CN105885300A - Novel environment-friendly PVC (polyvinyl chloride) heat stabilizer - Google Patents
Novel environment-friendly PVC (polyvinyl chloride) heat stabilizer Download PDFInfo
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- CN105885300A CN105885300A CN201610468565.1A CN201610468565A CN105885300A CN 105885300 A CN105885300 A CN 105885300A CN 201610468565 A CN201610468565 A CN 201610468565A CN 105885300 A CN105885300 A CN 105885300A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a novel environment-friendly PVC (polyvinyl chloride) heat stabilizer, and belongs to the field of deep-processing technologies for bentonite. The novel environment-friendly PVC heat stabilizer is prepared via steps of ingredient pulping, acid activation reaction, pressure filtration, alkalinization, alkaline argil particle surface modification, drying, smashing and the like. The novel environment-friendly PVC heat stabilizer has the advantages that the Ca(OH)2 content of the novel environment-friendly PVC heat stabilizer is 42-44wt%, the activity index of the novel environment-friendly PVC heat stabilizer is 96%-99%, and the heat stabilization time of the novel environment-friendly PVC heat stabilizer is 152-158 min; the novel environment-friendly PVC heat stabilizer is of a load type, the form of the novel environment-friendly PVC heat stabilizer keeps unchanged after hydrogen chloride is adsorbed, and PVC can be prevented from being contaminated by released salt or organic pollutants; the novel environment-friendly PVC heat stabilizer is non-toxic, odor-less and safe and is environmentally friendly.
Description
Technical field
The invention belongs to bentonite deep process technology field, be specifically related to a kind of novel environment protection PVC heat stabilizer.
Background technology
Bentonite is referred to as natural nano-material, general-purpose clay.China's bentonite is best in quality, and ore reserves occupies second place of the world, and in addition to exporting as bentonite raw material on a small quantity, remaining is all on sale throughout domestic with bentonite in powder and active hargil form, and these products belong to primary product, and economic benefit is the highest, and level of resource utilization is low.In order to obtain bigger economic benefit, need to develop the seriation new product of high-tech content, expansive approach frontier.
Patent Application Publication " preparation method (application number: 201510081886.1) of a kind of loaded calcium hydroxide activity carclazyte " discloses the preparation method of a kind of loaded calcium hydroxide activity carclazyte, described loaded calcium hydroxide activity carclazyte is prepared through dispensing slurrying, acid activation reaction, filter pressing for the first time, washing and the step such as second time filter pressing, alkalization, for the third time filter pressing, dry, pulverizing, the alkaline hargil that the method is produced, owing to there is the shortcomings such as whiteness is the highest, alkali capacity is low, quality is unstable, have impact on it and applies further.
PVC (polrvinyl chloride) is the thermoplastic polymer generated by chloroethylene polymerization reaction, due to its goods have that soft durometer easy-regulating, mechanical property be preferable, corrosion-resistant, electrical insulating property height good, transparent and the advantage such as inexpensive, have in the fields such as building, light industry, chemical industry, electronics, space flight, automobile, agricultural and have been widely used.But, PVC is susceptible to thermal degradation phenomenon in the course of processing, produces hydrogen chloride, and hydrogen chloride has catalysis accelerated degradation effect.It is thus typically necessary to interpolation heat stabilizer is to suppress thermal degradation, improve the performance of PVC product.
PVC heat stabilizer is generally alkalescence material, mainly there are lead salts, metal soap, organic species and their mixture, these heat stabilizers are in use, its active component directly contacts with PVC, the hcl reaction that stabilizer discharges with PVC decomposed after PVC thermoforming is processed, generating chloride salt, these salts can produce impact to the performance of PVC.Houghite PVC heat stabilizer is a kind of stratiform weak base material, although its interlayer has the ability of adsorbing chlorinated hydrogen, but its adsorption capacity is little, play mainly its crystal layer of active component, generate aluminum chloride and magnesium chloride after it and hcl reaction, conduction, the mechanical mechanics property of PVC is also produced impact.
The yield of China's PVC heat stabilizer is continuously increased at present, and lead heat stabilizer the most poisonous, with serious pollution does not the most reduce, and has certain increase on the contrary, and this is antipathetic to today of pay attention to day by day environment with safety.Bentonite, calcium hydroxide are all nontoxic, tasteless, make alkalescence hargil have good Safety and Environmental Protection basis as heat stabilizer.Calcium hydroxide in alkalescence hargil has extremely strong adsorbing chlorinated Hydrogen Energy power, and bentonite itself also has material filler function, and the product after adsorbing chlorinated hydrogen is stayed in montmorillonite, thus is expected to become the heat stabilizer of a kind of function admirable.Guangxi has abundant bentonite resource, and wherein the bentonite ore of Ningming County is maximum, and proved reserves are 6.1 hundred million tons, accounts for the 1/4 of whole nation reserves, and the bentonite ore smectite content of Tiandong County is more than 80%.Therefore, developing PVC heat stabilizer, affluent resources local to exploitation, development local economy has great importance.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of novel environment protection PVC heat stabilizer, to solve the problems such as prior art neutral and alkali hargil alkali capacity is low, quality is unstable, lipophile is poor.Novel environment protection PVC heat stabilizer prepared by the present invention is nontoxic, tasteless, safety and environmental protection, and quality is high.
For solve above technical problem, the present invention by the following technical solutions:
A kind of novel environment protection PVC heat stabilizer, its preparation method comprises the following steps:
S1: bentonite and the active hargil waste water that concentration is 10%-16% are mixed by weight for 1.6-2.2:10-14, stirs under rotating speed is 200-500r/min, prepare pasty material A；
S2: the pasty material A that step S1 prepares is joined in the inorganic mixed acid that concentration is 11%-20%, described inorganic mixed acid is the mixed acid of the phosphoric acid 3-6:2-4:2-3 by volume composition of the hydrochloric acid of concentration 25-30wt%, the oxalic acid of concentration 28-32wt%, concentration 18-20wt%, pasty material A is 1-3.2:4-16 with the weight ratio of inorganic mixed acid, sodium sulfide stirring is added under rotating speed is 200-550r/min, sodium sulfide is 1-2:50-150 with the weight ratio of pasty material A, it is heated to 82-93 DEG C, react 1.2-3.2h at being maintained at 82-93 DEG C, prepare pasty material B；
S3: the pasty material B that step S2 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake A of 32%-45%；
S4: the filter cake A prepared to step S3 adds water stirring and dissolving, amount of water is 6-7.5 times of filter cake A weight, stirring and dissolving filter cake A adds flocculant stirring 0.4-1.2h the most afterwards makes solution precipitate, and precipitate carries out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake B of 32%-45%；
S5: add water stirring and dissolving by the filter cake B that step S4 prepares, and amount of water is 5-6.5 times of filter cake B weight, after stirring and dissolving filter cake A is complete, adds aqua calcis, prepares slurry material C；
S6: the slurry material C that step S5 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake C of 32%-45%；
S7: be placed in centrifuge by the filter cake C that step S6 prepares, removes water under centrifugal rotational speed is 4000-6000r/min and pulverizes after filter cake C moisture content≤5%, and gained ground product sieves A, prepares loaded calcium hydroxide activity carclazyte.
S8: the alkaline hargil that step S7 prepares is made into the solution that concentration is 4%-12%, adds the poly-propyl acrylate of alkalescence hargil quality 12%-30%, stirring reaction 75-120min under rotating speed 200-400r/min, prepares slurry material D；
S9: the slurry material D that step S8 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake D of 32%-45%；
S10: be placed in centrifuge by the filter cake D that step S9 prepares, removes water under centrifugal rotational speed is 4000-6000r/min and pulverizes after filter cake D moisture content≤5%, and gained ground product sieves B, prepares novel environment protection PVC heat stabilizer.
Further, the one during flocculant described in step S4 includes organic flocculant and inorganic flocculating agent.
Further, the one during described organic flocculant includes sodium polyacrylate, calcium polyacrylate (CPA), acrylamide.
Further, the one during described inorganic flocculating agent includes bodied ferric sulfate, polyaluminium sulfate.
Further, aqua calcis concentration described in step S5 is 8%-12%.
Further, the mesh number sieving A described in step S7 is 300-600 mesh.
Further, the mesh number sieving B described in step S10 is 200-500 mesh.
The method have the advantages that
(1) present invention adds the Fe that acid corrosion equipment can be produced by reducing agent3+It is reduced to the Fe of light color2+, it is to avoid Fe3+The whiteness of the Color influences active hargil brought；
(2) the alkaline hargil production efficiency of the present invention is high, energy consumption and low cost；
(3) novel environment protection PVC heat stabilizer Ca (OH) that the present invention produces2Content is 42-44wt%, and activity index is 96%-99%, and heat-stable time is 152-158min, illustrates that the novel environment protection PVC heat stabilizer quality that present invention process produces is high and stable；
(4) present invention uses centrifuging to remove water, and efficiency is high so that whole production technology cycle time；
(5) the recyclable recycling of gained spent acid of the present invention, effectively reduces acid and processes the cost of sewage, beneficially energy-saving and emission-reduction；
(6) present invention is changed into lipophilic the surface characteristic of alkalescence hargil granule from hydrophilic, and novel environment protection PVC heat stabilizer can be made more preferable with the PVC compatibility；
(7) the novel environment protection PVC heat stabilizer that the present invention produces is support type, and after adsorbing chlorinated hydrogen, the form of heat stabilizer keeps constant, will not discharge salt or Organic Pollution PVC；
(8) the novel environment protection PVC heat stabilizer that the present invention produces is nontoxic, tasteless, safety and environmental protection；
(9) raw material sources are easy to get, and preparation is easily.
Detailed description of the invention
For ease of being more fully understood that the present invention, being illustrated by following example, these embodiments belong to protection scope of the present invention, but are not intended to protection scope of the present invention.
A kind of novel environment protection PVC heat stabilizer, its preparation method comprises the following steps:
S1: bentonite and the active hargil waste water that concentration is 10%-16% are mixed by weight for 1.6-2.2:10-14, stirs under rotating speed is 200-500r/min, prepare pasty material A；
S2: the pasty material A that step S1 prepares is joined in the inorganic mixed acid that concentration is 11%-20%, described inorganic mixed acid is the mixed acid of the phosphoric acid 3-6:2-4:2-3 by volume composition of the hydrochloric acid of concentration 25-30wt%, the oxalic acid of concentration 28-32wt%, concentration 18-20wt%, pasty material A is 1-3.2:4-16 with the weight ratio of inorganic mixed acid, sodium sulfide stirring is added under rotating speed is 200-550r/min, sodium sulfide is 1-2:50-150 with the weight ratio of pasty material A, it is heated to 82-93 DEG C, react 1.2-3.2h at being maintained at 82-93 DEG C, prepare pasty material B；
S3: the pasty material B that step S2 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake A of 32%-45%；
S4: the filter cake A prepared to step S3 adds water stirring and dissolving, amount of water is 6-7.5 times of filter cake A weight, stirring and dissolving filter cake A adds flocculant stirring 0.4-1.2h the most afterwards makes solution precipitate, precipitate is carried out under pressure is 0.9-0.95MPa filter pressing, prepared moisture content is the filter cake B of 32%-45%, described flocculant includes the one in organic flocculant and inorganic flocculating agent, described organic flocculant includes that the one in sodium polyacrylate, calcium polyacrylate (CPA), acrylamide, described inorganic flocculating agent include the one in bodied ferric sulfate, polyaluminium sulfate；
S5: add water stirring and dissolving by the filter cake B that step S4 prepares, and amount of water is 5-6.5 times of filter cake B weight, after stirring and dissolving filter cake A is complete, adds aqua calcis, prepares slurry material C；
S6: the slurry material C that step S5 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake C of 32%-45%；
S7: be placed in centrifuge by the filter cake C that step S6 prepares, pulverizes after removing water to filter cake C moisture content≤5% under centrifugal rotational speed is 4000-6000r/min, and gained ground product crosses 300-600 mesh sieve, prepares loaded calcium hydroxide activity carclazyte.
S8: the alkaline hargil that step S7 prepares is made into the solution that concentration is 4%-12%, adds the poly-propyl acrylate of alkalescence hargil quality 12%-30%, stirring reaction 75-120min under rotating speed 200-400r/min, prepares slurry material D；
S9: the slurry material D that step S8 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake D of 32%-45%；
S10: be placed in centrifuge by the filter cake D that step S9 prepares, pulverizes after removing water to filter cake D moisture content≤5% under centrifugal rotational speed is 4000-6000r/min, and gained ground product crosses 200-500 mesh sieve, prepares novel environment protection PVC heat stabilizer.
Below by more specifically embodiment, the present invention will be described.
Embodiment 1
A kind of novel environment protection PVC heat stabilizer, its preparation method comprises the following steps:
S1: bentonite and the active hargil waste water that concentration is 12% are mixed by weight for 2:12, stirs under rotating speed is 400r/min, prepare pasty material A；
S2: the pasty material A that step S1 prepares is joined in the inorganic mixed acid that concentration is 15%, described inorganic mixed acid is the mixed acid of the phosphoric acid 4:3:3 by volume composition of the hydrochloric acid of concentration 28wt%, the oxalic acid of concentration 28wt%, concentration 18wt%, pasty material A is 2:10 with the weight ratio of inorganic mixed acid, sodium sulfide stirring is added under rotating speed is 400r/min, sodium sulfide is 2:120 with the weight ratio of pasty material A, it is heated to 85 DEG C, is maintained at 85 DEG C reaction 2.5h, prepares pasty material B；
S3: the pasty material B that step S2 prepares is carried out under pressure is 0.92MPa filter pressing, and prepared moisture content is the filter cake A of 40%；
S4: the filter cake A prepared to step S3 adds water stirring and dissolving, amount of water is 7 times of filter cake A weight, stirring and dissolving filter cake A adds sodium polyacrylate stirring 0.9h the most afterwards makes solution precipitate, and precipitate carries out under pressure is 0.92MPa filter pressing, and prepared moisture content is the filter cake B of 38%；
S5: add water stirring and dissolving by the filter cake B that step S4 prepares, and amount of water is 6 times of filter cake B weight, after stirring and dissolving filter cake A is complete, adding concentration is the aqua calcis of 10%, prepares slurry material C；
S6: the slurry material C that step S5 prepares is carried out under pressure is 0.92MPa filter pressing, and prepared moisture content is the filter cake C of 39%；
S7: be placed in centrifuge by the filter cake C that step S6 prepares, removing water to filter cake C moisture content under centrifugal rotational speed is 5000r/min is pulverizing after 4%, and gained ground product is crossed 500 mesh sieves, prepared loaded calcium hydroxide activity carclazyte.
S8: the alkaline hargil that step S7 prepares is made into the solution that concentration is 8%, adds the poly-propyl acrylate of alkalescence hargil quality 20%, stirring reaction 100min under rotating speed 300r/min, prepares slurry material D；
S9: the slurry material D that step S8 prepares is carried out under pressure is 0.92MPa filter pressing, and prepared moisture content is the filter cake D of 40%；
S10: be placed in centrifuge by the filter cake D that step S9 prepares, removing water to filter cake D moisture content under centrifugal rotational speed is 5000r/min is pulverizing after 3%, and gained ground product is crossed 400 mesh sieves, prepared novel environment protection PVC heat stabilizer.
Embodiment 2
A kind of novel environment protection PVC heat stabilizer, its preparation method comprises the following steps:
S1: bentonite and the active hargil waste water that concentration is 16% are mixed by weight for 2.2:14, stirs under rotating speed is 500r/min, prepare pasty material A；
S2: the pasty material A that step S1 prepares is joined in the inorganic mixed acid that concentration is 20%, described inorganic mixed acid is the mixed acid of the phosphoric acid 6:4:3 by volume composition of the hydrochloric acid of concentration 30wt%, the oxalic acid of concentration 32wt%, concentration 20wt%, pasty material A is 3.2:16 with the weight ratio of inorganic mixed acid, sodium sulfide stirring is added under rotating speed is 550r/min, sodium sulfide is 2:150 with the weight ratio of pasty material A, it is heated to 93 DEG C, is maintained at 93 DEG C reaction 1.2h, prepares pasty material B；
S3: the pasty material B that step S2 prepares is carried out under pressure is 0.95MPa filter pressing, and prepared moisture content is the filter cake A of 45%；
S4: the filter cake A prepared to step S3 adds water stirring and dissolving, amount of water is 7.5 times of filter cake A weight, stirring and dissolving filter cake A adds bodied ferric sulfate stirring 1.2h the most afterwards makes solution precipitate, and precipitate carries out under pressure is 0.95MPa filter pressing, and prepared moisture content is the filter cake B of 45%；
S5: add water stirring and dissolving by the filter cake B that step S4 prepares, and amount of water is 6.5 times of filter cake B weight, after stirring and dissolving filter cake A is complete, adding concentration is the aqua calcis of 12%, prepares slurry material C；
S6: the slurry material C that step S5 prepares is carried out under pressure is 0.95MPa filter pressing, and prepared moisture content is the filter cake C of 45%；
S7: be placed in centrifuge by the filter cake C that step S6 prepares, removing water to filter cake C moisture content under centrifugal rotational speed is 6000r/min is pulverizing after 5%, and gained ground product is crossed 600 mesh sieves, prepared loaded calcium hydroxide activity carclazyte.
S8: the alkaline hargil that step S7 prepares is made into the solution that concentration is 12%, adds the poly-propyl acrylate of alkalescence hargil quality 30%, stirring reaction 75min under rotating speed 400r/min, prepares slurry material D；
S9: the slurry material D that step S8 prepares is carried out under pressure is 0.95MPa filter pressing, and prepared moisture content is the filter cake D of 45%；
S10: be placed in centrifuge by the filter cake D that step S9 prepares, removing water to filter cake D moisture content under centrifugal rotational speed is 6000r/min is pulverizing after 5%, and gained ground product is crossed 500 mesh sieves, prepared novel environment protection PVC heat stabilizer.
Embodiment 3
A kind of novel environment protection PVC heat stabilizer, its preparation method comprises the following steps:
S1: bentonite and the active hargil waste water that concentration is 10% are mixed by weight for 1.6:10, stirs under rotating speed is 200r/min, prepare pasty material A；
S2: the pasty material A that step S1 prepares is joined in the inorganic mixed acid that concentration is 11%, described inorganic mixed acid is the mixed acid of the phosphoric acid 5:4:3 by volume composition of the hydrochloric acid of concentration 25wt%, the oxalic acid of concentration 30wt%, concentration 20wt%, pasty material A is 1:4 with the weight ratio of inorganic mixed acid, sodium sulfide stirring is added under rotating speed is 200r/min, sodium sulfide is 1:50 with the weight ratio of pasty material A, it is heated to 82 DEG C, is maintained at 82 DEG C reaction 3.2h, prepares pasty material B；
S3: the pasty material B that step S2 prepares is carried out under pressure is 0.9MPa filter pressing, and prepared moisture content is the filter cake A of 32%；
S4: the filter cake A prepared to step S3 adds water stirring and dissolving, amount of water is 6 times of filter cake A weight, stirring and dissolving filter cake A adds acrylamide stirring 0.4h the most afterwards makes solution precipitate, and precipitate carries out under pressure is 0.9MPa filter pressing, and prepared moisture content is the filter cake B of 32%；
S5: add water stirring and dissolving by the filter cake B that step S4 prepares, and amount of water is 5 times of filter cake B weight, after stirring and dissolving filter cake A is complete, adding concentration is the aqua calcis of 8%, prepares slurry material C；
S6: the slurry material C that step S5 prepares is carried out under pressure is 0.9MPa filter pressing, and prepared moisture content is the filter cake C of 32%；
S7: be placed in centrifuge by the filter cake C that step S6 prepares, removing water to filter cake C moisture content under centrifugal rotational speed is 4000r/min is pulverizing after 4%, and gained ground product is crossed 300 mesh sieves, prepared loaded calcium hydroxide activity carclazyte.
S8: the alkaline hargil that step S7 prepares is made into the solution that concentration is 4%, adds the poly-propyl acrylate of alkalescence hargil quality 12%, stirring reaction 120min under rotating speed 200r/min, prepares slurry material D；
S9: the slurry material D that step S8 prepares is carried out under pressure is 0.9MPa filter pressing, and prepared moisture content is the filter cake D of 32%；
S10: be placed in centrifuge by the filter cake D that step S9 prepares, removing water to filter cake D moisture content under centrifugal rotational speed is 4000r/min is pulverizing after 4%, and gained ground product is crossed 200 mesh sieves, prepared novel environment protection PVC heat stabilizer.
The water content of novel environment protection PVC heat stabilizer granule, Ca (OH) in embodiment 1-32Content, activity index, heat-stable time analysis result see table.
| Embodiment | Product moisture content (%) | Ca(OH)2Content/wt% | Activity index/% | Heat-stable time/min(180 ± 1 DEG C) |
| 1 | 3 | 42 | 96 | 152 |
| 2 | 5 | 44 | 99 | 158 |
| 3 | 4 | 42 | 97 | 156 |
As seen from the above table, alkaline bleaching clay product moisture content≤5% prepared by the present invention, Ca (OH)2Content is 42-44wt%, and activity index is 96%-99%, and heat-stable time is 152-158min, it can be seen that, the novel environment protection PVC heat stabilizer quality that present invention process produces is high and stable.
Above content it cannot be assumed that the present invention be embodied as be confined to these explanations; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the scope of patent protection that the present invention is determined by the claims submitted to.
Claims (7)
1. a novel environment protection PVC heat stabilizer, it is characterised in that: the preparation method of described novel environment protection PVC heat stabilizer comprises the following steps:
S1: bentonite and the active hargil waste water that concentration is 10%-16% are mixed by weight for 1.6-2.2:10-14, stirs under rotating speed is 200-500r/min, prepare pasty material A；
S2: the pasty material A that step S1 prepares is joined in the inorganic mixed acid that concentration is 11%-20%, described inorganic mixed acid is the mixed acid of the phosphoric acid 3-6:2-4:2-3 by volume composition of the hydrochloric acid of concentration 25-30wt%, the oxalic acid of concentration 28-32wt%, concentration 18-20wt%, pasty material A is 1-3.2:4-16 with the weight ratio of inorganic mixed acid, sodium sulfide stirring is added under rotating speed is 200-550r/min, sodium sulfide is 1-2:50-150 with the weight ratio of pasty material A, it is heated to 82-93 DEG C, react 1.2-3.2h at being maintained at 82-93 DEG C, prepare pasty material B；
S3: the pasty material B that step S2 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake A of 32%-45%；
S4: the filter cake A prepared to step S3 adds water stirring and dissolving, amount of water is 6-7.5 times of filter cake A weight, stirring and dissolving filter cake A adds flocculant stirring 0.4-1.2h the most afterwards makes solution precipitate, and precipitate carries out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake B of 32%-45%；
S5: add water stirring and dissolving by the filter cake B that step S4 prepares, and amount of water is 5-6.5 times of filter cake B weight, after stirring and dissolving filter cake A is complete, adds aqua calcis, prepares slurry material C；
S6: the slurry material C that step S5 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake C of 32%-45%；
S7: be placed in centrifuge by the filter cake C that step S6 prepares, removes water under centrifugal rotational speed is 4000-6000r/min and pulverizes after filter cake C moisture content≤5%, and gained ground product sieves A, prepares loaded calcium hydroxide activity carclazyte；
S8: the alkaline hargil that step S7 prepares is made into the solution that concentration is 4%-12%, adds the poly-propyl acrylate of alkalescence hargil quality 12%-30%, stirring reaction 75-120min under rotating speed 200-400r/min, prepares slurry material D；
S9: the slurry material D that step S8 prepares is carried out under pressure is 0.9-0.95MPa filter pressing, and prepared moisture content is the filter cake D of 32%-45%；
S10: be placed in centrifuge by the filter cake D that step S9 prepares, removes water under centrifugal rotational speed is 4000-6000r/min and pulverizes after filter cake D moisture content≤5%, and gained ground product sieves B, prepares novel environment protection PVC heat stabilizer.
Novel environment protection PVC heat stabilizer the most according to claim 1, it is characterised in that flocculant described in step S4 includes the one in organic flocculant and inorganic flocculating agent.
Novel environment protection PVC heat stabilizer the most according to claim 3, it is characterised in that described organic flocculant includes the one in sodium polyacrylate, calcium polyacrylate (CPA), acrylamide.
Novel environment protection PVC heat stabilizer the most according to claim 3, it is characterised in that described inorganic flocculating agent includes the one in bodied ferric sulfate, polyaluminium sulfate.
Novel environment protection PVC heat stabilizer the most according to claim 1, it is characterised in that aqua calcis concentration described in step S5 is 8%-12%.
Novel environment protection PVC heat stabilizer the most according to claim 1, it is characterised in that the mesh number sieving A described in step S7 is 300-600 mesh.
Novel environment protection PVC heat stabilizer the most according to claim 1, it is characterised in that the mesh number sieving B described in step S10 is 200-500 mesh.
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Cited By (7)
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| CN106243938A (en) * | 2016-10-11 | 2016-12-21 | 张莘蔓 | A kind of high-performance ceramic coating |
| CN106398441A (en) * | 2016-10-11 | 2017-02-15 | 张莘蔓 | Novel high-performance ceramic coating |
| CN106398362A (en) * | 2016-10-11 | 2017-02-15 | 张莘蔓 | Ceramic coating |
| CN106398442A (en) * | 2016-10-11 | 2017-02-15 | 张莘蔓 | Environmentally-friendly coating for ceramics |
| CN106433377A (en) * | 2016-10-11 | 2017-02-22 | 张莘蔓 | Novel environmental-friendly ceramic paint |
| CN106634091A (en) * | 2016-10-11 | 2017-05-10 | 张莘蔓 | Novel ceramic paint |
| CN107488272A (en) * | 2017-07-28 | 2017-12-19 | 广西汇智生产力促进中心有限公司 | A kind of loaded calcium hydroxide activity carclazyte, preparation method and applications |
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| CN105565331A (en) * | 2015-12-21 | 2016-05-11 | 罗永城 | Preparation method of alkaline porcelain clay |
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| CN103965565A (en) * | 2013-12-05 | 2014-08-06 | 广西大学 | Supported PVC (polyvinyl chloride) heat stabilizer and preparation method thereof |
| CN105271277A (en) * | 2015-02-15 | 2016-01-27 | 广西隆安瑞丰工贸有限公司 | Preparation method for calcium hydrate loading activated clay |
| CN105540603A (en) * | 2015-12-21 | 2016-05-04 | 罗永城 | Method for preparing sodium-hydroxide-loaded active clay |
| CN105565331A (en) * | 2015-12-21 | 2016-05-11 | 罗永城 | Preparation method of alkaline porcelain clay |
| CN105565354A (en) * | 2015-12-21 | 2016-05-11 | 罗永城 | Preparation method of supported calcium hydroxide activated clay |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106243938A (en) * | 2016-10-11 | 2016-12-21 | 张莘蔓 | A kind of high-performance ceramic coating |
| CN106398441A (en) * | 2016-10-11 | 2017-02-15 | 张莘蔓 | Novel high-performance ceramic coating |
| CN106398362A (en) * | 2016-10-11 | 2017-02-15 | 张莘蔓 | Ceramic coating |
| CN106398442A (en) * | 2016-10-11 | 2017-02-15 | 张莘蔓 | Environmentally-friendly coating for ceramics |
| CN106433377A (en) * | 2016-10-11 | 2017-02-22 | 张莘蔓 | Novel environmental-friendly ceramic paint |
| CN106634091A (en) * | 2016-10-11 | 2017-05-10 | 张莘蔓 | Novel ceramic paint |
| CN107488272A (en) * | 2017-07-28 | 2017-12-19 | 广西汇智生产力促进中心有限公司 | A kind of loaded calcium hydroxide activity carclazyte, preparation method and applications |
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