CN100429266C - Synthetic paper made of environmental protection plastic and its preparation method - Google Patents

Synthetic paper made of environmental protection plastic and its preparation method Download PDF

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Publication number
CN100429266C
CN100429266C CNB200510010549XA CN200510010549A CN100429266C CN 100429266 C CN100429266 C CN 100429266C CN B200510010549X A CNB200510010549X A CN B200510010549XA CN 200510010549 A CN200510010549 A CN 200510010549A CN 100429266 C CN100429266 C CN 100429266C
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plastic
synthetic paper
environmental protection
modified
mixture
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CNB200510010549XA
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CN1786064A (en
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朱家牧
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朱家牧
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Abstract

The present invention relates to an environmental protection plastic synthetic paper and a preparing method thereof, particularly to a plastic synthetic paper and a preparing method thereof. The present invention solves the problems of difficult compatibility, dispersibility and machinability existed among a plastic base material, packed plant fiber superfine powder and inorganic material superfine powder and difficult recovery of waste plastic. The plastic synthetic paper of the present invention is manufactured by the following components according to weight percentage that 10 to 60% of high molecular polymer resin or the waste plastic, 10 to 50% of modified plant fiber superfine powder, 5 to 30% of modified inorganic material superfine powder and 0 to 15% of processing aid. The environmental protection plastic synthetic paper has the preparing method that the modified plant fiber superfine powder is prepared, the modified inorganic material superfine powder is prepared, modified waste plastic granular material is prepared, and films or sheet material of the plastic synthetic paper can be obtained by mixing material and manufacturing granules. The environmental protection plastic type synthetic paper not only has the functions of plastic but also has the effects of fibrous paper sheets, compared with the fibrous paper sheets, the production process of the present invention is simple, and the present invention can not pollute environment in the process of production.

Description

Synthetic paper made of environmental protection plastic and its preparation method
Technical field
The present invention relates to a kind of plastic synthetic paper and preparation method thereof.
Background technology
But in the at present relevant prior proprietary technologies (seeing Table 1), all be to be body material with thermoplastics polyethylene hydro carbons with the environment-friendly type plastic synthetic paper, mica, CaCO 3, fibre pulp, clay, talcum powder be packing material, form with the processing and manufacturing of twin shaft extension method.
Table 1
Patent publication No. Patent name Application (patent right) people
??CN1164464A The photosynthetic manufacture method of printing quick-drying biaxial stretched polypropylene (Taiwan) Nanya Plastic Cement Industry Co., Ltd
??CN1119988A The synthetic paper with multilayered structure of excellent printing property (Japan) Prince Oil Synthesis Paper Co., Ltd
??CN1169912A Synthetic plastic paper and preparation method thereof (Korea S) Yukong Limited
??CN1101601A The manufacture method of polypropylene pearlescent synthetic paper (Taiwan) Nanya Plastic Cement Industry Co., Ltd
??CN1118742A Composite synthetic paper (Japan) Prince Oil Synthesis Paper Co., Ltd
??CN1131611A Dampler Ace and production method thereof Shanghai Organic Chemistry Institute, Chinese Academy of Sciences
??CN1134872A The manufacture method of synthetic paper and goods thereof (Taiwan) Nan Ya Plastics limited-liability company
??CN1225404A A kind of production method of synthetic paper (Guangdong) South China Science ﹠ Engineering University
??CN1174117A A kind of plastic paper of improvement (Fujian) Chen Feng
??CN1134956A The preparation method of BOPP perlatolic synthesized printing paper capable of quick drying (Taiwan) Nan Ya Plastics limited-liability company
The production of synthetic paper all is to be carrier with the acrylic plastering in the above-mentioned existing patented technology, the vegetable fibre ultrafine powder of plastic matrix material and filling, the problem that has consistency, dispersiveness and workability difficulty between the inorganic materials ultrafine powder, and waste plastics recovery difficulty, mainly there are the following problems: 1, different varieties is often mixed in together, make its minute defection increase cost recovery; 2, plastic waste uses through long-time, is subjected to factor effects such as light, oxygen, heat, content erosion, machinery, biology, degraded in various degree can take place, molecular weight and molecular weight; 3, plastic waste itself has color in various degree, and the pollution of environment in addition is difficult to produce light goods; 4, plastic waste intensity reduces; 5, plastic waste has impurity, and DeR easily takes place work in-process; 6, plastic waste fabricated product surface luster is low or matt.
Summary of the invention
The objective of the invention is to solve the difficulty that has consistency, dispersiveness and workability difficulty, waste plastics recovery difficulty between the vegetable fibre ultrafine powder, inorganic materials ultrafine powder of plastic matrix material and filling.Continuous progress along with science and technology, the continuous enhancing of people's environmental consciousness is in the epoch of economy rapid growth, to reduce the consumption of resource, this complies with the era development needs to keep sustainable economic development, and the present invention develops a kind of synthetic paper made of environmental protection plastic and its preparation method.Synthetic paper made of environmental protection plastic of the present invention is made according to weight percent by following component: modified high-molecular fluoropolymer resin or plastic waste 10~60%, modified plant fibers ultrafine powder 10~50%, modified inorganic material ultrafine powder 5~30%, processing aid 0~15%, wherein the modification plastic waste prepares by the following method: plastic waste is picked up the removal of impurity, wash silt particle, dewatered drying, water ratio is controlled at below 3%, add compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm; The modified high-molecular fluoropolymer resin prepares by the following method: macromolecule copolymer resin is pulverized, add compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm; The modified plant fibers ultrafine powder prepares by the following method: natural plant fibre is earlier through elementary grinding screen removal of impurity drying, moisture content is lower than below 0.5%, carry out again after superfine pulverizing to fineness is 200~1600 orders, place the high-speed mixer that has heating unit, add coupling agent, the mixture and the trimellitate of one or more in the GO-2 type properties-correcting agent, acetyl citrate, n-butyl phthalate, didecyl phthalate, dimixo-octyl phthalate, n-octyl-n-decyl phthalate, phthalic ester, nonane diacid, the mixture of one or more in the N-ethyl para toluene sulfonamide, controlled temperature blend 15~30 minutes under 80~120 ℃ condition, take out then, it is standby to be cooled to normal temperature; The modified inorganic material ultrafine powder prepares by the following method: inorganic powder is carried out superfine pulverizing to fineness 〉=2000 orders or reach nano level, moisture content is controlled at≤and 0.5%, add silane or titanate coupling agent 0.3~1.0wt.%, compatilizer 0.5~2wt.%, the blend 10~30 minutes of packing in the high speed mixer that has heating unit under 80~120 ℃ condition takes out that to be cooled to normal temperature standby.
The preparation method of synthetic paper made of environmental protection plastic of the present invention carries out according to following steps: one, the preparation of modified plant fibers ultrafine powder: natural plant fibre is earlier through elementary grinding screen removal of impurity drying, moisture content is lower than below 0.5%, carry out again after superfine pulverizing to fineness is 200~1600 orders, place the high-speed mixer that has heating unit, add coupling agent, the mixture and the trimellitate of one or more in the GO-2 type properties-correcting agent, acetyl citrate, n-butyl phthalate, didecyl phthalate, dimixo-octyl phthalate, n-octyl-n-decyl phthalate, phthalic ester, nonane diacid, the mixture of one or more in the N-ethyl para toluene sulfonamide, controlled temperature blend 15~30 minutes under 80~120 ℃ condition, take out then, it is standby to be cooled to normal temperature; Two, the preparation of modified inorganic material ultrafine powder: inorganic powder is carried out superfine pulverizing to fineness 〉=2000 orders or reach nano level, moisture content is controlled at≤and 0.5%, add silane or titanate coupling agent 0.3~1.0wt.%, compatilizer 0.5~2wt.%, the blend 10~30 minutes of packing in the high speed mixer that has heating unit under 80~120 ℃ condition takes out that to be cooled to normal temperature standby; Three, the preparation of modified high-molecular fluoropolymer resin or plastic waste pellet: with the plastic waste dewatered drying, water ratio is controlled at below 3%, add compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm; The modified high-molecular fluoropolymer resin prepares by the following method: macromolecule copolymer resin is pulverized, add compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm; Four; batch mixing; granulation: according to weight percent is modified high-molecular fluoropolymer resin or plastic waste 10~60%; modified plant fibers ultrafine powder 10~50%; modified inorganic material ultrafine powder 5~30%; the ratio of processing aid 0~15% with above-mentioned raw materials put into have temperature controlled high-speed mixer in temperature be stir under 80~120 ℃ the condition carried out thorough mixing in 10~30 minutes after; join again in single screw rod or the dual-screw pelletizer; the plasticizing extruding pelletization; then pellet is carried out extrusion-blown modling or plasticizing and extrude curtain coating and handle, obtain the film or the sheet material of synthetic paper made of environmental protection plastic.
Synthetic paper made of environmental protection plastic of the present invention has had new breakthrough technically, new innovation point.Synthetic paper made of environmental protection plastic, its material combination are macromolecule copolymer resin (plastics), natural plant fibre, inorganic materials, properties-correcting agent, compatilizer and processing aid.Its preparation key is the preparation of vegetable fibre ultrafine powder, inorganic materials preparation and the preparation of waste or used plastics pellet, and the pellet preparation is extruded in the synthetic paper made of environmental protection plastic plasticizing.Must solve the vegetable fibre ultrafine powder of plastic matrix material and filling, the problem of the consistency of inorganic materials ultrafine powder, dispersiveness and workability.
The fundamental principle of synthetic paper made of environmental protection plastic technology controlling and process of the present invention:
1, natural plant fibre must select not have rotten, do not have rotten, pollution-free serious crop stalk, reed bar, shell and a sugared slag, than comparatively fresh.
2, natural plant fibre, plastic waste must be picked up the removal of impurity, screen, wash silt.
3, natural plant fibre, inorganic materials superfine pulverizing, by the requirement of Technology, fineness will guarantee.
4, pellet is produced in modified plant fibers ultrafine powder, modified inorganic material ultrafine powder, the blend of waste plastics recycling pellet, all should do oven dry before using handles, water content all should be controlled at below 0.5%, prevent and avoid when plasticizing is extruded, producing the aquation degraded that goods bubble occurs and influence the end article quality because of water ratio is too high.
5, accurately metering should accurately be measured all kinds of material properties-correcting agent, produce the addition of auxiliary agent, but otherwise be difficult to finish feature of environmental protection plastic synthetic paper the finished product of the present invention in strict accordance with technical indicator.
6, waste plastics recycling plasticizing extruding pelletization, but this three technological processs are extruded in feature of environmental protection plastic synthetic paper feedstock production blend batching, extruding pelletization, plasticizing, and temperature control is most important, and too high meeting causes material degraded, the burnt paste, it is bad to cross low plasticizing, even can damage equipment.The technical data of recommending, temperature should be controlled between 160~210 ℃, preferred about 180 ℃.
Selecting for use of synthetic paper made of environmental protection plastic body material of the present invention according to synthetic paper made of environmental protection plastic various characteristics index, the field difference of using can be divided three classes: a class is the non-degradable plastic, as: polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), nylon (PA); Two classes are degradable plastics, as: poly(lactic acid) (PLA), carbon dioxide polymer (PPC), polyvinyl alcohol (PVA); Three classes are plastic waste, comprise polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), nylon (PA) etc.Auxiliary agent has following a few class: 1. be used for vegetable fibre surface-treated properties-correcting agent and be one or more mixture of GO-2 type properties-correcting agent, silane coupling agent, heat-resisting diheptyl phthalate (DHP), lubricant is calcium stearate (CaSt) and/or barium stearate (BaSt); 2. plastic waste compatilizer (EEP): the ternary graft copolymer of ethylene vinyl acetate, ethylene, propylene butadienecopolymer and POE; 3. processing aid: thermo-stabilizer is ferric acetyl acetonade (FeACAC) and/or methyl methacrylate copolymer compound (ACR) etc.; Softening agent is polyvalent alcohol (DBP) and/or dibutyl phthalate (DBP) (DCP) etc., and linking agent is one or more the mixture in MALEIC ANHYDRIDE (MAH), borax, formaldehyde, the benzoyl peroxide (BPO).
Plastic synthetic paper of the present invention is produced ratio with fibrous paper, technology is simple, the production process non-pollutant discharge, can save a large amount of petroleum resources and the consumption of material, appliable plant fiber (crop stalk, reed bar, shell and sugared slag), also can improve its added value, increase peasant's income, create more jobs.The technology of the core of this invention: the solution of one success after the vegetable fibre refinement at the agglomeration of plasticizing in the thermoforming; Vegetable fibre behind its two super-refinement, inorganics be through after the surface modification treatment, with the consistency in the plasticizing thermoforming processing and the problem of dispersed and additivity; The applying nano technologic material of the preparation success of its three synthetic paper made of environmental protection plastic, material modification technology, material degradation technology; Its four the present invention is the recyclable utilization again of the product of depleted resource regeneration and the present invention's preparation.
Synthetic paper made of environmental protection plastic of the present invention is to be base material with the polyolefin plastics, and the filling plant fiber is with the manufacturing of plasticizing extruding process thereof.This plastic synthetic paper not only has the function of plastics, has the characteristic of paper again, is a kind of environmentally friendly machine, can substituted for plastic, paper application is in packaging field and other purposes.But environmentally-friendly plastic plastic synthetic paper had both had the function of plastics, and the effect of fibre paper is arranged again, and production technique is simple than the fibre paper production technique, and free from environmental pollution in the production process.
Description of drawings
Fig. 1 is preparation technology's schema of synthetic paper made of environmental protection plastic, and Fig. 2 is a plant fibre powder modification process schema, and Fig. 3 is a plastic waste granule preparing process schema.
Embodiment
Embodiment one: the synthetic paper made of environmental protection plastic of present embodiment is made according to weight percent by following component: modified high-molecular fluoropolymer resin or plastic waste 10~60%, modified plant fibers ultrafine powder 10~50%, modified inorganic material ultrafine powder 5~30%, processing aid 0~15%.
Macromolecule copolymer resin described in the present embodiment can be one or more the mixture in polyethylene, polypropylene, polyethylene terephthalate, the nylon, also can be one or more mixture of poly(lactic acid), carbon dioxide polymer, polyvinyl alcohol.Plastic waste is one or more the mixture in polyethylene, polypropylene, polyethylene terephthalate, the nylon.Described processing aid is one or more the mixture in softening agent, compatilizer, the linking agent, and wherein softening agent is polyvalent alcohol and/or dibutyl phthalate; Compatilizer is one or more the mixture in vinylformic acid, methacrylic acid, MALEIC ANHYDRIDE, maleic anhydride, methacrylic acid, the acrylic acid-grafted thing; Linking agent is one or more the mixture in MALEIC ANHYDRIDE, borax, formaldehyde, peroxidation diisopropyl, the benzoyl peroxide.Described vegetable fibre is one or more the mixture in crop stalk, reed bar, shell, the sugared slag.Described inorganic materials is polynite, CaCO 3, TiO 2, SiO 2In one or more mixture.
Embodiment two: the synthetic paper made of environmental protection plastic of present embodiment is made according to weight percent by following component: modified high-molecular fluoropolymer resin or plastic waste 15%, modified plant fibers ultrafine powder 50%, modified inorganic material ultrafine powder 30%, processing aid 5%.
Embodiment three: the synthetic paper made of environmental protection plastic of present embodiment is made according to weight percent by following component: modified high-molecular fluoropolymer resin or plastic waste 60%, modified plant fibers ultrafine powder 20%, modified inorganic material ultrafine powder 10%, processing aid 10%.
Embodiment four: the synthetic paper made of environmental protection plastic of present embodiment is made according to weight percent by following component: modified high-molecular fluoropolymer resin or plastic waste 40%, modified plant fibers ultrafine powder 38%, modified inorganic material ultrafine powder 20%, processing aid 2%.
Embodiment five: present embodiment prepares synthetic paper made of environmental protection plastic according to following steps:
One, the preparation of modified plant fibers ultrafine powder: natural plant fibre is earlier through elementary grinding screen removal of impurity drying, moisture content is lower than below 0.5%, carry out again after superfine pulverizing to fineness is 200~1600 orders, place the high-speed mixer that has heating unit, add properties-correcting agent and softening agent, controlled temperature blend 15~30 minutes under 80~120 ℃ condition is taken out then, and it is standby to be cooled to normal temperature.Described natural plant fibre is one or more the mixture in stalk, straw, reed bar, rice husk, wood chip, the pomace; Properties-correcting agent is one or more the mixture in coupling agent, maleic anhydride, the GO-2 type properties-correcting agent, wherein GO-2 type properties-correcting agent for as the eastern gold properties-correcting agent that comes amino acid company limited to produce; Coupling agent is silane coupling agent and/or titanate coupling agent; Softening agent is one or more the mixture in trimellitate, acetyl citrate, n-butyl phthalate, didecyl phthalate, dimixo-octyl phthalate, n-octyl-n-decyl phthalate, phthalic ester, nonane diacid, the N-ethyl para toluene sulfonamide.
Two, the preparation of modified inorganic material ultrafine powder: the inorganic powder of selecting for use is carried out superfine pulverizing to fineness 〉=2000 orders or reach nano level, moisture content is controlled at≤and 0.5%, add silane or titanate coupling agent 0.3~1.0wt.%, compatilizer 0.5~2wt.%, the blend 10~30 minutes of packing in the high speed mixer that has heating unit under 80~120 ℃ condition takes out that to be cooled to normal temperature standby.Described inorganic powder is CaCO 3, SiO 2, TiO 2, one or more the mixture in the polynite, kaolin, wilkinite; Compatilizer is one or more the mixture in vinylformic acid, methacrylic acid, MALEIC ANHYDRIDE, maleic anhydride, methacrylic acid, the acrylic acid-grafted thing.
Three, the preparation of modification plastic waste: the plastic waste of retrieving is picked up the removal of impurity, wash silt particle, dewatered drying, water ratio is controlled at below 3%, adds compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm, the scrap stock of macromolecule copolymer resin processing are directly pulverized, with the same blend plasticizing of plastic waste extruding pelletization.Described macromolecule copolymer resin can be one or more the mixture in polyethylene, polypropylene, polyethylene terephthalate, the nylon, also can be one or more mixture of poly(lactic acid), carbon dioxide polymer, polyvinyl alcohol.Plastic waste is one or more the mixture in polyethylene, polypropylene, polyethylene terephthalate, the nylon.Softening agent is one or more the mixture in methylmethacrylate copolymer, polyvalent alcohol, the dibutyl phthalate (DBP).Lubricant is calcium stearate and/or barium stearate.Coupling agent is silane and/or titanate coupling agent.Compatilizer is the ternary graft copolymer of ethylene vinyl acetate, ethylene, propylene butadienecopolymer and POE.
Four; batch mixing; granulation: according to weight percent is macromolecule copolymer resin or plastic waste 10~60%; modified plant fibers ultrafine powder 10~50%; modified inorganic material ultrafine powder 5~30%; the ratio of processing aid 0~15% with above-mentioned raw materials put into have temperature controlled high-speed mixer in temperature be stir under 80~120 ℃ the condition carried out thorough mixing in 10~30 minutes after; join again in single screw rod or the dual-screw pelletizer; the plasticizing extruding pelletization; then pellet is carried out extrusion-blown modling or plasticizing and extrude curtain coating and handle, obtain the film or the sheet material of synthetic paper made of environmental protection plastic.Described processing aid is one or more the mixture in softening agent, compatilizer, the linking agent, and wherein softening agent is polyvalent alcohol and/or dibutyl phthalate (DBP); Compatilizer is one or more the mixture in vinylformic acid, methacrylic acid, MALEIC ANHYDRIDE, maleic anhydride, methacrylic acid, the acrylic acid-grafted thing; Linking agent is one or more the mixture in MALEIC ANHYDRIDE, borax, formaldehyde, peroxidation diisopropyl, the benzoyl peroxide.The particle diameter of pellet is 0.3~2mm in the present embodiment, and grain length is 1~4mm; In the film or sheet material of plastic synthetic paper, film material thickness is 0.04~0.5mm, and sheet thickness is 0.6~3mm.
Embodiment six: present embodiment is described in further details in conjunction with Fig. 1~3.Synthetic paper made of environmental protection plastic of the present invention has had new breakthrough technically, new innovation point.Synthetic paper made of environmental protection plastic, its material combination are macromolecule copolymer resin (plastics), natural plant fibre, inorganic materials, properties-correcting agent, compatilizer and processing aid.Its preparation key is the preparation of vegetable fibre ultrafine powder, inorganic materials preparation and the preparation of waste or used plastics pellet, and the pellet preparation is extruded in the synthetic paper made of environmental protection plastic plasticizing.Must solve the vegetable fibre ultrafine powder of plastic matrix material and filling, the problem of the consistency of inorganic materials ultrafine powder, dispersiveness and workability is embodied in:
One, vegetable fibre belongs to oxy-compound, and polarity is big, belongs to hydrophilic material, and is very difficult compatible with plastics, not directly adds, must be through the modification pre-treatment.Pre-treatment is pressed routine step and is carried out (as Fig. 2).Vegetable fibre (one or more in crop stalk, reed bar, shell, the sugared slag) is at first carried out elementary pulverizing, stock is cut into 2~3cm segment, shell is ground into particle diameter≤2.5cm fritter, screen out silt particle and dust then, dry, make through elementary comminuted plants fiber moisture to be lower than below 0.5%.The vegetable fibre particle that oven dry is good carries out superfine pulverizing, when fineness reaches 200~1600 orders, can carry out surface modification treatment to the vegetable fibre superfine pulverizing.The vegetable fibre surface modification treatment, the one, add the 5wt.% maleic anhydride grafts, make its hydroxyl generation esterification, reduce its polarity, prevent that the work in-process gathering is agglomerating, add 0.5~3wt.%N-ethyl tolysulfonyl amine plasticizer and improve its dispersiveness in plastics; The 2nd, add the GO-2 compatilizer (coming amino acid company limited to produce) of 2~5wt.% as eastern gold, improve itself and the good consistency of plastics; The 3rd, the vegetable fibre ultrafine powder of blending grafts, softening agent, compatilizer is added in the high-speed mixer that has temperature control unit; temperature is controlled at 80~120 ℃, stirs about 10~30 minutes, carries out thorough mixing and shuts down; be cooled under the normal temperature, it is stand-by to carry out weather-proof dressing.
It is just easy many for the following step process operation enforcement of the preparation of synthetic paper made of environmental protection plastic to have solved above-mentioned key and main points, and the quality of product has had assurance.
Two, indication plastic waste of the present invention is a thermoplastics, i.e. leftover bits in the moulding course of processing and goods are finished the waste of a family macromolecule polymkeric substance that produces after work-ing life.Plastic waste divides processing waste material again and uses waste material, is the main source that plastics recovery utilizes again and use useless moulding.Waste plastics recovery at first must the technical solution difficulty have: 1, different varieties is often mixed in together, make its minute defection increase cost recovery; 2, plastic waste uses through long-time, is subjected to factor effects such as light, oxygen, heat, content erosion, machinery, biology, degraded in various degree can take place, molecular weight and molecular weight; 3, plastic waste itself has color in various degree, and the pollution of environment in addition is difficult to produce light goods; 4, plastic waste intensity reduces; 5, plastic waste has impurity, and DeR easily takes place work in-process; 6, plastic waste fabricated product surface luster is low or matt.But plastic waste also has its superiority, the one, and the molding waste tooling cost is low; The 2nd, the processing fluidity of plastic waste is good, easily plasticizing; The 3rd, can have complementary advantages between the different varieties in the plastic waste, each other modification mutually.
Based on the technological difficulties of above-mentioned waste plastics recycling, the present invention all captures item by item, is successfully applied in the preparation of synthetic paper made of environmental protection plastic.Concrete preparation method (Fig. 3): the plastic waste of retrieving is selected, and the plastic waste of picking up the removal of impurity and should not using cleans then, wash the silt particle, the dirt that stick on the plastic waste off, after having cleaned, dewater, finish this operation after, mix a certain amount of plastic working scrap stock, shred simultaneously, the film material is cut into the sheet of 10 * 15cm, after sheet material is cut into 2.5 * 2.5cm bulk, do oven dry and handle, the plastic waste water ratio of chopping is lower than below 1%.Add a kind of lubricant in 5wt.%EEP compatilizer, 1~10wt.% silane or 0.5~1wt.% titanate coupling agent, 3~5wt.%N-phenyl maleimide (PMI) or the heat-resisting softening agent of N-cyclohexyl acid imide, 0.2~2% Magnesium Stearate, the lead stearate this moment, this lubricant has the effect of thermo-stabilizer concurrently, carry out abundant blending with shredding the plastic waste of oven dry and the auxiliary agent of interpolation, plastify at last and extrude, be cut into particle diameter 1.5~2.5mm, the particle of grain length 2~3mm packs standby.
Three, the preparation of inorganic materials.Fill inorganic materials, its function is for intensity that improves synthetic paper made of environmental protection plastic and the purpose that reduces cost, but the superfine pulverizing inorganic materials cannot be directly and plastic blend, consistency, bad dispersibility because of itself and plastics, surface modification treatment must be carried out in use, the result of use of expection can be reached.With the inorganic powder (CaCO that selects for use 3, TiO 2, SiO 2, in the polynite one or more) carry out superfine pulverizing 〉=2000 orders or reach nano level, water ratio is lower than≤and 0.5%, add titanic acid ester or aluminate coupling agent 0.3~1.0wt.%, compatilizer is one or more the mixture in maleic anhydride (MAH), vinylformic acid (MAA), methacrylic acid (MMA), the MALEIC ANHYDRIDE (MA), consumption 2~5wt.%.Inorganic materials ultrafine powder, compatilizer, the coupling agent selected for use are together put into the high-speed mixer that has heating unit carry out blend, temperature is controlled at 80~120 ℃, stirs to take out after 10~30 minutes to be cooled to normal temperature, and weather-proof dressing is standby.
Four, the prepared process of synthetic paper made of environmental protection plastic is as (Fig. 1).The feedstock production of synthetic paper made of environmental protection plastic, the particle of plastic matrix material and vegetable fibre, organic materials, the processing aid of modification are carried out the blend granulation, can put into plasticizing expressing technique operation, finish technical process of the present invention, produce the product of the performance index that meet expection.
According to pre-determining the variant production kind, determine different proportion schemes, carry out batch operation according to definite proportion scheme.Program is: by weight percentage; by selected modified plastics body material polyolefins plastics; the degradable plastic; in the reclaiming waste material a kind of 10~60%; the vegetable fibre ultrafine powder 10~50% of modification; the inorganic materials 1~30% of modification; the ratio of processing aid 0~10%; pack into simultaneously and have in the high-speed mixer of heating unit; temperature is controlled at 80-120 ℃; stirred 10-30 minute; send in single dual-screw pelletizer after fully mixing; the plasticizing extruding pelletization; when plasticizing is extruded; temperature is controlled at 160-210 ℃; preferred 180 ℃, particle diameter 1.5~2.5mm, grain length 2~3mm.Be cooled to normal temperature, weather-proof dressing is stand-by.
Five, the preparation of synthetic paper made of environmental protection plastic can be put into the product plasticizing and extrude in the production process in the technological process of finishing the blend granulation.At the technology method that this technological process adopts, promptly can be that the curtain coating technology method is extruded in extrusion-blown modling or plasticizing.Take which kind of plasticizing expressing technique technological method can be by scale of investment, particular cases such as output be finally finished the film or the sheet material of synthetic paper made of environmental protection plastic of the present invention.
Embodiment seven: present embodiment is achieved in that according to weight percent 45% modified polyolefin plastics, 40% modified plant fibers ultrafine powder, 5% modification TiO 2, 5% modification CaCO 3, 3% calcium stearate, 2% polyalcohols softening agent, Plasticizing is extruded on the 45mm inflation film manufacturing machine, control line speed 5~25m/min, and 180~190 ℃ of barrel zone temperatures, 170~180 ℃ of die head temperatures, film forming thickness 0.07mm, product physical performance index see Table 2 (polyolefin synthetic papers).
Embodiment eight: present embodiment is achieved in that according to weight percent useless reworked material, 40% modified surface processing vegetable fibre ultrafine powder, the modified inorganic material powder TiO of moulding of 45% modification 2, SiO 2Each 4%, 3% heat-resisting softening agent N-phenyl maleimide (PMI), 1.5% lead stearate exterior lubricant, 2.5% polyol plasticiser, Plasticizing is extruded on the 45mm inflation film manufacturing machine, control line speed 5~25m/min, and 180~190 ℃ of barrel zone temperatures, 175~185 ℃ of die head temperatures, film forming thickness 0.07mm, product physical performance index see Table 2 (plastic waste synthetic papers).
Embodiment nine: present embodiment is achieved in that according to weight percent handles vegetable fibre ultrafine powder, 5% modified surface processing titanium dioxide (TiO with 44% poly (propylene carbonate), 40% modified surface 2) ultrafine powder, 3% softening agent N-phenyl toxilic acid acid amides (PMI), 2.5% polyol plasticiser, 1.5% coupling agent γ-two TSL 8330 (ATMS), 4% hot softening agent barium stearate (BaSt), blend plasticizing extruding pelletization. Plasticizing is extruded on the 45mm inflation film manufacturing machine, control line speed 5~25m/min, and 170~180 ℃ of barrel zone temperatures, 160~170 ℃ of die head temperatures, film forming thickness 0.09mm, product physical performance index see Table 2 (PPC synthetic papers).
Table 2 physical performance index
In sum, the physical performance index of the synthetic paper made of environmental protection plastic in the specific embodiment of the invention seven~nine is with the PP plastic synthetic paper, the contrast of polyethylene kraft paper, can reach the physical index that uses packing fully, prove that the present invention is feasible, alternative fiber paper, plastic packaging film.Three embodiments of the present invention only are Three Represents examples of the present invention, are not empty example, but can extend the product of more environmental protection, and the remodeling that the engineering technical personnel in present technique field carry out according to this principle is joined material preparing product lead-pipe cinch.This seriously explanation be Technology prescription of the present invention, processing technology routine is done any improvement and all should be belonged to the present technique category.

Claims (10)

1, synthetic paper made of environmental protection plastic, it is characterized in that it is made according to weight percent by following component: modified high-molecular fluoropolymer resin or plastic waste 10~60%, modified plant fibers ultrafine powder 10~50%, modified inorganic material ultrafine powder 5~30%, processing aid 0~15%, wherein the modification plastic waste prepares by the following method: plastic waste is picked up the removal of impurity, wash silt particle, dewatered drying, water ratio is controlled at below 3%, add compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm; The modified high-molecular fluoropolymer resin prepares by the following method: macromolecule copolymer resin is pulverized, add compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm; The modified plant fibers ultrafine powder prepares by the following method: natural plant fibre is earlier through elementary grinding screen removal of impurity drying, moisture content is lower than below 0.5%, carry out again after superfine pulverizing to fineness is 200~1600 orders, place the high-speed mixer that has heating unit, add coupling agent, the mixture and the trimellitate of one or more in the GO-2 type properties-correcting agent, acetyl citrate, n-butyl phthalate, didecyl phthalate, dimixo-octyl phthalate, n-octyl-n-decyl phthalate, phthalic ester, nonane diacid, the mixture of one or more in the N-ethyl para toluene sulfonamide, controlled temperature blend 15~30 minutes under 80~120 ℃ condition, take out then, it is standby to be cooled to normal temperature; The modified inorganic material ultrafine powder prepares by the following method: inorganic powder is carried out superfine pulverizing to fineness 〉=2000 orders or reach nano level, moisture content is controlled at≤and 0.5%, add silane or titanate coupling agent 0.3~1.0wt.%, compatilizer 0.5~2wt.%, the blend 10~30 minutes of packing in the high speed mixer that has heating unit under 80~120 ℃ condition takes out that to be cooled to normal temperature standby.
2, synthetic paper made of environmental protection plastic according to claim 1 is characterized in that described macromolecule copolymer resin is one or more the mixture in polyethylene, polypropylene, polyethylene terephthalate, the nylon.
3, synthetic paper made of environmental protection plastic according to claim 1 is characterized in that described macromolecule copolymer resin is one or more a mixture of poly(lactic acid), carbon dioxide polymer, polyvinyl alcohol.
4, synthetic paper made of environmental protection plastic according to claim 1 is characterized in that described plastic waste is one or more the mixture in polyethylene, polypropylene, polyethylene terephthalate, the nylon.
5, synthetic paper made of environmental protection plastic according to claim 1 is characterized in that described processing aid is one or more the mixture in softening agent, compatilizer, the linking agent.
6, synthetic paper made of environmental protection plastic according to claim 5 is characterized in that described softening agent is polyvalent alcohol and/or dibutyl phthalate; Compatilizer is one or more the mixture in maleic anhydride, methacrylic acid, the acrylic acid-grafted thing; Linking agent is one or more the mixture in MALEIC ANHYDRIDE, borax, formaldehyde, the benzoyl peroxide.
7, synthetic paper made of environmental protection plastic according to claim 1 is characterized in that described vegetable fibre is one or more the mixture in crop stalk, reed bar, shell, the sugared slag.
8, synthetic paper made of environmental protection plastic according to claim 1 is characterized in that described inorganic materials is polynite, CaCO 3, TiO 2, SiO 2In one or more mixture.
9, the preparation method of the described synthetic paper made of environmental protection plastic of claim 1, it is characterized in that it is prepared according to following steps: one, the preparation of modified plant fibers ultrafine powder: natural plant fibre is earlier through elementary grinding screen removal of impurity drying, moisture content is lower than below 0.5%, carry out again after superfine pulverizing to fineness is 200~1600 orders, place the high-speed mixer that has heating unit, add coupling agent, the mixture and the trimellitate of one or more in the GO-2 type properties-correcting agent, acetyl citrate, n-butyl phthalate, didecyl phthalate, dimixo-octyl phthalate, n-octyl-n-decyl phthalate, phthalic ester, nonane diacid, the mixture of one or more in the N-ethyl para toluene sulfonamide, controlled temperature blend 15~30 minutes under 80~120 ℃ condition, take out then, it is standby to be cooled to normal temperature; Two, the preparation of modified inorganic material ultrafine powder: inorganic powder is carried out superfine pulverizing to fineness 〉=2000 orders or reach nano level, moisture content is controlled at≤and 0.5%, add silane or titanate coupling agent 0.3~1.0wt.%, compatilizer 0.5~2wt.%, the blend 10~30 minutes of packing in the high speed mixer that has heating unit under 80~120 ℃ condition takes out that to be cooled to normal temperature standby; Three, the preparation of modified high-molecular fluoropolymer resin or plastic waste pellet: with the plastic waste dewatered drying, water ratio is controlled at below 3%, add compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm; The modified high-molecular fluoropolymer resin prepares by the following method: macromolecule copolymer resin is pulverized, add compatilizer 3~5wt.%, coupling agent 1~10wt.%, softening agent 3~5wt.%, lubricant 0.2~2wt.%, blend plasticizing extruding pelletization, particle diameter 1.5~2.5mm, grain length 2~3mm; Four; batch mixing; granulation: according to weight percent is modified high-molecular fluoropolymer resin or plastic waste 10~60%; modified plant fibers ultrafine powder 10~50%; modified inorganic material ultrafine powder 5~30%; the ratio of processing aid 0~15% with above-mentioned raw materials put into have temperature controlled high-speed mixer in temperature be stir under 80~120 ℃ the condition carried out thorough mixing in 10~30 minutes after; join again in single screw rod or the dual-screw pelletizer; the plasticizing extruding pelletization; then pellet is carried out extrusion-blown modling or plasticizing and extrude curtain coating and handle, obtain the film or the sheet material of synthetic paper made of environmental protection plastic.
10, the preparation method of synthetic paper made of environmental protection plastic according to claim 9, the particle diameter that it is characterized in that described pellet is 0.3~2mm, grain length is 1~4mm; In the film or sheet material of plastic synthetic paper, film material thickness is 0.04~0.5mm, and sheet thickness is 0.6~3mm.
CNB200510010549XA 2005-11-16 2005-11-16 Synthetic paper made of environmental protection plastic and its preparation method CN100429266C (en)

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