CN104893201A - High-breaking-elongation fully-degradable plastic film and preparation method thereof - Google Patents
High-breaking-elongation fully-degradable plastic film and preparation method thereof Download PDFInfo
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- CN104893201A CN104893201A CN201510292958.7A CN201510292958A CN104893201A CN 104893201 A CN104893201 A CN 104893201A CN 201510292958 A CN201510292958 A CN 201510292958A CN 104893201 A CN104893201 A CN 104893201A
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Abstract
The invention discloses a high-breaking-elongation fully-degradable plastic film, wherein polyvinyl alcohol and wheat protein powder serve as main film-forming substances. Compared with the traditional technology, nano-silica and the wheat protein powder are modified by a physical-chemical method and other active components are interacted, so that hydroxyl groups of the wheat protein powder and the polyvinyl alcohol molecules are preferentially combined with the hydroxyls on the surfaces of a proper amount of nano-silica to form hydrogen bonds, the compatibility degree of the wheat protein powder and the polyvinyl alcohol is increased, the water resistance of the film is improved, the prepared fully-degradable plastic film has the characteristics of gas permeability, biological full degradability, high tensile strength and excellent breaking elongation, and the product truly meets the market requirement of green environment-friendly plastic.
Description
Technical field
The present invention relates to natural macromolecular material technical field, be specifically related to high Based Full-degradable Plastics Film of a kind of elongation at break and preparation method thereof.
Background technology
Synthesized polymer material also causes serious pollution to environment while bringing great convenience to the life of people, in addition the continuous minimizing of the prospective oil of conventional plastic is manufactured, thus reproducible eco-friendly natural macromolecular material becomes the focus of research, Mierocrystalline cellulose, starch, protein etc. are current practical study and apply more natural polymer, so natural polymer subtype Wholly-degradable material becomes one of study hotspot of novel environmental friendly material.
Natural polymer because its raw material sources are wide, biodegradability is strong and film forming properties excellence is subject to extensive concern in food product pack and mulch film Application Areas.But, the feature due to natural polymer itself: its range of application of the drawbacks limit such as poor processability, fragility are very much not water-fast.Often adopt plasticising for addressing this problem, acid adjusted, crosslinked, fill or the single method of modifying such as blended, but this single method of modifying is limited, the Based Full-degradable Plastics Film function singleness prepared and cost is high cannot realize its suitability for industrialized production.Nanometer silicon dioxide material has the special functional effect of nanoparticle, improve separately natural macromolecule membrane and PVA (PVOH) FILM mechanical property and water resistance aspect with it and all have obvious effect, and few with the research report of nano-silicon dioxide modified natural polymer and polyvinyl alcohol compound film.
Summary of the invention
Object of the present invention is just to provide high Based Full-degradable Plastics Film of a kind of elongation at break and preparation method thereof, to overcome the deficiencies in the prior art.
The object of the present invention is achieved like this:
The Based Full-degradable Plastics Film that a kind of elongation at break is high, it is characterized in that, be made up of the raw material of following weight part: polyvinyl alcohol 98-115, gluten powder 45-55, tapioca (flour) 25-35, kaolin 0.7-1.4, hexahydro phthalic anhydride 2.2-4.3, nano silicon 1.1-2.3, borax 0.4-0.7, silane coupling agent KH-560 7-9, jute fibre 5-8, Tai-Ace S 150 0.2-0.4, suitable quantity of water.
The preparation method of the Based Full-degradable Plastics Film that described a kind of elongation at break is high, is characterized in that comprising the following steps:
(1) gluten powder, tapioca (flour) are added suitable quantity of water and stir into paste, heating pre-gelatinized process 10-20 minute, add Tai-Ace S 150, hexahydro phthalic anhydride, constant temperature is uniformly mixed 2-3h, and suction filtration dries to obtain modified wheat protein powder naturally;
(2) by jute fibre vacuum-drying 2-4 hour at 105 DEG C, add silane coupling agent KH-560, nano silicon agitation grinding 2-3 hour, dry;
(3) polyvinyl alcohol is put into 80-90 DEG C of water-bath and be incubated 30-40 minute, add step (1), (2) material in 55-65 DEG C of water-bath 40-50 minute, then add other remaining components stirring 1-2 hour, put into twin screw extruder granulation;
(4) particle obtained for step (3) is poured in inflation film manufacturing machine at 140-170 DEG C, carry out blown film.
The present invention has following beneficial effect: the present invention adopts polyvinyl alcohol and gluten powder to be main film forming substance, compare the present invention to carry out modification by physico-chemical process to nano silicon and gluten powder coordinate other effective constituents to cooperatively interact simultaneously with traditional technology, hydroxyl in gluten powder and polyvinyl alcohol molecule is made to understand preferential and proper amount of nano silica sphere hydroxy combining formation hydrogen bond, increase the compatibility of gluten powder and polyvinyl alcohol, improve film water tolerance, obtained Based Full-degradable Plastics Film has ventilative, fully bio-degradable, the feature that tensile strength is high and elongation at break is excellent, allow the market requirement meeting environmental protection plastics that this product is real.
Embodiment
The Based Full-degradable Plastics Film that described a kind of elongation at break is high, it is characterized in that, be made up of the raw material of following weight part: polyvinyl alcohol 115, gluten powder 47, tapioca (flour) 33, kaolin 1.4, hexahydro phthalic anhydride 2.4, nano silicon 1.7, borax 0.6, silane coupling agent KH-560 8, jute fibre 6, Tai-Ace S 150 0.3, suitable quantity of water.
Making method comprises the following steps:
(1) gluten powder, tapioca (flour) are added suitable quantity of water and stir into paste, heating pre-gelatinized process 10-20 minute, add Tai-Ace S 150, hexahydro phthalic anhydride, constant temperature is uniformly mixed 2-3h, and suction filtration dries to obtain modified wheat protein powder naturally;
(2) by jute fibre vacuum-drying 2-4 hour at 105 DEG C, add silane coupling agent KH-560, nano silicon agitation grinding 2-3 hour, dry;
(3) polyvinyl alcohol is put into 80-90 DEG C of water-bath and be incubated 30-40 minute, add step (1), (2) material in 55-65 DEG C of water-bath 40-50 minute, then add other remaining components stirring 1-2 hour, put into twin screw extruder granulation;
(4) particle obtained for step (3) is poured in inflation film manufacturing machine at 140-170 DEG C, carry out blown film.
The technical parameter index of the Based Full-degradable Plastics Film using the present invention to produce is as follows: tensile strength is 9.82MPa, and elongation at break is 89.94%, and water-intake rate is 49.05%.
Claims (2)
1. the Based Full-degradable Plastics Film that an elongation at break is high, it is characterized in that, be made up of the raw material of following weight part: polyvinyl alcohol 98-115, gluten powder 45-55, tapioca (flour) 25-35, kaolin 0.7-1.4, hexahydro phthalic anhydride 2.2-4.3, nano silicon 1.1-2.3, borax 0.4-0.7, silane coupling agent KH-560 7-9, jute fibre 5-8, Tai-Ace S 150 0.2-0.4, suitable quantity of water.
2. the making method of the Based Full-degradable Plastics Film that a kind of elongation at break according to claim 1 is high, is characterized in that comprising the following steps:
(1) gluten powder, tapioca (flour) are added suitable quantity of water and stir into paste, heating pre-gelatinized process 10-20 minute, add Tai-Ace S 150, hexahydro phthalic anhydride, constant temperature is uniformly mixed 2-3h, and suction filtration dries to obtain modified wheat protein powder naturally;
(2) by jute fibre vacuum-drying 2-4 hour at 105 DEG C, add silane coupling agent KH-560, nano silicon agitation grinding 2-3 hour, dry;
(3) polyvinyl alcohol is put into 80-90 DEG C of water-bath and be incubated 30-40 minute, add step (1), (2) material in 55-65 DEG C of water-bath 40-50 minute, then add other remaining components stirring 1-2 hour, put into twin screw extruder granulation;
(4) particle obtained for step (3) is poured in inflation film manufacturing machine at 140-170 DEG C, carry out blown film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292958.7A CN104893201A (en) | 2015-06-02 | 2015-06-02 | High-breaking-elongation fully-degradable plastic film and preparation method thereof |
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| CN201510292958.7A CN104893201A (en) | 2015-06-02 | 2015-06-02 | High-breaking-elongation fully-degradable plastic film and preparation method thereof |
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| CN104893201A true CN104893201A (en) | 2015-09-09 |
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| CN201510292958.7A Pending CN104893201A (en) | 2015-06-02 | 2015-06-02 | High-breaking-elongation fully-degradable plastic film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105218995A (en) * | 2015-11-09 | 2016-01-06 | 长沙奥佳信息科技有限公司 | The Based Full-degradable Plastics Film that a kind of elongation at break is high |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031026A (en) * | 2011-10-08 | 2013-04-10 | 常熟市屹浩食品包装材料有限公司 | Polyvinyl alcohol radical composite coating fresh keeping packaging material nano TiO2 functional modification method |
| CN103289131A (en) * | 2013-05-22 | 2013-09-11 | 南京财经大学 | Preparation method for starch-polyvinyl alcohol biologically-cross-linked nano-composite plastic film |
| CN103304851A (en) * | 2013-07-07 | 2013-09-18 | 华东理工大学 | High-starch-content waterproof totally-decomposed composite material and preparation method thereof |
| CN104109263A (en) * | 2014-06-30 | 2014-10-22 | 安徽巢湖南方膜业有限责任公司 | Starch-polyvinyl alcohol dual-degradationplastic film |
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2015
- 2015-06-02 CN CN201510292958.7A patent/CN104893201A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031026A (en) * | 2011-10-08 | 2013-04-10 | 常熟市屹浩食品包装材料有限公司 | Polyvinyl alcohol radical composite coating fresh keeping packaging material nano TiO2 functional modification method |
| CN103289131A (en) * | 2013-05-22 | 2013-09-11 | 南京财经大学 | Preparation method for starch-polyvinyl alcohol biologically-cross-linked nano-composite plastic film |
| CN103304851A (en) * | 2013-07-07 | 2013-09-18 | 华东理工大学 | High-starch-content waterproof totally-decomposed composite material and preparation method thereof |
| CN104109263A (en) * | 2014-06-30 | 2014-10-22 | 安徽巢湖南方膜业有限责任公司 | Starch-polyvinyl alcohol dual-degradationplastic film |
Non-Patent Citations (1)
| Title |
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| 孟祥胜，王鹏，毛桂洁: ""聚乙烯醇纳米二氧化硅复合薄膜的制备及性能"", 《高分子材料科学与工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105218995A (en) * | 2015-11-09 | 2016-01-06 | 长沙奥佳信息科技有限公司 | The Based Full-degradable Plastics Film that a kind of elongation at break is high |
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Application publication date: 20150909 |