CN106589800B - A method of enhancing phenolic resin foamed board toughness with PET reclaimed materials - Google Patents
A method of enhancing phenolic resin foamed board toughness with PET reclaimed materials Download PDFInfo
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- 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
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/28—Chemically modified polycondensates
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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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- 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
- C08J2361/14—Modified phenol-aldehyde condensates
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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
Abstract
A method of enhancing phenolic resin foamed board toughness with PET reclaimed materials, is related to phenolic resin.A kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials that of low cost, toughness is high, free phenol and aldehyde are low, density is low with dusting is provided.It is that raw material prepares expandable phenolic resin performed polymer by phenol and paraformaldehyde；PET reclaimed materials after impurity and purification is dissolved in quaternary ammonium salt and phenol eutectic solvent, the phenol solution of PET reclaimed materials is obtained, adds expandable phenolic resin performed polymer, foaming agent, reinforcing agent and curing agent, up to phenolic resin foamed board after foamed solidification.
Description
Technical field
The present invention relates to phenolic resin, are related to a kind of method enhancing phenolic resin toughness with PET reclaimed materials.
Background technology
PET (polyethylene terephthalate) kind polyesters are widely used in human being's production and life, can be used as drinking
Expect packing containers, fiber-grade polyester, polyester film and the engineering plastics such as food etc..China's soft drink yield is with the year more than 20%
Equal growth rate is incremented by, and the PET bottle demand being packed for also is increased with 18% speed.It can not be kept away in PET polyester production process
It will produce waste product and leftover pieces etc. with exempting from；In addition, the waste generated after the use of PET polyester, such as with waste mineral water bottle number
Amount sharply increases, and a considerable number of PET reclaimed materials can be obtained from these waste products, leftover pieces and waste.The natural degradation of PET
Speed is slow, and there are degradations in 30~40 years only 50% in the environment that humidity is 45%~100%, temperature is 20 DEG C, seriously
It pollutes environment and causes greatly to waste.In face of a large amount of PET reclaimed materials, how to realize that it is recycled and have become one urgently
The project of solution.
Phenolic resin foamed board material is mainly used for architecture exterior wall insulating materials, compared with other thermal insulation materials, prepares letter
It is single, good flame retardation effect；But poor toughness, the brittleness of phenolic foam sheet are big, and plank not impact resistance is easy cracking, dusting.It is preparing
In the process, there are a large amount of free phenol and free aldehyde that cannot be fully cured and remain in the product, the performance and human body to product
Harm is big.These disadvantages of phenolic foam sheet limit its application in exterior-wall heat insulation market, therefore there is an urgent need to improve this
The toughness of material reduces the content of free phenol and aldehyde.Furthermore present phenolic foam sheet manufacturer is numerous, and dog-eat-dog has
Effect ground, which reduces production cost, becomes the key for improving product competitiveness in the market.
Chinese patent CN104193933A discloses a kind of preparation method of the phenolic resin of toughening, including：By paraformaldehyde,
Phenol and 1- methyl -4- [(dimethylamino) methyl] -2- [(3,4- difluorophenyl) sulfidomethyl] bromo- 1H- indoles-of -5- hydroxyls -6-
3- carboxylate hydrochlorides are added three-necked flask, are then respectively adding N-N dimethylethanolamines and glycerine, three-necked flask is set
In oil bath pan, condensed water, blender are opened, temperature rises to 65 DEG C, and stirring is until paraformaldehyde melts completely, then by temperature
98 DEG C are risen to, 2h is kept, mixture is cooled to 60 DEG C with cold bath immediately later, urea is added, is removed free in resin
Phenol and free formaldehyde keep duration 30min, then cool to room temperature, and the phenol of pentane, silicone oil, 65 weight % is then added
Sulfonic acid aqueous solution and Tween 80, then stirred under conditions of 500rpm in high speed agitator 3 hours to get.The invention
The phenolic resin of toughening made from method has the mechanical property of enhancing, has broad prospects in commercial Application.
Chinese patent CN104327229A discloses a kind of toughening modifying phenolic resin, is prepared by following methods：(1) it prepares
Aromatic Polyester Polyols；(2) toughening modifying phenolic resin is prepared：Reaction kettle is added after first phenol is dissolved, then is added stage by stage
Formalin, basic catalyst adjust pH=9, and triphenyl phosphate or triphenyl phosphite or triphenyl borate is added certain
At a temperature of phenolic resin prepolymer is made, add Aromatic Polyester Polyols, react to obtain toughening modifying phenolic resin.The invention is adopted
Use Aromatic Polyester Polyols as intrinsic toughening agent phenol-formaldehyde resin modified, the phenol formaldehyde foam toughness of preparation is obviously improved, scaling-off small, pressure
Contracting intensity is high, and comprehensive mechanical property is good.
Invention content
It is an object of the invention in view of the foregoing defects the prior art has, provide, of low cost, toughness is high, free phenol
A kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials low with aldehyde, density is low with dusting.
The present invention includes the following steps：
1) it is that raw material prepares expandable phenolic resin performed polymer by phenol and paraformaldehyde；
2) the PET reclaimed materials after impurity and purification is dissolved in quaternary ammonium salt with phenol eutectic solvent, obtains the benzene of PET reclaimed materials
Phenol solution adds expandable phenolic resin performed polymer, foaming agent, reinforcing agent and curing agent that step 1) obtains, foamed solidification
Afterwards up to phenolic resin foamed board.
In step 2), the phenol solution of the PET reclaimed materials, expandable phenolic resin performed polymer, foaming agent, reinforcement
Agent, curing agent mass ratio can be：(10~30) ︰ (70~90) ︰ (2~10) ︰ (10~40)：(10~20)；The PET recycling
The recycling of waste after the waste product generated in PET polyester production process and leftover pieces and PET polyester uses can be used in material
Material；The preparation method of the quaternary ammonium salt and phenol eutectic solvent can be：Quaternary ammonium salt and phenol heating stirring are formed into eutectic
The mass percent of solvent, wherein quaternary ammonium salt and phenol is 75%~125%；The preparation of the phenol solution of the PET reclaimed materials
Method can be：By PET reclaimed materials, it is sliced into the tablet that size diameter is no more than 1cm after removal of impurities is handled, is added into quaternary ammonium
In salt and phenol eutectic solvent, up to the phenol solution of PET reclaimed materials after heating stirring；The PET reclaimed materials and quaternary ammonium salt
Mass ratio with phenol eutectic solvent can be that (temperature of 10~30) ︰ (50~120), the heating can be 50~120 DEG C.
The foaming agent can be selected from least one of pentane, n-hexane, petroleum ether etc.；The reinforcing agent can be selected from
Al(OH)3、Mg(OH)2At least one of Deng；The curing agent can be selected from p-methyl benzenesulfonic acid, xylene monosulfonic acid, to oxybenzene sulphur
At least one of acid, sulfuric acid, phosphoric acid etc..
All raw materials in the present invention can be bought or subsequently be made in market at home.
In the present invention, the mechanism of PET polyester-modified phenolic resins is：PET (polyethylene terephthalate) is by benzene
Dioctyl phthalate and two kinds of monomer polycondensations of ethylene glycol and obtain, not only containing rigid radicals such as phenyl ring in molecule segment, but also contain ethylene glycol
Etc. flexible compositions.In a heated condition, raw material phenol is the fine solvent of PET reclaimed materials, therefore PET and phenolic resin system
Compatibility is fine, without carrying out specially treated to it.After being dissolved in phenol, molecule segment depolymerization, terminal hydroxy group has very high
Reactivity, grafting can occur with the methylol in expandability phenolic aldehyde performed polymer or block copolymerization and react, to will be rigid
Benzene radicals and glycol group flexible be introduced into the structure of phenolic resin, fundamentally change the rigidity of phenolic resin
Molecular structure improves its toughness to reduce the brittleness of phenol formaldehyde foam.In addition, containing the benzene that rigidity is strong in the monomer of PET
Ring can equally play the fire-retardant effect similar with phenolic resin, and fatty long-chain plasticizing phenol formaldehyde is introduced compared with simple, the former
The flame retardant property of product will not be decreased obviously after certifiable toughening, better.
The eutectic solvent degradation PET reclaimed materials that the present invention is formed using quaternary ammonium salt and phenol, it is poly- using obtained PET
The catabolites such as the oligomer and monomer of ester are added in the phenolic resin performed polymer prepared for raw material by phenol and paraformaldehyde,
Cellular insulant is produced under the action of foaming agent and curing agent, to increase the toughness and intensity of phenolic resin foamed board material.
A kind of production method of the inexpensive toughening metlbond foam plank provided, PET reclaimed materials derives from a wealth of sources, cheap, reduces
Industrial cost, reduces pollution of the waste PET polyester to environment, also improves the intensity and toughness of phenolic aldehyde heat preserving plank, drops
The brittleness of low plank, while meeting the needs of skin construction.
One of the advantages of the present invention is, in a heated condition, raw material phenol is the fine solvent of PET reclaimed materials, therefore PET
It is fine with the compatibility of phenolic resin system, and terminal hydroxy group present in PET has very high reactivity, it can be pre- with phenolic aldehyde
The hydroxyl reaction of polymers is dehydrated to obtain polymer, to obtain the toughened copolymer object of chemical doping modification.In addition, the monomer of PET
In containing the strong phenyl ring of rigidity, can equally play the fire-retardant effect similar with phenolic resin, fatty long-chain is introduced compared with simple
Plasticizing phenol formaldehyde, the flame retardant property of product will not be decreased obviously after the former can guarantee toughening, better.
Advantages of the present invention second is that, using abundance and cheap PET reclaimed materials is to phenolic resin foamed board
Material carries out toughening, can alleviate increasing pet waste reserves, enhances the toughness of phenolic foam sheet product, and reducing should
The production cost of class product.
Specific implementation mode
Below in conjunction with specific embodiment, the invention will be further described, but not thereby limiting the invention.
Embodiment 1
Step 1：Weigh the NaOH aqueous solutions that 500 parts of phenol, 300 parts of paraformaldehydes, 36 parts of mass fractions are 20%.By benzene
Phenol is put into reaction kettle, is warming up to 70 DEG C and is melted, and while stirring, paraformaldehyde is added, keeps 30min；Sodium hydroxide is added
Solution stirs evenly.It increases temperature in reaction kettle and keeps temperature 30min to 100 DEG C, expandable phenolic resin pre-polymerization is made
Body.
Step 2：By 50 parts of choline chlorides and 50 parts of phenol are weighed, in 25 DEG C of heating after mixing, eutectic solvent is obtained.It will
Spare PET reclaimed materials is cut into the slice that diameter is no more than 1cm after cleaning, and is added in above-mentioned eutectic solvent, the two quality point
Several ratios are：PET is 20 parts, and eutectic solvent is 100 parts, is warming up to 50 DEG C of stirring 30min so that added PET material are complete
Portion is dissolved, and obtains the catabolites such as oligomer and the monomer of PET polyester (hereinafter referred to as PET degraded solutions).
Step 1 gained expandable phenolic resin performed polymer is added in another reaction kettle, is warming up to 100 DEG C, step 2 is added
The PET degraded solutions of gained, and reinforcing agent Al (OH) is added3, foaming agent pentane and p-methyl benzenesulfonic acid and sulfuric acid mixing
Acid as curing agent is mixed evenly, and injects preset board mould.Expandable phenolic resin performed polymer, is mended at PET degraded solutions
Strong agent Al (OH)3, foaming agent pentane, p-methyl benzenesulfonic acid and sulfuric acid the mass ratio of mixing acid as curing agent be 70 ︰, 10 ︰, 10 ︰, 4 ︰
10.50 ± 2 DEG C of 5~20min of mold temperature are kept, then heat to 70 ± 2 DEG C of 10~30min of maintenance, then be cooled to 50 ± 2 DEG C
5~20min is maintained, is finally cooled to 35 ± 2 DEG C, removal mold is to get phenolic resin foamed board, i.e. toughening modifying phenolic resin
Cystosepiment.
After testing, pore size distribution is uniform for gained toughening modifying phenolic resin foamed board, and rate of closed hole is high, and average pore size is 55~
90μm。
Embodiment 2
Step 1：Weigh the NaOH aqueous solutions that 500 parts of phenol, 300 parts of paraformaldehydes, 36 parts of mass fractions are 20%.By institute
It in standby phenol input reaction kettle, is warming up to 70 DEG C and melts, while stirring, add paraformaldehyde, keep 30min；It is added
Above-mentioned sodium hydroxide solution, stirs evenly.It increases temperature in reaction kettle and keeps temperature 30min to 100 DEG C, expandability is made
Phenolic resin performed polymer.
Step 2：50 parts of tetramethyl ammonium chlorides and 50 parts of phenol are weighed, in 25 DEG C of heating after mixing, obtain eutectic solvent.
Spare PET reclaimed materials is cut into the slice that diameter is no more than 1cm after cleaning, and is added in above-mentioned eutectic solvent, the two quality
The ratio of score is：PET is 20 parts, and eutectic solvent is 100 parts, is warming up to 50 DEG C of stirring 30min so that added PET material
All dissolvings, obtain PET degraded solutions.
Step 1 gained phenolic resin performed polymer is added in another reaction kettle, is warming up to 100 DEG C, is added obtained by step 2
PET degradation solutions, and reinforcing agent Al (OH) is added3, foaming agent normal hexane and the mixed acid of p-methyl benzenesulfonic acid and sulfuric acid solidification
Agent is mixed evenly, and injects preset board mould.Phenolic resin performed polymer, PET degraded solutions, reinforcing agent Al (OH)3、
The mass fraction ratio of the mixing acid as curing agent of foaming agent pentane, p-methyl benzenesulfonic acid and sulfuric acid is 70 ︰, 10 ︰, 10 ︰, 4 ︰ 10.
50 ± 2 DEG C of 5~20min of mold temperature are kept, then heat to 70 ± 2 DEG C of 10~30min of maintenance, then be cooled to 50
± 2 DEG C of 5~20min of maintenance, are then cooled to 35 ± 2 DEG C, removal mold is to get PET reclaimed materials toughening modifying phenol of the invention
Aldehyde foam board.
Embodiment 3
Step 1：Weigh the NaOH aqueous solutions that 500 parts of phenol, 300 parts of paraformaldehydes and 36 parts of mass fractions are 20%.It will
In standby phenol input reaction kettle, be warming up to 70 DEG C and melt, while stirring, add paraformaldehyde, keep 30min；Add
Enter above-mentioned sodium hydroxide solution, stirs evenly.It increases temperature in reaction kettle and keeps temperature 30min to 100 DEG C, being made can send out
Property phenolic resin performed polymer.
Step 2：50 parts of etamon chlorides and 50 parts of phenol are weighed, in 25 DEG C of heating after mixing, obtain eutectic solvent.
Spare PET reclaimed materials is cut into the slice that diameter is no more than 1cm after cleaning, and is added in above-mentioned eutectic solvent, the two quality
The ratio of score is：PET is 20 parts, and eutectic solvent is 100 parts, is warming up to 50 DEG C of stirring 30min so that added PET material
All dissolvings, obtain PET degraded solutions.
Step 1 gained phenolic resin performed polymer is added in another reaction kettle, is warming up to 100 DEG C, is added obtained by step 2
PET degraded solutions, and reinforcing agent Al (OH) is added3, foaming agent pentane and the mixed acid of p-methyl benzenesulfonic acid and sulfuric acid solidification
Agent is mixed evenly, and injects preset board mould.Phenolic resin performed polymer, PET degraded solutions, reinforcing agent Al (OH)3、
The mass fraction ratio of the mixing acid as curing agent of foaming agent pentane, p-methyl benzenesulfonic acid and sulfuric acid is 70 ︰, 10 ︰, 10 ︰, 4 ︰ 10.
50 ± 2 DEG C of 5~20min of mold temperature are kept, then heat to 70 ± 2 DEG C of 10~30min of maintenance, then be cooled to 50
± 2 DEG C of 5~20min of maintenance, are then cooled to 35 ± 2 DEG C, removal mold is to get PET reclaimed materials toughening modifying phenol of the invention
Aldehyde foam board.
Embodiment 4
Step 1：Weigh the NaOH aqueous solutions that 500 parts of phenol, 300 parts of paraformaldehydes, 36 parts of mass fractions are 20%.By institute
It in standby phenol input reaction kettle, is warming up to 70 DEG C and melts, while stirring, add paraformaldehyde, keep 30min；It is added
Above-mentioned sodium hydroxide solution, stirs evenly.It increases temperature in reaction kettle and keeps temperature 30min to 100 DEG C, expandability is made
Phenolic resin performed polymer.
Step 2：50 parts of tetrabutylammonium bromide are weighed, 50 parts of phenol obtain eutectic solvent in 25 DEG C of heating after mixing.
Spare PET reclaimed materials is cut into the slice that diameter is no more than 1cm after cleaning, and is added in above-mentioned eutectic solvent, the two quality
The ratio of score is：PET is 20 parts, and eutectic solvent is 100 parts, is warming up to 50 DEG C of stirring 30min so that added PET material
All dissolvings, obtain PET degraded solutions.
Step 1 gained phenolic resin performed polymer is added in another reaction kettle, is warming up to 100 DEG C, is added obtained by step 2
PET degraded solutions, and reinforcing agent Al (OH) is added3, foaming agent petroleum ether and the mixed acid of p-methyl benzenesulfonic acid and sulfuric acid solidification
Agent is mixed evenly, and injects preset board mould.Phenolic resin performed polymer, PET degraded solutions, reinforcing agent Al (OH)3、
The mass fraction ratio of the mixing acid as curing agent of foaming agent pentane, p-methyl benzenesulfonic acid and sulfuric acid is 70 ︰, 10 ︰, 10 ︰, 4 ︰ 10.
50 ± 2 DEG C of 5~20min of mold temperature are kept, then heat to 70 ± 2 DEG C of 10~30min of maintenance, then be cooled to 50
± 2 DEG C of 5~20min of maintenance, are then cooled to 35 ± 2 DEG C, removal mold is to get PET reclaimed materials toughening modifying phenol of the invention
Aldehyde foam board.
Embodiment 5
Step 1：Weigh the KOH aqueous solutions that 500 parts of phenol, 300 parts of paraformaldehydes, 36 parts of mass fractions are 20%.By institute
It in standby phenol input reaction kettle, is warming up to 70 DEG C and melts, while stirring, add paraformaldehyde, keep 30min；It is added
Above-mentioned potassium hydroxide solution, stirs evenly.It increases temperature in reaction kettle and keeps temperature 30min to 100 DEG C, expandability is made
Phenolic resin performed polymer.
Step 2：50 parts of choline chlorides are weighed, 50 parts of phenol obtain eutectic solvent in 25 DEG C of heating after mixing.It will wash
Spare PET reclaimed materials is cut into the slice that diameter is no more than 1cm after net, is added in above-mentioned eutectic solvent, the two mass fraction
Ratio be：PET is 20 parts, and eutectic solvent is 100 parts, is warming up to 50 DEG C of stirring 30min so that added PET material are all
Dissolving, obtains PET degraded solutions.
Step 1 gained phenolic resin performed polymer is added in another reaction kettle, is warming up to 100 DEG C, is added obtained by step 2
PET phenol solutions, and reinforcing agent Al (OH) is added3, foaming agent pentane and the mixed acid of p-methyl benzenesulfonic acid and sulfuric acid solidification
Agent is mixed evenly, and injects preset board mould.Phenolic resin performed polymer, PET phenol solutions, reinforcing agent Al (OH)3、
The mass fraction ratio of the mixing acid as curing agent of foaming agent pentane, p-methyl benzenesulfonic acid and sulfuric acid is 90 ︰, 10 ︰, 10 ︰, 4 ︰ 10.
50 ± 2 DEG C of 5~20min of mold temperature are kept, then heat to 70 ± 2 DEG C of 10~30min of maintenance, then be cooled to 50
± 2 DEG C of 5~20min of maintenance, are then cooled to 35 ± 2 DEG C, removal mold is to get PET reclaimed materials toughening modifying phenol of the invention
Aldehyde foam board.
Claims (10)
1. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials, it is characterised in that include the following steps：
1) it is that raw material prepares expandable phenolic resin performed polymer by phenol and paraformaldehyde；
2) the PET reclaimed materials after impurity and purification is dissolved in quaternary ammonium salt with phenol eutectic solvent, the phenol for obtaining PET reclaimed materials is molten
Liquid adds expandable phenolic resin performed polymer, foaming agent, reinforcing agent and curing agent that step 1) obtains, is after foamed solidification
Obtain phenolic resin foamed board.
2. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 1, it is characterised in that
In step 2), the phenol solution of the PET reclaimed materials, expandable phenolic resin performed polymer, foaming agent, reinforcing agent, curing agent
Mass ratio be：(10~30) ︰ (70~90) ︰ (2~10) ︰ (10~40)：(10~20).
3. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 1, it is characterised in that
In step 2), the PET reclaimed materials uses the waste product generated in PET polyester production process and leftover pieces and PET polyester to make
With the reclaimed materials of waste later.
4. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 1, it is characterised in that
In step 2), the preparation method of the quaternary ammonium salt and phenol eutectic solvent is：Quaternary ammonium salt and phenol heating stirring are formed
The mass percent of eutectic solvent, wherein quaternary ammonium salt and phenol is 75%~125%.
5. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 1, it is characterised in that
In step 2), the preparation method of the phenol solution of the PET reclaimed materials is：By PET reclaimed materials, it is sliced into after removal of impurities is handled
Size diameter is no more than the tablet of 1cm, is added into quaternary ammonium salt and phenol eutectic solvent, up to PET after heating stirring
The phenol solution of reclaimed materials.
6. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 1, it is characterised in that
In step 2), the mass ratio of the PET reclaimed materials and quaternary ammonium salt and phenol eutectic solvent is (10~30) ︰ (50~120).
7. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 4 or 5, feature
It is that the temperature of the heating stirring is 50~120 DEG C.
8. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 1, it is characterised in that
In step 2), the foaming agent is selected from least one of pentane, n-hexane, petroleum ether.
9. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 1, it is characterised in that
In step 2), the reinforcing agent is selected from Al (OH)3、Mg(OH)2At least one of.
10. a kind of method enhancing phenolic resin foamed board toughness with PET reclaimed materials as described in claim 1, feature exist
In in step 2), the curing agent selected from p-methyl benzenesulfonic acid, xylene monosulfonic acid, in phenolsulfonic acid, sulfuric acid, phosphoric acid at least
It is a kind of.
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| CN112876806A (en) * | 2021-02-09 | 2021-06-01 | 常熟东南塑料有限公司 | Phenolic molding plastic toughened by PET reclaimed materials |
| CN112898727A (en) * | 2021-02-10 | 2021-06-04 | 常熟东南塑料有限公司 | Preparation method of oil-resistant heat-resistant dimensionally stable phenolic molding compound |
| CN112898728A (en) * | 2021-02-10 | 2021-06-04 | 常熟东南塑料有限公司 | Oil-resistant heat-resistant dimensionally stable phenolic moulding compound |
| CN113024990A (en) * | 2021-03-19 | 2021-06-25 | 常熟东南塑料有限公司 | High-toughness flame-retardant heat-resistant phenolic molding compound and preparation method thereof |
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