CN106632929B - A kind of valoneaic acid dilactone copolymerization phenolic foam process for preparing resins - Google Patents

A kind of valoneaic acid dilactone copolymerization phenolic foam process for preparing resins Download PDF

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Publication number
CN106632929B
CN106632929B CN201610835315.7A CN201610835315A CN106632929B CN 106632929 B CN106632929 B CN 106632929B CN 201610835315 A CN201610835315 A CN 201610835315A CN 106632929 B CN106632929 B CN 106632929B
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valoneaic
phenolic
resin
dilactone
acid dilactone
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CN106632929A (en
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葛铁军
王佳
肖尚雄
王成城
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Shenyang University of Chemical Technology
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Shenyang University of Chemical Technology
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G8/00Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/04Condensation polymers of aldehydes or ketones with phenols only of aldehydes
    • C08G8/08Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
    • C08G8/24Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with mixtures of two or more phenols which are not covered by only one of the groups C08G8/10 - C08G8/20

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

A kind of valoneaic acid dilactone copolymerization phenolic foam process for preparing resins, it is related to a kind of process for preparing resins, the following steps are included: quantitative phenolic compound, valoneaic acid dilactone, catalyst are sequentially added in reaction kettle, then quantitative aldehyde compound is added portionwise in reaction kettle within a certain period of time, with in acetic acid and resin liquid is neutral, then the small molecule in system is removed under reduced pressure until no liquid is discharged, and obtaining thick liquid is that valoneaic acid dilactone is copolymerized phenolic foam resin.This method is to replace a part of phenol in the novolak resin stage with resourceful and cheap valoneaic acid dilactone, valoneaic acid dilactone belongs to biology base hyper-branched polyester, reactive active phenolic hydroxyl group is contained in periphery simultaneously, it adds it in phenolic resin system, its effect that can serve as chemical crosslinking point and stress absorption point, to which toughening enhances phenolic resin, mechanical property is promoted.The cystosepiment uniform foam cell prepared after foaming, rate of closed hole are high.

Description

A kind of valoneaic acid dilactone copolymerization phenolic foam process for preparing resins
Technical field
The present invention relates to a kind of process for preparing resins, are copolymerized phenolic foam resin more particularly to a kind of valoneaic acid dilactone Preparation method.
Background technique
Phenolic resin starting material is easy to get, low in cost, and mechanical strength is high, steady performance.But not with industry Disconnected development, puts forward new requirements High Performance Phenolic Resins, has been unable to meet requirement with pure phenolic resin.Phenolic resin knot The disadvantages of weak link on structure is that phenolic hydroxyl group and methylene are easy to oxidize, causes phenol formaldehyde foam brittleness big, and dusting degree is high.Mesh Before until, there is a large amount of material to be exploited for plasticizing phenol formaldehyde, such as rubber particles, thermoplastic elastomer (TPE), inorganic Particle, core-shell particles etc., but also rarely have research for dissaving polymer phenol-formaldehyde resin modified.
Valoneaic acid dilactone is a kind of natural polyphenol compound, belongs to biology base hyper-branched polyester, is present in a variety of trees In the bark and fruit of (such as Oak Tree and lacquer tree), while periphery adds it to phenolic aldehyde tree containing reactive active phenolic hydroxyl group In resin system, the effect of chemical crosslinking point and stress absorption point can be served as, so that toughening enhances phenolic resin, lifting force Performance is learned, the content of the small molecules such as free phenol in resin (aldehyde) is more reduced, keeps product more environmentally-friendly.And natural plant in recent years The development and utilization in goods and materials source are more and more valued by people, and environmental protection becomes emphasis topic, so natural polymer is added Entering to certain Polymer Synthesizings and modified field becomes new research direction.Valoneaic acid dilactone and phenolic resin are copolymerized at present A kind of novel phenolic Foamex is prepared to have not been reported.
Summary of the invention
The purpose of the present invention is to provide a kind of valoneaic acid dilactones to be copolymerized phenolic foam process for preparing resins, and this method is A part of phenol, valoneaic acid dilactone are replaced in the novolak resin stage with resourceful and cheap valoneaic acid dilactone Belong to biology base hyper-branched polyester, while periphery adds it in phenolic resin system containing reactive active phenolic hydroxyl group, Its effect that can serve as chemical crosslinking point and stress absorption point promotes mechanical property so that toughening enhances phenolic resin.Hair The cystosepiment uniform foam cell prepared after bubble, rate of closed hole are high.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of valoneaic acid dilactone copolymerization phenolic foam process for preparing resins, this method have following reaction:
Formulas I.
A kind of valoneaic acid dilactone is copolymerized phenolic foam process for preparing resins, and the preparation method includes following step It is rapid:
Quantitative phenolic compound, valoneaic acid dilactone, catalyst are sequentially added in about 60 ~ 80 DEG C of reaction kettles, then Quantitative aldehyde compound is added portionwise in reaction kettle within a certain period of time, high-speed stirred makes to be uniformly mixed, and reacts 30- 60min is to slowly warm up to 80 ~ 100 DEG C with the heating rate of 1~5 DEG C/min, is cooled to room after constant temperature stirring 1.5-2.5h Then temperature removes the small molecule in system under reduced pressure until no liquid is discharged, obtaining thick liquid is in acetic acid and resin liquid is neutral Valoneaic acid dilactone is copolymerized phenolic foam resin.
A kind of valoneaic acid dilactone is copolymerized phenolic foam process for preparing resins, and the phenolic compound is selected from benzene One of phenol, cresols, xylenol, nonyl phenol, bisphenol-A, resorcinol, propylphenol, ethyl -phenol and anacardol are more Kind.
A kind of valoneaic acid dilactone is copolymerized phenolic foam process for preparing resins, the aldehyde compound be formaldehyde, One of acetaldehyde, butyraldehyde, polyformaldehyde and furfural are a variety of.
A kind of valoneaic acid dilactone is copolymerized phenolic foam process for preparing resins, and the catalyst is sodium hydroxide, hydrogen One of strong base substances such as potassium oxide are a variety of.
The advantages and effects of the present invention are:
(1) valoneaic acid dilactone is added in phenolic resin formulations by the present invention by certain reaction for the first time prepares rubber Bowl acid dilactone is copolymerized phenolic foam resin, is the system of phenol-formaldehyde resin modified using the feature that valoneaic acid dilactone is resourceful It is standby that new thinking is provided.
(2) valoneaic acid dilactone provided by the invention is copolymerized phenolic foam resin, modest viscosity, and valoneaic acid dilactone belongs to Biology base hyper-branched polyester, while periphery adds it in phenolic resin system containing reactive active phenolic hydroxyl group, it can To serve as the effect of chemical crosslinking point and stress absorption point, so that toughening enhances phenolic resin, mechanical property is promoted.After foaming The cystosepiment uniform foam cell of preparation, rate of closed hole are high.
(3) simple process of the method for the present invention, environmentally protective, production cost is low, can become the modified phenol of industrialized production A kind of new technology of urea formaldehyde material.
Specific embodiment
The following describes the present invention in detail with reference to examples.
Embodiment 1
By the phenol solution of 80g, 20g valoneaic acid dilactone, 2g sodium hydroxide solution is sequentially added about 65 DEG C of reaction kettles In, then 65g paraformaldehyde is added three times in reaction kettle within half an hour, high-speed stirred makes to be uniformly mixed, reaction 30min is to slowly warm up to 90 DEG C with the heating rate of 5 DEG C/min, is cooled to room temperature after constant temperature stirring 1.5h, in acetic acid With resin liquid neutrality, the small molecule in system is then removed under reduced pressure until no liquid is discharged, obtaining thick liquid is in valoneaic acid two Ester is copolymerized phenolic resin.
Embodiment 2
By the phenol solution of 85g, 15g valoneaic acid dilactone, 2g sodium hydroxide solution is sequentially added about 65 DEG C of reaction kettles In, then 65g paraformaldehyde is added three times in reaction kettle within half an hour, high-speed stirred makes to be uniformly mixed, reaction 30min is to slowly warm up to 90 DEG C with the heating rate of 5 DEG C/min, is cooled to room temperature after constant temperature stirring 1.5h, in acetic acid With resin liquid neutrality, the small molecule in system is then removed under reduced pressure until no liquid is discharged, obtaining thick liquid is in valoneaic acid two Ester is copolymerized phenolic resin.
Embodiment 3
By the phenol solution of 90g, 10g valoneaic acid dilactone, 2g sodium hydroxide solution is sequentially added about 65 DEG C of reaction kettles In, then 65g paraformaldehyde is added three times in reaction kettle within half an hour, high-speed stirred makes to be uniformly mixed, reaction 30min is to slowly warm up to 90 DEG C with the heating rate of 5 DEG C/min, is cooled to room temperature after constant temperature stirring 1.5h, in acetic acid With resin liquid neutrality, the small molecule in system is then removed under reduced pressure until no liquid is discharged, obtaining thick liquid is in valoneaic acid two Ester is copolymerized phenolic resin.
Embodiment 4
By the phenol solution of 95g, 5g valoneaic acid dilactone, 2g sodium hydroxide solution is sequentially added in about 65 DEG C of reaction kettles, Then 65g paraformaldehyde being added three times in reaction kettle within half an hour, high-speed stirred makes to be uniformly mixed, 30min is reacted, 90 DEG C are to slowly warm up to the heating rate of 5 DEG C/min, is cooled to room temperature after constant temperature stirring 1.5h, in acetic acid and resin Liquid is neutral, then removes the small molecule in system under reduced pressure until no liquid discharge, obtains thick liquid as valoneaic acid dilactone copolymerization Phenolic resin.
Comparative example
The phenol solution of 100g, 2g sodium hydroxide solution are sequentially added in about 65 DEG C of reaction kettles, then by 65g poly Formaldehyde is added three times in reaction kettle within half an hour, and high-speed stirred makes to be uniformly mixed, and 30min is reacted, with 5 DEG C/min's Heating rate is to slowly warm up to 90 DEG C, is cooled to room temperature after constant temperature stirring 1.5h, in acetic acid and resin liquid is neutral, then depressurizes The small molecule in system is evaporated off until no liquid is discharged, obtaining thick liquid is phenolic resin.
The performance comparison of valoneaic acid dilactone prepared by the embodiment of the present invention copolymerization phenolic resin and phenolic resin It is as follows:
As seen from the above embodiment, valoneaic acid dilactone of the invention is copolymerized phenolic resin modest viscosity, foam rate of closed hole Raising, bending strength are good.This is because valoneaic acid dilactone belongs to biology base hyper-branched polyester, while periphery is containing reactive Active phenolic hydroxyl group, adds it in phenolic resin system, can serve as the effect of chemical crosslinking point and stress absorption point, To which toughening enhances phenolic resin, mechanical property is promoted.The cystosepiment uniform foam cell prepared after foaming, rate of closed hole are high.
Above in conjunction with specific embodiment, an exemplary description of the invention, it is clear that realization of the invention is not by upper The limitation of mode is stated, as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved general Conception and technical scheme of the invention directly apply to other occasions, are within the scope of the invention.

Claims (3)

1. a kind of valoneaic acid dilactone is copolymerized phenolic foam process for preparing resins, which is characterized in that the preparation method include with Lower step:
Quantitative phenolic compound, valoneaic acid dilactone, catalyst are sequentially added in 60 ~ 80 DEG C of reaction kettles, then will be quantified Aldehyde compound be added portionwise in reaction kettle within a certain period of time, high-speed stirred makes to be uniformly mixed, react 30-60min, with The heating rate of 1~5 DEG C/min is to slowly warm up to 80 ~ 100 DEG C, is cooled to room temperature after constant temperature stirring 1.5-2.5h, uses acetic acid Resin liquid neutrality is neutralized, then removes the small molecule in system under reduced pressure until no liquid is discharged, obtaining thick liquid is valoneaic acid two Lactone is copolymerized phenolic foam resin;
The catalyst is sodium hydroxide;
The structural formula of the valoneaic acid dilactone copolymerization phenolic foam resin is as follows:
2. a kind of valoneaic acid dilactone according to claim 1 is copolymerized phenolic foam process for preparing resins, which is characterized in that The phenolic compound is selected from phenol, cresols, xylenol, nonyl phenol, bisphenol-A, resorcinol, propylphenol, ethyl -phenol With one of anacardol or a variety of.
3. a kind of valoneaic acid dilactone according to claim 1 is copolymerized phenolic foam process for preparing resins, which is characterized in that The aldehyde compound is one of formaldehyde, acetaldehyde, butyraldehyde, polyformaldehyde and furfural or a variety of.
CN201610835315.7A 2016-09-21 2016-09-21 A kind of valoneaic acid dilactone copolymerization phenolic foam process for preparing resins Active CN106632929B (en)

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Denomination of invention: A method for preparing valonate diolide copolymer phenolic foam resin

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