CN105331009A - Powdery ardealite filler and preparation thereof - Google Patents
Powdery ardealite filler and preparation thereof Download PDFInfo
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- CN105331009A CN105331009A CN201510845933.5A CN201510845933A CN105331009A CN 105331009 A CN105331009 A CN 105331009A CN 201510845933 A CN201510845933 A CN 201510845933A CN 105331009 A CN105331009 A CN 105331009A
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Abstract
The invention belongs to the field of PVC (Polyvinyl Chloride) production fillers, and particularly relates to powdery ardealite filler. The ardealite is subjected to temperature rise sintering until the surface temperature of the ardealite is 180-190DEG C, the ardealite is grinded until a grain diameter is 60-80mu m, and then, the ardealite is cooled to a room temperature to obtain beta-type hemihydrate gypsum; processing aid and dispersant are added, mixing at a high speed is performed for 5-8min, and the mixture is grinded into powder after the mixture is subjected to constant temperature curing for 30-60min to obtain the powdery ardealite filler. The filler has the advantages of good thermostability and proper foaming property. The method has the advantages of simple technology and low cost.
Description
Technical field
The invention belongs to PVC and produce filler field, be specifically related to a kind of powdery phosphogypsum filler and preparation thereof.
Background technology
Filling-modified is one of basic means of modifying plastics, refers to, in grog molding process, add inorganic or organic filler, thus the processing characteristics of plastic material or use properties are improved, or reduces material cost.As a rule, the cost issues of filler directly affects the height of production cost; And along with plastic material Application Areas constantly expands, higher requirement is proposed to the performance of the mechanical property of material and optical, electrical, magnetic, each side such as fire-retardant, is produced a desired effect by filling-modified being easy to.
China's plastics industry is started late, and initial normal employing calcium carbonate is that igelite prepared by filler, but the consistency difference of mineral filler and macromolecular material is large, therefore makes the application of calcium carbonate in igelite be restricted.Nowadays, be improve the dispersiveness of filler, a large amount of nano-sized filler swarms out, but due to its cost high, the problem of complex process, up to now, plastic working industry no matter from processing units, or performance and price is not all carried out the preparation using nano-sized filler; And some metal ion in filler, normal and organic resin directly or indirectly acts on, and affects the internal structure of resin, as in polyvinyl resin, the metal ion such as iron, cupric ion not only affects the color and luster of goods, and can make resin depolymerization man-hour adding, and then affects thermostability; Further, in high-temperature resistance plastice, be heated to more than 300 DEG C containing aluminum ions filler, in filling-material structure, water is released, and the internal structure of plastics is destroyed.
Summary of the invention
The present invention, for solving the problems of the technologies described above, provide a kind of phosphogypsum filler of of fine quality, Heat stability is good, and cost is low, the simple preparation method of technique.
Be achieved especially by following scheme:
A kind of powdery phosphogypsum filler, raw material comprises by weight ratio: 100-150 part phosphogypsum, 2-4 part dispersion agent, 3-7 part processing aid.
Described dispersion agent is one or more mixtures in paraffin, citrate, stearate, Poly Propylene Wax, polyethylene wax.。
Described processing aid is xylogen.
Its preparation method is: phosphogypsum being carried out intensification, to sinter to phosphogypsum surface temperature be after 180-190 DEG C, being 60-80 μm, being cooled to normal temperature through being ground to particle diameter, obtains beta-type semi-hydrated gypsum; Add processing aid and dispersion agent and carry out high-speed mixing 5-8min, after thermostatic curing 30-60min, then pulverize, obtain powdery phosphogypsum filler.
Described intensification sintering first at temperature is 100 DEG C, burns 20min, is then that 5-8 DEG C/min heats up with speed.
Described high-speed mixing, its rotating speed is 700-800r/min.
Described thermostatic curing, its temperature is 60-90 DEG C.
Beneficial effect of the present invention
Phosphogypsum, through sintering pre-treatment, removes the impurity in phosphogypsum and crystal water, improves the whiteness of phosphogypsum, and generates beta-type semi-hydrated gypsum, then controls grain diameter through grinding, and meet the basic demand of PVC filler, cost is low, adopt grinding and high-speed mixing xylogen to carry out modification to phosphogypsum, its modification is even, and modified effect is good, can improve thermotolerance and the mechanical property of PVC, the free body on modified phosphogypsum surface reduces, and enters without external adding water in modifying process, prevents beta-type semi-hydrated gypsum to meet water moisture absorption, and then reduces the whipability of filler, pass through thermostatic curing again, further modification beta-type semi-hydrated gypsum performance, improve the thermal stability of phosphogypsum filler, utilize dispersion agent to improve xylogen to distribute in beta-type semi-hydrated gypsum, make applying filler in PVC material, be conducive to suppressing PVC material degradation with aging, and the effect of dispersion agent can serve as the compatilizer between xylogen and PVC, by conservative control technical parameter, beta-type semi-hydrated gypsum, xylogen and dispersion agent have good synergistic effect, complexing can be carried out to metal ion in phosphogypsum, and then eliminate metal ion to the detrimentally affect in the course of processing of PVC material, and then make the initial stage thermostability of PVC material, heat aging property, comprehensive mechanical property index is improved.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
A kind of powdery phosphogypsum filler, raw material comprises: 110kg phosphogypsum, 4kg dispersion agent, 6kg Spruce lignin.
Described dispersion agent is in mass ratio: paraffin, citrate, stearate, Poly Propylene Wax, polyethylene wax=1:1:1:1:1.
Its preparation method is: phosphogypsum being carried out intensification, to sinter to phosphogypsum surface temperature be after 180-190 DEG C, being 70 μm, being cooled to normal temperature through being ground to particle diameter, obtains beta-type semi-hydrated gypsum; Add processing aid and dispersion agent and mix 6min under rotating speed is 708r/min, then to be placed in temperature be at 75 DEG C after thermostatic curing 35min, then pulverize, obtain powdery phosphogypsum filler.
Described intensification sintering first at temperature is 100 DEG C, burns 20min, is then that 7 DEG C/min heats up with speed.
Embodiment 2
A kind of powdery phosphogypsum filler, raw material comprises: 140kg phosphogypsum, 2.6kg dispersion agent, 4.8kg needlebush quality.
Described dispersion agent is citrate.
Its preparation method is: phosphogypsum being carried out intensification, to sinter to phosphogypsum surface temperature be after 188 DEG C, being 73 μm, being cooled to normal temperature through being ground to particle diameter, obtains beta-type semi-hydrated gypsum; Add processing aid and dispersion agent and mix 7min under rotating speed is 780r/min, then to be placed in temperature be at 70 DEG C after thermostatic curing 50min, then pulverize, obtain powdery phosphogypsum filler.
Described intensification sintering first at temperature is 100 DEG C, burns 20min, is then that 5 DEG C/min heats up with speed.
Embodiment 3
A kind of powdery phosphogypsum filler, raw material comprises: 130kg phosphogypsum, 2kg dispersion agent, 4kg bamboo alkali lignin.
Described dispersion agent is in mass ratio: paraffin, citrate, Poly Propylene Wax, polyethylene wax=1:1:1:2.
Its preparation method is: phosphogypsum being carried out intensification, to sinter to phosphogypsum surface temperature be after 185 DEG C, being 75-80 μm, being cooled to normal temperature through being ground to particle diameter, obtains beta-type semi-hydrated gypsum; Add processing aid and dispersion agent and mix 5min under rotating speed is 700r/min, then to be placed in temperature be at 87 DEG C after thermostatic curing 60min, then pulverize, obtain powdery phosphogypsum filler.
Described intensification sintering first at temperature is 100 DEG C, burns 20min, is then that 8 DEG C/min heats up with speed.
Embodiment 4
A kind of powdery phosphogypsum filler, raw material comprises: 145kg phosphogypsum, 3kg dispersion agent, 4.5kg leaf wood quality.
Described dispersion agent is in mass ratio: paraffin, citrate, stearate, Poly Propylene Wax, polyethylene wax=1:1:2:1:3.
Its preparation method is: phosphogypsum being carried out intensification, to sinter to phosphogypsum surface temperature be after 190 DEG C, being 65-68 μm, being cooled to normal temperature through being ground to particle diameter, obtains beta-type semi-hydrated gypsum; Add processing aid and dispersion agent and mix 5min under rotating speed is 800r/min, then to be placed in temperature be at 65 DEG C after thermostatic curing 30min, then pulverize, obtain powdery phosphogypsum filler.
Described intensification sintering first at temperature is 100 DEG C, burns 20min, is then that 6 DEG C/min heats up with speed.
Embodiment 5
A kind of powdery phosphogypsum filler, raw material comprises: 105kg phosphogypsum, 3kg dispersion agent, 7kg Gramineae xylogen.
Described dispersion agent is sodium stearate.
Its preparation method is: phosphogypsum being carried out intensification, to sinter to phosphogypsum surface temperature be after 180 DEG C, being 75 μm, being cooled to normal temperature through being ground to particle diameter, obtains beta-type semi-hydrated gypsum; Add processing aid and dispersion agent and mix 8min under rotating speed is 730r/min, then to be placed in temperature be at 60 DEG C after thermostatic curing 45min, then pulverize, obtain powdery phosphogypsum filler.
Described intensification sintering first at temperature is 100 DEG C, burns 20min, is then that 7.5 DEG C/min heats up with speed.
Claims (7)
1. a powdery phosphogypsum filler, is characterized in that, raw material comprises by weight ratio: 100-150 part phosphogypsum, 2-4 part dispersion agent, 3-7 part processing aid.
2. powdery phosphogypsum filler as claimed in claim 1, it is characterized in that, described dispersion agent is one or more mixtures in paraffin, citrate, stearate, Poly Propylene Wax, polyethylene wax.
3. powdery phosphogypsum filler as claimed in claim 1, it is characterized in that, described processing aid is xylogen.
4. the preparation method of powdery phosphogypsum filler as claimed in claim 1, it is characterized in that, method is: phosphogypsum being carried out intensification, to sinter to phosphogypsum surface temperature be after 180-190 DEG C, is 60-80 μm through being ground to particle diameter, be cooled to normal temperature, obtain beta-type semi-hydrated gypsum; Add processing aid and dispersion agent and carry out high-speed mixing 5-8min, after thermostatic curing 30-60min, then pulverize, obtain powdery phosphogypsum filler.
5. the preparation method of powdery phosphogypsum filler as claimed in claim 4, is characterized in that, described intensification sintering first at temperature is 100 DEG C, burns 20min, is then that 5-8 DEG C/min heats up with speed.
6. the preparation method of powdery phosphogypsum filler as claimed in claim 4, it is characterized in that, described high-speed mixing, its rotating speed is 700-800r/min.
7. the preparation method of powdery phosphogypsum filler as claimed in claim 4, it is characterized in that, described thermostatic curing, its temperature is 60-90 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510845933.5A CN105331009B (en) | 2015-11-29 | 2015-11-29 | A kind of powdery ardealite filler and its preparation |
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| CN201510845933.5A CN105331009B (en) | 2015-11-29 | 2015-11-29 | A kind of powdery ardealite filler and its preparation |
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| CN105331009A true CN105331009A (en) | 2016-02-17 |
| CN105331009B CN105331009B (en) | 2017-09-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948548A (en) * | 2016-05-13 | 2016-09-21 | 贵州开磷磷石膏综合利用有限公司 | Preparation method of ultrafine active beta gypsum micro-powder material |
| CN107540985A (en) * | 2017-08-22 | 2018-01-05 | 贵州开磷磷石膏综合利用有限公司 | A kind of manufacture method with stockpiling ardealite production PVC fillers |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2482087C1 (en) * | 2012-02-09 | 2013-05-20 | Юлия Алексеевна Щепочкина | Mixture for making heat-insulation boards |
| CN103435937A (en) * | 2013-08-28 | 2013-12-11 | 贵州开磷遵义碱厂 | Method for using phosphogypsum as polyvinyl chloride resin filler |
| CN104211313A (en) * | 2014-07-02 | 2014-12-17 | 三峡大学 | Phosphogypsum-based gelling material and its application in mine tailing filling |
| CN104261716A (en) * | 2014-09-19 | 2015-01-07 | 山东宏艺科技股份有限公司 | Ardealite-based cement retarder and preparation method thereof |
-
2015
- 2015-11-29 CN CN201510845933.5A patent/CN105331009B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2482087C1 (en) * | 2012-02-09 | 2013-05-20 | Юлия Алексеевна Щепочкина | Mixture for making heat-insulation boards |
| CN103435937A (en) * | 2013-08-28 | 2013-12-11 | 贵州开磷遵义碱厂 | Method for using phosphogypsum as polyvinyl chloride resin filler |
| CN104211313A (en) * | 2014-07-02 | 2014-12-17 | 三峡大学 | Phosphogypsum-based gelling material and its application in mine tailing filling |
| CN104261716A (en) * | 2014-09-19 | 2015-01-07 | 山东宏艺科技股份有限公司 | Ardealite-based cement retarder and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948548A (en) * | 2016-05-13 | 2016-09-21 | 贵州开磷磷石膏综合利用有限公司 | Preparation method of ultrafine active beta gypsum micro-powder material |
| CN105948548B (en) * | 2016-05-13 | 2018-06-19 | 贵州开磷磷石膏综合利用有限公司 | A kind of preparation method of superfine active β Gypsum Fibrosum micropowder materials |
| CN107540985A (en) * | 2017-08-22 | 2018-01-05 | 贵州开磷磷石膏综合利用有限公司 | A kind of manufacture method with stockpiling ardealite production PVC fillers |
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| CN105331009B (en) | 2017-09-15 |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170809 Address after: Xifeng County in Guizhou Province, Guiyang city town 551109 Applicant after: GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION Co.,Ltd. Address before: No. 237 Jinyang City Kailin Lake District Road 550002 Guizhou city of Guiyang Province Applicant before: GUIZHOU KAILIN GROUP Co.,Ltd. |
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Granted publication date: 20170915 Termination date: 20211129 |