WO2001088008A1 - Composition thermodurcissable - Google Patents

Composition thermodurcissable Download PDF

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Publication number
WO2001088008A1
WO2001088008A1 PCT/JP2000/003119 JP0003119W WO0188008A1 WO 2001088008 A1 WO2001088008 A1 WO 2001088008A1 JP 0003119 W JP0003119 W JP 0003119W WO 0188008 A1 WO0188008 A1 WO 0188008A1
Authority
WO
WIPO (PCT)
Prior art keywords
thermosetting composition
polyol
urethane prepolymer
composition according
terminal isocyanate
Prior art date
Application number
PCT/JP2000/003119
Other languages
English (en)
Japanese (ja)
Inventor
Kenta Nakayama
Hitoshi Ohno
Takashi Minamihori
Original Assignee
Sunstar Giken Kabushiki Kaisha
Uni-Sunstar B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sunstar Giken Kabushiki Kaisha, Uni-Sunstar B.V. filed Critical Sunstar Giken Kabushiki Kaisha
Priority to PCT/JP2000/003119 priority Critical patent/WO2001088008A1/fr
Publication of WO2001088008A1 publication Critical patent/WO2001088008A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
    • C09K3/1021—Polyurethanes or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/80—Masked polyisocyanates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2190/00—Compositions for sealing or packing joints

Definitions

  • the present invention relates to a thermosetting composition, more specifically, an urethane prepolymer containing a terminal isocyanate group produced by using a polymer polyol as a polyol component in an acrylsol containing acrylic resin particles, a plasticizer and a filler.
  • a thermosetting composition more specifically, an urethane prepolymer containing a terminal isocyanate group produced by using a polymer polyol as a polyol component in an acrylsol containing acrylic resin particles, a plasticizer and a filler.
  • the present invention relates to a thermosetting composition capable of exhibiting hardness. Sealing in an automobile assembly line is performed to maintain airtightness and watertightness after assembling press-formed steel sheets by partial welding such as spot welding.A body sealer is usually applied to joints and gaps. I have. ⁇
  • PVC plastisols made by dispersing polyvinyl chloride (PVC) powder in a plasticizer have been widely used as a powerful body sealer.
  • PVC polyvinyl chloride
  • the main component is PVC, it is easily decomposed by heat or light (PVC). Discoloration occurs due to the inferiority of the film, resulting in poor appearance), and hydrogen chloride is generated at the time of its decomposition, and the base steel sheet is liable to be corroded and corroded.
  • alternative materials have been required from the viewpoint of disposal and incineration of PVC.
  • NCO terminal isocyanate group
  • block a polyisocyanate compound
  • thermosetting acrylic sol composition has been proposed in which an acrylic sol composed of acrylic resin particles, a plasticizer and a filler is blended with a blocked polyisocyanate compound and a curing agent thereof.
  • This composition improves the adhesion of the acrylic sol to the base steel sheet, and the blocked polysocyanate compound improves the flexibility, which is a drawback of the acrylic resin.
  • aliphatic polyamines, alicyclic polyamines or aromatic polyamines are disclosed as curing agents, but since these polyamines are in liquid form, they are 20 to 40 in the composition. The long-term storage stability in the C atmosphere is poor, in which case it cannot be used as an industrial sealing agent.
  • the present inventors have conducted intensive studies as an alternative to the conventional PVC plastisol to provide an acrylsol-based composition having the curing properties required for sealing work. '' By blending a urethane prepolymer containing NCO-terminated polymer produced using a polymer polyol as the polyol component, a cured silicone film with excellent hardness, elongation at break, and elasticity, and excellent strength and elongation Have been found, and the present invention has been completed.
  • the present invention relates to a block (hereinafter, referred to as a block) of an urethane prepolymer having a terminal NCO obtained by the reaction of a polyol and an excess of polyisocyanate compound with an acryl sol comprising acrylic resin particles, a plasticizer and a filler.
  • a block of an urethane prepolymer having a terminal NCO obtained by the reaction of a polyol and an excess of polyisocyanate compound with an acryl sol comprising acrylic resin particles, a plasticizer and a filler.
  • the thermosetting composition containing the urethane prepolymer) and its curing agent at least a part of the polyol used for the terminal NCO-containing urethane prepolymer contains a polymer polyol or the terminal NCO-containing urethane prepolymer.
  • the polymer polyol and excess polyisocyanate are included in at least a part of the block
  • the present invention provides a thermosetting composition characterized by containing a block of a urethane prepolymer containing a terminal NCO obtained by a reaction of a conjugate.
  • Examples of the acryl resin particles in the present invention include alkyl acrylate (eg, methyl, ethyl, butyl, 2-ethylhexyl, etc.) or alkyl methacrylate (alkyl, methyl, ethyl, butyl, lauryl, stearyl). Or homopolymers or copolymers with other acrylic monomers (methacrylic acid, acrylic acid, itaconic acid, etc.), usually in the form of primary particles and / or secondary aggregates of primary particles Resin particles having a particle size of 0.1 to 100 ⁇ are fisted.
  • alkyl acrylate eg, methyl, ethyl, butyl, 2-ethylhexyl, etc.
  • alkyl methacrylate alkyl, methyl, ethyl, butyl, lauryl, stearyl
  • homopolymers or copolymers with other acrylic monomers usually in the form of primary particles and / or secondary aggregates
  • plasticizer in the present invention examples include di (2-ethylhexyl) phthalate, ptinolebenzino phthalate, dinoel phthalate, disononino phthalate, diisodecino phthalate, divinyl decyl phthalate, diheptyl phthalate, Phthalates such as butyl phthalyl butyl dalicholate; aliphatic dibasic acid esters such as octyl adipate, didecyl aitate and octyl sebacate; polyoxyethylene glycolone benzoate, polyoxypropylene Polyglycol benzoates such as glycol dibenzoate; Phosphates such as trip, tyl phosphate and tricresyl phosphate; Polyester plasticizers such as phthalic acid and trimellitate; Alkyl-substituted diphenyl, a Kill substituted terphenyl, partially hydrogenated alkyl terphenyl,
  • Examples of the filler in the present invention include clay, calcium carbonate (heavy calcium carbonate, precipitated calcium carbonate, surface-treated calcium carbonate, etc.), magnesium carbonate, titanium oxide, calcined stone, barium sulfate, zinc oxide, anhydrous Caic acid, My powder, Asbestos, Tanolek, Bentonite, Silica, Glass powder, Bengala, Carbon black, Graphite powder, Alumina, Hollow particles, Shirasu balloon, Glass balloon, Plastic balloon, Ceramic balloon, Metal powder, etc.
  • general-purpose polyols that can be used in the production of Prokro-Danitan urethane prepolymer described below include, for example, polyoxyalkylene polyols and polyethers.
  • Modified terpolyols polyether polyols containing polytetramethylene ether glycol; condensed polyester polyols, lactone-based polyester polyols, polyester polyols containing polycarbonate diols; and other polyptogen-based polyols and polyolefin-based polyols.
  • the polymer polyol used for at least a part (that is, all or a part) of the polyol in the blocked polyurethane prepolymer of the present invention includes, for example, a polyether polyol having a molecular weight of 100 to 150
  • a mixture of a compound having a molecular weight of less than 500 and a compound having a molecular weight of 500 or more is acrylonitrile alone.
  • acrylonitrile and styrene acrylamide, acrylic acid ester, methacrylic acid ester and butyl acetate, and, if necessary, methyl styrene, dimethyl styrene, hine, metathalonitrile, phthalyl acrylate, benzyl methacrylate, etc.
  • a polymer of the above acrylonitrile alone or a mixed monomer may be separately prepared and added to the polyether polyol.
  • the Prokui Dani urethane prepolymer used in the present invention is characterized by using the above-mentioned polymer polyol in the production stage, and can be prepared by the following embodiments. '
  • each of the polymer polyol and the polyol is reacted with an excess of a polyisocyanate compound, and then subjected to blocking with a blocking agent, thereby obtaining the blocked blocked urethane prepolymer.
  • Mix (the weight ratio of the former prepolymer / the latter prepolymer is set to 1/9 to 10%; if the ratio of the former prepolymer is less than 1, the strength or elongation of the physical properties cannot be obtained).
  • polyisocyanate compound examples include trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, pentamethylene diisocyanate, 2, 4, 4- or 2 1,2,4-trimethylhexamethylene diisocyanate, dodecamethylene diisocyanate, 1,3-cyclopentane diisocyanate, 1,6-hexane diisocyanate (HD I),
  • Examples of the above blocking agents include alcohols such as methanol, ethanol, propanol, butanol, and isopanol; phenols such as phenol, cresol, xylenol, ⁇ -nitrophenol, and alkylphenol; methyl malonate, dimethyl malonate, and malon.
  • alcohols such as methanol, ethanol, propanol, butanol, and isopanol
  • phenols such as phenol, cresol, xylenol, ⁇ -nitrophenol, and alkylphenol
  • methyl malonate dimethyl malonate, and malon.
  • Active methylene compounds such as getyl acid, ethyl acetate, methyl acetate acetate, and acetylaceton; acid amides such as acetoamide, acrylamide, and acetoyulide; succinimide, maleic acid Acid imids such as imids; imidazoles such as 2-ethinoleimidazole and 2-ethyl-14-methinoleimidazole; lactams such as 2-pyrrolidone and ⁇ -caprolactam; acetoxime, meth ⁇ Oximes of ketones or aldehydes such as ethyl ketoxime, cyclohexanone oxime, and acetoanoredoxime; and other ethylenimines and bisulfites.
  • acid amides such as acetoamide, acrylamide, and acetoyulide
  • succinimide maleic acid
  • Acid imids such as imids
  • imidazoles such as 2-
  • a compound having two or more functional groups capable of reacting with NCO in the molecule
  • ethylenediamine Aliphatic polyamines such as diethylenetriamine, hexamethylenediamine, triethylenetetramine, and polyoxypropyleneamine
  • aromatic or alicyclic such as m-xylylenediamine, hexamethylenetetramine, and isophoronediamine Polyamines
  • triethanolamine isopropanolamine, diethanolamine, diisopropanolamine, ⁇ , ⁇ , ⁇ ,, ⁇ '—tetra (j8-hydroxyethyl) ethyleneamine, N, N, N, ,, N' — Tetra (] 3-hydroxypropyl) ethylenediamine, N, N, N ' Rokishechiru)
  • Echirenjiamin such as diethylenetriamine, hexamethylenediamine, triethylenetetramine, and polyoxypropyleneamine
  • aromatic or alicyclic such as
  • adipic dihydrazide sepatin dihydrazide, isophthalic dihydrazide, 1,3-bis (hydrazino force potyl) 1-5-isoprop ⁇ hydantoin, eicosane diacid dihydrazide, hydroquinone diglycol-monolic dihydrazide, Dihydrazide compounds such as resorcinol diglycolic acid dihydrazide, .4,4, ethylidenebisphenol diglycolic acid dihydrazide; dicyandiamide; 4,4,1 diaminodiphenyl sulfone; imidazoles such as imidazole and 2- ⁇ -heptandecyl imidazole Compounds; melamine; benzoguanamine; ⁇ , N 'dialkyl urea compounds; ⁇ , ⁇ , dialkyl thiourea compounds;' 'diaminodiphenylmethane, diaminobi
  • aliphatic polyamines for example, dimethylaminopropylamine, getylaminopropylamine, dipropylaminopropylamine, dibutylaminopropylamine, dimethylaminoethylamine, getyl).
  • cyclic amines or aromatic polyamines having at least one NH 2 or NH group cyclic amines or aromatic polyamines having at least one NH 2 or NH group
  • NCO l / l ⁇ l of NH 2 and Z or NHZ (c). 2 and selected so that, at room temperature to 160 with an aromatic hydrocarbon, an alcohol, in a solvent such as Keton ° C] or the above-mentioned aliphatic polyamine (a) and amine
  • an epoxide compound (d) bisphenol A, bisphenol F, bisphenole S, hexahydrobisphenol A, force teconeole, resorcinol, trihydroxybiphenyl, benzophenone, hydroquinone, tetramethybisphenol Glycidyl ether obtained by reacting polychlorinated phenols such as ⁇ with epichlorohydrin; epiclorhydrin with aliphatic polyhydric alcohols such as glycerin, neopentinole glycolone, ethylene glycolone and polyethylene glycol Polyglycidyl ether obtained by the reaction; glycidyl ether ester obtained by reacting epichlorohydrin with a hydroxycarboxylic acid such as p-benzobenzoic acid and oxynaphthoic acid; phthalenoic acid, isophthalic acid, and tetrahydrophthalic acid , Command tetrahydrophthalic acid,
  • one or two or more selected from the group of the above-mentioned aliphatic polyamines, cyclic amines or aromatic polyamines and an epoxy conjugate for example, one to two epoxy groups in a molecule
  • a bisphenol-type epoxy resin, a novolak-type epoxy resin, a polyester-type epoxy resin, a polyether-type epoxy resin, or the like having a phenolic compound (eg, a phenolic resin, a resole-novolak resin) and / or A polycarboxylic acid conjugate (for example, adipic acid, sebacic acid, dodecanoic acid, azelaic acid, etc.) reacted and inactivated by masking an amino group [here, usually, the amino group of polyamine
  • the addition reaction of the epoxy group of the epoxy compound is performed in an amount of 0.7 to 1.5 equivalents to 1 equivalent, and The active amino groups are masked by reacting 0.04 to 0.5 parts by weight of the phenol compound or poly
  • the amount of these curing agents to be used may usually be selected so as to be 1.0 to 3.0 equivalents to the NCO of the blocked urethane prepolymer. .
  • thermosetting composition according to the present invention is composed of a system in which the above-mentioned acrylic resin particles, a plasticizer, a filler, a blocked urethane prepolymer and a curing agent are blended, and these are mixed together.
  • the weight ratio between the acrylic resin particles and the blocked urethane prepolymer is usually selected to be 20 / :! to 1/20. If the amount of the blocked urethane prepolymer exceeds the upper limit described above, the workability and application workability are impaired, such as the deterioration of the flow characteristics such as viscosity and viscosity related to the workability, which is a feature of plastisol. On the other hand, when the value is below the above lower limit, the strength and elongation properties of the stiffened product may not be as desired, and the adhesion to the substrate tends to be impaired.
  • a moisture absorbent such as calcium oxide and molecular sieves
  • a denaturing agent organic bentonite, fumed silica, aluminum stearate, metal soap, castor oil derivative, etc.
  • a stabilizer 2,6-di-tert-butyltin 4-methylphenyl, 2,2-methylene-bis (4-methyl-16-tert-butylphenol), nickel dibutyldithiocarbamate]
  • curing accelerator (dibutyl) Tin dilaurate, lead octoate, bismuth octoate, etc.), solvents (high-boiling hydrocarbon solvents such as naphtha, paraffin), and epoxy resins may be appropriately selected and added.
  • the polyol component and the polyisocyanate compound (MD I) in the parts by weight shown in Table 1 below were reacted at 80 ° C for 5 hours so as to become NCO / OH-2.2, respectively, to form a NCO-urethane prepolymer having a terminal NCO.
  • the indicated weight parts of methylethyl ketoxime are reacted at 50 ° C. for 5 hours in the presence of a catalyst to obtain No. 1 to 5 blocked urethane prepolymers (No. 5 corresponds to the present invention).
  • the polyol components used are as follows.
  • thermosetting composition of the present invention sufficiently adheres to painted surfaces and electrodeposited painted surfaces, and is useful mainly as a body sealer used in an automobile assembly line. Furthermore, it can be used as an undercoat for automobiles and other coating materials and adhesives such as metal materials.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

La présente invention concerne une composition thermodurcissable qui présente en particulier, une élongation modérée et une résistance et une dureté excellentes, et qu'on peut utiliser comme joints et comme sous couches de carrosserie d'automobile. Cette composition comprend: un sol acrylique comprenant des particules de résine acryliques, un plastifiant et une charge; un ou plusieurs prépolymères uréthane à terminaison isocyanate séquencés obtenus par réaction d'un ou de plusieurs polyols avec un excédent de produit d'étanchéité polyisocyanate; et un durcisseur de ces composés. Cette invention est caractérisée par le fait qu'au moins une partie des polyols utilisés dans ces polymères uréthane à terminaison isocyanate séquencés est représentée par un polyol polymère ou qu'au moins une partie des polymères uréthane à terminaison isocyanate séquencés est représentée par un polymère uréthane à terminaison isocyanate séquencé obtenu par réaction d'un polyol polymère avec un excédent de produit d'étanchéité polyisocyanate.
PCT/JP2000/003119 2000-05-16 2000-05-16 Composition thermodurcissable WO2001088008A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/003119 WO2001088008A1 (fr) 2000-05-16 2000-05-16 Composition thermodurcissable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/003119 WO2001088008A1 (fr) 2000-05-16 2000-05-16 Composition thermodurcissable

Publications (1)

Publication Number Publication Date
WO2001088008A1 true WO2001088008A1 (fr) 2001-11-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004050739A1 (fr) * 2002-12-02 2004-06-17 Kyoeisha Chemical Co., Ltd. Composition de resine urethane durcissable
JP2020023641A (ja) * 2018-08-08 2020-02-13 パーカーアサヒ株式会社 アクリルゾル組成物
CN112080185A (zh) * 2020-09-29 2020-12-15 湖北奥斯鸣环保科技有限公司 一种水性聚氨酯工业漆及其制备方法
CN113278409A (zh) * 2021-06-22 2021-08-20 西南石油大学 一种高温酸化缓蚀剂

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118948A (en) * 1979-03-08 1980-09-12 Sanyo Chem Ind Ltd Plastisol composition
JPS5978279A (ja) * 1982-10-28 1984-05-07 Sanyo Chem Ind Ltd プラスチゾル組成物
JPS59120651A (ja) * 1982-12-27 1984-07-12 Sanyo Chem Ind Ltd プラスチゾル組成物
JPH0286641A (ja) * 1988-09-22 1990-03-27 Sanyo Chem Ind Ltd プラスチゾル組成物
US5155154A (en) * 1984-11-22 1992-10-13 Dr. Alois Stankiewicz Gmbh Polyvinyl chloride-free plastisol and its use
JPH0931412A (ja) * 1995-07-24 1997-02-04 Sanyo Chem Ind Ltd ウレタン塗料用樹脂組成物
JPH10168266A (ja) * 1996-12-09 1998-06-23 Kyoeisha Chem Co Ltd プラスチゾル組成物

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118948A (en) * 1979-03-08 1980-09-12 Sanyo Chem Ind Ltd Plastisol composition
JPS5978279A (ja) * 1982-10-28 1984-05-07 Sanyo Chem Ind Ltd プラスチゾル組成物
JPS59120651A (ja) * 1982-12-27 1984-07-12 Sanyo Chem Ind Ltd プラスチゾル組成物
US5155154A (en) * 1984-11-22 1992-10-13 Dr. Alois Stankiewicz Gmbh Polyvinyl chloride-free plastisol and its use
JPH0286641A (ja) * 1988-09-22 1990-03-27 Sanyo Chem Ind Ltd プラスチゾル組成物
JPH0931412A (ja) * 1995-07-24 1997-02-04 Sanyo Chem Ind Ltd ウレタン塗料用樹脂組成物
JPH10168266A (ja) * 1996-12-09 1998-06-23 Kyoeisha Chem Co Ltd プラスチゾル組成物

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004050739A1 (fr) * 2002-12-02 2004-06-17 Kyoeisha Chemical Co., Ltd. Composition de resine urethane durcissable
JP2020023641A (ja) * 2018-08-08 2020-02-13 パーカーアサヒ株式会社 アクリルゾル組成物
CN112080185A (zh) * 2020-09-29 2020-12-15 湖北奥斯鸣环保科技有限公司 一种水性聚氨酯工业漆及其制备方法
CN113278409A (zh) * 2021-06-22 2021-08-20 西南石油大学 一种高温酸化缓蚀剂
CN113278409B (zh) * 2021-06-22 2022-04-29 西南石油大学 一种高温酸化缓蚀剂

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