CN104877094A - Method for producing modified phenolic resin - Google Patents
Method for producing modified phenolic resin Download PDFInfo
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- CN104877094A CN104877094A CN201510254955.4A CN201510254955A CN104877094A CN 104877094 A CN104877094 A CN 104877094A CN 201510254955 A CN201510254955 A CN 201510254955A CN 104877094 A CN104877094 A CN 104877094A
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- modified phenolic
- phenol
- linking agent
- formaldehyde
- propylene rubber
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Abstract
The invention discloses a method for producing modified phenolic resin. The method comprises the following steps: adding phenol and formaldehyde into a reaction kettle, uniformly mixing, and keeping the temperature; sequentially adding ethylene propylene rubber and a cross-linking agent, keeping the temperature, standing still, finally adding a catalyst, heating step by step, stopping the reaction when the viscosity of the reaction product is 2-3 Pascal.second, and filtering so as to remove the catalyst, wherein the mass ratio of phenol to formaldehyde to ethylene propylene rubber to the cross-linking agent to the catalyst is 1:(1.5-2.5):(0.2-0.8):(0.05-0.2):(0.05-0.1). According to the method for producing modified phenolic resin, as ethylene propylene rubber and the cross-linking agent are added into a mixed solution of phenol and formaldehyde, and magnesium oxide is taken as the catalyst, the modified phenolic resin is excellent in strength, toughness and flame retardancy, and relatively high use requirements can be met.
Description
Technical field
The present invention relates to chemical industry resin technology field, especially a kind of production method of modified phenolic resins.
Background technology
Resol realizes industrialized synthetic resins the earliest, because it has good mechanicalness, winter hardiness, electrical insulating property, molding processibility etc., become the indispensable material of each industrial sector, had purposes widely.But the weakness of resol is its intensity and poor toughness, be difficult to the needs adapting to broad mass market with large-scale continuous production, therefore people are devoted to its study on the modification always, it is desirable to produce the modified phenolic resins with ideal tensile strength.
Summary of the invention
The object of this invention is to provide a kind of production method of modified phenolic resins, the production method of this modified phenolic resins can solve the not good problem of resol intensity.
In order to solve the problem, the technical solution used in the present invention is:
The production method of modified phenolic resins of the present invention comprises the following steps:
A, phenol and formaldehyde are added in reactor, mix, insulation;
B, add ethylene-propylene rubber(EPR), linking agent successively, insulation leaves standstill, and finally adds catalyzer, is progressively warming up to 70 DEG C ~ 80 DEG C, when the viscosity of question response product is 2 ~ 3 pascal second, stopped reaction, filters, removing catalyzer;
Wherein, phenol, formaldehyde, the mass ratio of ethylene-propylene rubber(EPR), linking agent and catalyzer is 1:1.5 ~ 2.5:0.2 ~ 0.8:0.05 ~ 0.2:0.05 ~ 0.1.
In technique scheme, scheme can also be more specifically: described phenol is phenol, cresylol or both mixtures.
Further, described linking agent is zinc acetate.
Further, described catalyzer is magnesium oxide.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
The production method of modified phenolic resins of the present invention adds ethylene-propylene rubber(EPR) and linking agent in the mixing solutions of phenol and formaldehyde, and using magnesium oxide as catalyzer, modified resol has excellent intensity, toughness and flame retardant resistance, can meet higher user demand.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1
The production method of the present embodiment modified phenolic resins, is characterized in that comprising the following steps: add in reactor by phenol and formaldehyde, mix, insulation; Add ethylene-propylene rubber(EPR), zinc acetate successively, insulation leaves standstill, and finally adds magnesia catalyst, is progressively warming up to 70 DEG C, and when the viscosity of question response product is 2 pascal second, stopped reaction, filters, removing catalyzer; Wherein, phenol, formaldehyde, the mass ratio of ethylene-propylene rubber(EPR), linking agent and catalyzer is 1:1.5:0.5:0.05:0.05.
Embodiment 2
The production method of the present embodiment modified phenolic resins, is characterized in that comprising the following steps: add in reactor by cresylol and formaldehyde, mix, insulation; Add ethylene-propylene rubber(EPR), zinc acetate successively, insulation leaves standstill, and finally adds magnesia catalyst, is progressively warming up to 75 DEG C, and when the viscosity of question response product is 3 pascal second, stopped reaction, filters, removing catalyzer; Wherein, cresylol, formaldehyde, the mass ratio of ethylene-propylene rubber(EPR), linking agent and catalyzer is 1:2:0.2:0.1:0.08.
Embodiment 3
The production method of the present embodiment modified phenolic resins, is characterized in that comprising the following steps: add in reactor by phenol and formaldehyde, mix, insulation; Add ethylene-propylene rubber(EPR), zinc acetate successively, insulation leaves standstill, and finally adds magnesia catalyst, is progressively warming up to 80 DEG C, and when the viscosity of question response product is 2.5 pascal second, stopped reaction, filters, removing catalyzer; Wherein, phenol, formaldehyde, the mass ratio of ethylene-propylene rubber(EPR), linking agent and catalyzer is 1:2.5:0.8:0.2:0.1.
Claims (4)
1. a production method for modified phenolic resins, is characterized in that comprising the following steps:
A, phenol and formaldehyde are added in reactor, mix, insulation;
B, add ethylene-propylene rubber(EPR), linking agent successively, insulation leaves standstill, and finally adds catalyzer, is progressively warming up to 70 DEG C ~ 80 DEG C, when the viscosity of question response product is 2 ~ 3 pascal second, stopped reaction, filters, removing catalyzer;
Wherein, phenol, formaldehyde, the mass ratio of ethylene-propylene rubber(EPR), linking agent and catalyzer is 1:1.5 ~ 2.5:0.2 ~ 0.8:0.05 ~ 0.2:0.05 ~ 0.1.
2. the production method of modified phenolic resins according to claim 1, is characterized in that described phenol is phenol, cresylol or both mixtures.
3. the production method of modified phenolic resins according to claim 1, is characterized in that described linking agent is zinc acetate.
4. the production method of modified phenolic resins according to claim 1, is characterized in that described catalyzer is magnesium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510254955.4A CN104877094A (en) | 2015-05-19 | 2015-05-19 | Method for producing modified phenolic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510254955.4A CN104877094A (en) | 2015-05-19 | 2015-05-19 | Method for producing modified phenolic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104877094A true CN104877094A (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510254955.4A Pending CN104877094A (en) | 2015-05-19 | 2015-05-19 | Method for producing modified phenolic resin |
Country Status (1)
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| CN (1) | CN104877094A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587522A (en) * | 2018-04-28 | 2018-09-28 | 安徽富煌门窗幕墙有限公司 | A kind of EPT rubber packing item and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798374A (en) * | 2010-01-18 | 2010-08-11 | 太原化学工业集团技术中心 | Modified phenolic resin and manufacture method thereof |
| CN102181125A (en) * | 2011-03-31 | 2011-09-14 | 山东圣泉化工股份有限公司 | Preparation method of modified phenolic resin |
| CN104059580A (en) * | 2013-03-24 | 2014-09-24 | 合肥安诺新型建材有限公司 | Formaldehyde-free phenolic resin binder and preparation method thereof |
-
2015
- 2015-05-19 CN CN201510254955.4A patent/CN104877094A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798374A (en) * | 2010-01-18 | 2010-08-11 | 太原化学工业集团技术中心 | Modified phenolic resin and manufacture method thereof |
| CN102181125A (en) * | 2011-03-31 | 2011-09-14 | 山东圣泉化工股份有限公司 | Preparation method of modified phenolic resin |
| CN104059580A (en) * | 2013-03-24 | 2014-09-24 | 合肥安诺新型建材有限公司 | Formaldehyde-free phenolic resin binder and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587522A (en) * | 2018-04-28 | 2018-09-28 | 安徽富煌门窗幕墙有限公司 | A kind of EPT rubber packing item and preparation method thereof |
| CN108587522B (en) * | 2018-04-28 | 2020-02-11 | 安徽富煌门窗幕墙有限公司 | Ethylene propylene diene monomer rubber sealing strip and preparation method thereof |
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Application publication date: 20150902 |
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| RJ01 | Rejection of invention patent application after publication |