CN104962096A - Preparation method of polyvinyl alcohol foamed plastics - Google Patents
Preparation method of polyvinyl alcohol foamed plastics Download PDFInfo
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- CN104962096A CN104962096A CN201510407001.2A CN201510407001A CN104962096A CN 104962096 A CN104962096 A CN 104962096A CN 201510407001 A CN201510407001 A CN 201510407001A CN 104962096 A CN104962096 A CN 104962096A
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- polyvinyl alcohol
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Abstract
The invention relates to the manufacturing of a material, and particularly to a preparation method of polyvinyl alcohol foamed plastics. The preparation method comprises the following steps: A, dissolving a given amount of polyvinyl alcohol; B, adding a dispersed framework material; C, stirring until uniformly mixed; D, adding additives; E, stirring and foaming; F, pouring into a mould, and drying. The polyvinyl alcohol foamed plastics prepared in the method adopt natural fibers as a framework raw material, the mechanical performance and degradation performance of foams can be improved; meanwhile, the source of straws and grass is wide, the cost is low, the starch used as a hole-forming agent is avoided, the grain resource is saved, reagents harmful to the human body such as formaldehyde are not used in the preparation process of the material, the environment-friendly preparation requirement can be met, the material foaming rate is relatively high, is 2 to 4 times and can be controlled by virtue of the content of the foaming agent and the stirring time, the softness adjusting rate of the material is high and can be adjusted by controlling the content of the plasticizer, and various buffer packaging materials meeting different requirements can be prepared.
Description
Technical field
The present invention relates to material preparation, particularly relate to a kind of polyvinyl alcohol foam plastics preparation method.
Background technology
The production technique of foaming PVA, normally in the reactor that stirring and temperature control device are housed, adds PVA and water, under whipped state, is warming up to PVA and dissolves completely; Then cool, add the fully mixing such as linking agent, whipping agent, acid, pour mould into, heat preservation solidification in 50 DEG C of baking ovens; After taking-up, wash away unreacted linking agent and acid, can porous plastics be obtained.The raw material needed generally has PVA, linking agent (being generally formaldehyde), acid catalyst (sulfuric acid, hydrochloric acid etc.), tensio-active agent (dodecyl sodium sulfate, polyethylene oxide tridecyl ether etc.), whipping agent (carbonate etc.), nucleator (starch based etc.) and water, in order to improve some performance of foam article, suitable properties-correcting agent can be added.Such as in order to improve foam article dry hardening and deposit in atmospheric environment time flexibility, appropriate polyvalent alcohol or polyoxyethylene glycol etc. can be added in component, but linking agent formaldehyde used in preparation process is fairly obvious to harm.Formaldehyde mainly causes the irritation to organs such as eye, pharynx, noses to the impact of practitioner's health, the degree of symptom and occurrence frequency and air formaldehyde concentration in close relations, in addition, formaldehyde also can cause the neurasthenic syndromes such as giddy, headache, insomnia, allergic and except cough except other respiratory tract symptoms.And use starch as pore former, washed away as refuse process after having foamed again, wasted precious grain resource.Wash away the formaldehyde of non-complete reaction, acid and starch after reaction to need to consume a large amount of water purification, subsequent disposal operation is longer.The discharge of large amount of sewage simultaneously can cause serious water pollution.
Summary of the invention
The object of the present invention is to provide a kind of polyvinyl alcohol foam plastics preparation method, should, solve original preparation method's environmental pollution and the harm problem to practitioner's health.
The present invention is achieved in that a kind of polyvinyl alcohol foam plastics preparation method, comprises step:
A. by the polyvinyl alcohol dissolution of certain mass;
B. scattered framework material is added;
C. be stirred to and mix;
D. additive is added;
E. foaming is stirred;
F. mould drying is poured into.
Further technical scheme of the present invention is: in described step B, and scattered framework material is Caulis Sacchari sinensis fiber.
Further technical scheme of the present invention is: the additive in described step D is calcium carbonate, Xylo-Mucine, sodium lauryl sulphate, sodium tetraborate.
Further technical scheme of the present invention is: described calcium carbonate: Xylo-Mucine: sodium lauryl sulphate: sodium tetraborate and polyvinyl alcohol: the ratio between Caulis Sacchari sinensis fiber is 1.5:1:0.2:2:7:9.
Further technical scheme of the present invention is: the additive in described step D is calcium carbonate: Xylo-Mucine: OP-10: sodium tetraborate.
Further technical scheme of the present invention is: described calcium carbonate: Xylo-Mucine: OP-10: sodium tetraborate and polyvinyl alcohol: the ratio between Caulis Sacchari sinensis fiber is 0.5:0.5:2:0.05:7:9.
Further technical scheme of the present invention is: in described step e, the mixing solutions of gained 1700r/min at 50 DEG C is stirred foaming 20 minutes.
Further technical scheme of the present invention is: in described step F, needs lyophilize more than 30 hours in the environment of-80 DEG C.
Further technical scheme of the present invention is: in described step F, to need in 50 DEG C of environment dry 6 hours.
The invention has the beneficial effects as follows: preparing polyvinyl alcohol foam plastics with natural fiber by this method is skeleton raw material, enhance mechanical property and the degradation property of foam, stalk simultaneously, grass class wide material sources, with low cost, avoid using starch as pore former, be conducive to resource of saving food, formaldehyde and other harmful reagent are not used in material preparation process, accomplish the requirement that environment-friendlyenergy is standby, foaming materials multiplying power is higher, for 2-4 times, can control by foaming agents content and churning time, the adjustable rate of pliability of material is high, can regulate with the content of the softening agent added, prepare the various amortizing packaging material adapting to different requirement.
Embodiment
Because linking agent formaldehyde used in existing polyvinyl alcohol foam plastics preparation process is fairly obvious to harm, formaldehyde mainly causes the irritation to organs such as eye, pharynx, noses to the impact of practitioner's health, the degree of symptom and occurrence frequency and air formaldehyde concentration in close relations, in addition, formaldehyde also can cause the neurasthenic syndromes such as giddy, headache, insomnia, allergic and except cough except other respiratory tract symptoms; (2) use starch as pore former, washed away again as refuse process after having foamed, waste precious grain resource; (3) wash away the formaldehyde of non-complete reaction, acid and starch after reaction to need to consume a large amount of water purification, subsequent disposal operation is longer.The discharge of large amount of sewage simultaneously can cause serious water pollution, and polyvinyl alcohol foam plastics preparation method of the present invention is with natural fiber, such as wheat stalk, baggasse fiber is framework material, now by the polyvinyl alcohol dissolution of certain mass, add scattered vegetable fibre again, be stirred to and mix, add softening agent (glycerine ethylene glycol), thickening material (Xylo-Mucine), nucleator (calcium carbonate, silicon-dioxide), whipping agent (AES, OP-10, K12), acid (hydrochloric acid), linking agent (sodium tetraborate), various material composition proportioning is PVA: baggasse fiber: calcium carbonate: Xylo-Mucine: sodium lauryl sulphate: sodium tetraborate=7:9:1.5:1:0.2:2 or PVA: waste paper fibre: calcium carbonate: Xylo-Mucine: OP-10: sodium tetraborate=7:9:0.5:0.5:2:0.05, often kind of reagent is for adding separately or compositely adding, gained mixing solutions is at 50 DEG C, after 1700r/min stirs foaming 20min, pour mould into,-80 DEG C of lyophilizes more than 30 hours, or drying 6 hours under the environment of 50 DEG C, the polyvinyl alcohol foam plastics prepared by this method take natural fiber as skeleton raw material, enhance mechanical property and the degradation property of foam, stalk simultaneously, grass class wide material sources, with low cost, avoid using starch as pore former, be conducive to resource of saving food, do not use formaldehyde and other harmful reagent in material preparation process, accomplish the requirement that environment-friendlyenergy is standby, foaming materials multiplying power is higher, is 2-4 times, can control by foaming agents content and churning time, the adjustable rate of pliability of material is high, can regulate with the content of the softening agent added, and prepares the various amortizing packaging material adapting to different requirement.
Claims (9)
1. a polyvinyl alcohol foam plastics preparation method, is characterized in that, comprises the following steps:
A. by the polyvinyl alcohol dissolution of certain mass;
B. scattered framework material is added;
C. be stirred to and mix;
D. additive is added;
E. foaming is stirred;
F. mould drying is poured into.
2. a kind of polyvinyl alcohol foam plastics preparation method according to claim 1, it is characterized in that: in described step B, scattered framework material is Caulis Sacchari sinensis fiber.
3. a kind of polyvinyl alcohol foam plastics preparation method according to claim 1, is characterized in that: the additive in described step D is calcium carbonate, Xylo-Mucine, sodium lauryl sulphate, sodium tetraborate.
4. a kind of polyvinyl alcohol foam plastics preparation method according to claim 3, is characterized in that: described calcium carbonate: Xylo-Mucine: sodium lauryl sulphate: sodium tetraborate and polyvinyl alcohol: the ratio between Caulis Sacchari sinensis fiber is 1.5:1:0.2:2:7:9.
5. a kind of polyvinyl alcohol foam plastics preparation method according to claim 1, is characterized in that: the additive in described step D is calcium carbonate: Xylo-Mucine: OP-10: sodium tetraborate.
6. a kind of polyvinyl alcohol foam plastics preparation method according to claim 5, is characterized in that: described calcium carbonate: Xylo-Mucine: OP-10: sodium tetraborate and polyvinyl alcohol: the ratio between Caulis Sacchari sinensis fiber is 0.5:0.5:2:0.05:7:9.
7. a kind of polyvinyl alcohol foam plastics preparation method according to claim 1, is characterized in that: in described step e, the mixing solutions of gained 1700r/min at 50 DEG C is stirred foaming 20 minutes.
8. a kind of polyvinyl alcohol foam plastics preparation method according to claim 1, is characterized in that: in described step F, needs lyophilize more than 30 hours in the environment of-80 DEG C.
9. a kind of polyvinyl alcohol foam plastics preparation method according to claim 1, is characterized in that: in described step F, to need in 50 DEG C of environment dry 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510407001.2A CN104962096A (en) | 2015-07-13 | 2015-07-13 | Preparation method of polyvinyl alcohol foamed plastics |
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| CN201510407001.2A CN104962096A (en) | 2015-07-13 | 2015-07-13 | Preparation method of polyvinyl alcohol foamed plastics |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105218867A (en) * | 2015-10-08 | 2016-01-06 | 巴斯特医药科技（常州）有限公司 | How um porous road buffering elastomer and manufacture method thereof |
| CN106633973A (en) * | 2016-10-13 | 2017-05-10 | 常州市鼎升环保科技有限公司 | Waterproof straw fiber buffering package material preparation method |
| CN111499999A (en) * | 2020-06-02 | 2020-08-07 | 河北工业大学 | Polyvinyl alcohol sponge with high tensile rate and preparation method thereof |
| CN114891359A (en) * | 2022-04-08 | 2022-08-12 | 内蒙古聚点环保餐具有限公司 | Water-resistant plant fiber board and preparation method and application thereof |
| CN115181336A (en) * | 2022-07-27 | 2022-10-14 | 湖南省富民乐建材科技发展有限公司 | Water-soluble degradable material and plug adopted in toilet caisson backfilling construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1766000A (en) * | 2004-10-25 | 2006-05-03 | 罗学刚 | Environment friendly lignin resin of high water absorbence and its preparation method |
| CN101831086A (en) * | 2010-04-23 | 2010-09-15 | 平顶山市蓝峰科技实业有限公司 | Completely-biodegradable disposable dinnerware sheets |
| CN103772733A (en) * | 2014-01-20 | 2014-05-07 | 南通天合包装有限公司 | Preparation method of plant fiber cushion packaging material |
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2015
- 2015-07-13 CN CN201510407001.2A patent/CN104962096A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766000A (en) * | 2004-10-25 | 2006-05-03 | 罗学刚 | Environment friendly lignin resin of high water absorbence and its preparation method |
| CN101831086A (en) * | 2010-04-23 | 2010-09-15 | 平顶山市蓝峰科技实业有限公司 | Completely-biodegradable disposable dinnerware sheets |
| CN103772733A (en) * | 2014-01-20 | 2014-05-07 | 南通天合包装有限公司 | Preparation method of plant fiber cushion packaging material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105218867A (en) * | 2015-10-08 | 2016-01-06 | 巴斯特医药科技（常州）有限公司 | How um porous road buffering elastomer and manufacture method thereof |
| CN106633973A (en) * | 2016-10-13 | 2017-05-10 | 常州市鼎升环保科技有限公司 | Waterproof straw fiber buffering package material preparation method |
| CN111499999A (en) * | 2020-06-02 | 2020-08-07 | 河北工业大学 | Polyvinyl alcohol sponge with high tensile rate and preparation method thereof |
| CN111499999B (en) * | 2020-06-02 | 2022-06-21 | 河北工业大学 | Polyvinyl alcohol sponge with high tensile rate and preparation method thereof |
| CN114891359A (en) * | 2022-04-08 | 2022-08-12 | 内蒙古聚点环保餐具有限公司 | Water-resistant plant fiber board and preparation method and application thereof |
| CN115181336A (en) * | 2022-07-27 | 2022-10-14 | 湖南省富民乐建材科技发展有限公司 | Water-soluble degradable material and plug adopted in toilet caisson backfilling construction |
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Application publication date: 20151007 |