CN1245815A - Foaming method of high-molecular polymer water soluble emulsion - Google Patents
Foaming method of high-molecular polymer water soluble emulsion Download PDFInfo
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- CN1245815A CN1245815A CN 99114395 CN99114395A CN1245815A CN 1245815 A CN1245815 A CN 1245815A CN 99114395 CN99114395 CN 99114395 CN 99114395 A CN99114395 A CN 99114395A CN 1245815 A CN1245815 A CN 1245815A
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- polymer water
- water soluble
- molecular polymer
- soluble emulsion
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Abstract
The present invention relates to a foaming method of macromolecular polymer water emulsion. It possesses macromolecular polymer water emulsion and filling material, and is characterized by that adding the rosin and saponified product of sodium carbonate (or potassium carbonate) as foaming agent or injecting the pressurized carbon dioxide in the course of spray coating by using high viscosity spray-coating machine as foaming agent or using both at the same time, and its foaming temp. is controlled at 60-80 deg.C. Said invention is simple in operation, non-toxic, odorless, low-temp., good in safety and high in foaming rate, and the foamed product possesses good elasticity, uniform void volume, good heat-insulating, shock-proof and fire-resistant property, and can be extensively used in the fields of automobile industry, aviation industry, chemical industry and building industry, etc..
Description
The present invention relates to the foaming technique of the foaming technique of high molecular polymer, particularly high-molecular polymer water soluble emulsion.
At present, plastics through foaming obtain being extensive use of of industry, the product for civilian use, for example: high-molecular polymer water soluble emulsion ethylene-vinyl acetate copolymer emulsion glue (EVA) adds filler and whipping agent, after the foaming oven dry, has higher space, to reach damping, insulation, flame retardant effect, on the industry and the product for civilian use such as can be used for automobile, railroad train, boats and ships, building, chemical industry equipment and refrigeration, heat.But the employed chemical foaming agent of present foaming technique can only be at blowing temperature more than 100 ℃.Do not reach blowing temperature, and be generally 1000kg/m with the product density before foaming less than 80 ℃
3, and the density after the foaming is generally 750kg/m
3, calculating its frothing percentage is about 1.3.
The purpose of this invention is to provide a kind of high-molecular polymer water soluble emulsion, its blowing temperature＜=80 ℃, frothing percentage reaches the low-temp foaming method more than 1.54.
Its first method of technological method that realizes the object of the invention is: add filler in high-molecular polymer water soluble emulsion, the saponification resultant that adds with rosin and yellow soda ash (or salt of wormwood) is a whipping agent again, mixes back foaming under 60～80 ℃ of temperature, oven dry.
Second method is: add filler in high-molecular polymer water soluble emulsion, when mixing and spraying with dense fluid spraying machine, injecting carbon dioxide is as whipping agent simultaneously, control pressure 1～7kg/m
2, carbonic acid gas can be dissolved in the high-molecular polymer water soluble emulsion, through being sprayed on foaming under 60～80 ℃ of temperature, oven dry on the various goods.
Above-mentioned two kinds of methods can be used in combination, promptly on the first method basis again with second method in when spraying, injecting carbon dioxide is sprayed on the goods and foaming under 60～80 ℃ of temperature, oven dry.
Because its foaming decomposition temperature of the chemical foaming agent that general plastics are used is all greater than 100 ℃, only discrete also is greater than 85 ℃, because the foamed products major part of high-molecular polymer water soluble emulsion is used for needing on automobile, train, steamer, the aircraft positions such as solar heat protection, insulation, damping performance, for this reason, have than high foaming rate and reach more than 1.5, and good safety performance such as that construction the time has is nontoxic, tasteless, low temperature, so, adopting two kinds of above-mentioned whipping agents is saponification resultant, and the carbonic acid gas of rosin and yellow soda ash (or salt of wormwood), can both reach above-mentioned requirement.Because the saponification product of rosin and yellow soda ash (or salt of wormwood) can produce carbon dioxide and foam about 70 ℃, and the pressure injecting carbon dioxide is dissolved in the high-molecular polymer water soluble emulsion, so volatilization foaming under 70 ℃ of left and right sides temperature.Because high molecular polymer water miscible liquid speed when the oven drying at low temperature moulding is slower, so uniform in foaming, voidage is also big, so frothing percentage is just high.
The present invention is further illustrated below in conjunction with embodiment.
Embodiment 1: rosin and yellow soda ash (or salt of wormwood) saponification resultant is a whipping agent
Get a certain amount of high-molecular polymer water soluble emulsion, here adopt ethylene-vinyl acetate copolymer water emulsion (EVA), add filler silicon magnesium compound insulating material, stir, the saponification resultant that adds rosin and yellow soda ash (or salt of wormwood) again, its weight is 0.1%～5% of high-molecular polymer water soluble emulsion weight, be stirred into white paste, be sprayed on the goods with dense fluid spraying machine, controlled temperature is at 60～80 ℃ of foaming, drying forming, after tested, its density of white paste is generally 1000kg/m before foaming, the oven dry
3, its density reaches 620～650kg/m after foaming, oven dry
3Its frothing percentage is 1000/620～650=1.61～1.54, above high-molecular polymer water soluble emulsion can adopt vinyl acetate-ethylene copolymer water emulsion (VAE), along Succinic Acid fourth two fat-vinyl acetate between to for plastic water emulsion, acetate ethylene copolymer water emulsion, vinyl acetate between to for plastic-butyl acrylate copolymer water emulsion (AVA), vinyl acetate between to for plastic-along butyric acid two dibutyl phthalate multipolymer water emulsions (AVM), polyacrylate(s) water miscible liquid, polyvinyl chloride latex, the also available pearl powder of vinyl acetate emulsion etc., filler.
Embodiment 2: it is whipping agent that pressure dissolves in carbonic acid gas
Adopt the high-molecular polymer water soluble emulsion ethene-vinyl acetate polymer water soluble emulsion of embodiment 1, add filler silicon magnesium compound insulating material, stirring is white paste, the dense fluid spraying machine of packing into, spraying is injecting carbon dioxide simultaneously, and the pressure-controlling of carbonic acid gas is at 1～7kg/m
2, after spraying finishes, foaming under 60～80 ℃ of temperature, oven dry, after tested, the density after the foaming is at 630～670kg/m
3, frothing percentage=1.59～1.49.
Embodiment 3
High-molecular polymer water soluble emulsion is an ethylene-vinyl multipolymer water emulsion, add filler silicon magnesium compound insulating material, the saponification resultant that adds rosin and yellow soda ash (or salt of wormwood) again, weight is 0.02%～5% of ethylene-vinyl multipolymer water emulsion weight, be stirred into white paste, the dense fluid spraying machine of packing into, injecting carbon dioxide (steel cylinder dress carbonic acid gas) when spraying, control pressure 1～7kg/cm
2Be sprayed on the goods, spray certain thickness, foam, dry back density after tested at 500kg/m after foam, dry under 60～80 ℃ of temperature
3～600kg/m
3Between, its frothing percentage is 2～1.67.
The foaming mode of above-mentioned high-molecular polymer water soluble emulsion, it is simple to have construction, nontoxic, tasteless, low temperature, safety performance is good, and cost is low, and the product space after the foaming is even, good springiness, have well heat insulation, insulation, performance such as shockproof, can be widely used in all kinds of usefulness that need insulation, fire-retardant, damping position of automobile, railroad train, aviation, steamer, also can be heat insulation, the usefulness of insulation, fire-retardant, shock-absorbing in order to industries such as chemical industry, cooling and warmings.
Claims (4)
1. the foaming method of a high-molecular polymer water soluble emulsion, it has high-molecular polymer water soluble emulsion and filler, it is characterized in that: adding uses the saponification resultant of rosin and yellow soda ash (or salt of wormwood) as whipping agent, and back foaming under 60～80 ℃ of temperature, oven dry stir.
2. the foaming method of a high-molecular polymer water soluble emulsion, it has high-molecular polymer water soluble emulsion and filler, it is characterized in that: when spraying with dense fluid spraying machine, injecting carbon dioxide is as whipping agent simultaneously, control pressure 1～7kg/cm
2, be sprayed on the goods foaming under 60～80 ℃ of temperature, oven dry.
3. the foaming method of a high-molecular polymer water soluble emulsion, it has high-molecular polymer water soluble emulsion and filler, it is characterized in that: adding uses the saponification resultant of rosin and yellow soda ash (or salt of wormwood) as whipping agent, stir when afterwards spraying with dense fluid spraying machine, while injecting carbon dioxide whipping agent, control pressure 1～7kg/cm
2, foaming under 60～80 ℃ of temperature, oven dry.
4. according to claim 1,3 described methods, it is characterized in that: its consumption of saponification resultant of rosin and yellow soda ash (or salt of wormwood) is 0.02%～5% of a high-molecular polymer water soluble emulsion weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114395 CN1245815A (en) | 1999-08-20 | 1999-08-20 | Foaming method of high-molecular polymer water soluble emulsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114395 CN1245815A (en) | 1999-08-20 | 1999-08-20 | Foaming method of high-molecular polymer water soluble emulsion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1245815A true CN1245815A (en) | 2000-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99114395 Pending CN1245815A (en) | 1999-08-20 | 1999-08-20 | Foaming method of high-molecular polymer water soluble emulsion |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8779016B2 (en) | 2006-12-29 | 2014-07-15 | Owens Corning Intellectual Capital, Llc | Spray-in latex foam for sealing and insulating |
| US8875472B2 (en) | 2006-12-29 | 2014-11-04 | Owens Corning Intellectual Capital, Llc | Room temperature crosslinked foam |
| US9714331B2 (en) | 2006-12-29 | 2017-07-25 | Owens Corning Intellectual Capital, Llc | Room temperature crosslinked foam |
| US9868836B2 (en) | 2006-12-29 | 2018-01-16 | Owens Corning Intellectual Capital, Llc | Room temperature crosslinked foam |
| CN110358133A (en) * | 2019-07-17 | 2019-10-22 | 江苏锐康新材料科技有限公司 | A kind of acrylate foamed polymer of substitution for PVA collodion and preparation method thereof |
-
1999
- 1999-08-20 CN CN 99114395 patent/CN1245815A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8779016B2 (en) | 2006-12-29 | 2014-07-15 | Owens Corning Intellectual Capital, Llc | Spray-in latex foam for sealing and insulating |
| US8875472B2 (en) | 2006-12-29 | 2014-11-04 | Owens Corning Intellectual Capital, Llc | Room temperature crosslinked foam |
| US9714331B2 (en) | 2006-12-29 | 2017-07-25 | Owens Corning Intellectual Capital, Llc | Room temperature crosslinked foam |
| US9868836B2 (en) | 2006-12-29 | 2018-01-16 | Owens Corning Intellectual Capital, Llc | Room temperature crosslinked foam |
| CN110358133A (en) * | 2019-07-17 | 2019-10-22 | 江苏锐康新材料科技有限公司 | A kind of acrylate foamed polymer of substitution for PVA collodion and preparation method thereof |
| CN110358133B (en) * | 2019-07-17 | 2021-10-15 | 江苏锐康新材料科技有限公司 | Acrylate foam polymer replacing PVA collodion and preparation method thereof |
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