CN108239369A - A kind of neutrality phenolic foam and preparation method thereof - Google Patents
A kind of neutrality phenolic foam and preparation method thereof Download PDFInfo
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- CN108239369A CN108239369A CN201611222924.1A CN201611222924A CN108239369A CN 108239369 A CN108239369 A CN 108239369A CN 201611222924 A CN201611222924 A CN 201611222924A CN 108239369 A CN108239369 A CN 108239369A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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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
- C08J9/12—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 physical blowing agent
- C08J9/14—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 physical blowing agent organic
- C08J9/141—Hydrocarbons
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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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
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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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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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
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
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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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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Abstract
The present invention provides a kind of neutral phenolic foam, and the raw material composition of the neutrality phenolic foam is：100 parts by weight of thermosetting phenolic resin, 2 to 5 parts by weight of surfactant, 3 to 13 parts by weight of foaming agent, 0.5 to 3 parts by weight of melamine, 1.5 to 5 parts by weight of acid as curing agent.The present invention also provides the preparation methods of above-mentioned neutral phenolic foam, first mix thermosetting phenolic resin, surfactant, foaming agent；It adds acid as curing agent to be uniformly mixed, mixture is made；Mixture is foamed in the environment of microwave.Neutral phenolic foam prepared by the present invention, formula is rationally and preparation process is simple, dosage at low cost, substantially reducing acidulant；Prepared phenolic foam will not cause to corrode to the building surface being in contact with it or metal.
Description
Technical field
The present invention relates to phenolic foam field, more particularly to a kind of neutral phenolic foam and preparation method thereof.
Background technology
In recent years, phenol formaldehyde foam penetrated with its resistance to thermal insulation, fire retardant self-extinguishment, fire-resistance flame, low toxicity so that it uses field
Constantly expanding.But the problem of one can not be ignored existing for phenolic foam product is, since its curing agent used is
Organic or inorganic acids, so phenolic foam is typically all in middle strong acidity, for pH value between 1 to 4, this will be to compound
Surface material on phenolic foam, especially metal faced material generate stronger corrosion, greatly reduce phenolic aldehyde bubble
The use scope of foam plastic products.Before this, have and directly prepared using alkaline foaming agent (sodium carbonate, sodium bicarbonate, magnesium carbonate etc.)
The report of neutral phenolic foam, however according to the thinking, often when acid as curing agent is added in and stirred, acid at once with alkalinity
Foaming agent chemically reacts so that resin mixture has little time to stir evenly with regard to foamed solidification, and foam process is difficult to control.
Chinese patent CN1613897 discloses a kind of sealed cell toughening foamed material and preparation method.Its synthesis modification phenolic aldehyde tree
The phenol and formaldehyde mole ratio of fat are 1: 1.30 to 2.50, and modified additive is silicon intermediate, ester type compound, ammoniac compounds；
Its component is phenol, formaldehyde, catalyst, among silicon, ammoniac compounds and ester type compound；Foaming formulation is resin, surface is lived
Property agent, foaming agent, auxiliary curing agent and curing agent.By each component mixing, reaction during preparation, Ammonia chemical combination and ester type compound are added in
Be dehydrated to obtain modified resin, the mixing such as resin added in after curing agent heating cure to obtain the final product, using special chemical toughening method and
Marvellous auxiliary curing agent is separately added into three classes modified additive, makees foaming agent using alkane, no global greenhouse effect coefficient obtains
The special sealed cell toughening foamed material of structure solves the problems, such as to hinder phenol formaldehyde foam development, final phenol formaldehyde foam closed pore
Rate is less than greatly 85%, and brittleness is less than 25%, and thermal conductivity factor is less than 0.025W/mk, and the popularization for being conducive to phenolic foam should
With.
In the patent of Publication No. CN102558757A, alkaline slow releasing type microcapsules are added in, utilize what is released in capsule
With remaining acid in phenolic foam in alkali metal salt, neutrality phenolic foam is made.It is wrapped up on alkali metal particles surface
One layer of capsule, while also improve the manufacturing cost of phenol formaldehyde foam.
In the patent of Publication No. CN102286188A, mixed using thermoplastic phenolic resin and thermosetting phenolic resin,
Cure thermoplastic phenolic resin with hexa, add in a small amount of acid curing thermosetting phenolic resin, neutrality phenolic aldehyde bubble is made
Foam.Cure thermoplastic phenolic resin using hexa at normal temperatures and pressures, it is time-consuming longer, and hexa is easy
It is reacted with acid curing agent.
To sum up, at present there is an urgent need for a kind of novel operating procedure is easily controllable, excellent physical properties, convenient for large-scale production and
Neutral phenolic foam at low cost.
Invention content
In order to solve the above technical problems, the invention is realized in this way：
A kind of neutrality phenolic foam, the raw material composition of the neutrality phenolic foam are：Thermosetting phenolic resin 100
Parts by weight, 2 to 5 parts by weight of surfactant, 3 to 13 parts by weight of foaming agent, 0.5 to 3 parts by weight of melamine, acid as curing agent
1.5 to 5 parts by weight.
Thermosetting phenolic resin (thermosetting phenolic resin that can be foamed) please enumerate the specific substance of 3 effects.It may
It causes unintelligible, influences to authorize.
The advantages of thermosetting resin its molecular structure is build, it includes most condensation resin, thermosetting resin be
Heat resistance is high, and compression is unlikely to deform.The drawback is that mechanical performance is poor.Thermosetting resin has phenolic aldehyde, epoxy, amino, unsaturation
Polyester and silicon ether resin etc..
Thermosetting phenolic resin is a kind of resin, is stablized, heat-resisting, fire-retardant, electrical insulation capability is good.Thermosetting phenolic resin has
There is very strong wetting capacity, processability is good, and bulk density is big, and the porosity is low, and for refractory product, the resin is at 15 DEG C -20
It is mainly dimensionally stable that three months Bakeland advantages can be kept at DEG C, and heat-resisting, fire-retardant, electrical insulation capability is good, acid resistance
By force, it is mainly used in a variety of industries such as transport service, construction industry, army's cause, mining industry, is widely used.For example, phenolic aldehyde-butyronitrile,
Phenolic aldehyde-acetal, phenolic aldehyde-epoxy, phenolic aldehyde-epoxy-acetal, phenolic aldehyde-nylon etc..
Melamine is blowing promotor.
The performance of acids curing agent is mainly controlled with its physical and chemical performance index.Its main physical and chemical performance includes：Trip
From acid content, total acidity, density, viscosity, water insoluble matter content etc..And free acid content, total acidity are highly important indexs.
The present invention only need to use a small amount of acid that foaming raw material are adjusted to faintly acid (near neutral) under conditions of microwave
It is or neutral, it is possible to smoothly foaming.Phenolic foam prepared by the present invention, there is no rotten when the remaining acid in foam
Metal faced material is lost, extends the use scope of phenolic foam product.
Preferably, the solid content of the thermosetting phenolic resin is：75% to 85%；The thermosetting phenolic at 25 DEG C
Resin viscosity is 1000cp to 20000cp.
Further, the solid content of the thermosetting phenolic resin is：78% to 85%, the thermosetting property phenol at 25 DEG C
Urea formaldehyde viscosity is 2000cp to 10000cp.
Preferably, the surfactant is selected from silicone oil or tween.
Tween (Tween) removes water sorbierite for polyoxyethylene sorbitan monolaurate and a part of polyoxyethylene pair
The mixture of monolaurate.It is foam stabiliser.Effect and purposes：For sapn (Span, Span) and epoxy
The condensation product of ethane, due to there is more one polyoxyethylene groups of hydrophilic radical in its molecule, therefore hydrophily is strong, for it is a kind of it is non-from
Subtype detergent.Frequently as oil-in-water (O/W) type emulsifier；It can be closed with other emulsifiers such as sldium lauryl sulfate or spans
With the stability of emulsion can be increased.Also it can make the solubilizer of some drugs.
Further, the foaming agent is selected from pentane class or hexane class.
Further, the acid as curing agent is selected from inorganic acid or organic acid.
Further, the inorganic acid is selected from least one of phosphoric acid, sulfuric acid, oxalic acid, hydrochloric acid.
Further, the organic acid is selected from least one of p-methyl benzenesulfonic acid, phenolsulfonic acid, pyrovinic acid.
The preparation method of above-mentioned neutral phenolic foam, first by thermosetting phenolic resin, surfactant, foaming agent
Mixing；It adds acid as curing agent to be uniformly mixed, mixture is made；Mixture is foamed in the environment of microwave.
Microwave refers to the electromagnetic wave that frequency is 300MHz~300GHz.
Preferably, the power of microwave is 500W to 1200W.
Further, by mixture at 50 DEG C to 80 DEG C microwave 8 minutes to 40 minutes.
The invention has the advantages that：
Microwave foaming that the present invention uses, the resin of high activity, a small amount of acid as curing agent are fully sent out in phenolic resin blend
After bubble, so as to which phenolic foam be made to avoid the surface material to being compounded on phenolic foam, especially in weakly acidic pH
Corrosion to metal faced material improves the use scope of phenolic foam product.
The neutral phenolic foam prepared according to the method described above is in the heat-insulated adiabatic, anti-flammability for ensureing phenolic foam
Under the premise of energy, pH value range can be controlled 4.5 to 6.5, and the pH value of traditional phenolic foam is between 1 to 4.
It can thus be seen that it can mitigate significantly to being compounded in phenol formaldehyde foam modeling by phenolic foam prepared by the method for the invention
Expect the corrosion of the surface material on surface, improve the use scope of phenolic foam product.It is prepared by this patent the method
Phenolic foam can be used in the fields such as oil, chemical industry, wall thermal insulating, central air conditioner blast tube system, refrigeration, especially
In terms of higher and higher wall thermal insulating is required to fire retardant performance, which will be than traditional peracidity phenol formaldehyde foam
Advantage with bigger.
The neutral phenolic foam formula of the present invention is rationally and preparation process is simple, at low cost, by synthesizing high activity
Resin substantially reduces the dosage of acidulant, coordinates microwave foaming technique, does not need to complicated working process；Prepared phenolic aldehyde
Foamed plastics not only remains the low heat conduction that convention acidic phenolic foam has, the performance of high fire-retardance, but also obtained
Phenol formaldehyde foam is in neutrality, and in use the building surface that be in contact with it or metal will not be caused to corrode.
Specific embodiment
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
It is explained in detail.
Embodiment 1
A kind of neutrality phenolic foam, the raw material composition of the neutrality phenolic foam are：Thermosetting phenolic resin 100
Parts by weight, the solid content of the thermosetting phenolic resin are：75%, the thermosetting phenolic resin viscosity is at 25 DEG C
1000cp；2 parts by weight of silicone oil surfactant, 3 parts by weight of foaming agent pentane class, 0.5 parts by weight of melamine, acid as curing agent phosphorus
Sour 1.5 parts by weight.
The preparation method of above-mentioned neutral phenolic foam, first by thermosetting phenolic resin, surfactant, foaming agent
Mixing；It adds acid as curing agent to be uniformly mixed, mixture is made；Mixture is foamed in the environment of microwave；Microwave
Power is 500W；By mixture at 50 DEG C microwave 40 minutes.
Embodiment 2
A kind of neutrality phenolic foam, the raw material composition of the neutrality phenolic foam are：Thermosetting phenolic resin 100
Parts by weight, the solid content of the thermosetting phenolic resin are：85%, the thermosetting phenolic resin viscosity is at 25 DEG C
20000cp；5 parts by weight of surface active agent tween, 13 parts by weight of foaming agent person's hexane class, 3 parts by weight of melamine, acid as curing agent
5 parts by weight of oxalic acid.
The preparation method of above-mentioned neutral phenolic foam, first by thermosetting phenolic resin, surfactant, foaming agent
Mixing；It adds acid as curing agent to be uniformly mixed, mixture is made；Mixture is foamed in the environment of microwave；Microwave
Power is 1200W；By mixture at 80 DEG C microwave 8 minutes.
Embodiment 3
A kind of neutrality phenolic foam, the raw material composition of the neutrality phenolic foam are：Thermosetting phenolic resin 100
Parts by weight, the solid content of the thermosetting phenolic resin are：78%, the thermosetting phenolic resin viscosity is at 25 DEG C
2000cp；2 parts by weight of silicone oil surfactant, 2 parts by weight of tween, 3 parts by weight of foaming agent pentane class, 3 parts by weight of hexane class, three
1 parts by weight of poly cyanamid, 2 parts by weight of acid as curing agent p-methyl benzenesulfonic acid.
The preparation method of above-mentioned neutral phenolic foam, first by thermosetting phenolic resin, surfactant, foaming agent
Mixing；It adds acid as curing agent to be uniformly mixed, mixture is made；Mixture is foamed in the environment of microwave；Microwave
Power is 700W；By mixture at 60 DEG C microwave 15 minutes.
Embodiment 4
A kind of neutrality phenolic foam, the raw material composition of the neutrality phenolic foam are：Thermosetting phenolic resin 100
Parts by weight, the solid content of the thermosetting phenolic resin are：80%, the thermosetting phenolic resin viscosity is at 25 DEG C
10000cp；1 parts by weight of silicone oil surfactant, 2 parts by weight of tween, 4 parts by weight of foaming agent pentane class, 5 parts by weight of hexane class,
2 parts by weight of melamine, 4 parts by weight of acid as curing agent pyrovinic acid.
The preparation method of above-mentioned neutral phenolic foam, first by thermosetting phenolic resin, surfactant, foaming agent
Mixing；It adds acid as curing agent to be uniformly mixed, mixture is made；Mixture is foamed in the environment of microwave；Microwave
Power is 900W；By mixture at 65 DEG C microwave 25 minutes.
Embodiment 5
A kind of neutrality phenolic foam, the raw material composition of the neutrality phenolic foam are：Thermosetting phenolic resin 100
Parts by weight, the solid content of the thermosetting phenolic resin are：83%, the thermosetting phenolic resin viscosity is at 25 DEG C
15000cp；3 parts by weight of surface active agent tween, 7 parts by weight of foaming agent pentane class, 4 parts by weight of hexane class, 2.5 weight of melamine
Measure part, 2 parts by weight of acid as curing agent oxalic acid, 2 parts by weight of pyrovinic acid.
The preparation method of above-mentioned neutral phenolic foam, first by thermosetting phenolic resin, surfactant, foaming agent
Mixing；It adds acid as curing agent to be uniformly mixed, mixture is made；Mixture is foamed in the environment of microwave；Microwave
Power is 1000W；By mixture at 70 DEG C microwave 35 minutes.
Embodiment 6
The composition quality proportioning of phenolic foam is：
Phenolic resin：200g, melamine 0.5, surfactant：6g, pentane foaming agent：9g, pyrovinic acid 4g.
Preparation process：At 25 DEG C, first phenol-formaldehyde A, melamine, surfactant, foaming agent are mixed, stirring is equal
It is even, acid as curing agent is then added in, is stirred evenly, then the mixture is injected into square dies (die size is：Long 200mm, it is wide
200mm, high 70mm) in, and mold is placed in 60 DEG C rapidly, 10min is kept to obtain cured phenolic aldehyde in the micro-wave oven of 700W steeping
Foam plastics.After tested, phenol formaldehyde foam density obtained is 58kg/m3, pH value is：6.
Embodiment 7
The composition quality proportioning of phenolic foam is：
Phenolic resin：200g, melamine 1.5, surfactant：8g, pentane foaming agent：8g, p-methyl benzenesulfonic acid 8g.
Preparation process：At 25 DEG C, first phenol-formaldehyde A, surfactant, foaming agent are mixed, stirred evenly, Ran Houjia
Enter acid as curing agent, stir evenly, then the mixture injected into square dies (die size is：Long 200mm, wide 200mm are high
In 80mm), and mold is placed in 50 DEG C rapidly, 20min is kept to obtain cured phenolic foam in the micro-wave oven of 500W.Through
Test, phenol formaldehyde foam density obtained are 72kg/m3, pH value is：5.
Embodiment 8
The composition quality proportioning of phenolic foam is：
Phenolic resin：200g, melamine 2.5, surfactant：10g, pentane foaming agent：13g, pyrovinic acid 3g.
Preparation process：At 25 DEG C, first phenol-formaldehyde A, melamine, surfactant, foaming agent are mixed, stirring is equal
It is even, acid as curing agent is then added in, is stirred evenly, then the mixture is injected into square dies (die size is：Long 200mm, it is wide
200mm, high 80mm) in, and mold is placed in 70 DEG C rapidly, 30min is kept to obtain cured phenolic aldehyde in the micro-wave oven of 1000W steeping
Foam plastics.After tested, phenol formaldehyde foam density obtained is 50kg/m3, pH value is：6.
The foregoing is merely the embodiment of the present invention, not thereby limit the scope of patent protection of the present invention, every utilization
The equivalent structure or equivalent flow shift that present specification is made directly or indirectly is used in other relevant technologies
Field is included within the scope of the present invention.
Claims (10)
1. a kind of neutrality phenolic foam, which is characterized in that the raw material of the neutrality phenolic foam, which forms, is：Thermosetting property phenol
100 parts by weight of urea formaldehyde, 2 to 5 parts by weight of surfactant, 3 to 13 parts by weight of foaming agent, 0.5 to 3 parts by weight of melamine,
1.5 to 5 parts by weight of acid as curing agent.
2. neutrality phenolic foam as described in claim 1, which is characterized in that consolidating for the thermosetting phenolic resin contains
It measures and is：75% to 85%；The thermosetting phenolic resin viscosity is 1000cp to 20000cp at 25 DEG C.
3. neutrality phenolic foam as claimed in claim 2, which is characterized in that the surfactant be selected from silicone oil or
Person's tween.
4. neutrality phenolic foam as claimed in claim 3, which is characterized in that the foaming agent be selected from pentane class or
Hexane class.
5. neutrality phenolic foam as claimed in claim 4, which is characterized in that the acid as curing agent be selected from inorganic acid or
Person's organic acid.
6. neutrality phenolic foam as claimed in claim 5, which is characterized in that the inorganic acid be selected from phosphoric acid, sulfuric acid,
At least one of oxalic acid, hydrochloric acid.
7. neutrality phenolic foam as claimed in claim 5, which is characterized in that the organic acid is selected to toluene sulphur
At least one of acid, phenolsulfonic acid, pyrovinic acid.
8. the preparation method of neutrality phenolic foam as described in claim 1, which is characterized in that first by thermosetting phenolic tree
Fat, surfactant, foaming agent mixing；It adds acid as curing agent to be uniformly mixed, mixture is made；By mixture microwave ring
It foams under border.
9. the preparation method of neutrality phenolic foam as claimed in claim 8, which is characterized in that the power of microwave is 500W
To 1200W.
10. the preparation method of neutrality phenolic foam as claimed in claim 9, which is characterized in that by mixture at 50 DEG C
Microwave 8 minutes to 40 minutes to 80 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611222924.1A CN108239369A (en) | 2016-12-27 | 2016-12-27 | A kind of neutrality phenolic foam and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611222924.1A CN108239369A (en) | 2016-12-27 | 2016-12-27 | A kind of neutrality phenolic foam and preparation method thereof |
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| CN108239369A true CN108239369A (en) | 2018-07-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054024A (en) * | 2018-08-09 | 2018-12-21 | 苏州思德新材料科技有限公司 | A kind of preparation method of the organic foam stabilizer of polyester form preparation |
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| JPH07148851A (en) * | 1993-11-30 | 1995-06-13 | F Tatsukuru:Kk | Production f foamed phenol frp molded product by microwave heating |
| CN1566206A (en) * | 2003-06-30 | 2005-01-19 | 张景园 | Neutral high-strength phenol formaldehyde foam plastic |
| CN102746612A (en) * | 2012-07-05 | 2012-10-24 | 同济大学 | Preparation method for halogen-free flame-retardant toughened phenolic foamed plastics |
| CN103865230A (en) * | 2014-04-02 | 2014-06-18 | 北京化工大学 | Phenolic foam prepared by microwave foaming |
| CN104559044A (en) * | 2014-12-30 | 2015-04-29 | 陕西师范大学 | Non-corrosive, low-density and high-strength phenolic foam |
| CN105199312A (en) * | 2015-11-05 | 2015-12-30 | 北京莱恩斯高新技术有限公司 | Neutral phenolic foam plastic and preparation method thereof |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07148851A (en) * | 1993-11-30 | 1995-06-13 | F Tatsukuru:Kk | Production f foamed phenol frp molded product by microwave heating |
| CN1566206A (en) * | 2003-06-30 | 2005-01-19 | 张景园 | Neutral high-strength phenol formaldehyde foam plastic |
| CN102746612A (en) * | 2012-07-05 | 2012-10-24 | 同济大学 | Preparation method for halogen-free flame-retardant toughened phenolic foamed plastics |
| CN103865230A (en) * | 2014-04-02 | 2014-06-18 | 北京化工大学 | Phenolic foam prepared by microwave foaming |
| CN104559044A (en) * | 2014-12-30 | 2015-04-29 | 陕西师范大学 | Non-corrosive, low-density and high-strength phenolic foam |
| CN105199312A (en) * | 2015-11-05 | 2015-12-30 | 北京莱恩斯高新技术有限公司 | Neutral phenolic foam plastic and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054024A (en) * | 2018-08-09 | 2018-12-21 | 苏州思德新材料科技有限公司 | A kind of preparation method of the organic foam stabilizer of polyester form preparation |
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