CN100509931C - Process for producing phenolic foam by step temperature control method - Google Patents
Process for producing phenolic foam by step temperature control method Download PDFInfo
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- CN100509931C CN100509931C CNB2006100313374A CN200610031337A CN100509931C CN 100509931 C CN100509931 C CN 100509931C CN B2006100313374 A CNB2006100313374 A CN B2006100313374A CN 200610031337 A CN200610031337 A CN 200610031337A CN 100509931 C CN100509931 C CN 100509931C
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Abstract
The invention relates to a technology of state type temperature controlling method to produce phenol formaldehyde foam. It includes the following steps: compounding F-11 and pentane to complex forming agent; compounding benzene sulfonic acid and phosphoric acid to catalyst curing agent; mixing phenolic resin, silicone oil 193, complex foaming agent, and catalyst curing agent according to a certain ratio, and injecting into mould; laying the mould in 38-42 degree centigrade channel for 5min, heating to 58-62 degree centigrade and lasting for 25-35min; heating to 66-70 degree centigrade lasting for 30-40min; cooling to 60-64 degree centigrade, keeping for 60-80min, cooling to 38-42 degree centigrade, keeping for 12 hours to gain phenol formaldehyde foam. The technology is benefit for the foam forming, and makes the product stable.
Description
Technical field
The present invention relates to a kind of is the process for producing phenolic foam of main raw material(s) with the heat-reactive phenolic resin, belongs to technical field of inorganic chemical industry.
Background technology
Phenol formaldehyde foam is a kind of porous plastics that is obtained by foaming by resol.Plastic foamed method generally is divided into three kinds of mechanical foaming, physical blowing and chemical foamings.Wherein the mechanical foaming method is meant the violent stirring by means of machinery, gas is sneaked into equably form bubble in the resin; Physical foaming method is meant by means of the formed a large amount of bubble of the change of the physical condition that is dissolved in the whipping agent in the resin.The chemical foaming method then is meant and makes whipping agent generation chemical transformation in the foaming process, decomposes thus and produces a large amount of gases and finish and make foaming process.According to resol foamable reaction mechanism, traditional method adopts physical foaming method to carry out mostly.The whipping agent that this traditional physical foaming method uses divides rare gas element class and low-boiling point liquid class two classes.The whipping agent that phenol formaldehyde foam is commonly used is the volatile liquids of various boiling points between 30～60 ℃, therefore, and the temperature of foaming control decision foamy performance.Problems such as to the out-of-control mode of temperature, when suitability for industrialized production more than a cubic metre during foam, can occur the thicker foam of a large amount of epidermises usually by traditional, density stratification is serious up and down for foam, and aberration is excessive in the bubble.
Summary of the invention
The technical problem to be solved in the present invention is at the defective that prior art exists, to propose a kind of technology of producing phenolic foam by step temperature control method.By the technology controlling and process of blowing temperature and preferred whipping agent kind etc. being solved the homogeneity question of foam.
Technical solution of the present invention is that the process using following steps of described producing phenolic foam by step temperature control method are carried out the resol foaming:
(1), F-11 and pentane is standby by 1～3:7～9 weight ratio compatibilities are mixed and made into composite foamable agent in regular turn;
(2), Phenylsulfonic acid and phosphoric acid is standby by 6～8:2～4 weight ratio compatibilities are mixed and made into catalytic curing agent in regular turn;
(3), resol, silicone oil 193, step (1) gained composite foamable agent, step (2) gained catalytic curing agent are pressed 95～105:2～5:2.5～5:4～10 weight ratio compatibility high-speed mixing in regular turn, the injection particular manufacturing craft;
(4), above-mentioned mould is inserted the tunnel, temperature is 40 ± 2 ℃ in the tunnel.Kept 5 minutes, and be warming up to 60 ± 2 ℃.Continue 25～35 minutes;
(5), temperature is brought up to 68 ± 2 ℃, lasting 30～40 minutes;
(6), be cooled to 62 ± 2 ℃.Kept 60～80 minutes, and be cooled to 40 ± 2 ℃ again.Treat temperature-stable, take out foaming mould.Keep promptly getting in 12 hours phenol formaldehyde foam.
Referring to accompanying drawing, the temperature curve of this technology is:
At the foaming initial stage, the main purpose that applies outside temperature is to accelerate the internal-external temperature difference with the balance foam.This moment is as the acid heat release synchronously of solidifying agent, outside temperature need with the inner heat release coupling of foam, need in time change, thereby bring into play the effect of whipping agent effectively with internal temperature.By to temperature controlling, make each foaming component of composite foamable agent produce bubble step by step equably constantly, thereby make foam density even, epidermis forms slowly.
The invention has the beneficial effects as follows,, directly influence the foamy degree of uniformity, successfully solved the uniform problem of foamed products performance of phenol formaldehyde foam because this technology is reasonably controlled blowing temperature based on the foam theory of phenol formaldehyde foam.Experiment shows, adopts stage temperature control, helps foam and forms stable performance, unanimity.
Description of drawings
Accompanying drawing is a thetagram of the present invention.
Embodiment:
Embodiment 1:
(1), 2kgF-11 and 8kg pentane are mixed and made into composite foamable agent;
(2), 7kg Phenylsulfonic acid and 3kg phosphoric acid are mixed and made into catalytic curing agent;
(3), with after 120kg resol, 3kg silicone oil 193,4.5kg step (1) gained composite foamable agent, 6.5kg step (2) the gained catalytic curing agent high-speed mixing, inject the particular manufacturing craft of two cubic metres of specifications;
(4), the mould of step (3) is inserted temperature is in 40 ℃ the tunnel, continues 5 minutes, is warming up to 61 ℃, continues 28 minutes;
(5), temperature is brought up to 68 ℃, lasting 30 minutes;
(6), cool the temperature to 62 ℃, be incubated 60 minutes.Be cooled to 39 ℃ again, treat temperature-stable at 39 ℃, take out mould, kept 12 hours, opening mold promptly gets phenol formaldehyde foam.
Embodiment 2:
(1), 2.5kgF-11 and 7.5kg pentane are mixed and made into composite foamable agent;
(2), 7.5kg Phenylsulfonic acid and 2.5kg phosphoric acid are mixed and made into catalytic curing agent;
(3), with 200kg resol, 3kg silicone oil 193,8kg step (1) gained composite foamable agent, 13kg step (2) gained catalytic curing agent high-speed mixing, inject the particular manufacturing craft of four cubic metres of specifications;
(4), the mould of step (3) is inserted temperature is in 42 ℃ the tunnel, continues 5 minutes, is warming up to 62 ℃, continues 35 minutes;
(5), temperature is brought up to 70 ℃, lasting 40 minutes;
(6), cool the temperature to 62 ℃, be incubated 80 minutes.Be cooled to 41 ℃, treat temperature-stable at 41 ℃, take out mould, kept 12 hours, opening mold promptly gets phenol formaldehyde foam.
Claims (1)
1, a kind of technology of producing phenolic foam by step temperature control method, this technology are the following step:
(1), F-11 and pentane is standby by 1～3:7～9 weight ratio compatibilities are mixed and made into composite foamable agent in regular turn;
(2), Phenylsulfonic acid and phosphoric acid is standby by 6～8:2～4 weight ratio compatibilities are mixed and made into catalytic curing agent in regular turn;
(3), resol, silicone oil 193, step (1) gained composite foamable agent, step (2) gained catalytic curing agent are pressed 95～105:2～5:2.5～5:4～10 weight ratio compatibility high-speed mixing in regular turn, the injection particular manufacturing craft;
(4), above-mentioned mould is inserted the tunnel, temperature is 40 ± 2 ℃ in the tunnel, keeps 5 minutes, is warming up to 60 ± 2 ℃, continues 25～35 minutes;
(5), temperature is brought up to 68 ± 2 ℃, lasting 30～40 minutes;
(6), be cooled to 62 ± 2 ℃, kept 60～80 minutes, be cooled to 40 ± 2 ℃ again, treat temperature-stable, take out foaming mould, keep promptly getting in 12 hours phenol formaldehyde foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100313374A CN100509931C (en) | 2006-03-13 | 2006-03-13 | Process for producing phenolic foam by step temperature control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100313374A CN100509931C (en) | 2006-03-13 | 2006-03-13 | Process for producing phenolic foam by step temperature control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1850889A CN1850889A (en) | 2006-10-25 |
| CN100509931C true CN100509931C (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100313374A Expired - Fee Related CN100509931C (en) | 2006-03-13 | 2006-03-13 | Process for producing phenolic foam by step temperature control method |
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| CN (1) | CN100509931C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101177497B (en) * | 2007-12-12 | 2010-07-14 | 谢建军 | Method for producing pnenolic aldehyde foam |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071177A (en) * | 1991-12-07 | 1993-04-21 | 中国科学院广州化学所 | The method for making of water-absorbent phenolic foamed plastics |
| JP2857186B2 (en) * | 1989-11-21 | 1999-02-10 | 旭電化工業株式会社 | Phenol urethane foam |
| CN1566207A (en) * | 2003-06-27 | 2005-01-19 | 上海尖端工程材料有限公司 | Process for producing phenol formaldehyde foam products |
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2006
- 2006-03-13 CN CNB2006100313374A patent/CN100509931C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2857186B2 (en) * | 1989-11-21 | 1999-02-10 | 旭電化工業株式会社 | Phenol urethane foam |
| CN1071177A (en) * | 1991-12-07 | 1993-04-21 | 中国科学院广州化学所 | The method for making of water-absorbent phenolic foamed plastics |
| CN1566207A (en) * | 2003-06-27 | 2005-01-19 | 上海尖端工程材料有限公司 | Process for producing phenol formaldehyde foam products |
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| CN1850889A (en) | 2006-10-25 |
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Granted publication date: 20090708 Termination date: 20110313 |