CN101699973B - Method for producing crystal whisker reinforced polyethylene ground film for tobacco in plateau areas - Google Patents
Method for producing crystal whisker reinforced polyethylene ground film for tobacco in plateau areas Download PDFInfo
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- CN101699973B CN101699973B CN2009100951222A CN200910095122A CN101699973B CN 101699973 B CN101699973 B CN 101699973B CN 2009100951222 A CN2009100951222 A CN 2009100951222A CN 200910095122 A CN200910095122 A CN 200910095122A CN 101699973 B CN101699973 B CN 101699973B
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Abstract
The invention relates to a method for producing a crystal whisker reinforced polyethylene ground film for tobacco in plateau areas. The crystal whisker reinforced polyethylene ground film is prepared from the following materials in parts by mass: 85-95 parts of polyethylene resin, 1-10 parts of crystal whisker reinforced polyethylene mother material and 1-5 parts of ultraviolet-resisting mother material. The method comprises the following sequential preparation steps of: firstly, adding the polyethylene resin, the crystal whisker reinforced polyethylene mother material and the ultraviolet-resisting mother material into a mixing machine, mixing for 5-10 minutes and stirring evenly; delivering the mixture into a ground film extrusion blow-molding machine for extrusion blow-molding formation at the extrusion temperature of 120-205 DEG C and heating by a mode of electromagnetic vibration heating plastication blow molding; and preparing an extrusion blow-molding film into the crystal whisker reinforced polyethylene ground film for the tobacco in the plateau areas by wind cooling, traction and coiling. The invention solves the problems of low strength, easy aging and difficult recycling of the ground film for the tobacco in the plateau areas at present.
Description
Technical field
The present invention relates to the production method of cigarette blow moulded polyethyene mulch film, particularly a kind of crystal whisker reinforced polyethylene ground film for tobacco in plateau areas.
Background technology
Plastic film mulching cultivation is a new cultivation technique that improves crops quality and output, and it has effects such as insulation, soil moisture conservation and frost protection.Plastic mulching cultivation technology is increasing substantially crop products, when promoting agricultural development, has also brought new " white pollution " to agricultural production.For solving " white pollution " problem, mainly contain two kinds of methods, the one, the biodegradation of plastic film; The 2nd, the recycling of mulch film.Although the research and development of Biodegradable mulch have obtained a series of achievements, a large amount of so far acquisition agriculturals are used, and mainly are that the production application cost is higher relatively.And the recycling of mulch film is the processing that relatively is suitable at present and use effective means.But because mulch film through after the culture underglass, owing to be subjected to the effect of day Hou Laohua, causes its physical and mechanical properties to descend, wear out, cause fracture fragmentation easily when reclaiming, thereby reduced the rate of recovery, and some residual in the field have been arranged, accumulated that for many years soil texture is worked the mischief.Therefore, the high-performance of ground membrane material and low cost become the problem that mulch film manufacturing enterprise generally is concerned about.
Tobacco is one of the main pillar industry in Yunnan, and plastic film mulching cultivation widely uses in the our province tobacco cultivation.Cigarette can improve yield of tobacco about 15% with plastic film mulching cultivation, and average price improves about 10%.The area, Yunnan that is located in the Yunnan-Guizhou Plateau, its geographical position is area above sea level, low latitude plateau, the solar ultraviolet exposure intensity is higher relatively.At present traditional cigarette is applied to tobacco cultivation with mulch film in the highlands, cigarette occurs and descends very fast, easily aging and cause mulch film broken morning, the situation that is difficult to recycle with mulch film physical and mechanical properties intensity.In addition, cigarette is with the thickness characteristics thinner than other agricultural mulching of mulch film in addition, thereby brings bigger difficulty to tobacco in plateau areas with the recycling of mulch film.Therefore, in the face of the problems referred to above, develop a kind of highlands that is adapted to and use, it is higher to have intensity, and the cigarette of anti-day Hou Laohua has become the task of top priority with mulch film.
Domestic strength character and anti-day marquis's ageing properties for improving mulch film, group of Xingjiang Tianye Co. has applied for the patent (CN1978512) of the nano-material modified mulch film of anti-marquis, it mainly adds nano-calcium carbonate masterbatch and antioxidant in the polyethylene ground film material.Although improved ground film strength and weather resisteant to a certain extent, simultaneously because the decline of transparency causes the also corresponding reduction of serviceability and addition also less relatively, it mainly uses cotton and other arable farming of Xinjiang region.About the high strength, the uvioresistant that are suitable for highlands tobacco cultivation, polyethylene ground film for tobacco is domestic does not cheaply appear in the newspapers.
Summary of the invention:
The object of the present invention is to provide a kind of production method of crystal whisker reinforced polyethylene ground film for tobacco in plateau areas, it is low, easily aging to solve present tobacco in plateau areas land used film-strength, the problem that is not easy to recycle.
The present invention is achieved in that
A kind of production method of crystal whisker reinforced polyethylene ground film for tobacco in plateau areas is characterized in that being made by the material of following mass parts: 85～95 parts of polyvinyl resins, and whisker strengthens 1～10 part of polyethylene masterbatch, 1～5 part of ultraviolet-resistance masterbatch, preparation process is in proper order:
(1) at first polyvinyl resin, whisker enhancing polyethylene masterbatch and ultraviolet-resistance masterbatch add in the mixer and mix 5～10 minutes to stirring;
(2) compound is sent into extrusion and blow molding in the mulch film extrusion blow molding machine, extrusion temperature is at 120～205 ℃, and mode of heating adopts the blowing of electric and magnetic oscillation heating plasticizing;
(3) the extrusion-blown modling film through air-cooled, draw and batch and make crystal whisker reinforced polyethylene ground film for tobacco in plateau areas.
Described polyvinyl resin is one or more mixtures in LLDPE or low density polyethylene (LDPE) or the high density polyethylene (HDPE).
Described polyvinyl resin is made up of 85～95 parts LLDPE and 5～15 parts low density polyethylene (LDPE) or 0～5 part high density polyethylene (HDPE).
It is that magnesium salt whisker strengthens the polyethylene masterbatch that described whisker strengthens the polyethylene masterbatch.
Described ultraviolet-resistance masterbatch is an inorganic anti ultraviolet ray polyethylene masterbatch.
The present invention according to highlands tobacco cultivation during the ultraviolet ray irradiation strong, the ground film-strength descends fast, the deficiency of anti-day marquis's aging, and be convenient to the angle of recycling with mulch film from cigarette, guaranteeing the insulation of cigarette with film-mulching cultivation, under the prerequisite of soil moisture conservation and increase illumination, whisker strengthens the polyethylene masterbatch and anti-outside line masterbatch improves cigarette land used film strength performance and anti-ultraviolet property by adding, reduce production costs to a certain extent simultaneously, realize the high-performance and low-costization of polyethylene ground film for tobacco in plateau areas, and be beneficial to the recycling of highlands mulch film, the destruction that alleviates mulch film environmental pollution and soil.
What the said whisker of the present invention strengthened that masterbatch is that magnesium salt whisker strengthens is carrier with the polyethylene, and the whisker that has added coupling agent, dispersant and lubricant strengthens the polyethylene masterbatch.After this whisker masterbatch adding cigarette was used in the mulch film polythene material, to the mechanical property of cigarette with mulch film, especially strength character made moderate progress.
The said ultraviolet-resistance masterbatch of the present invention is meant and added the ultraviolet masterbatch of inorganic anti, and is carrier with the polyethylene.Inorganic UV resistant agent is a kind of mixture that titanium dioxide, zinc oxide and light stabilizer are formed.After this ultraviolet-resistance masterbatch additive is used the mulch film polythene material to cigarette, can improve anti-ultraviolet aging ability, the inhibition light aging process of cigarette with mulch film, prolong cigarette and use the service life of mulch film, especially can improve anti-day Hou Laohua (uvioresistant) performance of cigarette with mulch film, just along with in the cultivation of mulch film ground, along with the prolongation of service time, every performance indications decay of mulch film is slower.
The used whisker of the present invention strengthens the polyethylene masterbatch and ultraviolet-resistance masterbatch can be made by oneself, also can directly buy application from the market.
Cigarette of the present invention strengthens the polyethylene masterbatch with mulch film owing to added whisker in preparation, and can improve the dispersiveness of mixed material, improves product opening and physical mechanical strength performance, simultaneously the blow molding processability is also improved.Because whisker strengthens masterbatch and ultraviolet-resistance masterbatch is used according to a certain percentage, therefore, when improving cigarette land used film-strength performance, also improved anti-uv-ray, just improve cigarette land used film strength and anti-day marquis's property simultaneously.Because the raising of two performances is recycled with mulch film cigarette, reduce production costs, the pollution abatement thing all plays a positive role.
Matrix resin adopts three kinds of resins and uses and can remedy the deficiency of using single resin to exist on some performance.Although as the LLDPE good combination property, by and can further improve its processing characteristics with low density polyethylene (LDPE), adopt high density polyethylene (HDPE) then can improve its transparency and strength character.Therefore matrix resin adopts ternary and with realizing that performance is a best of breed, further improve cigarette with the combination property of mulch film, reduce production costs, improve the recovery utilization rate after the use, preserve the ecological environment.
Remarkable advantage of the present invention is to have improved the strength character and the anti-ultraviolet aging performance of product, and reduced production cost under the prerequisite that cigarette uses with mulch film guaranteeing, helps cultivating the recycling behind the tobacco, alleviates environmental pollution.This cigarette is specially adapted to the tobacco cultivation of highlands with mulch film, and is especially more suitable to tobacco planting Da Sheng Yunnan.
The specific embodiment:
Embodiment 1
The present invention is made up of the raw material that contains following mass parts: 90 parts of LLDPEs; 3 parts of high density polyethylene (HDPE)s; 7 parts of low density polyethylene (LDPE)s; Whisker strengthens 5 parts of polyethylene masterbatch; 1.5 parts of ultraviolet-resistance masterbatch.
The melt index of LLDPE is 2.0g/10min, as the DFDA7042 of Maoming petro-chemical corporation.
High density polyethylene (HDPE) and low density polyethylene (LDPE) are selected the polyethylene kind of blowing film-grade respectively for use; Low density polyethylene (LDPE) is LDPE2426, and high density polyethylene (HDPE) is HDPETR144.
Its preparation method is at first above-mentioned each component to be dropped in the mixer to mix, be stored in bin stock then and irritate, then deliver to blowing by feed appliance and squeeze in the storage bin(hopper) of machine, the extruder model is DMJ～65 * 30, southwest peak machinery plant produces, and mode of heating is the Electromagnetic Dynamic heating.The extruder extrusion temperature is provided with one section 200～205 ℃, two sections 190～195 ℃, three sections 195～205 ℃, four sections 185～190 ℃, the extrusion neck ring mold diameter is 200mm, through fusion plastification, extrude by mixing by the extruder hopper for compound, and blown film, air-cooled, traction are extruded mulch film to extrude width be that 900mm or 1000mm, thickness are 0.006mm or 0.008mm to rolling the preparation crystal whisker reinforced polyethylene ground film for tobacco in plateau areas.
Cigarette land used film properties by the present invention's preparation sees Table 1
Embodiment 2
The present invention is made up of the raw material that contains following quality component: 95 parts of LLDPEs; 2 parts of high density polyethylene (HDPE)s; 3 parts of low density polyethylene (LDPE)s, whisker strengthens 8 parts of masterbatch; 2.5 parts of ultraviolet-resistance masterbatch.
The preparation method is with embodiment 1, and the ground film properties sees Table 1.
Embodiment 3
The present invention is made up of the raw material that contains following quality component: 85 parts of LLDPEs; 5 parts of high density polyethylene (HDPE)s; 10 parts of low density polyethylene (LDPE)s; Whisker strengthens 3 parts of masterbatch; 3.5 parts of ultraviolet screening mother granules.
The preparation method is with embodiment 1, and the ground film properties sees Table 1.
Table 1 embodiment of the invention ground film properties
| Physical property | Unit | Reference examples | Embodiment 1 | Embodiment 2 | Embodiment 3 | JC/T238～2008 specification requirements |
| Hot strength, vertical/horizontal stroke | N | 1.8/1.4 | 2.2/1.9 | 2.3/2.0 | 2.1/1.8 | ≥1.0 |
| Elongation at break, vertical/horizontal stroke | ％ | 466/750 | 424/710 | 436/720 | 466/742 | ≥150 |
| The right-angle tearing load, vertical/horizontal stroke | N | 0.6/0.7 | 0.8/1.9 | 0.9/0.9 | 0.8/0.9 | ≥0.5 |
Annotate: performance measurement is pressed cigarette and is surveyed with blow-molding polyethylene mulch film JC/J238～2008 standards, and cigarette land used film thickness is 0.006mm.
Claims (1)
1. the production method of a crystal whisker reinforced polyethylene ground film for tobacco in plateau areas, it is characterized in that making: 85～95 parts of polyvinyl resins by the material of following mass parts, whisker strengthens 1～10 part of polyethylene masterbatch, 1～5 part of ultraviolet-resistance masterbatch, and the preparation process order is as follows
(1) polyvinyl resin, whisker enhancing polyethylene masterbatch and ultraviolet-resistance masterbatch add and mix 5 ~ 10 minutes in the mixer to stirring, and get compound;
(2) compound is sent into extrusion and blow molding in the mulch film extrusion blow molding machine, extrusion temperature is at 120～205 ℃, and mode of heating adopts the blowing of electric and magnetic oscillation heating plasticizing;
(3) the extrusion-blown modling film through air-cooled, draw and batch and make crystal whisker reinforced polyethylene ground film for tobacco in plateau areas;
Described polyvinyl resin is one or more mixtures in LLDPE or low density polyethylene (LDPE) or the high density polyethylene (HDPE);
It is that magnesium salt whisker strengthens the polyethylene masterbatch that described whisker strengthens the polyethylene masterbatch;
Described ultraviolet-resistance masterbatch is an inorganic anti ultraviolet ray polyethylene masterbatch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100951222A CN101699973B (en) | 2009-10-30 | 2009-10-30 | Method for producing crystal whisker reinforced polyethylene ground film for tobacco in plateau areas |
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| CN2009100951222A CN101699973B (en) | 2009-10-30 | 2009-10-30 | Method for producing crystal whisker reinforced polyethylene ground film for tobacco in plateau areas |
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| CN101699973A CN101699973A (en) | 2010-05-05 |
| CN101699973B true CN101699973B (en) | 2011-10-26 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101831101B (en) * | 2010-05-11 | 2012-09-19 | 界首市龙盛塑业有限公司 | Preparation method for producing automobile awning special material by using waste plastics |
| CN102241853B (en) * | 2011-04-18 | 2012-10-24 | 刘立文 | Calcium-whisker-modified polyethylene composite material and preparation method thereof |
| CN103112184A (en) * | 2013-02-07 | 2013-05-22 | 河南省银丰塑料有限公司 | Preparation process of one-time fused and regenerated polyethylene agricultural plastic mulching film |
| CN104945708A (en) * | 2015-06-08 | 2015-09-30 | 安徽省金正塑业有限公司 | Plastic mulching film capable of killing pests |
| CN111704766A (en) * | 2020-07-16 | 2020-09-25 | 陕西富隆新塑材有限公司 | High-strength polyethylene agricultural mulching film and preparation method thereof |
| CN111763369A (en) * | 2020-07-16 | 2020-10-13 | 杨凌瑞丰环保科技有限公司 | High-strength recyclable polyethylene mulching film for facility agriculture and preparation method thereof |
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