CN104707933A - Binder composition for casting molding - Google Patents
Binder composition for casting molding Download PDFInfo
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- CN104707933A CN104707933A CN201410768862.9A CN201410768862A CN104707933A CN 104707933 A CN104707933 A CN 104707933A CN 201410768862 A CN201410768862 A CN 201410768862A CN 104707933 A CN104707933 A CN 104707933A
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Abstract
The present invention provides a binder composition for casting molding, which can reduce the amount of formaldehyde and furfuralcohol during casting molding, and also provides a casting molding composition used the same. The binder composition for casting molding contains furfuralcohol, 5- hydroxymethyl furfural and polyphenol, wherein the content of furfuralcohol is higher than 5 mass% and lower than 50 mass%, the content of the 5- hydroxymethyl furfural is higher than 35 mass% and lower than 75 mass%, and the content of the polyphenol is higher than 5 mass% and lower than 35 mass%.
Description
Technical field
The present invention relates to the making molds adhesive composition employing furane resins.
Background technology
Acid cure manufactures by the following method from solidity casting mold: in the fire resistance particles such as silica sand, add the making molds binding agent containing acid setting resin and the curing agent containing phosphoric acid, organic sulfonic acid, sulfuric acid etc., after it is mixing, the mixing sand obtained is filled in the grand master patterns such as wooden model, acid setting resin is solidified.
As manufacturing one of important condition in casting mold, the operating environment of (during resin solidification) when improving Casting mold manufacturing can be enumerated, the formaldehyde amount produced when special hope reduces Casting mold manufacturing and furfuryl alcohol amount.
Disclose following adhesive composition, it contains such as 5 hydroxymethyl furfural as the compound that can replace furfuryl alcohol, and in fact not containing phenol, formaldehyde, nitrogen, by reducing harmful substance, gas and achieve the improvement (patent document 1) of operating environment.
In addition, disclose following furan resin composition for casting mold manufacturing, it uses the furane resins containing polyatomic phenol, and formaldehyde gas during mixing moulding is reduced, and storage stability, curing characteristics good (patent document 2).
Prior art document
Patent document
Patent document 1:US20080207796 publication
Patent document 2: Japanese Unexamined Patent Publication 2010-12475 publication
Summary of the invention
Invent problem to be solved
But in the adhesive composition of existing proposition, the reduction of formaldehyde amount, furfuryl alcohol amount is insufficient, still has room for improvement.
The invention provides the formaldehyde amount of (during moulding) when one can make Casting mold manufacturing, making molds adhesive composition that furfuryl alcohol amount reduces, and use its casting mold composition.
For solving the means of problem
Making molds adhesive composition of the present invention contains furfuryl alcohol, 5 hydroxymethyl furfural and polyhydric phenols, and the content of described furfuryl alcohol is more than 5 quality % and the content of below 50 quality %, described 5 hydroxymethyl furfural is more than 35 quality % and the content of below 75 quality %, described polyhydric phenols is more than 5 quality % and below 35 quality %.
The curing agent that casting mold composition of the present invention contains fire resistance particle, described making molds adhesive composition and this making molds adhesive composition is solidified.
The manufacture method of casting mold of the present invention comprises: by fire resistance particle, described making molds adhesive composition and make curing agent that this making molds adhesive composition solidifies be obtained by mixing the mixed processes of casting mold composition, and described casting mold composition is filled in mould, make the curing process that this casting mold composition solidifies.
Invention effect
The making molds adhesive composition that when the present invention can provide one can make Casting mold manufacturing, the formaldehyde amount of (during moulding), furfuryl alcohol amount reduce.In addition, according to the present invention, the manufacture method of the formaldehyde amount of (during moulding), casting mold composition that furfuryl alcohol amount reduces and casting mold when one can be provided can to make Casting mold manufacturing.
Detailed description of the invention
The making molds of present embodiment is (following with adhesive composition, also referred to as " adhesive composition ") containing furfuryl alcohol, 5 hydroxymethyl furfural and polyhydric phenols, the content of described furfuryl alcohol is more than 5 quality % and below 50 quality %, the content of described 5 hydroxymethyl furfural is more than 35 quality % and below 75 quality %, and the content of described polyhydric phenols is more than 5 quality % and below 35 quality %.The formaldehyde amount of (during moulding), the effect of furfuryl alcohol amount reduction when the making molds adhesive composition of present embodiment has been given play to and can have been made Casting mold manufacturing.The reason playing this effect is still uncertain, but considers as described below.
In such as existing adhesive composition disclosed in patent document 1, furfuryl alcohol content is many, and therefore the formaldehyde amount of (during moulding) during Casting mold manufacturing, furfuryl alcohol amount are many, and foul smell becomes problem.Known to reduce foul smell, reduce furfuryl alcohol content, but mould strength can decline.On the other hand, the polyhydric phenols used in known present embodiment is used as the crosslinking agent of adhesive composition.Usually, crosslinking agent is used to be considered to general knowledge on a small quantity relative to the resin combination forming binding agent, think in present embodiment: increase 5 hydroxymethyl furfural amount by reducing furfuryl alcohol content, in addition the polyhydric phenols as essential component containing a great deal of, also the effect of the binding agent as composition in its entirety can be kept, do not cause the decline of mould strength, and when can make Casting mold manufacturing, the formaldehyde amount of (during moulding), furfuryl alcohol amount reduce.
Below, the composition contained in the adhesive composition of present embodiment is described.
(from solidity making molds adhesive composition)
< furfuryl alcohol >
From the view point of raising mould strength, the adhesive composition of present embodiment contains furfuryl alcohol.
From the view point of raising mould strength, the content of the furfuryl alcohol of described adhesive composition is preferably more than 5 quality %, is more preferably more than 8 quality %, more preferably more than 10 quality %.From the view point of formaldehyde amount, the furfuryl alcohol amount of (during moulding) during reduction Casting mold manufacturing, the furfuryl alcohol content of described adhesive composition is preferably below 50 quality %, be more preferably below 45 quality %, more preferably below 35 quality %, further be preferably below 25 quality %, be further preferably below 20 quality %.In addition, from the view point of formaldehyde amount, the furfuryl alcohol amount of (during moulding) when improving mould strength and reduce Casting mold manufacturing, the content of the furfuryl alcohol of described adhesive composition is preferably more than 5 quality % and below 50 quality %, be more preferably more than 8 quality % and below 45 quality %, more preferably more than 10 quality % and below 35 quality %, further be preferably more than 10 quality % and below 25 quality %, be further preferably more than 10 quality % and below 20 quality %.
< 5 hydroxymethyl furfural >
From the view point of raising mould strength, the adhesive composition of present embodiment contains 5 hydroxymethyl furfural.
From the view point of raising mould strength, the content of the 5 hydroxymethyl furfural of described adhesive composition is preferably more than 35 quality %, is more preferably more than 40 quality %, more preferably more than 45 quality %.From the view point of raising mould strength, the content of the 5 hydroxymethyl furfural of described adhesive composition is preferably below 75 quality %, is more preferably below 70 quality %, more preferably below 65 quality %.In addition, from the view point of raising mould strength, the content of the 5 hydroxymethyl furfural of described adhesive composition is preferably more than 35 quality % and below 75 quality %, is more preferably more than 40 quality % and below 70 quality %, more preferably more than 45 quality % and below 65 quality %.
< polyhydric phenols >
From the view point of the formaldehyde amount of (during moulding) when improving mould strength and reduce Casting mold manufacturing, the adhesive composition of present embodiment contains polyhydric phenols.
From the view point of the formaldehyde amount of (during moulding) when improving mould strength and reduce Casting mold manufacturing, the polyphenol content of described adhesive composition is preferably more than 5 quality %, is more preferably more than 8 quality %, more preferably more than 10 quality %.From the view point of raising mould strength, the polyphenol content of described adhesive composition is preferably below 35 quality %, is more preferably below 30 quality %, more preferably below 25 quality %, is further preferably below 20 quality %.In addition, from the view point of the formaldehyde amount of (during moulding) when improving mould strength and reduce Casting mold manufacturing, the polyphenol content of described adhesive composition is preferably more than 5 quality % and below 35 quality %, be more preferably more than 8 quality % and below 30 quality %, more preferably more than 10 quality % and below 25 quality %, are further preferably more than 10 quality % and below 20 quality %.
As the polyhydric phenols of described adhesive composition, resorcinol, pyrogallol, phloroglucin, catechol, quinhydrones, methylene bis-phenol, condensed type tannin, hydrolysis-type tannin etc. can be enumerated.Among those, from the view point of the formaldehyde amount of (during moulding) when improving mould strength and reduce Casting mold manufacturing, preferably be selected from resorcinol, pyrogallol, phloroglucin, catechol more than one, be more preferably be selected from resorcinol, pyrogallol more than one, more preferably resorcinol.
From the view point of the generation suppressing formaldehyde, furfuryl alcohol, the described furfuryl alcohol content of described adhesive composition and the mass ratio (furfuryl alcohol content/5 hydroxymethyl furfural content) of described 5 hydroxymethyl furfural content are preferably 5/95 ~ 60/40, be more preferably 10/90 ~ 50/50, more preferably 15/85 ~ 30/70.And, from the view point of maintenance mould strength, the total of the content of the described polyhydric phenols of described adhesive composition and the content of described furfuryl alcohol and the mass ratio (total/5 hydroxymethyl furfural content of the content of polyhydric phenols and the content of furfuryl alcohol) of 5 hydroxymethyl furfural content are preferably 20/80 ~ 80/20, be more preferably 30/70 ~ 70/30, more preferably 35/65 ~ 60/40.Above-mentioned scope is in by the mass ratio of the respective content making described furfuryl alcohol, described 5 hydroxymethyl furfural and described polyhydric phenols, can under the condition not reducing mould strength, the formaldehyde of (during moulding), the generation of furfuryl alcohol during suppression Casting mold manufacturing more significantly.
Other composition of < >
The making molds adhesive composition of present embodiment also can containing the composition except described furfuryl alcohol, described 5 hydroxymethyl furfural and described polyhydric phenols within 20 quality %.As this composition, curing accelerator, water, additive etc. can be enumerated.
< curing accelerator >
In the adhesive composition of present embodiment, from the view point of improving the viewpoint of curing rate and improving the final strength of casting mold, curing accelerator can also be contained.It should be noted that, curing accelerator, except being included in except in adhesive composition, also can make an addition in casting mold composition separately.From the view point of improving curing rate, improving the final strength of casting mold, as curing accelerator, be preferably selected from compound (hereinafter referred to as curing accelerator (1)) represented by following general formula (1) and more than one in aromatic dialdehyde.
[chemical formula 1]
(in formula, X
1and X
2represent hydrogen atom, CH respectively
3or C
2h
5any one.〕
From the view point of improving the viewpoint of curing rate and improving the final strength of casting mold, the content of the curing accelerator in described adhesive composition is preferably more than 0.5 quality %, be more preferably more than 1.8 quality %, more preferably more than 3.0 quality %, are further preferably more than 5.0 quality %.From the view point of curing accelerator to the deliquescent viewpoint of furfuryl alcohol and the final strength improving casting mold, the content of the curing accelerator in described adhesive composition is preferably below 20 quality %, be more preferably below 15 quality %, more preferably below 12 quality %, are further preferably below 10 quality %.
As described curing accelerator (1), can 2 be enumerated, two (methylol) furans, 2 of 5-, two (methoxy) furans of 5-, 2,5-two (ethoxyl methyl) furans, 2-methylol-5-methoxy furans, 2-methylol-5-ethoxyl methyl furans, 2-methoxy-5-ethoxyl methyl furans.Wherein, from the view point of the final strength improving casting mold, preferably use two (methylol) furans of 2,5-.
From the view point of improving the viewpoint of curing rate and improving the final strength of casting mold, the content of the curing accelerator (1) in described adhesive composition is preferably more than 0.5 quality %, be more preferably more than 1.8 quality %, more preferably more than 3.0 quality %, are further preferably more than 5.0 quality %.From the view point of curing accelerator (1) to the deliquescent viewpoint of furane resins and the final strength improving casting mold, the content of the curing accelerator (1) in described adhesive composition is preferably below 20 quality %, be more preferably below 15 quality %, more preferably below 12 quality %, are further preferably below 10 quality %.
As described aromatic dialdehyde, terephthalaldehyde, OPA and m-terephthal aldehyde etc. can be enumerated, and their derivative etc.Fully be dissolved in the viewpoint of furane resins from the view point of making aromatic dialdehyde and suppress the foul smell of aromatic dialdehyde self, the content of the aromatic dialdehyde in described adhesive composition is preferably more than 0.1 quality %, be more preferably more than 0.5 quality %, more preferably more than 1 quality %.From the same viewpoint, the content of the aromatic dialdehyde in described adhesive composition is preferably below 15 quality %, is more preferably below 10 quality %, more preferably below 5 quality %.
< moisture >
For object adhesive composition being adjusted to maneuverable viscosity, moisture can be added further in described adhesive composition.But if moisture is excessive, then the curing reaction of described acid setting resin is likely obstructed.From the view point of the final strength improving casting mold, the moisture in described adhesive composition is preferably below 5 quality %, is more preferably below 3.5 quality %, more preferably below 2.0 quality %.
< additive >
In addition, in described adhesive composition, can also containing additives such as silane couplers.Such as, if containing silane coupler in described adhesive composition, then the final strength of the casting mold obtained can be made to improve further, therefore preferably.As silane coupler, N-β-(amino-ethyl)-gamma-amino hydroxypropyl methyl dimethoxysilane can be used, N-β-(amino-ethyl)-gamma-amino propyl trimethoxy silicane, N-β-(amino-ethyl)-γ aminopropyltriethoxy silane, the amino silanes such as 3-TSL 8330, 3-glycidoxypropyltrime,hoxysilane, 3-glycidoxypropyl group triethoxysilane, 3-glycidoxypropyl diethoxy silane, the epoxy radicals silicone hydrides such as 3-glycidoxypropyl group triethoxysilane, ureido silane, hydrosulphonyl silane, sulfuration silane, methacryloxypropyl silane, acryloxy silane etc.Be preferably amino silane, epoxy radicals silicone hydride, ureido silane.Be more preferably amino silane, epoxy radicals silicone hydride, more preferably amino silane.Among amino silane, preferred N-β-(amino-ethyl)-gamma-amino hydroxypropyl methyl dimethoxysilane.From the view point of the final strength improving casting mold, the content of silane coupler in described adhesive composition is preferably more than 0.01 quality %, is more preferably more than 0.05 quality %.From the same viewpoint, the content of silane coupler in described adhesive composition is preferably below 0.5 quality %, is more preferably below 0.3 quality %.
(casting mold composition)
The adhesive composition of present embodiment can be mixed to casting mold composition with fire resistance particle and curing agent.The casting mold composition of present embodiment contains described making molds adhesive composition, fire resistance particle and curing agent.
As described fire resistance particle, the known fire resistance particle of silica sand, chromite sand, zircon sand, olivine sand, aluminum oxide sand, mullite sand, mullite synthesizing sand etc. can be used, in addition, fire resistance particle etc. that reclaimed by the fire resistance particle used, regeneration process can also be used.
Described curing agent is the curing agent that the adhesive composition of present embodiment is solidified.Concrete, sulfonate-based compound, phosphoric acid based compound, the sulfuric acid etc. such as xylene monosulfonic acid (particularly meta-xylene sulfonic acid) and toluenesulfonic acid (particularly p-methyl benzenesulfonic acid) can be enumerated.From the view point of operability, these compounds are preferably the aqueous solution.In addition, can containing more than one the solvent, the carboxylic acids that are selected from alcohols, ether alcohol class and ester class in described curing agent.The pH that can typically be used in 25 DEG C is less than 2, is more preferably the curing agent of less than 1.Acid concentration in curing agent is such as 3 quality % ~ 100 quality %, is preferably 10 quality % ~ 90 quality %, is more preferably 15 quality % ~ 80 quality %.Its concentration and addition preferably adjust in right amount according to the temperature of used sand, the gas epidemic disaster of environment that uses.Described casting mold composition is preferably using in solidity casting mold.Referring to from solidity casting mold at this: if to hybrid adhesive composition in sand and curing agent, then As time goes on react, and there is the casting mold of the such formation of solidification in casting mold.As the temperature of used sand, be the scope of-20 DEG C ~ 50 DEG C, be preferably 0 DEG C ~ 40 DEG C.For the sand of said temperature, by selecting appropriate curing agent to be added in sand, casting mold can appropriateness solidify.
In described mould composition, the ratio of described fire resistance particle and described adhesive composition, described curing agent can suitably set, from the view point of the final strength improving casting mold, relative to described fire resistance particle 100 mass parts, described adhesive composition is preferably more than 0.5 mass parts and below 1.5 mass parts, and described curing agent is preferably more than 0.07 mass parts and below 1.0 mass parts.
In addition, for the mass ratio of described adhesive composition and described curing agent, from the view point of the final strength improving casting mold, relative to described adhesive composition 100 mass parts, described curing agent is preferably more than 10 mass parts, be more preferably more than 30 mass parts, more preferably more than 35 mass parts.For the mass ratio of described adhesive composition and described curing agent, from the same viewpoint, relative to described adhesive composition 100 mass parts, described curing agent is preferably below 80 mass parts, be more preferably below 60 mass parts, more preferably below 55 mass parts.
Described adhesive composition is suitably for Casting mold manufacturing.
(manufacture method of casting mold)
Casting mold can be manufactured by making described casting mold composition solidify.In the manufacture method of the casting mold of present embodiment, can directly utilize the manufacturing process of existing casting mold to manufacture casting mold.Specifically, binding agent composition for moulds and highly acid curing agent are mixed together in after in sand, are filled in the grand master patterns such as wooden model.As the manufacture method of preferred casting mold, the manufacture method of the casting mold with following operation can be enumerated, described operation is: by described fire resistance particle, described making molds adhesive composition and make curing agent that described making molds adhesive composition solidifies be obtained by mixing the mixed processes of casting mold composition, and described casting mold composition is filled in mould, make the curing process that this casting mold composition solidifies.
For above-mentioned embodiment, the present invention discloses following composition, manufacture method or purposes further.
< 1 > making molds adhesive composition, it contains furfuryl alcohol, 5 hydroxymethyl furfural and polyhydric phenols, wherein,
The content of described furfuryl alcohol is more than 5 quality % and below 50 quality %,
The content of described 5 hydroxymethyl furfural is more than 35 quality % and below 75 quality %,
The content of described polyhydric phenols is more than 5 quality % and below 35 quality %.
< 2 > is according to the making molds adhesive composition of described < 1 >, wherein, described furfuryl alcohol content is preferably more than 5 quality %, be more preferably more than 8 quality %, more preferably more than 10 quality %, be preferably below 50 quality %, be more preferably below 45 quality %, more preferably below 35 quality %, further be preferably below 25 quality %, further be preferably below 20 quality %, be preferably more than 5 quality % and below 50 quality %, be more preferably more than 8 quality % and below 45 quality %, more preferably more than 10 quality % and below 35 quality %, further be preferably more than 10 quality % and below 25 quality %, further be preferably more than 10 quality % and below 20 quality %.
< 3 > is according to the making molds adhesive composition of described < 1 > or < 2 >, wherein, the content of described 5 hydroxymethyl furfural is preferably more than 35 quality %, be more preferably more than 40 quality %, more preferably more than 45 quality %, be preferably below 75 quality %, be more preferably below 70 quality %, more preferably below 65 quality %, be preferably more than 35 quality % and below 75 quality %, be more preferably more than 40 quality % and below 70 quality %, more preferably more than 45 quality % and below 65 quality %.
The making molds adhesive composition of < 4 > any one of described < 1 > ~ < 3 >, wherein, the content of described polyhydric phenols is preferably more than 5 quality %, be more preferably more than 8 quality %, more preferably more than 10 quality %, be preferably below 35 quality %, be more preferably below 30 quality %, more preferably below 25 quality %, further be preferably below 20 quality %, be preferably more than 5 quality % and below 35 quality %, be more preferably more than 8 quality % and below 30 quality %, more preferably more than 10 quality % and below 25 quality %, further be preferably more than 10 quality % and below 20 quality %.
The making molds adhesive composition of < 5 > any one of described < 1 > ~ < 4 >, wherein, the mass ratio (furfuryl alcohol content/5 hydroxymethyl furfural content) of the content of the described furfuryl alcohol of described adhesive composition and the content of described 5 hydroxymethyl furfural is preferably 5/95 ~ 60/40, be more preferably 10/90 ~ 50/50, more preferably 15/85 ~ 30/70.
The making molds adhesive composition of < 6 > any one of described < 1 > ~ < 5 >, wherein, the total of the content of the described polyhydric phenols of described adhesive composition and the content of described furfuryl alcohol and the mass ratio (total/5 hydroxymethyl furfural content of polyphenol content and furfuryl alcohol content) of 5 hydroxymethyl furfural content, be preferably 20/80 ~ 80/20, be more preferably 30/70 ~ 70/30, more preferably 35/65 ~ 60/40.
The making molds adhesive composition of < 7 > any one of described < 1 > ~ < 6 >, wherein, described polyhydric phenols be selected from resorcinol, pyrogallol, phloroglucin, catechol, quinhydrones, methylene bis-phenol, condensed type tannin, hydrolysis-type tannin more than one.
The making molds adhesive composition of < 8 > any one of described < 1 > ~ < 7 >, wherein, described making molds adhesive composition contains the composition except described furfuryl alcohol, described 5 hydroxymethyl furfural and described polyhydric phenols of below 20 quality %.
The making molds adhesive composition of < 9 > any one of described < 1 > ~ < 8 >, it is also containing curing accelerator.
< 10 > is according to the making molds adhesive composition in described < 9 >, wherein, more than one for being selected from curing accelerator (1), polyatomic phenol and the aromatic dialdehyde represented by following general formula (1) of described curing accelerator.
[chemical formula 2]
(in formula, X
1and X
2represent hydrogen atom, CH respectively
3or C
2h
5any one.〕
< 11 > is according to the making molds adhesive composition of described < 9 > or < 10 >, wherein, the content of described curing accelerator is preferably more than 0.5 quality %, be more preferably more than 1.8 quality %, more preferably more than 3.0 quality %, further be preferably more than 5.0 quality %, be preferably below 20 quality %, be more preferably below 15 quality %, more preferably below 12 quality %, further be preferably below 10 quality %.
< 12 > is according to the making molds adhesive composition of described < 10 > or < 11 >, wherein, described curing accelerator (1) is preferably selected from 2, two (methylol) furans of 5-, 2, two (methoxy) furans of 5-, 2, two (ethoxyl methyl) furans of 5-, 2-methylol-5-methoxy furans, 2-methylol-5-ethoxyl methyl furans, more than one in 2-methoxy-5-ethoxyl methyl furans, be more preferably 2, two (methylol) furans of 5-.
The making molds adhesive composition of < 13 > any one of described < 10 > ~ < 12 >, wherein, the content of described curing accelerator (1) is preferably more than 0.5 quality %, be more preferably more than 1.8 quality %, more preferably more than 3.0 quality %, further be preferably more than 5.0 quality %, be preferably below 20 quality %, be more preferably below 15 quality %, more preferably below 12 quality %, further be preferably below 10 quality %.
The making molds adhesive composition of < 14 > any one of described < 10 > ~ < 13 >, wherein, described aromatic dialdehyde is preferably selected from terephthalaldehyde, OPA and m-terephthal aldehyde etc., and more than one in their derivative.
The making molds adhesive composition of < 15 > any one of described < 10 > ~ < 14 >, wherein, the content of described aromatic dialdehyde is preferably more than 0.1 quality %, be more preferably more than 0.5 quality %, more preferably more than 1 quality %, be preferably below 15 quality %, be more preferably below 10 quality %, more preferably below 5 quality %.
The making molds adhesive composition of < 16 > any one of described < 1 > ~ < 15 >, it is also containing moisture, moisture in adhesive composition is preferably below 5.0 quality %, be more preferably below 3.5 quality %, more preferably below 2.0 quality %.
The making molds adhesive composition of < 17 > any one of described < 1 > ~ < 16 >, it is also containing silane coupler.
< 18 > is according to the making molds adhesive composition of described < 17 >, wherein, the content of described silane coupler is preferably more than 0.01 quality %, be more preferably more than 0.05 quality %, be preferably below 0.5 quality %, be more preferably below 0.3 quality %.
< 19 > is according to the making molds adhesive composition of described < 17 > or < 18 >, wherein, described silane coupler is N-β-(amino-ethyl)-gamma-amino hydroxypropyl methyl dimethoxysilane.
< 20 > casting mold composition, it contains:
Fire resistance particle, making molds adhesive composition any one of described < 1 > ~ < 19 > and the curing agent that this making molds adhesive composition is solidified.
< 21 > is according to the casting mold composition of described < 20 >, wherein, for the ratio of described fire resistance particle and described adhesive composition, described curing agent, relative to described fire resistance particle 100 mass parts, described adhesive composition is preferably more than 0.5 mass parts and below 1.5 mass parts, and described curing agent is preferably more than 0.07 mass parts and below 1.0 mass parts.
< 22 > is according to the casting mold composition of described < 20 > or < 21 >, wherein, for the mass ratio of described adhesive composition and described curing agent, relative to described adhesive composition 100 mass parts, described curing agent is preferably more than 10 mass parts, be more preferably more than 30 mass parts, more preferably more than 35 mass parts, be preferably below 80 mass parts, be more preferably below 60 mass parts, more preferably below 55 mass parts.
The manufacture method of a < 23 > casting mold, it comprises:
By the making molds adhesive composition any one of described fire resistance particle, described < 1 > ~ < 19 > and make curing agent that this making molds adhesive composition solidifies be obtained by mixing the mixed processes of described casting mold composition, and described casting mold composition is filled in mould, make the curing process that this casting mold composition solidifies.
Composition described in < 24 > any one of < 1 > ~ < 19 > is as the purposes of making molds adhesive composition.
Embodiment
Below, show that embodiments of the invention etc. are described to concrete.
(embodiment 1 ~ 10, comparative example 1 ~ 4)
The Production Example > of < adhesive composition
Mix furfuryl alcohol, 5 hydroxymethyl furfural, resorcinol, pyrogallol, silane coupler in the mode becoming the composition recorded in table 1 described later, manufacture the adhesive composition of embodiment 1 ~ 10 and comparative example 1 ~ 4.N-β-(amino-ethyl)-gamma-amino hydroxypropyl methyl dimethoxysilane (SHIN-ETSU HANTOTAI's chemical industry (strain) manufacture) is used as silane coupler.
< test example 1 > (assay method of formaldehyde amount and furfuryl alcohol amount)
25 DEG C, under the condition of 55%RH, utilize mixer to add curing agent 8.0g to silica sand (Freemantle fresh sand) 2.0kg, then add the adhesive composition 20g of the composition shown in table 1, by their mixing 2 minutes.Mixing sand 5g after just mixing is sealed in the polyethylene bottle of 500mL, after 10 minutes, measures formaldehyde amount and furfuryl alcohol amount with detector tube.Numerical value is higher, shows to produce gas flow more.It should be noted that, curing agent uses xylene monosulfonic acid/sulfuric acid system curing agent (Hua Wang Quaker company manufacture KAO LIGHTNER curing agent US-3 and Hua Wang Quaker company manufacture the mixture of KAO LIGHTNER curing agent C-21).The mode that the mass ratio (US-3/C-21) of US-3 and C-21 becomes 0.15 ~ 0.30MPa according to the compressive strength of the test pieces in aftermentioned test example 2 adjusts.The mass ratio (US-3/C-21) of US-3 and the C-21 of the curing agent each embodiment etc. used is shown in Table 1.
< test example 2 > (Production Example of casting mold composition)
25 DEG C, under the condition of 55%RH, xylene monosulfonic acid/sulfuric acid system curing agent (Hua Wang Quaker company manufacture KAO LIGHTNER curing agent US-3 and Hua Wang Quaker company manufacture the mixture of KAO LIGHTNER curing agent C-21) 0.40 mass parts is added to silica sand (Freemantle) 100 mass parts, then add adhesive composition 1.00 mass parts of each embodiment shown in table 2 and comparative example respectively, they are obtained by mixing casting mold composition (mixing sand).
(mensuration of compressive strength)
Mixing sand after just mixing is filled in the cylindrical test piece mould of diameter 50mm, height 50mm, the demoulding after 0.5 hour, utilize the compressive strength (MPa) of the method test pieces were measured recorded in JIS Z 2604-1976, obtain the mass ratio (US-3/C-21) that test pieces compressive strength is US-3 and the C-21 of the curing agent of 0.15 ~ 0.30MPa.
The result of each embodiment and comparative example is shown in Table 1.
[table 1]
Claims (4)
1. a making molds adhesive composition, it contains furfuryl alcohol, 5 hydroxymethyl furfural and polyhydric phenols, wherein,
The content of described furfuryl alcohol is more than 5 quality % and below 50 quality %,
The content of described 5 hydroxymethyl furfural is more than 35 quality % and below 75 quality %,
The content of described polyhydric phenols is more than 5 quality % and below 35 quality %.
2. making molds adhesive composition according to claim 1, wherein,
Described polyhydric phenols be selected from resorcinol, pyrogallol, phloroglucin, catechol more than one.
3. a casting mold composition, it contains:
Making molds adhesive composition described in fire resistance particle, claim 1 or 2 and the curing agent that this making molds adhesive composition is solidified.
4. a manufacture method for casting mold, it comprises:
By the making molds adhesive composition described in fire resistance particle, claim 1 or 2 and make curing agent that this making molds adhesive composition solidifies be obtained by mixing the mixed processes of casting mold composition, and
Described casting mold composition is filled in mould, makes the curing process that this casting mold composition solidifies.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108348986A (en) * | 2015-11-27 | 2018-07-31 | 花王株式会社 | Making molds external member |
| CN109577009A (en) * | 2019-01-30 | 2019-04-05 | 山东科技大学 | One kind is for casting filter screen biomass organic material-inorganic sol composite coating, preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6607729B2 (en) * | 2015-08-06 | 2019-11-20 | 花王株式会社 | Binder composition for mold making |
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| JP6010426B2 (en) * | 2011-10-31 | 2016-10-19 | 花王株式会社 | Binder composition for mold making |
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| CN102015152A (en) * | 2008-04-30 | 2011-04-13 | 花王株式会社 | Method for producing mold |
| JP2010012475A (en) * | 2008-07-01 | 2010-01-21 | Hitachi Chem Co Ltd | Furan resin composition for manufacturing mold, and its applications |
| CN102802833A (en) * | 2010-03-18 | 2012-11-28 | 花王株式会社 | Binder composition for use in mold manufacturing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108348986A (en) * | 2015-11-27 | 2018-07-31 | 花王株式会社 | Making molds external member |
| CN109577009A (en) * | 2019-01-30 | 2019-04-05 | 山东科技大学 | One kind is for casting filter screen biomass organic material-inorganic sol composite coating, preparation method and application |
| CN109577009B (en) * | 2019-01-30 | 2021-01-26 | 山东科技大学 | Biomass organic material-inorganic sol composite coating for casting filter screen, preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104707933B (en) | 2019-03-26 |
| JP6499848B2 (en) | 2019-04-10 |
| JP2015131343A (en) | 2015-07-23 |
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