixed by the raw material of following weight part: dysprosium oxide 2-3, nanometer palygorskite 4-6, ceric hydroxide 3-4, antimonous acid anhydride 5-8, barium molybdate 6-12, sodium wolframate 4-7, Bismuth Subcarbonate 8-14, titanium sponge 3-5, antimony sulfide 2-4, zinc selenide 2-3.

A preparation method for tapetum lucidum high durable glass microballon, comprises the following steps:

(1) andaluzite, discarded molding sand, phenakite are mixed, be positioned in microwave baking furnace, first at the H of 3-4MPa ₂under atmosphere, when microwave heating is to 420-460 DEG C, insulation 15-20min, air cooling to normal temperature, then under the Ar atmosphere of 2-3MPa, when microwave heating is to 500-550 DEG C, insulation 10-15min, take out, air-cooled to normal temperature, pulverize, cross 100-150 mesh sieve, add appropriate water stirring and make the suspension that concentration is 40-50%, 1500-2000r/min speed lapping 15-20min, is delivered to after grinding in spray-drying tower and is spray dried to powder at 150-200 DEG C of temperature;

(2) powder obtained by above-mentioned spraying dry mixes with silicon powder, useless brick powder, aluminium nitride, zirconium diboride, white lead powder, is added in electrolytic furnace, is heated to material and all melts, add remaining raw material again, stir 5-7min, then leave standstill 12-16min, blanking;

(3) by under the fused solution that goes out put into clear water and carry out shrend, by de-for moisture content dry after, put into dryer and dry, then by dry the glass particle material that obtains by fragmentation, screening, balling-up, again sieve, wash, dry after, formation glass microballon product.

Beneficial effect of the present invention:

Raw material of the present invention with the addition of the raw material such as phenakite, andaluzite, useless brick powder, discarded molding sand, aluminium dihydrogen tripolyphosphate, aluminium nitride, zirconium diboride, improve the resistance to elevated temperatures of glass microballon, heat-drawn wire is greater than 1400 DEG C, extends glass microballon work-ing life under the high temperature conditions.

Embodiment

A kind of tapetum lucidum pyroceram microballon, is made up of the raw material of following weight (kg): silicon powder 42, andaluzite 29, discarded molding sand 20, aluminium dihydrogen tripolyphosphate 8, useless brick powder 18, white lead powder 6, aluminium nitride 13, zirconium diboride 8, phenakite 22, sodium pyrosulfate 4, electrolytic manganese residues 8, additive 5;

Described additive is mixed by the raw material of following weight (kg): dysprosium oxide 2.5, nanometer palygorskite 5, ceric hydroxide 3, antimonous acid anhydride 6, barium molybdate 8, sodium wolframate 5, Bismuth Subcarbonate 12, titanium sponge 4, antimony sulfide 3, zinc selenide 3.

A preparation method for tapetum lucidum high durable glass microballon, comprises the following steps:

(1) andaluzite, discarded molding sand, phenakite are mixed, be positioned in microwave baking furnace, first at the H of 3MPa ₂under atmosphere, during microwave heating to 440 DEG C, insulation 18min, air cooling to normal temperature, then under the Ar atmosphere of 2MPa, during microwave heating to 520 DEG C, insulation 12min, take out, air-cooled to normal temperature, pulverize, cross 120 mesh sieves, add appropriate water stirring and make the suspension that concentration is 45%, 1800r/min speed lapping 18min, is delivered to after grinding in spray-drying tower and is spray dried to powder at 180 DEG C of temperature;

(2) powder obtained by above-mentioned spraying dry mixes with silicon powder, useless brick powder, aluminium nitride, zirconium diboride, white lead powder, is added in electrolytic furnace, is heated to material and all melts, then add remaining raw material, stir 6min, then leave standstill 14min, blanking;

(3) by under the fused solution that goes out put into clear water and carry out shrend, by de-for moisture content dry after, put into dryer and dry, then by dry the glass particle material that obtains by fragmentation, screening, balling-up, again sieve, wash, dry after, formation glass microballon product

The Refractive Index of Glass Microspheres adopting above-described embodiment to prepare is 1.96, and roundness is 99%, and heat-drawn wire is 1450 DEG C.

Claims (2)

1. a tapetum lucidum pyroceram microballon, it is characterized in that, be made up of the raw material of following weight part: silicon powder 34-48, andaluzite 22-33, discarded molding sand 15-25, aluminium dihydrogen tripolyphosphate 5-10, useless brick powder 14-22, white lead powder 4-8, aluminium nitride 9-17, zirconium diboride 5-10, phenakite 16-24, sodium pyrosulfate 3-6, electrolytic manganese residues 5-10, additive 4-7;

Described additive is mixed by the raw material of following weight part: dysprosium oxide 2-3, nanometer palygorskite 4-6, ceric hydroxide 3-4, antimonous acid anhydride 5-8, barium molybdate 6-12, sodium wolframate 4-7, Bismuth Subcarbonate 8-14, titanium sponge 3-5, antimony sulfide 2-4, zinc selenide 2-3.

2. a preparation method for tapetum lucidum high durable glass microballon as claimed in claim 1, is characterized in that comprising the following steps:

(1) andaluzite, discarded molding sand, phenakite are mixed, be positioned in microwave baking furnace, first at the H of 3-4MPa ₂under atmosphere, when microwave heating is to 420-460 DEG C, insulation 15-20min, air cooling to normal temperature, then under the Ar atmosphere of 2-3MPa, when microwave heating is to 500-550 DEG C, insulation 10-15min, take out, air-cooled to normal temperature, pulverize, cross 100-150 mesh sieve, add appropriate water stirring and make the suspension that concentration is 40-50%, 1500-2000r/min speed lapping 15-20min, is delivered to after grinding in spray-drying tower and is spray dried to powder at 150-200 DEG C of temperature;

(2) powder obtained by above-mentioned spraying dry mixes with silicon powder, useless brick powder, aluminium nitride, zirconium diboride, white lead powder, is added in electrolytic furnace, is heated to material and all melts, add remaining raw material again, stir 5-7min, then leave standstill 12-16min, blanking;

(3) by under the fused solution that goes out put into clear water and carry out shrend, by de-for moisture content dry after, put into dryer and dry, then by dry the glass particle material that obtains by fragmentation, screening, balling-up, again sieve, wash, dry after, formation glass microballon product.