CN108299795A - A kind of epoxy resin foam material and preparation method thereof - Google Patents

A kind of epoxy resin foam material and preparation method thereof Download PDF

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Publication number
CN108299795A
CN108299795A CN201711380157.1A CN201711380157A CN108299795A CN 108299795 A CN108299795 A CN 108299795A CN 201711380157 A CN201711380157 A CN 201711380157A CN 108299795 A CN108299795 A CN 108299795A
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China
Prior art keywords
parts
epoxy resin
foam material
resin foam
chemical foaming
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CN201711380157.1A
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Inventor
蔡正杰
张睿
汪华月
李召磊
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ZHEJIANG LIANYANG NEW MATERIAL Co Ltd
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ZHEJIANG LIANYANG NEW MATERIAL Co Ltd
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Priority to CN201711380157.1A priority Critical patent/CN108299795A/en
Publication of CN108299795A publication Critical patent/CN108299795A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
    • C08J9/008—Nanoparticles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0085—Use of fibrous compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
    • C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/06—Elements
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    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

The invention discloses a kind of epoxy resin foam materials and preparation method thereof, according to the mass fraction, including following component, 40 60 parts of epoxy resin, 20 30 parts of polyether polyol, 10 35 parts of curing agent, 5 10 parts of glass fibre, 5 10 parts of Carbon fibe, 0.5 10 parts of nano inoganic particle, 25 parts of compound rare-earth, 0.05 5 parts of chemical foaming agent, 1 10 parts of toughener, 25 parts of equal infusion, 25 parts of initiator.The problems such as epoxy resin foam material and preparation method thereof solves difficult forming present in traditional chemical foaming two-step process, chemical foaming agent is single and apparent density is big, and energy consumption is big.

Description

A kind of epoxy resin foam material and preparation method thereof
Technical field：
The present invention relates to a kind of epoxy resin foam materials and preparation method thereof.
Background technology：
Epoxy foam material has preferable thermal stability, mechanical property, insulation performance, heat-proof quality and lightweight etc. excellent Point has been widely used in the fields such as automobile, electronics embedding, aircraft product, ship outer casing.The preparation method of epoxy foam material Mainly there are physical blowing method, chemical blowing process and hollow microsphere curing molding method.First two method be suitable for prepare low-density (≤ 0.06g/cm3) and middle density (0.06-0.32g/cm3) expanded material, and high density expanded material mostly uses a kind of last method It prepares.The epoxy foam material prepared using chemical blowing process, general abscess-size is larger, and distribution of cells is also uneven, passes through The viscosity that pre-reaction increases system can be such that cell diameter reduces, but the apparent density of material will increase, and be generally difficult to make It is standby go out the uniform microcellular foam material of abscess.In addition, the viscosity of excessive increase system can so that epoxy resin flows are poor again, Excessive air bubble is readily incorporated when molding so that there are larger airports in product, influence the quality of product, and the temperature that foams Degree is high, and energy consumption is big.Thus, exploitation is a kind of convenient and simple, is readily transported, is easy to molding, abscess is small, cell density is big, apparent close Spend small, blowing temperature is low, the method for the epoxy resin microcellular foam material of being capable of large-scale production is of great significance.
Invention content：
The technical problem to be solved by the invention is to provide a kind of epoxy resin foam materials and preparation method thereof, with solution Certainly traditional chemical foams present in two-step process, difficult forming, chemical foaming agent is single and apparent density is big, production The problems such as energy consumption is big.
Technical solution of the invention is to provide a kind of epoxy resin foam material, according to the mass fraction, including it is following Ingredient,
40-60 parts of epoxy resin, 20-30 parts of polyether polyol, 10-35 parts of curing agent, 5-10 parts of glass fibre, carbon fiber 5-10 parts, 0.5-10 parts of nano inoganic particle, 2-5 parts of compound rare-earth, 0.05-5 parts of chemical foaming agent, 1-10 parts of toughener, 2-5 parts of infusion, 2-5 parts of initiator.
Preferably, according to the mass fraction, including following component, 50 parts of epoxy resin, 21 parts of polyether polyol, curing agent 20 parts, 5 parts of glass fibre, 10 parts of carbon fiber, 0.5 part of nano inoganic particle, 5 parts of compound rare-earth, 0.5 part of chemical foaming agent, increase Tough dose 2 parts, 2 parts of equal infusion, 2 parts of initiator.
Preferably, nano inoganic particle is any or several in nano silicon dioxide, nano imvite, nano-calcium carbonate Kind.
Preferably, chemical foaming agent is in sodium bicarbonate, 4,4- oxobenzenesulfonyl hydrazide, azodicarbonamide, silicone oil It is any one or several.
Preferably, compound rare-earth is made of lanthanum, cerium, praseodymium, neodymium, ytterbium, lutetium and scandium element.
Preferably, initiator is the mixture of stannous octoate and triethylene diamine.
Another technical solution of the present invention is to provide a kind of preparation method of epoxy resin foam material, takes epoxy Resin, polyether polyol, auxiliary curing agent, nano inoganic particle, compound rare-earth, glass fibre, carbon fiber, auxiliary curing agent, toughening Agent precuring at normal temperatures, is then milled into powder, then is warmed to 55 DEG C and that chemical foaming agent, equal infusion, initiator is added is fast The lower foaming 30-280min moldings of speed stirring.
The beneficial effects of the invention are as follows：Solve difficult forming present in traditional chemical foaming two-step process, chemistry hair The problems such as infusion is single and apparent density is big, and energy consumption is big.
Specific implementation mode：
The invention will be further described With reference to embodiment：
A kind of epoxy resin foam material, according to the mass fraction, including following component, 50 parts of epoxy resin, polyether polyols 21 parts of alcohol, 20 parts of curing agent, 5 parts of glass fibre, 10 parts of carbon fiber, 0.5 part of nano inoganic particle, 5 parts of compound rare-earth, chemistry hair 0.5 part of infusion, 2 parts of toughener, 2 parts of equal infusion, 2 parts of initiator.Wherein, nano inoganic particle is nano silicon dioxide, nanometer It is any one or several in montmorillonite, nano-calcium carbonate；Chemical foaming agent is sodium bicarbonate, 4,4- oxobenzenesulfonyl hydrazide, azo It is any one or several in diformamide, silicone oil；Compound rare-earth is made of lanthanum, cerium, praseodymium, neodymium, ytterbium, lutetium and scandium element；Initiator is The mixture of stannous octoate and triethylene diamine.
A kind of preparation method of epoxy resin foam material, extracting epoxy resin, polyether polyol, auxiliary curing agent, nanometer nothing The precuring at normal temperatures of machine particle, compound rare-earth, glass fibre, carbon fiber, auxiliary curing agent, toughener, is then milled into powder, It is warmed to 55 DEG C again and the quickly lower foaming 30-280min moldings of stirring of chemical foaming agent, equal infusion, initiator are added.
It is single that the present invention solves difficult forming, chemical foaming agent present in traditional chemical foaming two-step process, with And the problems such as apparent density is big, and energy consumption is big.Convenient formation, uniform in foaming, apparent density are big, energy consumption is few.

Claims (7)

1. a kind of epoxy resin foam material, it is characterised in that：According to the mass fraction, including following component, epoxy resin 40-60 Part, 20-30 parts of polyether polyol, 10-35 parts of curing agent, 5-10 parts of glass fibre, 5-10 parts of carbon fiber, nano inoganic particle 0.5-10 parts, 2-5 parts of compound rare-earth, 0.05-5 parts of chemical foaming agent, 1-10 parts of toughener, infusion 2-5 parts equal, initiator 2-5 Part.
2. epoxy resin foam material according to claim 1, it is characterised in that：According to the mass fraction, including below at Point, 50 parts of epoxy resin, 21 parts of polyether polyol, 20 parts of curing agent, 5 parts of glass fibre, 10 parts of carbon fiber, nano inoganic particle 0.5 part, 5 parts of compound rare-earth, 0.5 part of chemical foaming agent, 2 parts of toughener, 2 parts of equal infusion, 2 parts of initiator.
3. epoxy resin foam material according to claim 1, it is characterised in that：Nano inoganic particle is nanometer titanium dioxide It is any one or several in silicon, nano imvite, nano-calcium carbonate.
4. epoxy resin foam material according to claim 1, it is characterised in that：Chemical foaming agent be sodium bicarbonate, 4, It is any one or several in 4- oxobenzenesulfonyl hydrazide, azodicarbonamide, silicone oil.
5. epoxy resin foam material according to claim 1, it is characterised in that：Compound rare-earth by lanthanum, cerium, praseodymium, neodymium, Ytterbium, lutetium and scandium element composition.
6. epoxy resin foam material according to claim 1, it is characterised in that：Initiator is stannous octoate and triethylene The mixture of diamines.
7. a kind of preparation method of epoxy resin foam material according to claim 1, it is characterised in that：Take asphalt mixtures modified by epoxy resin Fat, polyether polyol, auxiliary curing agent, nano inoganic particle, compound rare-earth, glass fibre, carbon fiber, auxiliary curing agent, toughener Then precuring at normal temperatures is milled into powder, then be warmed to 55 DEG C and that chemical foaming agent, equal infusion, initiator is added is quick The lower foaming 30-280min moldings of stirring.
CN201711380157.1A 2017-12-20 2017-12-20 A kind of epoxy resin foam material and preparation method thereof Pending CN108299795A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101880442A (en) * 2010-08-03 2010-11-10 贵州凯科特材料有限公司 Epoxy resin and nano inorganic particle compounded foam material and preparation method thereof
CN103992620A (en) * 2014-05-29 2014-08-20 贵州凯科特材料有限公司 Microcellular foaming epoxy resin matrix material with high performance and preparation method thereof
CN104497483A (en) * 2014-12-15 2015-04-08 贵州省材料产业技术研究院 Lightweight epoxy resin microcellular foam material and preparation method thereof
US20150183987A1 (en) * 2013-12-31 2015-07-02 Taiwan Union Technology Corporation Resin composition and uses of the same
CN105670180A (en) * 2016-04-12 2016-06-15 桂林舒康建材有限公司 Wood plastic clothes rack and preparation technology thereof
CN105924902A (en) * 2016-05-16 2016-09-07 贵州省材料产业技术研究院 Thermally-expandable solid epoxy resin microcellular foam material and preparation method thereof
CN106519584A (en) * 2016-12-13 2017-03-22 苏州陈恒织造有限公司 Compression-resistant high-temperature-resistant film and preparation method thereof
CN106633656A (en) * 2016-12-21 2017-05-10 贵州凯科特材料有限公司 Preparation method of microcellular foaming epoxy resin-based material under lower viscosity
CN107226996A (en) * 2017-05-27 2017-10-03 江苏省江南新型复合研磨材料及制品工程技术研究中心有限公司 A kind of epoxy resin foam material base material and its preparation technology

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101880442A (en) * 2010-08-03 2010-11-10 贵州凯科特材料有限公司 Epoxy resin and nano inorganic particle compounded foam material and preparation method thereof
US20150183987A1 (en) * 2013-12-31 2015-07-02 Taiwan Union Technology Corporation Resin composition and uses of the same
CN103992620A (en) * 2014-05-29 2014-08-20 贵州凯科特材料有限公司 Microcellular foaming epoxy resin matrix material with high performance and preparation method thereof
CN104497483A (en) * 2014-12-15 2015-04-08 贵州省材料产业技术研究院 Lightweight epoxy resin microcellular foam material and preparation method thereof
CN105670180A (en) * 2016-04-12 2016-06-15 桂林舒康建材有限公司 Wood plastic clothes rack and preparation technology thereof
CN105924902A (en) * 2016-05-16 2016-09-07 贵州省材料产业技术研究院 Thermally-expandable solid epoxy resin microcellular foam material and preparation method thereof
CN106519584A (en) * 2016-12-13 2017-03-22 苏州陈恒织造有限公司 Compression-resistant high-temperature-resistant film and preparation method thereof
CN106633656A (en) * 2016-12-21 2017-05-10 贵州凯科特材料有限公司 Preparation method of microcellular foaming epoxy resin-based material under lower viscosity
CN107226996A (en) * 2017-05-27 2017-10-03 江苏省江南新型复合研磨材料及制品工程技术研究中心有限公司 A kind of epoxy resin foam material base material and its preparation technology

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Application publication date: 20180720