JPH0569052B2 - - Google Patents
Info
- Publication number
- JPH0569052B2 JPH0569052B2 JP7749588A JP7749588A JPH0569052B2 JP H0569052 B2 JPH0569052 B2 JP H0569052B2 JP 7749588 A JP7749588 A JP 7749588A JP 7749588 A JP7749588 A JP 7749588A JP H0569052 B2 JPH0569052 B2 JP H0569052B2
- Authority
- JP
- Japan
- Prior art keywords
- metastable phase
- heat treatment
- ray diffraction
- equiaxed
- water glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 235000019353 potassium silicate Nutrition 0.000 claims description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 7
- DHAHRLDIUIPTCJ-UHFFFAOYSA-K aluminium metaphosphate Chemical compound [Al+3].[O-]P(=O)=O.[O-]P(=O)=O.[O-]P(=O)=O DHAHRLDIUIPTCJ-UHFFFAOYSA-K 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 23
- 238000002441 X-ray diffraction Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 11
- 239000013078 crystal Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000000395 magnesium oxide Substances 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 7
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000011276 addition treatment Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- VLCLHFYFMCKBRP-UHFFFAOYSA-N tricalcium;diborate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-] VLCLHFYFMCKBRP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は水ガラスの建築業界における建材の
不燃化あるいは難燃化、化学装置や暖熱装置に用
いられる水ガラス基材はパテの硬化剤、耐火耐熱
塗料、鉱物性の絶縁物質、含浸物質及び被覆物質
用の結合剤として利用されている。[Detailed Description of the Invention] [Industrial Application Field] This invention applies to making water glass nonflammable or flame retardant as a building material in the construction industry, and for making water glass base materials used in chemical equipment and heating equipment as a putty hardening agent. It is used as a binder for fire-resistant and heat-resistant paints, mineral insulation materials, impregnating materials, and coating materials.
［従来の技術］
水ガラスは安価な無機接着剤であるが、硬化に
時間が掛かり、耐水性が良好でないことの理由
で、単味の使用には自ずから限度がある。上記の
欠点を改良するために種々の硬化剤の添加が行な
われており、不燃性無機硬化剤として古くから、
ケイ弗化ナトリウムが知られている。また縮合リ
ン酸アルミニウム（特公昭44−8977号）ホウ酸カ
ルシウム（特公昭49−10813号）第一リン酸の金
属塩を基材とするケイ弗化物（特公昭49−16253
号）等が硬化剤として用いられている。[Prior Art] Although water glass is an inexpensive inorganic adhesive, its use as a single adhesive is naturally limited because it takes time to cure and its water resistance is poor. In order to improve the above-mentioned drawbacks, various hardening agents have been added.
Sodium silicofluoride is known. Also, condensed aluminum phosphate (Japanese Patent Publication No. 44-8977), calcium borate (Japanese Patent Publication No. 49-10813), and silicon fluoride based on metal salts of primary phosphoric acid (Japanese Patent Publication No. 49-16253)
No.) etc. are used as hardening agents.
［発明が解決しようとする課題］
しかし上記従来の技術のうち、最も効果的な硬
化剤は、縮合リン酸アルミニウム（特公昭44−
8977号）であるが、そのＸ線回折図を第１図に示
す。横軸は走査角度2θを示し、単位はである。縦
軸はＸ線回折強度を表わす。図中１は等軸晶系
Al（PO3）3の回折ピークを、２は準安定相Al
（PO3）3の回折ピークを示す。対陰極はCuである。
この物質は等軸晶系Al（PO3）3と準安定相Al
（PO3）3との混合物であり、特公昭44−8977号に
記されたように、「第１段階で恒量になるまで最
高400℃に、第２段階で再び恒量となるまで最高
750℃に加熱する」事を特徴としているが、第１
段階の熱処理温度を変化した場合の生成物のＸ線
回折図を第２図に示す。第２図は水酸化アルミニ
ウムとリン酸のみで合成した縮合リン酸アルミニ
ウムの加熱処理温度の相違によるＸ線回折図であ
る。横軸は走査角度2θを示し、単位は°である。
縦軸はＸ線回折強度を表わす。図中は250℃、
は350℃、は400℃、は550℃加熱処理物を
表わし、１は等軸晶系Al（PO3）3の回折ピークを、
２は準安定相Al（PO3）3の回折ピークを示す。対
陰極はCuである。加熱処理温度400℃以上の場合
は等軸晶系Al（PO3）3のみとなり、準安定相Al
（PO3）3は消滅する。又加熱処理温度が250℃で
は、準安定相Al（PO3）3は合成できない。等軸晶
系Al（PO3）3と準安定相Al（PO3）3との硬化作用の
比較のために、次ぎの実験を行なつた。マイカ粉
300重量部、Al（PO3）375重量部、水ガラス300重
量部、水60重量部を混合して、その泥しようを型
に流し（厚さ10mmの円柱状）、放置し硬化作用を
観察した。Al（PO3）3としては、等軸晶系と準安
定相を用いた。準安定相を用いた物は24時間以内
に硬化したが、等軸晶系の物は１週間経過しても
硬化現象は認められなかつた。等軸晶系メタリン
酸アルミニウムAl（PO3）3は硬化作用が全くなく、
準安定相メタリン酸アルミニウムAl（PO3）3が硬
化作用をもつことが分かつた。従つて加熱処理効
果により等軸晶系Al（PO3）3の生成を極力押さえ、
準安定相Al2（PO3）3の合成率を大にすることを目
的としている。[Problems to be Solved by the Invention] However, among the above-mentioned conventional techniques, the most effective curing agent is condensed aluminum phosphate (Japanese Patent Publication No. 44-
8977), whose X-ray diffraction pattern is shown in FIG. The horizontal axis indicates the scanning angle 2θ, and the unit is . The vertical axis represents the X-ray diffraction intensity. 1 in the figure is equiaxed crystal system
2 is the diffraction peak of Al(PO3)3 , and 2 is the metastable phase Al.
Shows the diffraction peak of (PO 3 ) 3 . The anticathode is Cu.
This material consists of equiaxed crystal system Al( PO3 ) 3 and metastable phase Al
It is a mixture with (PO 3 ) 3 , and as stated in Japanese Patent Publication No. 44-8977, it is heated to a maximum temperature of 400℃ in the first stage until it reaches a constant weight, and in the second stage it is heated at a maximum temperature of 400℃ until it reaches a constant weight again.
It is characterized by "heating to 750℃", but the first
FIG. 2 shows the X-ray diffraction patterns of the product when the heat treatment temperature of the steps was varied. FIG. 2 is an X-ray diffraction diagram of condensed aluminum phosphate synthesized using only aluminum hydroxide and phosphoric acid at different heat treatment temperatures. The horizontal axis indicates the scanning angle 2θ, and the unit is °.
The vertical axis represents the X-ray diffraction intensity. In the figure, 250℃;
350℃, 400℃, 550℃ heat treatment, 1 is the diffraction peak of equiaxed Al(PO 3 ) 3 ,
2 shows the diffraction peak of the metastable phase Al(PO 3 ) 3 . The anticathode is Cu. When the heat treatment temperature is 400℃ or higher, only equiaxed Al( PO3 ) 3 is formed, and metastable Al
(PO 3 ) 3 disappears. Furthermore, when the heat treatment temperature is 250°C, metastable phase Al(PO 3 ) 3 cannot be synthesized. The following experiment was conducted to compare the hardening effects of equiaxed Al(PO 3 ) 3 and metastable Al(PO 3 ) 3 . mica powder
Mix 300 parts by weight, 75 parts by weight of Al(PO 3 ) 3 , 300 parts by weight of water glass, and 60 parts by weight of water, pour the slurry into a mold (cylindrical shape with a thickness of 10 mm), and leave it to harden. Observed. As Al(PO 3 ) 3 , equiaxed crystal system and metastable phase were used. The product using the metastable phase was cured within 24 hours, but the product using the equiaxed crystal system did not show any hardening phenomenon even after one week had passed. Equiaxed aluminum metaphosphate Al( PO3 ) 3 has no hardening effect,
It was found that the metastable phase aluminum metaphosphate Al(PO 3 ) 3 has a hardening effect. Therefore, the formation of equiaxed Al(PO 3 ) 3 is suppressed as much as possible by the heat treatment effect,
The purpose is to increase the synthesis rate of the metastable phase Al 2 (PO 3 ) 3 .
［問題点を解決するための手段］
準安定相AL（PO3）3の合成率を大にするため
に、種々の添加物の影響を調べた。添加物として
は、CaO、ZnO、MgO、ZrO2、Y2O3等を用い
た。CaO、ZnO、ZrO2、Y2O3等の添加の場合は、
第２図と同様で、加熱処理温度400℃以上の場合
は等軸晶系Al（PO3）3のみで、準安定相Al（PO3）3
をうるためには、400℃以下で熱処理を行なう必
要がある。MgO添加の場合は第３図に示す。第
３図は酸化マグネシウム添加の場合の加熱処理温
度の相違によるＸ線回折図を示す。横軸は走査角
度2θを示し、単位は°である。縦軸はＸ線回折強
度を表わす。図中、は250℃、は400℃、は
550℃加熱処理を表わし、１は等軸晶系Al（PO3）3
の回折ピークを、２は準安定相Al（PO3）3の回折
ピークを示す。対陰極はCuである。図示のよう
に加熱処理温度550℃でも準安定相Al（PO3）3は安
定に存在する。多少の等軸晶系Al（PO3）3を伴つ
ている。準安定相と等軸晶系との量比を見るため
に、加熱処理温度とＸ線回折強度比B／C［準
安定相Al（PO3）3の面間隔5.48Åのピークの高さ
をB、等軸晶系Al（PO3）3の面間隔4.34Åのピー
クの高さをICとする］との関係を第４図に示す。
第４図は第３図と同じ組成物で、等軸晶系と準安
定相のＸ線回折強度比B／Cと加熱処理温度の
関係を示す図である。横軸は加熱処理温度（℃）
を、縦軸はB／Cを表わす。第４図に示したよ
うにB／Cは400℃最大であるが、400℃より少
し上昇すると急激に減少し、500℃で最低となり、
500℃以上ではまた増加するが、700℃が極大であ
る。しかし、400℃以上では準安定相の純度、収
率上の問題があるので、本発明においては除外す
る。従つて準安定相Al（PO3）3の合成率を大にす
るためには、加熱処理温度400℃以下に保つ必要
がある。工業的にはMgO添加、加熱処理温度は
絶対に400℃以下に保つことである。MgO以外の
添加物又は不純物の影響により準安定相Al
（PO3）3の合成率が左右されることがある。[Means for solving the problem] In order to increase the synthesis rate of the metastable phase AL(PO 3 ) 3 , the effects of various additives were investigated. CaO, ZnO, MgO, ZrO 2 , Y 2 O 3 and the like were used as additives. When adding CaO, ZnO, ZrO 2 , Y 2 O 3 , etc.,
As shown in Figure 2, when the heat treatment temperature is 400°C or higher, only the equiaxed crystal system Al(PO 3 ) 3 is formed, and the metastable phase Al(PO 3 ) 3 is formed.
In order to obtain this, it is necessary to perform heat treatment at a temperature below 400°C. The case of MgO addition is shown in Figure 3. FIG. 3 shows X-ray diffraction patterns depending on the heat treatment temperature when magnesium oxide is added. The horizontal axis indicates the scanning angle 2θ, and the unit is °. The vertical axis represents the X-ray diffraction intensity. In the figure, is 250℃, is 400℃, is
550℃ heat treatment, 1 indicates equiaxed Al(PO 3 ) 3
2 shows the diffraction peak of the metastable phase Al(PO 3 ) 3 . The anticathode is Cu. As shown in the figure, the metastable phase Al(PO 3 ) 3 exists stably even at a heat treatment temperature of 550°C. It is accompanied by some equiaxed Al(PO 3 ) 3 . In order to see the amount ratio of the metastable phase and the equiaxed crystal system, the heat treatment temperature and the X-ray diffraction intensity ratio B / C [the height of the peak at the interplanar spacing of 5.48 Å in the metastable phase Al(PO3)3 ] B , and the height of the peak of the equiaxed Al(PO 3 ) 3 at the interplanar spacing of 4.34 Å is I C ] is shown in FIG.
FIG. 4 shows the relationship between the X-ray diffraction intensity ratio B / C of the equiaxed crystal system and the metastable phase and the heat treatment temperature for the same composition as in FIG. 3. The horizontal axis is the heat treatment temperature (℃)
, and the vertical axis represents B / C . As shown in Figure 4, B / C is at its maximum at 400°C, but when it rises a little above 400°C, it rapidly decreases, and reaches its lowest at 500°C.
It increases again at temperatures above 500℃, but reaches a maximum at 700℃. However, temperatures above 400°C pose problems in the purity and yield of the metastable phase, and are therefore excluded in the present invention. Therefore, in order to increase the synthesis rate of the metastable phase Al(PO 3 ) 3 , it is necessary to maintain the heat treatment temperature at 400° C. or lower. Industrially, MgO addition and heat treatment temperatures must be kept below 400°C. Metastable Al due to the influence of additives or impurities other than MgO
The synthesis rate of (PO 3 ) 3 may be affected.
［作用］
上記のように、縮合リン酸アルミニウムには等
軸晶系Al（PO3）3と準安定相Al（PO3）3との両者が
存在し、硬化作用に有効なのは準安定相Al
（PO3）3であることが分かる。準安定相を合成す
るためには、MgOを添加した酸化アルミニウム
不可欠であり、しかも加熱処理温度は絶対に400
℃以下にすれば、純度99％以上の準安定相Al
（PO3）3を高収率でうることができる。[Function] As mentioned above, condensed aluminum phosphate has both the equiaxed crystal system Al(PO 3 ) 3 and the metastable phase Al(PO 3 ) 3 , and it is the metastable phase Al that is effective for the hardening effect.
It turns out that (PO 3 ) 3 . To synthesize the metastable phase, MgO-added aluminum oxide is essential, and the heat treatment temperature must be 400°C.
If the temperature is below ℃, a metastable phase Al with a purity of 99% or more is produced.
(PO 3 ) 3 can be obtained in high yield.
［実施例］
320ｇの水酸化アルミニウム（又は210ｇの酸化
アルミニウム）と18〜34ｇの酸化マグネシウムを
均一に混合した粉末を、1300ｇのリン酸（85％）
中に攪はんしながら加え、加熱溶解させた後、蒸
発、濃縮を行ない乾固させる。溶液の加熱温度
は、溶液が沸騰しない様に、徐々に温度を上げな
がら行なう。乾固物は110℃で十分に乾燥した後、
空気の流通をよくし、中まで反応させるため、粗
粉砕し、380℃で恒量になるまで約３時間加熱し、
放冷後細粉砕して硬化剤として用いる。この際に
得られた物質のＸ線回折図を第５図に示す。第５
図は本発明実施例の準安定相メタリン酸アルミニ
ウムAl（PO3）3のＸ線回折図である。横軸は走査
角度2θを示し、単位は°である。縦軸はＸ線回折
強度を表わす。図中２は準安定相Al（PO3）3の回
折ピークを示す。対陰極はCuである。図示のよ
うに準安定相Al（PO3）3のみで、等軸晶系Al
（PO3）3はほとんど認められない。[Example] A powder obtained by uniformly mixing 320 g of aluminum hydroxide (or 210 g of aluminum oxide) and 18 to 34 g of magnesium oxide was mixed with 1300 g of phosphoric acid (85%).
Add to the solution while stirring, heat to dissolve, and then evaporate and concentrate to dryness. The heating temperature of the solution is carried out while gradually increasing the temperature so that the solution does not boil. After drying the dry matter thoroughly at 110℃,
In order to improve air circulation and allow the reaction to take place inside, it is coarsely ground and heated at 380°C for about 3 hours until it reaches a constant weight.
After cooling, it is finely ground and used as a hardening agent. The X-ray diffraction pattern of the substance obtained at this time is shown in FIG. Fifth
The figure is an X-ray diffraction diagram of metastable phase aluminum metaphosphate Al(PO 3 ) 3 in an example of the present invention. The horizontal axis indicates the scanning angle 2θ, and the unit is °. The vertical axis represents the X-ray diffraction intensity. In the figure, 2 indicates the diffraction peak of the metastable phase Al(PO 3 ) 3 . The anticathode is Cu. As shown in the figure, there is only metastable phase Al( PO3 ) 3 , and equiaxed Al
(PO 3 ) 3 is rarely observed.
［発明の効果］
この発明は、以上説明したように、簡単に、安
価に作ることができ、硬化作用も非常に良好であ
る。次ぎにレジライト−水ガラス系についての硬
化作用を第６図に示す。第６図はレジライト−水
ガラス系についての硬化作用を示す図である。レ
ジライトは無定形シリカと準安定相メタリン酸ア
ルミニウムAl（PO3）3の１：１（重量比）の物であ
る。横軸はレジライトの重量％を、縦軸は硬化時
間（単位は日）を示す。レジライト20％、水ガラ
ス濃度30％が一番効果がある。[Effects of the Invention] As explained above, the present invention can be manufactured easily and inexpensively, and has a very good curing effect. Next, FIG. 6 shows the hardening effect of the regilite-water glass system. FIG. 6 is a diagram showing the hardening effect of the regilite-water glass system. Resilite is a 1:1 (weight ratio) of amorphous silica and metastable phase aluminum metaphosphate Al(PO 3 ) 3 . The horizontal axis shows the weight percent of Regilite, and the vertical axis shows the curing time (in days). A concentration of 20% Regilight and 30% water glass is most effective.
第１図は特公昭44−8977号の縮合リン酸アルミ
ニウムのＸ線回折図である。第２図は水酸化アル
ミニウムとリン酸のみで合成した縮合リン酸アル
ミニウムの加熱処理温度の相違によるＸ線回折図
を示す。第３図は酸化マグネシウム添加の場合の
加熱処理温度の相違によるＸ線回折図を示す。第
４図は第３図と同じ組成物で、等軸晶系と準安定
相のＸ線回折強度比B／Cと加熱処理温度の関
係を示す図である。第５図は本発明実施例の準安
定相メタリン酸アルミニウムAl（PO3）3のＸ線回
折図である。第６図はレジライト−水ガラス系に
ついての硬化作用を示す図である。
Figure 1 is an X-ray diffraction diagram of condensed aluminum phosphate published in Japanese Patent Publication No. 44-8977. FIG. 2 shows X-ray diffraction patterns of condensed aluminum phosphate synthesized using only aluminum hydroxide and phosphoric acid at different heat treatment temperatures. FIG. 3 shows X-ray diffraction patterns depending on the heat treatment temperature when magnesium oxide is added. FIG. 4 is a diagram showing the relationship between the X-ray diffraction intensity ratio B / C of the equiaxed crystal system and the metastable phase and the heat treatment temperature for the same composition as in FIG. 3. FIG. 5 is an X-ray diffraction diagram of metastable phase aluminum metaphosphate Al(PO 3 ) 3 in an example of the present invention. FIG. 6 is a diagram showing the hardening effect of the regilite-water glass system.
Claims (1)
P2O5＝１：0.2：３（モル比）となるように、酸化
アルミニウム均一混合物をリン酸に加熱溶解した
後、蒸発、濃縮、乾固させ、乾固物を粉砕した
後、恒量になるまで200〜400℃に熱処理して、準
安定相のメタリン酸アルミニウムを得ることを特
徴とする水ガラス用硬化剤の製法。1 Al 2 O 3 :MgO as a hardening agent for water glass:
A homogeneous aluminum oxide mixture was heated and dissolved in phosphoric acid so that P 2 O 5 = 1:0.2:3 (molar ratio), then evaporated, concentrated, and dried. 1. A method for producing a hardening agent for water glass, which comprises heat-treating at 200 to 400° C. until aluminum metaphosphate is in a metastable phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7749588A JPH01249638A (en) | 1988-03-30 | 1988-03-30 | Production of hardener for water glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7749588A JPH01249638A (en) | 1988-03-30 | 1988-03-30 | Production of hardener for water glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01249638A JPH01249638A (en) | 1989-10-04 |
| JPH0569052B2 true JPH0569052B2 (en) | 1993-09-30 |
Family
ID=13635559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7749588A Granted JPH01249638A (en) | 1988-03-30 | 1988-03-30 | Production of hardener for water glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01249638A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0403713B1 (en) | 2004-08-30 | 2021-01-12 | Universidade Estadual De Campinas - Unicamp | manufacturing process of a white pigment based on the synthesis of hollow particles of aluminum orthophosphate or polyphosphate |
| US7763359B2 (en) | 2004-08-30 | 2010-07-27 | Bunge Fertilizantes S.A. | Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same |
| US9023145B2 (en) | 2008-02-12 | 2015-05-05 | Bunge Amorphic Solutions Llc | Aluminum phosphate or polyphosphate compositions |
| US9371454B2 (en) | 2010-10-15 | 2016-06-21 | Bunge Amorphic Solutions Llc | Coating compositions with anticorrosion properties |
| US9005355B2 (en) | 2010-10-15 | 2015-04-14 | Bunge Amorphic Solutions Llc | Coating compositions with anticorrosion properties |
-
1988
- 1988-03-30 JP JP7749588A patent/JPH01249638A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01249638A (en) | 1989-10-04 |
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