CN102798579A - Analysis method of resin grinding tool formula - Google Patents
Analysis method of resin grinding tool formula Download PDFInfo
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- CN102798579A CN102798579A CN201210305230XA CN201210305230A CN102798579A CN 102798579 A CN102798579 A CN 102798579A CN 201210305230X A CN201210305230X A CN 201210305230XA CN 201210305230 A CN201210305230 A CN 201210305230A CN 102798579 A CN102798579 A CN 102798579A
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Abstract
The invention discloses an analysis method of a resin grinding tool formula, comprising the following steps: S1, pre-treatment; S2, resin measurement: measuring the content of resin at an appropriate temperature by a gas combustion method; S3, metal filler measurement: dissolving a resin grinding tool sample at low temperature by using hydrochloric acid and hydrogen peroxide, steaming the dissolved sample by sulfuric acid and damaging carbide by nitric acid to separate the metal filler, metal, resin and acid insoluble substance; S4, measurement of acid insoluble substance in the resin grinding tool: fusing the resin grinding tool sample in a box resistance furnace by adding an alkali oxidant through using a nickel crucible, so as to measure the content of the grinding material and the acid insoluble substance in the resin grinding tool. The resin grinding tool formula can be simply, easily, quickly and accurately analyzed by using the analysis method.
Description
Technical field
The present invention relates to the grinding tool field, especially relate to a kind of analytical approach of resin abrasive tools prescription.
Background technology
Since the reform and opening-up, the particularly nearest more than ten years, the whole grinding materials and grinding tool industry of China has obtained tremendous development, can deserve to be called and advance by leaps and bounds, and the output of each major product is all at the forefront in the world.The resin abrasive tools technical development is rapid, has obtained gratifying achievement, and superhard resin abrasive tools, extraordinary resin abrasive tools have also reached new technical merit.In order to guarantee the steady quality of resin abrasive tools, need analyze the prescription of various resin abrasive tools, but in analytic process, have following technical barrier:
1, when dissolving resin grinding tool sample, resin and metal-doped at separates very difficulty; Because sample is after acid is dissolved, resin flies in the solution, makes to analyze the test solution muddiness, and is very glutinous again, and when driving away with filtration method, it adsorbs a part of metallic element again easily, and it is on the low side to make other metallic element measure the result;
Molten appearance overlong time when 2, abrasive material detects;
3, resin content is being measured, be difficult to guaranty money's hard rock crystalline form and be not destroyed.
Summary of the invention
To problem set forth above, the object of the invention is to provide a kind of simple method that can quick and precisely analyze the resin grinding tool formula.
The present invention realizes that through following technical measures a kind of analytical approach of resin abrasive tools prescription may further comprise the steps:
S1, pre-treatment; Extract clean, dry and free from oil resin abrasive tools sample, and it is for use that it is pulverized, grinds back mistake 200 mesh sieves;
The mensuration of S2, resin;
Accurately take by weighing a certain amount of sample of handling through step S1, place the porcelain crucible of the known weight of calcination to constant weight under 700 ° of C-800 ° of C, place again in the high temperature furnace and rise from low temperature; Calcination is 1 hour under 700 ° of C-800 ° of C, and taking-up is weighed after placing and being cooled to room temperature in the exsiccator, and calcination was taken out in 30 minutes again; Cooling is weighed, and repeats above operation; Until constant weight, calculate by following formula then:
Amount of resin=(G1-G2)/G*100%+r,
G in the formula-title appearance weight,
It is heavy that the preceding sample of G1-calcination adds crucible,
Sample adds crucible heavily after G2-calcination,
Added elemental metals filler will generate oxide, the weight that promptly in the calcination process, increases in r-diamond resin wheel under this temperature;
The mensuration of S3, metal packing;
Accurately take by weighing a certain amount of sample of handling through step S1, place the 150ml conical flask, the dissolving with hydrochloric acid sample that adds 20ml (1:4) pipettes the 1ml hydrogen peroxide with transfer pipet again; Heating slightly produces until no minute bubbles, add the sulfuric acid (perchloric acid of 5ml? Cannot) (1:1); Be heated to emit the sulfuric acid cigarette after, drip red fuming nitric acid (RFNA) again and destroy resin, disappear for extremely until black particle; Drive the pure qi (oxygen) body, take off and be cooled to room temperature, the hydrochloric acid and the hydrogen peroxide heating for dissolving that add 20ml (1:4) then are extremely limpid; Take off cooling, will filtrate after the filtration to move in the measuring bottle is diluted to groove with hydrochloric acid, and this filtrating being used for is analyzed tenor;
The mensuration of acid non-soluble substance in S4, the resin abrasive tools;
Accurately take by weighing a certain amount of sample of handling through step S1, the nickel crucible that tiles adds basic solvent 1.000g, fusion in the high temperature furnace of 800 ° of C, and frit is used the 1:1 hcl acidifying, and heated solution is to clarification; And heating is concentrated into 20ml, takes off coldly slightly, and to add concentration down be 1% animal glue 10ml constantly stirring, and leaves standstill for a moment, filters with quantitative filter paper; Sediment is placed porcelain crucible and burns to constant weight at high temperature furnace, be used to measure the content of siliceous conventional abrasive material composition; Filtrating is used for analyzing alkali fusion property material.
Concrete, the r in step S2 formula, added elemental metals such as nickel, iron, tin generate oxide in the diamond resin wheel, and promptly weight increases in the calcination process, and their weightening finish coefficient is respectively: nickel is 0.21, and iron is 1.382, tin is 0.20; The coefficient that specific algorithm multiply by them to their result of laboratory test is the weight r of their increase.
As a kind of optimal way, the alkaline oxidiser described in the step S4 is NaOH or NaCO
3
Concrete, the step of in step S4, measuring the content of siliceous conventional abrasive material composition is:
S41, accurately take by weighing a certain amount of sample of handling through step S1, the nickel crucible that tiles adds basic solvent 1.000g, fusion in the high temperature furnace of 800 ° of C, and frit is used the 1:1 hcl acidifying, and heated solution is extremely clarified; And heating is concentrated into 20ml, takes off coldly slightly, and to add concentration down be 1% animal glue 10ml constantly stirring, and leaves standstill for a moment, filters with quantitative filter paper; Sediment and filter paper are put in the empty crucible of having weighed; Middle low temperature 200-300 ° of C ashing in high temperature furnace treats that ashing finishes, and high temperature furnace is warming up to 900 ° of C, and insulation was taken out and placed drying basin to be cooled to room temperature in 10 minutes under this temperature; Weighing, calculate by following formula then:
SiO
2％=M
1-M
2/G*100％
In the formula: G-representes to take by weighing samples weighed
M
1The amount of-expression calcination postprecipitation and crucible
M
2-expression crucible bare weight
The amount of conventional abrasive material silit is: SiO
2%*0.666.
Concrete, the step of in step S4, analyzing alkali fusion property material in the filtrating is: gained filtrating places the 250ml volumetric flask, is diluted to scale, shakes up;
The analysis that alkali dissolves the thing alundum (Al in S42, the filtrating: get filtrating 25ml after the dilution in the 250ml conical flask, add 0.02MEDTA standard solution 20ml, transfer to pH2.3-3.0 with the ammoniacal liquor of 1:1; Heated and boiled was taken off in 1 minute, and cooling adds 30% hexamethylenetetramine solution 10ml; PH5 buffer solution 10ml, 2 of xylenol orange indicator use 0.02M zinc sulfate standard solution titration to solution to become the orange red terminal point that is by yellow immediately; Add potassium fluoride 1g; Solution continued heated and boiled 1 minute by the orange red yellow that transfers to again, and flowing water dashes and is chilled to room temperature; Continue to use that 0.0200M zinc sulfate standard solution titration is extremely orange red is terminal point, be calculated as follows the content of alundum (Al in the sample:
Al
2O
3=V*M
Zinc sulfate* 0.051/ (G*25/250) * 100%
In the formula: V=adds the mL number of the zinc sulfate standard solution of potassium fluoride post consumption
The G=samples weighed;
The analysis that alkali dissolves the thing chrome green in S43, the filtrating: the filtrating 50ml after the absorption dilution adds the sulfuric acid 10ml of 1:1, the phosphatase 11 0ml of 1:1 in the 250ml conical flask; N-phenylanthranilic acid 0.1% is as 2 of indicator; Use the iron ammonium sulfate standard solution titration of 0.05N immediately, become bright green to solution by cherry-red and be terminal point, rate of titration wants slow when closing on terminal point; In order to avoid excessive, be calculated as follows the content of chrome green in the sample:
Cr
2O
3＝V*N*0.02533/(G*50/250)*100％
In the formula: the V-titration consumes the milliliter number of iron ammonium sulfate standard solution
The N of N-iron ammonium sulfate standard solution
G-claims a kind weight.
Adopt hydrochloric acid to add hydrogen peroxide in the analytical procedure of the present invention, dissolution in low temperature resin abrasive tools sample steams cigarette with sulfuric acid again; Destroy carbonide with nitric acid and reach metal packing; The separation of metal, resin, acid non-soluble substance has improved precision of analysis, prepares burden when being convenient to manufacture a product; Distinguish the difference of various resin wheel prescriptions;
The present invention has adopted nickel crucible to add basic solvent (NaOH or NaCO3) in chamber type electric resistance furnace, to carry out molten resin grinding tool sample determination abrasive material content; And acid non-soluble substance content in the resin wheel; Shortened the used time of analyzing, reduced loss, do not re-used expensive platinum crucible, reduced cost electric energy;
Because method of the present invention has shortened analysis time, has improved analysis efficiency, can in time analyze the problem that occurs in the process that manufactures a product, and searches reason, improve production technology, improve the quality of product.
Embodiment
Below in conjunction with embodiment the present invention is done further explain.
S1, pre-treatment;
(1), sampling (the resin abrasive tools sample must be clean, and drying does not have oil),
(2), pulverize, grind, sieve: be broken into fritter to sample with hammer or other instrument; Again with steel mortar be crushed to diameter less than 2mm after;, continue extremely all to sieve through 200 order samples with the steel mortar porphyrize to 5-10g with the inquartation division, the sample bag of packing into then numbering is for use.
The mensuration of S2, resin;
(1), method principle
Resin belongs to macromolecular compound; It has high temperature and is prone to decomposability; When suitable 700 ° of C-800 ° of C calcinations of broken resin wheel adamas crystalline form and amount, it is broken down into CO2 gas and overflows, thus the weight of losing; With and obtain its amount, be not destroyed at such one the adamantine pattern of suitable temperature simultaneously and be convenient to analyze particle diameter and crystalline form;
(2), instrument
1. box high temperature furnace, 2. analytical balance;
(3), analytical procedure
Utilize analytical balance accurately to take by weighing G gram through the sample that step S1 handled, the porcelain crucible G1 that places in the known weight of 700 ° of C-800 ° of C calcination to constant weights restrains, and places box high temperature furnace interior from low-temperature heat again; 700 ° of C-800 ° of C calcinations 1 hour, taking-up was weighed the G2 gram once after placing and being cooled to room temperature in the exsiccator, and calcination was taken out in 30 minutes again; Cooling is weighed, and repeats above operation; After constant weight is the G2 gram, calculate by following formula then:
Amount of resin=(G1-G2)/G*100%+r
G in the formula-title appearance weight
It is heavy that the preceding sample of G1-calcination adds crucible
Sample adds crucible heavily after G2-calcination
Added elemental metals filler will generate oxide in r-diamond resin wheel under this temperature, and promptly weight increases in the calcination process.
Remarks: the r in the formula; Added elemental metals such as nickel, iron, tin etc. can generate oxide in the diamond resin wheel under 700 ° of C-800 ° of C temperature; Promptly in the calcination process, produce the amount of weightening finish, test has accurately also all been done in their this laboratory of weightening finish coefficient, and nickel is 0.21; Iron is 1.382, and tin is 0.20 etc.The coefficient that specific algorithm multiply by them to their result of laboratory test is their gain in weight.
The mensuration of S3, metal packing;
When measuring metal packing, the separation method of metal, resin, acid non-soluble substance
(1) analytical approach principle
Resin steams at concentrated sulfuric acid solution under the condition of cigarette, and the ability carbonization becomes the carbonide of black, drips red fuming nitric acid (RFNA) and becomes the effusion of NO2 gas, thereby reach the separation order, makes sample solution limpid bright.
(2) instrument and reagent
1. 2. 3. red fuming nitric acid (RFNA) 4. analytical balances, 5. hydrogen peroxide (oxygenant) 6.1% animal glue 7.0.02M zinc sulfate 8.PH5 buffer solution 9. ammoniacal liquor (1:1) 10.30% hexamethylenetetramine solution 11. xylenol orange indicator 1%.12.EDTA-0.02M13 phosphoric acid (1:1) of sulfuric acid (1:1) of hydrochloric acid (1:1)
(3) operation steps
Accurately take by weighing a certain amount of sample of handling through step S1, place the 150ml conical flask, the dissolving with hydrochloric acid sample that adds 20ml (1:4) pipettes the 1ml hydrogen peroxide with transfer pipet again and adds, heating slightly; Produce until no minute bubbles, the sulfuric acid (cannot substitute) that adds 5ml (1:1), be heated to emit the sulfuric acid cigarette after, drip red fuming nitric acid (RFNA) again and destroy resin; Disappear for extremely until black particle, drive the pure qi (oxygen) body, take off and be cooled to room temperature; The hydrochloric acid and hydrogen peroxide (chemical name or the trade name that add 20ml (1:4) then?) heating for dissolving is to limpid, takes off cooling, with the sand stamen funnel suction filtration of known weight; The oven dry of sand stamen funnel, weigh, sediment is the insolubles of acid again; Possibly be the adamas that the diamond resin wheel adds, corundum, abrasive materials such as silit.
To filtrate to move in the measuring bottle is diluted to groove with hydrochloric acid, shakes up, and this filtrating being used for is analyzed metal content analysis can be with reference to metal analysis chemistry regulation on any other chemical analysis book.(root a tree name laboratory instrument condition, available titrimetry or AAS etc.)
The mensuration of acid non-soluble substance in S4, the resin abrasive tools;
(1) analytical approach principle
The material that general acid can not be dissolved is silicates or aluminium oxide, chrome green etc., and these materials can carry out acidifying and become solution, and then can measure their accurate content through chemical method through basic solvent ability fusion under certain high temperature again.
(2) instrument and reagent
1. box high temperature furnace 2. analytical balances 3. alkaline oxidisers 4. nickel crucibles
(3) operation steps:
The analytical approach of S41, conventional abrasive material silit: accurately take by weighing a certain amount of sample of handling through step S1, the nickel crucible that tiles adds basic solvent 1g, fusion in the high temperature furnace of 800 ° of C, and frit is used the 1:1 hcl acidifying, and heated solution is to clarification; And heating is concentrated into 20ml, takes off coldly slightly, and to add concentration down be 1% animal glue 10ml constantly stirring, and leaves standstill for a moment, filters with quantitative filter paper; Filtrating is filtered in the 250ml volumetric flask and is diluted to scale with water, shakes up.(this filtrating being used for is analyzed alkali-soluble substance) put the empty crucible of having weighed with sediment and filter paper; Middle low temperature 200-300 ° of C ashing in high temperature furnace treats that ashing finishes; High temperature furnace is warming up to 900 ° of C, and insulation was taken out and is placed drying basin to be cooled to room temperature, weighing in 10 minutes under this temperature.
SiO
2％=M
1-M
2/G*100％
In the formula: G-representes to take by weighing samples weighed
M
1The amount of-expression calcination postprecipitation and crucible
M
2-expression crucible bare weight
The amount of conventional abrasive material silit is: SiO
2%*0.666
The analysis that alkali dissolves the thing alundum (Al in S42, the filtrating: get filtrating 25ml in the 250ml conical flask, add 0.02MEDTA () standard solution 20ml, (1:1) transfers to PH2.3-3.0 with ammoniacal liquor; Heated and boiled was taken off in 1 minute, and cooling adds 30% hexamethylenetetramine solution 10ml; PH5 buffer solution 10ml, 2 of xylenol orange indicator use 0.02M zinc sulfate standard solution titration to solution to become orange red be terminal point (its zinc sulfate consumption is disregarded) by yellow immediately; Add potassium fluoride 1g; Solution continued heated and boiled 1 minute by the orange red yellow that transfers to again, and flowing water dashes and is chilled to room temperature; Continue to use that 0.0200M zinc sulfate standard solution titration is extremely orange red is terminal point, be calculated as follows the content of alundum (Al in the sample:
Al
2O
3=V*M
Zinc sulfate* 0.051/ (G*25/250) * 100%
V=adds the mL number of the zinc sulfate standard solution of potassium fluoride post consumption in the formula.
The G=samples weighed
The analysis that alkali dissolves the thing chrome green in S43, the filtrating: draw filtrating 50ml in the 250ml conical flask; Add sulfuric acid (1:1) 10m; 2 of phosphoric acid (1:1) 10ml indicator (N-phenylanthranilic acid 0.1%); Use iron ammonium sulfate standard solution (0.05N) titration immediately, become bright green to solution by cherry-red and be terminal point.Rate of titration wants slow when closing on terminal point, in order to avoid excessive.Be calculated as follows the content of chrome green in the sample:
Cr
2O
3=V*N*0.02533/(G*50/250)*100％
In the formula: the V-titration consumes the milliliter number of iron ammonium sulfate standard solution.
The N of N-iron ammonium sulfate standard solution
G-claims a kind weight.
More than be that the analytical approach of resin abrasive tools prescription of the present invention is set forth; Be used for helping to understand the present invention; But embodiment of the present invention is not restricted to the described embodiments; Any change that does not deviate under the principle of the invention to be done, modification, substitute, combination, simplify, all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. the analytical approach of resin abrasive tools prescription is characterized in that may further comprise the steps:
S1, pre-treatment; Extract clean, dry and free from oil resin abrasive tools sample, and it is for use that it is pulverized, grinds back mistake 200 mesh sieves;
The mensuration of S2, resin;
Accurately take by weighing a certain amount of sample of handling through step S1, place the porcelain crucible of the known weight of calcination to constant weight under 700 ° of C-800 ° of C, place again in the high temperature furnace and rise from low temperature; Calcination is 1 hour under 700 ° of C-800 ° of C, and taking-up is weighed after placing and being cooled to room temperature in the exsiccator, and calcination was taken out in 30 minutes again; Cooling is weighed, and repeats above operation; Until constant weight, calculate by following formula then:
Amount of resin=(G1-G2)/G*100%+r,
G in the formula-title appearance weight,
It is heavy that the preceding sample of G1-calcination adds crucible,
Sample adds crucible heavily after G2-calcination,
Added elemental metals filler will generate oxide, the weight that promptly in the calcination process, increases in r-diamond resin wheel under this temperature;
The mensuration of S3, metal packing;
Accurately take by weighing a certain amount of sample of handling through step S1, place the 150ml conical flask, the hydrochloric acid 20ml dissolved samples that adds 1:4 pipettes the 1ml hydrogen peroxide with transfer pipet again and adds, heating slightly; Produce until no minute bubbles, add the sulfuric acid 5ml of 1:1, be heated to emit the sulfuric acid cigarette after; Drip red fuming nitric acid (RFNA) again and destroy resin, disappear for extremely, drive the pure qi (oxygen) body until black particle; Take off and be cooled to room temperature, the hydrochloric acid 20ml and the hydrogen peroxide heating for dissolving that add 1:4 then are extremely limpid, take off cooling; To filtrate after the filtration to move in the measuring bottle is diluted to groove with hydrochloric acid, shakes up, and this filtrating being used for is analyzed tenor;
The mensuration of acid non-soluble substance in S4, the resin abrasive tools;
Accurately take by weighing a certain amount of sample of handling through step S1, the nickel crucible that tiles adds basic solvent 1.000g, fusion in the high temperature furnace of 800 ° of C, and frit is with the hcl acidifying of 1:1, and heated solution is to clarification; And heating is concentrated into 20ml, takes off coldly slightly, and to add concentration down be 1% animal glue 10ml constantly stirring, and leaves standstill for a moment, filters with quantitative filter paper; Sediment is placed porcelain crucible and burns to constant weight at high temperature furnace, be used to measure the content of siliceous conventional abrasive material composition; Filtrating is used for analyzing alkali fusion property material.
2. the analytical approach of resin abrasive tools prescription according to claim 1; It is characterized in that: the r in step S2 formula; Added elemental metals such as nickel, iron, tin generate oxide in the diamond resin wheel, and promptly weight increases in the calcination process, and their weightening finish coefficient is respectively: nickel is 0.21; Iron is 1.382, and tin is 0.20; Specific algorithm is the weight r that is the coefficient that their result of laboratory test multiply by them their increase.
3. the analytical approach of resin abrasive tools prescription according to claim 1, it is characterized in that: the alkaline oxidiser described in the step S4 is NaOH or NaCO
3
4. the analytical approach of resin abrasive tools prescription according to claim 1 is characterized in that: the step of in step S4, measuring the content of siliceous conventional abrasive material composition is:
S41, accurately take by weighing a certain amount of sample of handling through step S1, the nickel crucible that tiles adds basic solvent 1.000g, fusion in the high temperature furnace of 800 ° of C, and frit is used the 1:1 hcl acidifying, and heated solution is extremely clarified; And heating is concentrated into 20ml, takes off coldly slightly, and to add concentration down be 1% animal glue 10ml constantly stirring, and leaves standstill for a moment, filters with quantitative filter paper; Sediment and filter paper are put in the empty crucible of having weighed; Middle low temperature 200-300 ° of C ashing in high temperature furnace treats that ashing finishes, and high temperature furnace is warming up to 900 ° of C, and insulation was taken out and placed drying basin to be cooled to room temperature in 10 minutes under this temperature; Weighing, calculate by following formula then:
SiO
2％=M
1-M
2/G*100％
In the formula: G-representes to take by weighing samples weighed
M
1The amount of-expression calcination postprecipitation and crucible
M
2-expression crucible bare weight
The amount of conventional abrasive material silit is: SiO
2%*0.666.
5. the analytical approach of resin abrasive tools prescription according to claim 1 is characterized in that: the step of in step S4, analyzing alkali fusion property material in the filtrating is: gained filtrating places the 250ml volumetric flask, is diluted to scale, shakes up;
The analysis that alkali dissolves the thing alundum (Al in S42, the filtrating: get filtrating 25ml after the dilution in the 250ml conical flask, add 0.02MEDTA standard solution 20ml, transfer to pH2.3-3.0 with the ammoniacal liquor of 1:1; Heated and boiled was taken off in 1 minute, and cooling adds 30% hexamethylenetetramine solution 10ml; PH5 buffer solution 10ml, 2 of xylenol orange indicator use 0.02M zinc sulfate standard solution titration to solution to become the orange red terminal point that is by yellow immediately; Add potassium fluoride 1g; Solution continued heated and boiled 1 minute by the orange red yellow that transfers to again, and flowing water dashes and is chilled to room temperature; Continue to use that 0.0200M zinc sulfate standard solution titration is extremely orange red is terminal point, be calculated as follows the content of alundum (Al in the sample:
Al
2O
3=V*M
Zinc sulfate* 0.051/ (G*25/250) * 100%
In the formula: V=adds the mL number of the zinc sulfate standard solution of potassium fluoride post consumption
The G=samples weighed;
The analysis that alkali dissolves the thing chrome green in S43, the filtrating: the filtrating 50ml after the absorption dilution adds the sulfuric acid 10ml of 1:1, the phosphatase 11 0ml of 1:1 in the 250ml conical flask; N-phenylanthranilic acid 0.1% is as 2 of indicator; Use the iron ammonium sulfate standard solution titration of 0.05N immediately, become bright green to solution by cherry-red and be terminal point, rate of titration wants slow when closing on terminal point; In order to avoid excessive, be calculated as follows the content of chrome green in the sample:
Cr
2O
3＝V*N*0.02533/(G*50/250)*100％
In the formula: the V-titration consumes the milliliter number of iron ammonium sulfate standard solution
The N of N-iron ammonium sulfate standard solution
G-claims a kind weight.
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|---|---|---|---|
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449742A (en) * | 2016-05-31 | 2017-12-08 | 株式会社岛津制作所 | Online heavy metal monitor and the detection method using the online heavy metal monitor |
| CN112326715A (en) * | 2020-11-06 | 2021-02-05 | 安徽舜达化学锚固科技有限公司 | Method for judging influence of chemical components of stone powder on thermal stability of resin anchoring agent |
-
2012
- 2012-08-24 CN CN201210305230XA patent/CN102798579A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449742A (en) * | 2016-05-31 | 2017-12-08 | 株式会社岛津制作所 | Online heavy metal monitor and the detection method using the online heavy metal monitor |
| CN112326715A (en) * | 2020-11-06 | 2021-02-05 | 安徽舜达化学锚固科技有限公司 | Method for judging influence of chemical components of stone powder on thermal stability of resin anchoring agent |
| CN112326715B (en) * | 2020-11-06 | 2024-03-29 | 安徽舜达化学锚固科技有限公司 | Method for judging influence of stone powder chemical components on thermal stability of resin anchoring agent |
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Inventor after: Liu Peizhang Inventor after: Li Fenglan Inventor after: Liu Zhiqin Inventor after: Xia Jizhou Inventor after: Chang Erxia Inventor before: Liu Peizhang Inventor before: Li Fenglan Inventor before: Liu Zhiqin Inventor before: Xia Jizhou |
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Free format text: CORRECT: INVENTOR; FROM: LIU PEIZHANG LI FENGLAN LIU ZHIQIN XIA JIZHOU TO: LIU PEIZHANG LI FENGLAN LIU ZHIQIN XIA JIZHOU CHANG ERXIA |
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Application publication date: 20121128 |