CN1330024A - Isolation-type paint can and its manufacture method and equipment - Google Patents
Isolation-type paint can and its manufacture method and equipment Download PDFInfo
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- CN1330024A CN1330024A CN 01127023 CN01127023A CN1330024A CN 1330024 A CN1330024 A CN 1330024A CN 01127023 CN01127023 CN 01127023 CN 01127023 A CN01127023 A CN 01127023A CN 1330024 A CN1330024 A CN 1330024A
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- type paint
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Abstract
An isolation-type drum for paint is prepared from PA (5-35%), HDPE (55-93%), compatilizer (2-10%), antistatic agent (0.01-8%) and galss fibre (1-20%) through fusion, mixing and injection moulding. Said compatilizer is prepared from basic resin HDPE, LDPE, LLDPE, EVA, mixture of two or more of them, and graft monomer: maleic acid, fumaric acid, acrylic acid, their derivatives, or their mixture. The nozzle cross section of injection moulder and mainflow path cross section of mould are all in the form of key groove. The flow gate of mould is central flow gate.
Description
(1), technical field
The present invention relates to a kind of isolation-type hollow container and manufacture method thereof; Especially injection mo(u)lding forms high density polyethylene (HDPE) paint can and the manufacture method and the equipment of stratiform barrier structure.
(2), background technology
The general metal bucket that uses of packing, its inside is zinc-plated, cadmium plating or epoxy baking finish.But junction easy to leak or corrosion, and pack of low gradely, overall styling is outmoded.In addition, the metal drum power consumption is high, the metals resources shortage.Therefore, urgently wish Development of New Generation high-barrier type hollow container, be commonly called as paint can.The mixed economy effect of plastic paint bucket is than metal drum cheapness, and light weight, attractive in fashion, easy-formation, and sealing property (referring to the bung seam) is good, can improve work efficiency again, saves artificial, energy savings, decontamination etc.If can strengthen its barrier property, be bound to enjoy the favor in coating market.
Its forming method of high density polyethylene (HDPE) (HDPE) mainly is blowing and injection moulding.The America and Europe has 40% HDPE to be used for this field.The external main method that improves HDPE hollow container barrier has: surface fluorination or sulfonation, stratiform blend, compound extruding.Its laminate blend is simple because of processing technology, economize in raw materials, and energy-conservation, waste and old container easily reclaims, and barrier property is good even approach the goods barrier property of coextrusion structure, and development in recent years is rapid.
About stratiform blend barrier container, the Sezume of Japan, Tadashi etc. have done many fruitful researchs.They have told about anti-solvent plastic container at the Jpn.Kokai Tokkyo Koho JP0632 that on February 8th, 1994 delivered in 977 patents.This anti-impact and be used for the container of solvent and the container in tool box, by the PA that contains 50-90%, 100 parts of blend compositions and 3-80 part inorganic filler molding of the polyolefin elastic plastics of the improved polyalkene of 2-40% or the contain 〉=polyolefin of 1% improved polyalkene and modified polyolefin elastomer plastics of 2-40% or contain 〉=1% modified polyolefin elastomer plastics form.Like this, to make bending modulus be 35000Kg/cm in the compound injection moulding that will contain 6,30 parts of maleic acid PP of 60 parts of nylon, 10 parts of maleic acid EP rubbers and 15 parts of glasses
2(doing) and 26000Kg/cm
2When (wetting), 23 ℃ of Izod strength under shocks is 20Kg.cm/cm, is 12Kg.cm/cm in the time of-30 ℃., and the sample of good oil resistance is arranged.
Jpn.Kokai Tokkyo Koho JP0616 in that on January 25th, 1994 delivered has told about PA choke food container in 930 patents.This shock resistance PA of container that block water by (A) 50-90%, (B) compound of the improved polyalkene of 2-40% or contain＞1% improved polyalkene, (C) the modified olefin elastoplast of 2-40%, or contain 〉=the alkene elastoplast compound of 1% improved elastic plastics and (D) 3-80 part inorganic filler make.Like this, a kind of 60 parts of A28 (nylon 6) that contain, 30 parts of C915XC (maleic acid PP), the composition of 10 parts of HA75 (maleic acid EP rubbers) and 15 parts of CS03MAFT2A (glass fibre) is by kneading, granulation and injection moulding, to obtain test pieces.Measure Izod strength under shock when+23 ℃ and-30 ℃ and be respectively 20 and 13kg.cm/cm, the infiltration ability in the time of 80 ℃ is 3.5g/m
2One day, oozing the oxygen ability in the time of 30 ℃ was 300cm
3/ cm
2One day, under an atmospheric pressure, and good water preventing ability is arranged.
Votanic, the Jpn.Kokai Tokkyo Koho JP04 that Takeshi delivered on July 9th, 1992 has told about polyolefin-based gasoline antiseepage fuel tank in 191,029 patents.This oil drum has a continuous polyolefin (as polyethylene) matrix phase, a discontinuous polyethylene amide layer more than two layers.These layers are present in core along substrate concentration, and some is perpendicular to concentration direction.Plane particle (as mica) also disperses along the direction of stromal surface.When flat particle during by incorrect processing, they just are used to finish the function of laminar texture.
Breck, Alan Keith will contain polyethylene and nylon in the European patent EP 0280455A2 that delivered on August 31st, 1988 compound is heated to the temperature more than the fusing point of all components, and reduces stirring rate as far as possible.Even molten mixture is expelled in the mould, obtains having the container that hinders barriers such as oxygen.
China is approximately since the research of nineteen ninety this respect.At present, the domestic research report of not seeing the high barrier paint can as yet.According to the technical merit and the economic situation of China, the stratiform blend has good development prospect,
The method of moulding paint can has injection moulding and extrusion-blown modling method.Because the extrusion equipment investment is higher, the quality control project is many, and feed stock cost is also high.And injection moulding does not nearly all produce the leftover bits that need melt down processing in whole process.The work capacity of processing behind the goods seldom.
(3), summary of the invention
The objective of the invention is: the excellent characteristics of the ratio of performance to price that make full use of high density polyethylene (HDPE) (HDPE), be used for making hollow container, especially make and have anlistatig paint can, it is good to the purpose of this invention is to provide a kind of processing characteristics, cheap, not only water-fast, moisture-proof characteristic is given prominence to, and have equilibrium and the isolation-type hollow container and the manufacture method thereof of excellent physical and mechanical properties, make it have barrier simultaneously materials such as nitrogen, many organic solvents, grease class and spices.
The object of the present invention is achieved like this: isolation-type paint can, the PA of prescription following (A) 5-35% of formation isolation-type paint can, (B) HDPE of 55-93%, (C) compatilizer of 2-10%;
Further improvement of the present invention is: contain the antistatic additive of (D) 0.01-8% in the isolation-type paint can prescription, also can contain the 1-20% glass fibre in addition.
Compatilizer adopts special process to produce for adapting to injection mo(u)lding formation stratiform barrier structure;
Isolation-type paint can has antistatic property, and this is based on the security consideration of doing paint, oil drum use;
The manufacture method of isolation-type paint can and equipment: high density polyethylene (HDPE) (HDPE), nylon, compatilizer were mixed in high-speed mixer 1-10 minute.Said mixture injection mo(u)lding in the injection molding machine.Each section of injection machine temperature is 230-250 ℃.In the injection-moulding device, use the screw portion of injection moulding machine not conform to non-return ring, screw head is a sharp cone distal; Use the burner bore cross-sectional plane of injection moulding machine to be key-way shape; Use the sprue cross-sectional plane of mould to be key-way shape; Use the gate form of mould to be central gate.
Characteristics of the present invention are: mix by polyethylene with its inconsistent nylon, compatilizer, antistatic additive etc., with above-mentioned constituent through injection moulding, be processed into isolation-type paint can, wherein nylon is with thin, two dimension basically, and parallel bonding layer form is present in barrel wall.During PA addition 15%, increase cost about 15%.
The present invention has made full use of the characteristics of high density polyethylene (HDPE) (HDPE) and nylon material, be used for making hollow container, especially make and have anlistatig paint can, processing characteristics is good, cheap, not only water-fast, moisture-proof characteristic is given prominence to, and can make the isolation-type hollow container of excellent physical and mechanical properties, has the barrier to materials such as nitrogen, many organic solvents, grease class and spices.Select for use compatilizer to help forming in the nylon semifinished piece stratiform barrier structure.Add antistatic additive, this is based on the security consideration of making paint, gasoline drum.The present invention has good barrier index: the loss rate index that the HDPE paint can holds solvent is, stores dimethylbenzene under the room temperature, places loss rate＜2% 180 days.And injection moulding does not nearly all produce the leftover bits that need melt down processing in whole process.The work capacity of processing behind the goods seldom, instant effect, therefore, the present invention is significant.
World's coating total make sustainable development, total make is above 100,000,000 tons.China's plastic product output surpasses 6,000,000 tons, steps into the row of four big producing countries, and the plastic package material development is rapid, and its output has surpassed cardboard and metal and occupied first.Its growth rate is one of the fastest in the world country.And packing is the first user of plastics consumption, accounts for 30% of plastics overall consumption, and is good growth always.In the development of national economy all departments, the investment of plastics industry is also much lower than metal, and the investment of producing 1 ton of plastics only is the 1/2-1/3 of non-metals, if by volume calculate then lower (being about 1/10).Add high mechanization, the automation of plastic working, in the processing waste material seldom, and most recyclable utilization; And metal work energy consumption height not only, operation is numerous and diverse, needs multiple specialized equipment, and waste product, leftover pieces are up to 50%.Therefore, the industrial sector Comprehensive Assessment, 1 ton of plastics can replace 5-6 ton steel.
(4), description of drawings
Be described further below in conjunction with accompanying drawing and by embodiment:
Fig. 1 is the screw head scheme drawing of injection moulding machine of the present invention,
Fig. 2 is an injection moulding machine nozzle section-drawing of the present invention,
Fig. 3 is injection moulding machine sprue bush cross-sectional plane of the present invention and vertical cross-section scheme drawing.
(5), the specific embodiment
As shown in the figure: form the barrier structure of stratiform for being conducive to injection mo(u)lding, injection mo(u)lding machine nozzle, main flow Road lining, screw rod are particular design.
As shown in the figure, shown in Fig. 1-3, the nozzle 1 of injection moulding machine is key-way shape, the screw rod of injection moulding machine 4 front portions do not contain non-return ring, and screw head is sharp cone distal, and the cross section in nozzle hole is key-way shape.
Sprue bush 2 cross sections of mould are key-way shape 3, cast gate centered by the gate form.
Compare the spy who carries out as purpose to obtain the injection moulding barrier container with external barrier articles injection molding technology Different compatilizer development and cast gate, screw rod, designs of nozzles are not reported.
It is light, easy to process, handsome in appearance that injection moulding intercepts HDPE paint can quality, just progressively the substituted metal bucket. After increasing its barrier property, more can be widely used. The container that HDPE and PA blend make, barrier property, Good mechanical performance, price are limited to than in the pure HDPE high 25%, and the ratio of performance to price is reasonable, can be for using Producer accepts. Increasing sharply of coating output laid a good foundation for enlarging paint can market.
Application example: the preparation of sample: high density polyethylene (HDPE) (HDPE), nylon, compatilizer are being mixed at a high speed Close in the machine and mixed 2 minutes. The model that said mixture adds the production of Shanghai Plastic machinery plant is that SZ-100/80 moulds In the material injection moulding machine. Each section of injection machine temperature is 240 ℃, is 0.3 liter of goods with mixture injection moulding.
Barrier property test: with reference to the ASTMD2684-89 standard: adopt weight-loss method to measure the permeability of goods. The injection total capacity is 50% dimethylbenzene in the goods of weighing, with the aluminum-plastic composite membrane sealing, cools off after the weighing After weigh, be placed under the normal temperature condition, weighed once every 3 days, barrier property goes out oozing of 180 days dimethylbenzene Rate represents thoroughly:
Permeability=(180 Δ G/ testing time/net weight) 100%
Δ G: testing time inner penetration loss amount
Table 1
| The operation sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Polyethylene (HDPE) | 70 | 70 | 73 | 71 | 69 | 73 | 71 | 69 |
| The nylon consumption | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| The compatilizer model | A | B | A | A | A | B | B | B |
| The compatilizer consumption | 5 | 5 | 2 | 4 | 6 | 2 | 4 | 6 |
| Permeability | 0.9 | 0.4 | 1.1 | 0.8 | 1.2 | 0.6 | 0.3 | 0.7 |
The 2200J that polyethylene (HDPE) is produced for raising sub-petrochemical industry limited company, melt flow rate (MFR) is 5.0g/10min. Nylon is nylon 6, the 1013B that the trade mark is produced for Ube company.
Compatilizer model A is: the melt flow rate (MFR) of fusion-grafting 1.2%wt maleic anhydride is 2.30g/10min Polyethylene. Model B: the melt flow rate (MFR) of hot initiation grafting 1.2%wt maleic anhydride is 6.10g/10min Polyethylene. Embodiment shows: the goods of the compatilizer preparation of hot initiation grafting method preparation have better resistance Separating performance.
Table 2
| The operation sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Polyethylene %wt | 82 | 80 | 75 | 68 | 65 | 82 | 80 | 75 | 68 | |
| Nylon %wt | 18 | 20 | 25 | 32 | 35 | |||||
| The compatilizer model | B | B | B | B | B | B | B | B | B | B |
| Compatilizer consumption, in addition dosage % | 3 | 5 | 6 | 7 | 8 | 3 | 5 | 6 | 7 | 8 |
| Glass, in addition dosage % | 12 | 10 | 8 | 6 | 4 | |||||
| Permeability | 1.8 | 1.5 | 1.0 | 0.4 | 0.3 | 1.2 | 1.1 | 0.6 | 0.3 | 0.2 |
Table 3
| The operation sequence number | 1 | 2 | 3 | 4 | 5 |
| Polyethylene | 71 | 70 | 68 | 66 | 64 |
| Nylon | 25 | 25 | 25 | 25 | 25 |
| The compatilizer model | B | B | B | B | B |
| The | 4 | 4 | 4 | 4 | 4 |
| Antistatic additive | 0 | 1 | 3 | 5 | 7 |
| Sheet resistance Ω | 10 16 | 10 12 | 10 9 | 10 8 | 10 7 |
Present embodiment shows: add antistatic additive and can reduce product surface resistance.
Antistatic additive adopts anionic antistatic agent commonly used, and kind is more.
The preparation of compatilizer: the goods of the compatilizer preparation of hot initiation grafting method preparation have better barrier property
Compatilizer is a kind of reactive grafting thing, adopts hot initiation method preparation.
The base resin of reactive grafting comprises HDPE, LDPE, LLDPE, EVA and wherein two kinds or two Kind of above mixture adds the grafting monomer again: maleic acid, fumaric acid, acrylic acid, methacrylic acid and spread out Biological (acid anhydrides, salt, acid imide, ester). Also can the mutual mixture of above-mentioned grafted monomers as monomer, as Select one with the two of acrylic acid, methacrylic acid, also the two selects one in maleic acid, the fumaric acid.
The equipment of hot initiation grafting reaction plastifies, carries material, heat with single screw rod or double screw extruder The initiation grafting reaction is carried out in static mixer, and the reaction time is determined by the screw extruder screw speed. Grafting The monomer addition is in the scope of 0.1-10%wt, and reaction temperature is in 200-450 ℃ of scope, reaction time: 0.5-15 Divide.
The goods of the compatilizer preparation of hot initiation grafting method preparation have better barrier property.
Hot initiation grafting technical process is
Compatilizer: grafted monomers+grafting base resin+other auxiliary agent → screw extruder → static mixer → graft (compatilizer)
The compatilizer of hot initiation grafting method preparation is made the embodiment table:
| Sequence number | HD PE part | LLD PE part | LDP E part | EV A part | Maleic acid part | Fumaric acid part | Acrylic acid part | Methacrylic acid part | Maleic anhydride part |
| 1 | 100 | 1.2 | |||||||
| 2 | 100 | 1.2 | |||||||
| 3 | 100 | 1.2 | |||||||
| 4 | 100 | 1.2 |
| 5 | 70 | 30 | 2.5 | ||||||
| 6 | 60 | 40 | 3.0 | ||||||
| 7 | 40 | 60 | 4.5 | ||||||
| 8 | 50 | 50 | 2.5 | ||||||
| 9 | 50 | 30 | 20 | 0.5 | 0.5 | 0.5 | |||
| 10 | 100 | 0.5 | 1.0 | ||||||
| 11 | 100 | 0.8 | 1.2 | ||||||
| 12 | 70 | 30 | 7.8 |
Compatilizer is made for making injection mo(u)lding formation stratiform barrier structure
Claims (6)
1, isolation-type paint can is characterized in that constituting the PA of prescription following (A) 5-35% of isolation-type paint can, (B) HDPE of 55-93%, and (C) compatilizer of 2-10% is through the out-phase melting mixing and be formed by injection molding.
2, by the described isolation-type paint can of claim 1, it is characterized in that containing in the isolation-type paint can prescription antistatic additive of (D) 0.01-8%, also can be provided with the 1-20% glass fibre in addition.
3, by the described isolation-type paint can of claim 1, it is characterized in that compatilizer is the compatilizer of hot initiation grafting or the preparation of fusion-grafting method, prescription comprises base resin HDPE, LDPE, LLDPE, EVA and two or more miscellany wherein, adds the grafting monomer again: maleic acid, fumaric acid, acrylic acid, methyl acrylic acid and derivant thereof (acid anhydrides, salt, acid imide, ester) and mutual compound.
4, isolation-type paint can manufacturing equipment is conventional injection moulding machine, it is characterized in that the screw head of injection moulding machine has only a sharp cone distal.
5, by the described isolation-type paint can manufacturing equipment of claim 1, the burner bore cross-sectional plane that it is characterized in that injection moulding machine is a key-way shape; Mould sprue cross-sectional plane is a key-way shape; Use mould gate form be central gate.
6, isolation-type paint can manufacture method: it is characterized in that high density polyethylene (HDPE) (HDPE), nylon, compatilizer were mixed 1-10 minute said mixture injection mo(u)lding in the injection molding machine in high-speed mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011270233A CN1184106C (en) | 2001-07-25 | 2001-07-25 | Isolation-type paint can and its manufacture method and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011270233A CN1184106C (en) | 2001-07-25 | 2001-07-25 | Isolation-type paint can and its manufacture method and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN1330024A true CN1330024A (en) | 2002-01-09 |
| CN1184106C CN1184106C (en) | 2005-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011270233A Expired - Fee Related CN1184106C (en) | 2001-07-25 | 2001-07-25 | Isolation-type paint can and its manufacture method and equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585325A (en) * | 2011-01-18 | 2012-07-18 | 合肥杰事杰新材料股份有限公司 | High density polyethylene (HDPE)-PA66 composite barrier material and preparation method thereof |
| CN103319765A (en) * | 2012-03-22 | 2013-09-25 | 金发科技股份有限公司 | Conductive barrier polyethylene composition, its preparation method and application |
| CN114605721A (en) * | 2022-02-24 | 2022-06-10 | 金发科技股份有限公司 | Non-crosslinked polyethylene material and preparation method and application thereof |
-
2001
- 2001-07-25 CN CNB011270233A patent/CN1184106C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585325A (en) * | 2011-01-18 | 2012-07-18 | 合肥杰事杰新材料股份有限公司 | High density polyethylene (HDPE)-PA66 composite barrier material and preparation method thereof |
| CN102585325B (en) * | 2011-01-18 | 2014-12-03 | 合肥杰事杰新材料股份有限公司 | High density polyethylene (HDPE)-PA66 composite barrier material and preparation method thereof |
| CN103319765A (en) * | 2012-03-22 | 2013-09-25 | 金发科技股份有限公司 | Conductive barrier polyethylene composition, its preparation method and application |
| CN103319765B (en) * | 2012-03-22 | 2015-12-16 | 金发科技股份有限公司 | A kind of conduction, barrier polyethylene composition and its preparation method and application |
| CN114605721A (en) * | 2022-02-24 | 2022-06-10 | 金发科技股份有限公司 | Non-crosslinked polyethylene material and preparation method and application thereof |
| CN114605721B (en) * | 2022-02-24 | 2023-11-03 | 金发科技股份有限公司 | Non-crosslinked polyethylene material and preparation method and application thereof |
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| Publication number | Publication date |
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| CN1184106C (en) | 2005-01-12 |
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Owner name: SINOPEC YANGZI PETROCHEMICAL CO. Free format text: FORMER NAME OR ADDRESS: YANGZI PETROCHEMICAL CO., LTD. |
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Address after: Dachang District, Jiangsu, Xinhua Road, Nanjing Patentee after: Sinopec Yangzi Petrochemical Company Ltd. Address before: Dachang District, Jiangsu, Xinhua Road, Nanjing Patentee before: Yangtze Petrochemical Industry Co., Ltd. |
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