CN102219951B - Material of container for depositing superhigh-purity reagent - Google Patents
Material of container for depositing superhigh-purity reagent Download PDFInfo
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- CN102219951B CN102219951B CN 201110111443 CN201110111443A CN102219951B CN 102219951 B CN102219951 B CN 102219951B CN 201110111443 CN201110111443 CN 201110111443 CN 201110111443 A CN201110111443 A CN 201110111443A CN 102219951 B CN102219951 B CN 102219951B
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Abstract
The invention discloses a material of a container for depositing a superhigh-purity reagent. According to the material provided by the invention, polyethylene with three molecular weights and a small quantity of polytetrafluoroethylene are selected as materials, and the materials include the following components by weight percent: 3-5% of low molecular weight polyethylene, 80-82% of common molecular weight polyethylene, 5-8% of high molecular weight polyethylene, 1-5% of superhigh molecular weight polyethylene and 2-9% of common molecular weight polytetrafluoroethylene; all materials are uniformly mixed and then are prepared into the plastic container through utilizing a plastic processing device and a plastic mould. The materials can extremely express the advantages of the polyethylene with different molecular weights and different molecular densities and also generate the different corrosion-resisting and anti-oxidizing effects. The plastic container which is manufactured by the material has the advantages of strong acid resistance, strong base resistance, strong oxidization resistance and good compatible performance; and physical performances and mechanical performances of the plastic container are better than those of the traditional common plastic container.
Description
Technical field
The present invention relates to wrapping material, be specifically related to a kind of material of producing the superhigh-purity reagent container.
Background technology
The kind of plastic packaging containers is more in the prior art, the service requirements of plastic packaging containers in most of industries, as long as satisfy with low cost, durable, have certain intensity, a certain toughness, ageing resistance is better, and the plastic containers that are used for wrap food, medicine also should satisfy not the requirement to aspects such as food, medicine pollute.Produce the employed material of plastic packaging containers at present and mainly contain vinyon, polyvinyl chloride etc.Because the polyethylene odorless, nontoxic, the feel ceraceous has good resistance to low temperature, and chemical stability is good, and the erosion of most of soda acids of ability general requirement is insoluble to common solvent under the normal temperature, and water-absorbent is little, and electrical insulation capability is good.Therefore, in the production of packaging vessel, obtained using widely.
But the existing material of producing the superhigh-purity reagent container all is the polyethylene of selecting unimodal molecular weight, single molecular density for use basically.Because different molecular weight, different densities, the poly physics of different molecular structures, chemistry, mechanical property differ bigger.The acid resistance of some plastic containers is better, but alkaline resistance properties is relatively poor, and the alkaline resistance properties of some plastic containers is better, but acid resistance is relatively poor, the plastic containers of some acid-fast alkali-proof better performances, but its antioxidant property again can be relatively poor.Owing in the production process of plastics, need to add some kinds of auxiliary materials, and also can contain impurity in the material of plastics.Therefore, the plastic containers of above-mentioned poor-performing in one aspect are after a kind of solution or reagent are placed into, plastic containers will be corroded, and at this moment some supplementary additives in the material and impurity can be dissolved in the liquid or solvent that is installed with ionic state or with particulate form (comprising metal ion and particle).And in some special industries, as semiconductor integrated circuit, the TFT-LCD flat-panel screens, the photovoltaic industry for the production of electronic chemical product, then higher to the service requirements of packing plastic bottle.Contain various impurity in liquid after owing to be corroded or the solvent, this liquid or solvent will cause the short circuit of electron device, or open circuit, or the change of electrical property, cause product rejection.
Along with developing rapidly of semiconductor technology, more and more higher to the requirement of the high-purity scavenging solution of ultra-clean or reagent, its purity and cleanliness factor have very great influence to yield rate, electrical property and the reliability of unicircuit.The solution of ultra-high purity and/or reagent have been widely used in aspects such as cleaning in semi-conductor, the large-scale integrated circuit course of processing, drying as a kind of important microelectronics chemistry product.Along with the finish size of IC has entered submicron, deep-submicron epoch, solution and/or reagent to supporting with it ultrapure clear height purity degree are had higher requirement, require particle and foreign matter content to reach the SEMIC8-SEMI C12 standard of semiconductor equipment and material structure formulation, wherein the control of metallic cation content is in the PPT rank, and granular size is controlled below 0.2 μ m.
In order to satisfy electron trade to the requirement of ultra-clean and high pure chemical reagent, satisfy the requirement with low cost of plastic containers simultaneously, be necessary to develop a kind of plastic containers of New Type Material.
Summary of the invention
The objective of the invention is to overcome the defective that exists in the prior art, design a kind of material of depositing the superhigh-purity reagent container, these plastic containers are difficult for being corroded by strong acid, highly basic, strong oxidizer, compatible superior performance, and the basic material cost with existing plastic containers of the cost of this material is basic identical.
For achieving the above object, technical scheme of the present invention provides a kind of material that superhigh-purity reagent is used container of depositing, it is characterized in that, described material is selected polyethylene and a spot of tetrafluoroethylene of 3 kinds of molecular weight at least for use, including in described material is 3%～5% low molecular weight polyethylene by weight percentage, 80%～82% common molecular weight polyethylene, 5%～8% High molecular weight polyethylene, the tetrafluoroethylene of 1%～5% ultrahigh molecular weight polyethylene(UHMWPE) and 9%～2% common molecular weight, the molecular weight control of described tetrafluoroethylene is about 1,040,000, and above-mentioned materials mixes the back and makes described plastic containers by device of plastic processing and mould of plastics; The polyethylene and the highdensity polyethylene that in described low molecular weight polyethylene, common molecular weight polyethylene and High molecular weight polyethylene, include low-density polyethylene, middle density again respectively; In the polythene material of described various molecular weight, the shared weight percent of described low-density polyethylene is 2%～8%, the shared weight percent of polyethylene of density is 12%～15% in described, and the shared weight percent of described highdensity polyethylene is 77%～86%; Its density of described high density polyethylene(HDPE) is 0.947～0.967g/cm
3
Wherein, the molecular weight control of described low molecular weight polyethylene is 50,000 to 100,000, the molecular weight control of described common molecular weight polyethylene is 100,000 to 300,000, the molecular weight control of described High molecular weight polyethylene is 300,000 to 500,000, and the molecular weight control of described ultrahigh molecular weight polyethylene(UHMWPE) is 3,000,000 to 6,000,000.
Advantage of the present invention and beneficial effect are: owing to include the polythene material of different molecular weight, differing molecular density and contain a spot of tetrafluoroethylene in polythene material of the present invention, these materials can perform to the advantage separately of different molecular weight, differing molecular density polyethylene and tetrafluoroethylene ultimate attainment, but also have produced different anticorrosion effects.The plastic containers that come out with this material produce can anti-strong acid, highly basic, strong oxidation, compatible superior performance, the physicals of these plastic containers, mechanical property might as well with in existing common plastics container.Experiment shows the plastic containers with this kind material produce, after packing into all kinds of solution in the container, can effectively control the content of the metal ion that container separates out in the PPT rank, dust granules can be controlled in 0.2 μ m, and the content of above-mentioned metal ion and dust satisfies the SEMI C8-C12 standard of semiconductor equipment and material structure formulation fully.And the cost of these plastic containers and existing plastic containers is basic identical or lower slightly.
Embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
The concrete technical scheme of implementing of the present invention provides a kind of material that superhigh-purity reagent is used container of depositing, this material is selected polyethylene and a spot of tetrafluoroethylene of 3 kinds of molecular weight at least for use, including in described material is 3%～5% low molecular weight polyethylene by weight percentage, 80%～82% common molecular weight polyethylene, 5%～8% High molecular weight polyethylene, 1%～5% ultrahigh molecular weight polyethylene(UHMWPE) and 9%～2% common molecular weight ptfe, the molecular weight control of described tetrafluoroethylene is about 1,040,000, and above-mentioned materials mixes the back and makes described plastic containers by device of plastic processing and mould of plastics.
In the present invention, preferable technical scheme has, and includes polyethylene and the highdensity polyethylene of low-density polyethylene, middle density in described low molecular weight polyethylene, common molecular weight polyethylene and High molecular weight polyethylene again respectively.In the polythene material of described various molecular weight, the shared weight percent of described low-density polyethylene is 2%～8%, the shared weight percent of polyethylene of density is 12%～15% in described, and the shared weight percent of described highdensity polyethylene is 77%～86%.
In the present invention, preferable technical scheme also has, can be with the molecular weight control of the described low molecular weight polyethylene polymkeric substance at 50,000 to 100,000 ethylene molecules, can be with the molecular weight control of the described common molecular weight polyethylene polymkeric substance at 100,000 to 300,000 ethylene molecules, can be with the molecular weight control of the described High molecular weight polyethylene polymkeric substance at 300,000 to 500,000 ethylene molecules, can be with the molecular weight control of the described ultrahigh molecular weight polyethylene(UHMWPE) polymkeric substance at 3,000,000 to 6,000,000 ethylene molecules.
For the production of its density of high density polyethylene(HDPE) of hollow piece generally at 0.947-0.967g/cm
3, melt mass flow rate (MFR) is at 0.01-1.0g/10min; Make tun (more than 200 liters) and then need use HMW (high molecular weight)-high density polyethylene.
Embodiment 1
The present invention includes by weight percentage low molecular weight polyethylene 3%, 82% common molecular weight polyethylene, 5% High molecular weight polyethylene, 2% ultrahigh molecular weight polyethylene(UHMWPE) and 8% common molecular weight ptfe in described material, join in the device of plastic processing after above-mentioned materials mixed, make described plastic containers by device of plastic processing and mould of plastics.Join in the device of plastic processing after above-mentioned materials mixed, make described plastic containers by device of plastic processing and mould of plastics.
The shared weight percent of low-density polyethylene is 5% in the present invention, and the shared weight percent of the polyethylene of middle density is 12%, and the shared weight percent of highdensity polyethylene is 83%.
Embodiment 2
The present invention includes by weight percentage low molecular weight polyethylene 5%, 81% common molecular weight polyethylene, 8% High molecular weight polyethylene, 3% ultrahigh molecular weight polyethylene(UHMWPE) and 3% common molecular weight ptfe in described material, join in the device of plastic processing after above-mentioned materials mixed, make described plastic containers by device of plastic processing and mould of plastics.Join after above-mentioned materials mixes in the device of plastic processing, make described plastic containers by device of plastic processing and mould of plastics.
The shared weight percent of low-density polyethylene is 5% in the present invention, and the shared weight percent of the polyethylene of middle density is 13%, and the shared weight percent of highdensity polyethylene is 82%.All the other and embodiment 1 are identical.
Embodiment 3
The present invention in described material, include by weight percentage low molecular weight polyethylene 4%, 80% common molecular weight polyethylene, 4% High molecular weight polyethylene, 1% ultrahigh molecular weight polyethylene(UHMWPE) and and 9% common molecular weight ptfe, join in the device of plastic processing after above-mentioned materials mixed, make described plastic containers by device of plastic processing and mould of plastics.Join in the device of plastic processing after above-mentioned materials mixed, make described plastic containers by device of plastic processing and mould of plastics.
The shared weight percent of low-density polyethylene is 8% in the present invention, and the shared weight percent of the polyethylene of middle density is 15%, and the shared weight percent of highdensity polyethylene is 77%.All the other and embodiment 1 are identical.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. deposit the material that superhigh-purity reagent is used container for one kind, it is characterized in that, described material is selected polyethylene and a spot of tetrafluoroethylene of 3 kinds of molecular weight at least for use, including in described material is 3%～5% low molecular weight polyethylene by weight percentage, 80%～82% common molecular weight polyethylene, 5%～8% High molecular weight polyethylene, the tetrafluoroethylene of 1%～5% ultrahigh molecular weight polyethylene(UHMWPE) and 2%～9% common molecular weight, the molecular weight control of described tetrafluoroethylene is 1,040,000, and above-mentioned materials mixes the back and makes described plastic containers by device of plastic processing and mould of plastics; The polyethylene and the highdensity polyethylene that in described low molecular weight polyethylene, common molecular weight polyethylene and High molecular weight polyethylene, include low-density polyethylene, middle density again respectively; In the polythene material of described various molecular weight, the shared weight percent of described low-density polyethylene is 2%～8%, the shared weight percent of polyethylene of density is 12%～15% in described, and the shared weight percent of described highdensity polyethylene is 77%～86%; Its density of described high density polyethylene(HDPE) is 0.947～0.967g/cm
3The molecular weight control of described low molecular weight polyethylene is 50,000 to 100,000, the molecular weight control of described common molecular weight polyethylene is 100,000 to 300,000, the molecular weight control of described High molecular weight polyethylene is 300,000 to 500,000, and the molecular weight control of described ultrahigh molecular weight polyethylene(UHMWPE) is 3,000,000 to 6,000,000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110111443 CN102219951B (en) | 2011-05-03 | 2011-05-03 | Material of container for depositing superhigh-purity reagent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110111443 CN102219951B (en) | 2011-05-03 | 2011-05-03 | Material of container for depositing superhigh-purity reagent |
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| CN102219951A CN102219951A (en) | 2011-10-19 |
| CN102219951B true CN102219951B (en) | 2013-09-04 |
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| CN 201110111443 Active CN102219951B (en) | 2011-05-03 | 2011-05-03 | Material of container for depositing superhigh-purity reagent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102942730A (en) * | 2012-11-26 | 2013-02-27 | 贵阳益润塑料包装容器有限公司 | Method for modifying high density polyethylene to prepare chemical container |
| CN107828114B (en) * | 2017-11-28 | 2020-04-10 | 安徽益顺塑业有限公司 | Method for improving air permeability resistance of medicinal plastic container |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735504A (en) * | 2009-12-30 | 2010-06-16 | 江阴市润玛电子材料有限公司 | Raw material for producing plastic container |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735504A (en) * | 2009-12-30 | 2010-06-16 | 江阴市润玛电子材料有限公司 | Raw material for producing plastic container |
Non-Patent Citations (1)
| Title |
|---|
| 郁文娟.第四节 耐化学药品性.《硬质塑料包装容器的生产与设计》.中国纺织出版社,2009,第51-53页. * |
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