CN105019304A - Neodymium-iron-boron antirust paper and preparation method thereof - Google Patents
Neodymium-iron-boron antirust paper and preparation method thereof Download PDFInfo
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- CN105019304A CN105019304A CN201510396819.9A CN201510396819A CN105019304A CN 105019304 A CN105019304 A CN 105019304A CN 201510396819 A CN201510396819 A CN 201510396819A CN 105019304 A CN105019304 A CN 105019304A
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Abstract
The invention discloses a neodymium-iron-boron antirust paper and a preparation method thereof. According to the invention, by using combined synergistic effect of benzotriazole, additives and the like, neodymium-iron-boron metal surface can be prevented from rusting; and ammonium benzoate can form an ammonia adhesive layer on the neodymium-iron-boron metal surface, so the contact of neodymium-iron-boron metals and air is blocked, and antirust effect can be exerted on the neodymium-iron-boron metals under double actions. Meanwhile, the prepared neodymium-iron-boron antirust paper in the invention can be used at the temperature of minus 10 to 65 DEG C and in relative humidity of lower than 95%, and has antirust effect capable of maintaining for 3 to 6 months, so compared with a conventional antirust method, antirust time is greatly prolonged. The invention is suitable for rust prevention of the neodymium-iron-boron metals.
Description
Technical field
The invention belongs to antirust field, relate to a kind of anti-tarnish paper and preparation method thereof, particularly relate to a kind of neodymium iron boron anti-tarnish paper and preparation method thereof.
Background technology
Nd-Fe-B permanent magnet is National 863 engineering project project hitech materials.What it can produce is a kind of biological magnetic field of simulating human magnetic field's feature, the Fe-Mn magnetism material of stable performance.Neodymium-iron-boron magnetic material is by neodymium, and the alloy of the composition such as iron oxide, also known as magnet steel.Neodymium iron boron has high magnetic energy product and coercivity, the advantage of neodymium iron boron is that cost performance is high, the mechanical property that tool is good, magnetic separator, motor generator, these three aspects of stereo set, wherein generator and motor are most widely used after being, comprise electric automobile, wind-driven generator, elevator, the fields such as crane are used more and more.Weak point is that Curie point is low, temperature characterisitic is poor, containing a large amount of neodymiums and iron in material, and is easy to efflorescence, perishable, oxidizable corrosion, and surface treatment method must be taked to make it to be improved by its chemical composition of adjustment, just can reach the requirement of practical application.
In prior art; for neodymium iron boron height magnetizable metal for preventing oxidation corrosion; first alramenting, Passivation Treatment can be carried out under normal circumstances on surface; object its be allow metal surface formed protective oxide layer; elementary protected effect is created to neodymium iron boron; but because this protective layer is not close airtight; when storage condition humiture is high or the storage time extends; the moisture in space still can infiltrate its protective layer gap; same meeting produces corrosion oxidation for neodymium iron boron, and the protection period of this kind of method is generally 1-2 month.And burning corrosion system is the electrochemical reaction produced by moisture, neodymium iron boron metal is through too high magnetization treatment, the potentiometric response on surface is more strong, though so use conventional anti-tarnish paper not produce oxidation corrosion, the medicament residue phenomenon of rust inhibitor can be formed in neodymium iron boron metal surface because of its overreaction.
In prior art, common rustproof packaging material can not play antirust oxidation resistant effect to the storage of neodymium iron boron height magnetizable metal, conventional rustproof packaging material is nothing more than rust-preventing film and anti-tarnish paper, but because neodymium iron boron metal has high magnetization, use rust-preventing film because the flatness of plastics, the danger of operation can be caused.The antioxidant routine of adding in existing anti-tarnish paper uses natrium nitrosum, benzoic acid, phosphoric acid cyclohexylamine, di(2-ethylhexyl)phosphate cyclohexylamine, sad cyclohexylamine etc.; although each material all has its distinctive anti-oxidation characteristics; usually combinationally using of multiple antioxidant can be carried out when reality uses; its reaction of producing each other also can produce different chemical reaction along with various combination, and the use of the corresponding rust inhibitor of various metal material is also with regard to its crucial main points place.
Therefore, a kind of can the rustproof packaging material of long-acting storage neodymium iron boron height magnetizable metal having great importance is studied.
Summary of the invention
The technical problem to be solved in the present invention, be to provide a kind of neodymium iron boron anti-tarnish paper and preparation method thereof, can not only carry out antirust to neodymium iron boron metal surface, an antirust coat can also be formed on its surface, block the contact of neodymium iron boron metal and air, under double action, more can play rust inhibition to neodymium iron boron metal, antirust time can reach 3-6 month.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of neodymium iron boron anti-tarnish paper, prepare the raw material that its neodymium iron boron rust inhibitor used comprises following parts by weight:
Capric acid 12 ~ 18 parts, cyclohexylamine 10 ~ 15 parts, methyl alcohol 25 ~ 35 parts,
BTA 3 ~ 5 parts, ammonium benzoate 30 ~ 36 parts, Sodium Benzoate 24 ~ 27 parts
Limit as one of the present invention, the ratio of weight and number of described capric acid and cyclohexylamine is 1.2:1.The ratio of weight and number of capric acid and cyclohexylamine is 1.2:1, can form best weakly alkaline environment pH value is 7.0 ~ 8.0 solution, both ratios of weight and number do high or low change, all directly can cause the change of the pH value of solution, and finally affect the antirust function of rust inhibitor.
Present invention also offers the method preparing above-mentioned neodymium iron boron anti-tarnish paper, it carries out according to following steps order:
(1) capric acid is mixed with ring amine, be prepared into solution a, stand-by;
(2) using methyl alcohol as solvent, solution a is formulated as the solution b that concentration is 35%;
(3) add BTA by solution b, be configured to the solution c that concentration is 40%, stand-by;
(4) ammonium benzoate is added in the deionized water of 60 DEG C, dissolve and be formulated as the solution d that concentration is 25%;
(5) add Sodium Benzoate by solution d, dissolve and be formulated as the solution e that concentration is 45%;
(6) solution e being heated with stirring to temperature is 55 DEG C, and solution c is added in solution e in batches, to completely compatible, and obtained neodymium iron boron rust inhibitor;
(7) neodymium iron boron rust inhibitor is coated on neutrality, tightness is on the body paper of 0.8 ~ 0.85, unit coating weight is 15g/m
2, after toast, until paper moisture content≤8%, final obtained neodymium iron boron anti-tarnish paper.
Limit as one of the present invention, in described step (6), the ratio of weight and number of solution c and solution e is 1.2:1.
Wherein, solution c can have volatile rust prevention effect to non-ferrous metal and ferrous metal, can absorbing moisture be replaced into rust-preventing characteristic.And the effect of solution e can make final obtained anti-tarnish paper surface to keep dry environment, the impact of the moisture in air can not be subject to, give full play to the effect of volatile rust prevention.
Limit as another kind of the present invention, the addition that in described step (6), solution c is in batches each is 10% of total amount.
Again limit as of the present invention, the baking temperature in described step (7) is 160 ~ 190 DEG C, and baking time is 3min.
Owing to have employed above-mentioned technical scheme, compared with prior art, acquired technological progress is in the present invention:
Adopt composition of raw materials provided by the present invention can not only carry out antirust to neodymium iron boron metal surface, an antirust coat can also be formed on its surface, block the contact of neodymium iron boron metal and air, under double action, more can play rust inhibition to neodymium iron boron metal, antirust time can reach 3-6 month.What wherein play rust inhibition for metal surface is that BTA and other auxiliary agent etc. have been worked in coordination with jointly, and ammonium benzoate is originally as a kind of material hard to tolerate, usually do not use in rust inhibitor of the prior art, the present invention is used the deionized water of 60 DEG C to be dissolved, final obtained anti-tarnish paper in use can form ammonia adhesion layer on the top layer of anti-tarnish paper, intercepted extraneous oxygen and moisture contacting neodymium iron boron metal, dual has ensured the antirust of neodymium iron boron metal.And obtained product resistance toly can be-10 ~ 65 DEG C in temperature to be used below 95% with relative humidity, and rust inhibition can maintain 3-6 month, and more existing rust-proofing method, antirust time extends greatly.
The present invention is applicable to the antirust of neodymium iron boron metal.
The present invention is described in further detail below in conjunction with specific embodiment.
Detailed description of the invention
Embodiment 1 one kinds of neodymium iron boron anti-tarnish papers and preparation method thereof
A kind of neodymium iron boron anti-tarnish paper, prepares the raw material that its neodymium iron boron rust inhibitor used comprises following parts by weight: capric acid 12g, cyclohexylamine 10g, methyl alcohol 25g, BTA 3g, ammonium benzoate 30g, Sodium Benzoate 24g.
Wherein, the ratio of weight and number of described capric acid and cyclohexylamine is 1.2:1.
The method of above-mentioned neodymium iron boron anti-tarnish paper, it carries out according to following steps order:
(1) capric acid is mixed with ring amine, be prepared into solution a, stand-by;
(2) using methyl alcohol as solvent, solution a is formulated as the solution b that concentration is 35%;
(3) add BTA by solution b, be configured to the solution c that concentration is 40%, stand-by;
(4) ammonium benzoate is added in the deionized water of 60 DEG C, dissolve and be formulated as the solution d that concentration is 25%;
(5) add Sodium Benzoate by solution d, dissolve and be formulated as the solution e that concentration is 45%;
(6) solution e being heated with stirring to temperature is 55 DEG C, and solution c is added in solution e in batches, and each addition is 10% of total amount, to completely compatible, and obtained neodymium iron boron rust inhibitor; Wherein, the ratio of weight and number of solution c and solution e is 1.2:1.
(7) neodymium iron boron rust inhibitor is coated on neutrality, tightness is on the body paper of 0.8, unit coating weight is 15g/m
2, rear employing hot-air flow toasts, and baking temperature is 160 ~ 190 DEG C, baking time be 3min until paper moisture content≤8%, final obtained neodymium iron boron anti-tarnish paper.
Obtained product resistance toly can be-10 ~ 65 DEG C in temperature and use below 95% with relative humidity, and rust inhibition can maintain 3-6 month.
Embodiment 2-6 neodymium iron boron anti-tarnish paper and preparation method thereof
Embodiment 2-6 is respectively a kind of neodymium iron boron anti-tarnish paper and preparation method thereof, similar to the raw material of embodiment 1 and preparation method, and difference is only that the technical parameter in consumption is wherein different, shown in table specific as follows:
Product obtained in embodiment 2-6 can resistance toly use below 95% at-10 ~ 65 DEG C and relative humidity, and rust inhibition can maintain 3-6 month.
The experiment of the high temperature resistant and high humidity of product obtained in embodiment 7 embodiment 1-6
Because neodymium iron boron magnetic body is oxidized to current potential oxidation corrosion, be the current potential stream that the iron ion of metal surface produces by the moisture in air, combine with oxygen and cause corrosion oxidation reaction.
Product obtained in embodiment 1-6 is adopted to carry out high humility, high/low temperature thermal shock test experiments, anti-tarnish paper obtained in ferromagnetic for neodymium boron surface embodiment 1-6 is packed, after to be placed on temperature be 50 DEG C, humidity is 8h under the test environment of 95%, after be cooled to 0 DEG C, humidity is 4h under the test environment of 95%, this process 12h is one-period, within one day, be circulate in two cycles, altogether circulate 15 days, after test.Opened by the rust prevention packaging paper of neodymium-iron-boron surface, neodymium-iron-boron surface does not find corrosion oxidation and bad phenomenon.
Afterwards product obtained in embodiment 1-6 is carried out to the antirust practical operation of 180 days (namely 6 months), neodymium iron boron magnetic body is carried out coated, there is provided 1000 anti-tarnish papers to carry out batch testing, and under identical environment, carry out contrast test with existing anti-tarnish paper, result is as shown in the table:
| Time | Anti-tarnish paper prepared by the present invention | The anti-tarnish paper used in prior art |
| 14 days | Non-corroding oxidative phenomena | There is doubtful oxidative phenomena |
| 90 days | Non-corroding oxidative phenomena | There is rust staining |
| 180 days | Non-corroding oxidative phenomena | Rust staining is obvious, and area is larger |
As can be seen from the above table, the anti-tarnish paper used in prior art, the phenomenon of doubtful oxidation is just there is afterwards 14 days (namely 2 weeks), rust staining is there is after (namely 3 months) at 90 days, occurred obvious rust staining 180 days (namely 6 months), and rust staining area is larger.And adopting the anti-tarnish paper prepared by the present invention to carry out coated neodymium iron boron magnetic body until 180 days (and 6 months) still non-corroding oxidative phenomena, the rust-proof effect that the anti-tarnish paper of this explanation prepared by the present invention is directed to neodymium iron boron magnetic body is obviously better than prior art.
The above is only preferred embodiment of the present invention, is not restriction the present invention being made to other form, and any those skilled in the art may utilize above-mentioned technology contents to be changed or be modified as the Equivalent embodiments of equivalent variations as enlightenment.But everyly do not depart from technical solution of the present invention content, according to technical spirit of the present invention to the simple modification done by above embodiment, equivalent variations and remodeling, still belong to the protection domain of the claims in the present invention.
Claims (6)
1. a neodymium iron boron anti-tarnish paper, is characterized in that preparing the raw material that its neodymium iron boron rust inhibitor used comprises following parts by weight:
Capric acid 12 ~ 18 parts, cyclohexylamine 10 ~ 15 parts, methyl alcohol 25 ~ 35 parts,
BTA 3 ~ 5 parts, ammonium benzoate 30 ~ 36 parts, Sodium Benzoate 24 ~ 27 parts.
2. neodymium iron boron anti-tarnish paper according to claim 1, is characterized in that: the ratio of weight and number of described capric acid and cyclohexylamine is 1.2:1.
3. prepare a method for neodymium iron boron anti-tarnish paper as claimed in claim 1, it is characterized in that it carries out according to following steps order:
(1) capric acid is mixed with ring amine, be prepared into solution a, stand-by;
(2) using methyl alcohol as solvent, solution a is formulated as the solution b that concentration is 35%;
(3) add BTA by solution b, be configured to the solution c that concentration is 40%, stand-by;
(4) ammonium benzoate is added in the deionized water of 60 DEG C, dissolve and be formulated as the solution d that concentration is 25%;
(5) add Sodium Benzoate by solution d, dissolve and be formulated as the solution e that concentration is 45%;
(6) solution e being heated with stirring to temperature is 55 DEG C, and solution c is added in solution e in batches, to completely compatible, and obtained neodymium iron boron rust inhibitor;
(7) neodymium iron boron rust inhibitor is coated on neutrality, tightness is on the body paper of 0.8 ~ 0.85, unit coating weight is 15g/m
2, after toast, until paper moisture content≤8%, final obtained neodymium iron boron anti-tarnish paper.
4. the method preparing neodymium iron boron anti-tarnish paper according to claim 3, is characterized in that: in described step (6), the ratio of weight and number of solution c and solution e is 1.2:1.
5. the method preparing neodymium iron boron anti-tarnish paper according to claim 3, is characterized in that: the addition that in described step (6), solution c is in batches each is 10% of total amount.
6. the method preparing neodymium iron boron anti-tarnish paper according to claim 3, is characterized in that: the baking temperature in described step (7) is 160 ~ 190 DEG C, and baking time is 3min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510396819.9A CN105019304B (en) | 2015-07-08 | 2015-07-08 | Neodymium-iron-boron antirust paper and preparation method thereof |
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| CN201510396819.9A CN105019304B (en) | 2015-07-08 | 2015-07-08 | Neodymium-iron-boron antirust paper and preparation method thereof |
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| CN105019304A true CN105019304A (en) | 2015-11-04 |
| CN105019304B CN105019304B (en) | 2017-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780009A (en) * | 2016-01-26 | 2016-07-20 | 上海三汰包装材料有限公司 | Volatile rust prevention card and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101300389A (en) * | 2005-10-31 | 2008-11-05 | 国际纸业公司 | An anticorrosive paper or paperboard material |
| CN103160031A (en) * | 2011-12-15 | 2013-06-19 | 沈阳防锈包装材料有限责任公司 | Rustproof rubber and manufacturing method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101300389A (en) * | 2005-10-31 | 2008-11-05 | 国际纸业公司 | An anticorrosive paper or paperboard material |
| CN103160031A (en) * | 2011-12-15 | 2013-06-19 | 沈阳防锈包装材料有限责任公司 | Rustproof rubber and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
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| 吴荫顺等: "《电化学保护和缓蚀剂应用技术》", 31 March 2006, 化学工业出版社工业装备与信息工程出版中心 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780009A (en) * | 2016-01-26 | 2016-07-20 | 上海三汰包装材料有限公司 | Volatile rust prevention card and preparation method thereof |
| CN105780009B (en) * | 2016-01-26 | 2018-06-19 | 上海三汰包装材料有限公司 | A kind of preparation method of volatile rust prevention card |
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| CN105019304B (en) | 2017-03-22 |
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