CN103450539B - Degradable polyethylene modified material and preparation method thereof - Google Patents
Degradable polyethylene modified material and preparation method thereof Download PDFInfo
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- CN103450539B CN103450539B CN201310402682.4A CN201310402682A CN103450539B CN 103450539 B CN103450539 B CN 103450539B CN 201310402682 A CN201310402682 A CN 201310402682A CN 103450539 B CN103450539 B CN 103450539B
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- polyethylene
- plastic bag
- degradable
- disposable
- calcium carbonate
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- 229920000573 polyethylene Polymers 0.000 title claims abstract description 44
- -1 polyethylene Polymers 0.000 title claims abstract description 44
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 32
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 21
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 21
- LUEWUZLMQUOBSB-FSKGGBMCSA-N (2s,3s,4s,5s,6r)-2-[(2r,3s,4r,5r,6s)-6-[(2r,3s,4r,5s,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5s,6r)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](OC3[C@H](O[C@@H](O)[C@@H](O)[C@H]3O)CO)[C@@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-FSKGGBMCSA-N 0.000 claims abstract description 16
- 229920002581 Glucomannan Polymers 0.000 claims abstract description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 16
- 229940046240 glucomannan Drugs 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000005453 pelletization Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 abstract description 41
- 239000004033 plastic Substances 0.000 abstract description 41
- 229920006238 degradable plastic Polymers 0.000 abstract description 14
- 235000001206 Amorphophallus rivieri Nutrition 0.000 abstract description 5
- 229920002752 Konjac Polymers 0.000 abstract description 5
- 239000000252 konjac Substances 0.000 abstract description 5
- 235000010485 konjac Nutrition 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 5
- 239000010794 food waste Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007639 printing Methods 0.000 abstract description 3
- 238000005187 foaming Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 244000247812 Amorphophallus rivieri Species 0.000 abstract 4
- 229920002261 Corn starch Polymers 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 239000008120 corn starch Substances 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 10
- 239000002250 absorbent Substances 0.000 description 8
- 238000009413 insulation Methods 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 239000004902 Softening Agent Substances 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 239000012792 core layer Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000002345 surface coating layer Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 235000010216 calcium carbonate Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000001095 magnesium carbonate Substances 0.000 description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 3
- 235000014380 magnesium carbonate Nutrition 0.000 description 3
- 229960001708 magnesium carbonate Drugs 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000006303 photolysis reaction Methods 0.000 description 3
- 230000015843 photosynthesis, light reaction Effects 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241001312219 Amorphophallus konjac Species 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical class [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Refuse Receptacles (AREA)
Abstract
The invention relates to a degradable polyethylene modified material and a preparation method thereof. The degradable polyethylene modified material is mainly applied to the production of a disposable degradable plastic bag and is mainly prepared from high-density polyethylene, calcium carbonate, konjac glucomannan, corn starch and a foaming agent. Due to the water retentivity of the konjac glucomannan, the disposable degradable plastic bag prepared from the degradable polyethylene modified material can be maintained in a relative drying state, so that the deterioration and the smelliness of food wastes contained in the disposable degradable plastic bag are difficult to occur. Meanwhile, the disposable degradable plastic bag has stronger toughness due to the addition of the konjac glucomannan, so that the disposable degradable plastic bag is difficult to break. The disposable degradable plastic bag is easy to degrade by taking the konjac glucomannan as a raw material, so that the environment pollution is avoided. The plastic bag commonly used in the existing market is prepared from a single plastic polymer, so that character writing or printing on the plastic bag cannot be carried out. The disposable degradable plastic bag provided by the invention is molded in a blowing manner by using a foaming technique, so that the character writing or the pattern printing on the disposable degradable plastic bag can be carried out.
Description
Technical field
The present invention relates to a kind of polythene material and preparation method thereof, it is material modified and preparation method thereof to be specifically related to a kind of degradable polyethylene.
Background technology
Plastics are a kind of macromolecular materials, take oil as a series of high polymers that raw material can obtain.Such as, polyethylene, polypropylene, polyvinyl chloride.Plastics bag used is at present formed by many material formulations, wherein high molecular polymer (or claiming synthetic resins) is the main component of plastics, in addition, in order to improve the performance of plastics, also to add various subsidiary material in the polymer, as filler, softening agent, lubricant, stablizer, tinting material etc., just plastics of good performance can be become.1, synthetic resins synthetic resins is the main composition of plastics, and its content is in the plastic generally 40% ~ 100%, and most plastics, except main ingredient resin, also need to add other materials.2, filler filler is weighting agent again, and it can improve intensity and the resistance toheat of plastics, and reduces costs.Greatly can reduce costs after such as, adding wood powder in resol, make phenoplast become one of the most cheap plastics, can also physical strength be significantly improved simultaneously.Filler can be divided into organic filler and mineral filler two class, and the former is as wood powder, cloth waste, paper and various fabric fibres etc., and the latter is as glass fibre, diatomite, asbestos, carbon black etc.3, elasticizer plasticizing agent can increase plasticity-and the flexibility of plastics, reduces fragility, makes plastics be easy to machine-shaping.Softening agent is generally energy and resin miscible, and nontoxic, odorless, to light, heat-staple high boiling point organic compound, the most frequently used is phthalate.Such as, when producing igelite, if add more softening agent just can obtain soft PVC plastics, if do not add or add less softening agent (consumption <10%), then obtain rigid PVC.4, stablizer is in order to the action breaks and the destruction that prevent synthetic resins to be subject to light and heat in processing and use procedure, increases the service life, will add stablizer in the plastic.Conventional has stearate, epoxy resin etc.5, Colorant Colorants can make plastics have various color bright-coloured, attractive in appearance.Conventional organic dye and mineral dye are as tinting material.6, the effect of lubricants prevents plastics not to be bonded on metal die when shaping, the smooth surface of plastics can be made attractive in appearance simultaneously.Conventional lubricant has stearic acid and calcium magnesium salts etc. thereof.
Uni-Charm Co., Ltd. succeeds in developing a kind of photolysis plastics bag, after filling waste disposal, can under the effect of light disintegrate.Be used for producing the photolysis plastics of this refuse bag, be polymerized by ethene and carbon monoxide and make, after ultraviolet in its contact sunlight, oxygen is combined with ethene, and the combination with oxygen of outside is come in, and carbon monoxide becomes carbonic acid gas, then be dispersed in air, thus poly combination is damaged, plastic garbage bag just becomes Powdered, photolysis voluntarily.But plastics bag slack powder needs three months.
Application number is patent of invention " a kind of Environmental protection bag " (applying date: 2011.11.04) of 201110344082, concretely, relates to a kind of Environmental protection bag.By internal layer, thermal insulation layer, middle layer, carry that belt forms; Environmental protection bag is followed successively by internal layer, thermal insulation layer, middle layer from inside to outside and carries belt, internal layer is made by having waterproof antiwear material, molten heat insulation liquid is filled in thermal insulation layer, the material in middle layer is identical with the material of internal layer, Environmental protection bag is that degradation material is made, overcome the shortcoming of disposable plastic bag contaminate environment, the insulation construction of increase and carry belt, realize recycling and insulation.
Application number is patent of invention " the Water-absorbing degradable plastic bag " (applying date: 2010. 12.17) provide a kind of Water-absorbing degradable plastic bag of 201010595077, from the inside to the outside by surface coating layer bottom plastics bag, absorbent core layer and plastics bag body three part composition, four limits of surface coating layer and plastics bag body are by heating adhesion.The present invention increases one deck super absorbent resin in the bottom of existing plastics bag, be fixed on bottom plastics bag by surface coating layer, waste water in plastics is subject to action of gravity and flows down along bag wall, accumulate at the bottom of bag, absorbent core layer absorbs, whole plastics bag keeps comparatively dry state, and the food waste accommodated in bag is not easy to go bad, smelly.Owing to adding absorbent core layer and surface coating layer, make bottom the plastics bag of main load-bearing more firm, not cracky.Adopt polyethylene modified material as plastics bag body, can natural degradation, reduce white pollution.But adding absorbent core layer causes cost to increase.
Summary of the invention
It is material modified and preparation method thereof that main purpose of the present invention is to provide a kind of degradable polyethylene mainly for the production of disposable degradable plastics bag.
The material modified preparation method of degradable polyethylene of the present invention, is characterized in that operation steps is as follows:
1, high density polyethylene(HDPE), calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent are added in mixing machine and mixes, obtain polyethylene mixture; The weight percent of described high density polyethylene(HDPE), calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent and polyethylene mixture is respectively 49.8% ~ 69.8%, 2% ~ 30%, 9% ~ 10%, 1% ~ 10%, 0.2%, the weight percent summation of each raw material and polyethylene mixture is 100%; Described whipping agent is generally carbonate, as calcium carbonate, and magnesiumcarbonate, sodium bicarbonate, water glass, silicon carbide, carbon black Described high density polyethylene(HDPE) refers to that density is 0.946 ~ 0.976g/cm
3polyethylene;
2, it is mixing in the twin screw extruder of 300 ~ 350 revs/min for the polyethylene mixture obtained in step 1 being added rotating speed, twin screw extruder has six sections, the extrusion temperature of first paragraph and second segment is 170 ~ 190 DEG C, and other each section of extrusion temperature is 190 ~ 220 DEG C;
3, the material cooling after step 2 being extruded, pelletizing.
Also the degradable polyethylene prepared of protection aforesaid method is material modified in the present invention.
The present invention has the following advantages: because Rhizoma amorphophalli glucomannan has water-retentivity, use the disposable degradable plastics bag of the material modified preparation of degradable polyethylene of the present invention, can make the state that whole plastics bag keeps comparatively dry, the food waste wherein held is not easy to go bad, smelly.Meanwhile, make plastics bag more flexible owing to adding Rhizoma amorphophalli glucomannan, not easily broken.Konjac glucomanna is used easily to degrade as raw material, avoid environment, the plastics bag now commercially used adopts single plastic polymer to make, bag surface does not have gap, smoothly therefore not there is water-absorbent, oil absorbency, therefore cannot writing words or printing, degradable polyethylene of the present invention material modified employing foam process blow molding, in foaming process, calcium carbonate is dispersed in plastics bag raw material equably, and then these calcium carbonate just can form the gap be invisible to the naked eye in the Bag structure of shaping plastics bag, plastics bag is made to be had suitable water-absorbent, oil absorbency, therefore can at writing words or printed patterns above.
Use that degradable polyethylene of the present invention is material modified prepares disposable degradable plastics bag, have excellent film-forming properties, water-retentivity, water-absorbent and tensile strength is large, snappiness is good; Compared with the polythene material that use is single, its tensile strength is high, soaking effect good, can remain on longer weight bearing situations; Fully biodegradable, environmental protection low-carbon (LC); Energy water suction, moisturizing, and nontoxic high temperature resistant, and the food of direct contact food or comparatively high temps also can not cause the toxin transport phenomena of material; External additive color have certain retention; And its production technique is simple, draw materials conveniently, cheap.
Embodiment
Below in conjunction with embodiment, the present invention is further elaborated.
Embodiment 1: the preparation method that a kind of degradable polyethylene is material modified
The preparation method that degradable polyethylene is material modified, comprises the following steps:
, high density polyethylene(HDPE), calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent are added in mixing machine and mix, obtain polyethylene mixture; The weight percent of described high density polyethylene(HDPE), calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent and polyethylene mixture is respectively 49.8%, 30%, 10%, 10% and 0.2%;
2, it is mixing in the twin screw extruder of 300 ~ 350 revs/min that polyethylene mixture step 1 obtained adds rotating speed, and first paragraph and the second segment extrusion temperature of setting twin screw extruder are 180 DEG C, and other each section of extrusion temperature is 200 DEG C;
3, material step 2 extruded is cooled to room temperature, pelletizing.
The whipping agent that the present embodiment is selected is calcium carbonate or magnesiumcarbonate or sodium bicarbonate or water glass or silicon carbide or carbon black.
Embodiment 2: the preparation method that a kind of degradable polyethylene is material modified
The preparation method that degradable polyethylene is material modified, comprises the following steps:
, high density polyethylene(HDPE), calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent are added in mixing machine and mix, obtain polyethylene mixture; The weight percent of described polyethylene, calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent and polyethylene mixture is respectively 69.8%, 20%, 9%, 1% and 0.2%;
2, it is mixing in the twin screw extruder of 300 ~ 350 revs/min for the polyethylene mixture obtained in step 1 being added rotating speed, and the first paragraph of twin screw extruder and second segment extrusion temperature are 170 DEG C, and other each section of extrusion temperature is 210 DEG C;
3, material step 2 extruded is cooled to room temperature, pelletizing.
The whipping agent that the present embodiment is selected is calcium carbonate or magnesiumcarbonate or sodium bicarbonate or water glass or silicon carbide or carbon black.
Degradable polyethylene of the present invention is material modified, can be used for making disposable degradable plastics bag, various domestic food bag and refuse bag.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. the material modified preparation method of degradable polyethylene, is characterized in that operation steps is as follows:
(1) high density polyethylene(HDPE), calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent are added in mixing machine mix, obtain polyethylene mixture; The weight percent of described high density polyethylene(HDPE), calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent and polyethylene mixture is respectively 49.8% ~ 69.8%, 2% ~ 30%, 9% ~ 10%, 1% ~ 10%, 0.2%, the weight percent summation of each raw material and polyethylene mixture is 100%; Described high density polyethylene(HDPE) refers to that density is the polyethylene of 0.946 ~ 0.976g/cm3;
(2) it is mixing in the twin screw extruder of 300 ~ 350 revs/min for the polyethylene mixture obtained in step 1 being added rotating speed, twin screw extruder has six sections, the extrusion temperature of first paragraph and second segment is 170 ~ 190 DEG C, and other each section of extrusion temperature is 190 ~ 220 DEG C;
(3) the material cooling after step 2 being extruded, pelletizing.
2. the material modified preparation method of a kind of degradable polyethylene according to claim 1, is characterized in that the weight percent of high density polyethylene(HDPE), calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent and polyethylene mixture is respectively 49.8%, 30%, 10%, 10% and 0.2%.
3. the material modified preparation method of a kind of degradable polyethylene according to claim 1, is characterized in that the weight percent of polyethylene, calcium carbonate, Rhizoma amorphophalli glucomannan, W-Gum and whipping agent and polyethylene mixture is respectively 69.8%, 20%, 9%, 1% and 0.2%.
4. material modified by the degradable polyethylene prepared of method of claim 1 or 2 or 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310402682.4A CN103450539B (en) | 2013-09-07 | 2013-09-07 | Degradable polyethylene modified material and preparation method thereof |
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| CN201310402682.4A CN103450539B (en) | 2013-09-07 | 2013-09-07 | Degradable polyethylene modified material and preparation method thereof |
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| CN103450539B true CN103450539B (en) | 2015-05-06 |
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| CN112961421A (en) * | 2021-02-19 | 2021-06-15 | 厦门竣众升新材料有限公司 | Polymer plastic |
| CN112961434A (en) * | 2021-02-19 | 2021-06-15 | 厦门竣众升新材料有限公司 | Preparation process of high polymer plastic |
| CN113980379A (en) * | 2021-12-07 | 2022-01-28 | 厦门市昕天工贸有限公司 | Anti-static and buffering packaging material and preparation process thereof |
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| CN102766278B (en) * | 2012-07-24 | 2015-03-18 | 成都宝新容科科技有限公司 | Graft modification method for organic solid powder and inorganic solid powder |
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| CN107434868A (en) * | 2016-05-25 | 2017-12-05 | 鸿明环保科技股份有限公司 | Biodegradable foamed material and its product |
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