CN103664500B - A kind of method processing PVC dichloromethane impregnating experiment waste liquid - Google Patents
A kind of method processing PVC dichloromethane impregnating experiment waste liquid Download PDFInfo
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- CN103664500B CN103664500B CN201310664077.4A CN201310664077A CN103664500B CN 103664500 B CN103664500 B CN 103664500B CN 201310664077 A CN201310664077 A CN 201310664077A CN 103664500 B CN103664500 B CN 103664500B
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- Prior art keywords
- pvc
- waste liquid
- dichloromethane
- layering
- liquor
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002474 experimental method Methods 0.000 title claims abstract description 16
- 238000012545 processing Methods 0.000 title abstract description 6
- 239000000706 filtrate Substances 0.000 claims abstract description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000009288 screen filtration Methods 0.000 claims abstract description 4
- 239000000047 product Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007886 mutagenicity Effects 0.000 description 1
- 231100000299 mutagenicity Toxicity 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to a kind of method processing PVC dichloromethane impregnating experiment waste liquid, the method comprises the following steps: the container (1) waste liquid finishing PVC dichloromethane impregnating experiment being loaded sealing; Then be refrigerated to 0 DEG C, after 1h, obtain the waste liquid of layering; (2) use the waste liquid of layering described in 80 object screen filtration, obtain filtrate A, PVC residue respectively; (3) adopt vacuum pump and Bush's funnel at room temperature through decompress filter method described PVC residue, obtain liquor B; (4) collect described filtrate A and described liquor B, repeating said steps (2) ~ (3), until namely moisture content obtains the reagent for detecting PVC plastic degree lower than 0.06 ~ 0.04%.The present invention is simple, convenient, cost is low.
Description
Technical field
The present invention relates to PVC technical field, particularly relate to a kind of method processing PVC dichloromethane impregnating experiment waste liquid.
Background technology
Dichloromethane impregnating experiment is the important test item of PVC-U material plastics, in order to characterize degree of plasticification and the homogeneity of PVC product.The long-term quiet night directly affecting tubing is pressed performance by the degree of plasticification of tubing, has direct impact to the work-ing life of tubing.Large quantifier elimination and experiment show the hard PVC of modification, and degree of plasticification is about less than 60% time, and its shock strength, tensile strength values are all lower and increase with degree of plasticification claims ascendant trend.When the reason that this phenomenon occurs is that degree of plasticification is low, after the cooling of PVC particle, the some particles crystallization again of the primary crystalline region of melting, the crystalline network running through whole goods cannot be formed, also just cannot form the movement of molecular chain.When degree of plasticification is very high, because PVC experienced by shear at high temperature effect, produce degraded, thus cause intensity to reduce.
Use dichloromethane impregnating experiment the degree of plasticification of PVC can be detected, its principle is that methylene dichloride penetrates between the segment of crystalline network, makes product surface present floss, come off fluffing etc.And when degree of plasticification height, the melting of most of PVC primary particle, defines the crystalline network run through in goods, the crystalline network run through has fettered amorphous portion, and the chain that methylene dichloride is difficult to dissolve in crystalline network is intersegmental, only produces a little swelling.Therefore, the degree of plasticification using dichloromethane impregnating experiment to detect PVC product be a kind of simply, fast, almost without any need for the detection method of complex instrument, but the waste liquid after having detected but is not fine process.
Methylene dichloride is the non-flammable reagent of a kind of lower boiling, can be dissolved in the water of about 50 times, have toxicity mutagenicity and carinogenicity, in underground water, have depot action, also have pollution to air.Therefore having detected the liquid waste disposal after PVC product will have the method for specialty to go process.The treatment process of current common laboratory is that the process department of first then waste collection being given together specialty goes process.But such processing mode needs very high expense, and be also the very large waste of one with regard to the methylene dichloride waste liquid detecting PVC product.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method of simple to operate, process PVC dichloromethane impregnating experiment waste liquid that cost is low.
For solving the problem, a kind of method processing PVC dichloromethane impregnating experiment waste liquid of the present invention, comprises the following steps:
(1) the waste liquid finishing PVC dichloromethane impregnating experiment is loaded the container of sealing; Then be refrigerated to 0 DEG C, after 1h, obtain the waste liquid of layering;
(2) use the waste liquid of layering described in 80 object screen filtration, obtain filtrate A, PVC residue respectively;
(3) adopt vacuum pump and Bush's funnel at room temperature through decompress filter method described PVC residue, obtain liquor B;
(4) collect described filtrate A and described liquor B, repeating said steps (2) ~ (3), until namely moisture content obtains the reagent for detecting PVC plastic degree lower than 0.06 ~ 0.04%.
The present invention compared with prior art has the following advantages:
1, because first methylene dichloride waste liquid is put into the environment of sealing by the present invention, reduce temperature simultaneously, therefore, purify effectively can reduce energy consumption compared to distillation method under the environment that existing laboratory equipment is complete, simultaneously, waste liquid after process can meet the reagent requirement again testing PVC plastic degree, environmental protection, economy.
2, the present invention is simple, convenient, cost is low.
Embodiment
Process a method for PVC dichloromethane impregnating experiment waste liquid, comprise the following steps:
(1) the waste liquid finishing PVC dichloromethane impregnating experiment is loaded the container of sealing; Then be refrigerated to 0 DEG C, after 1h, obtain the waste liquid of layering.
(2) use the waste liquid of 80 object screen filtration layerings, obtain filtrate A, PVC residue respectively.
(3) adopt vacuum pump and Bush's funnel at room temperature through decompress filter method PVC residue, obtain liquor B.
(4) collect filtrate A and liquor B, repeating step (2) ~ (3), until namely moisture content obtains the reagent for detecting PVC plastic degree lower than 0.06 ~ 0.04%.
Claims (1)
1. process a method for PVC dichloromethane impregnating experiment waste liquid, comprise the following steps:
(1) the waste liquid finishing PVC dichloromethane impregnating experiment is loaded the container of sealing; Then be refrigerated to 0 DEG C, after 1h, obtain the waste liquid of layering;
(2) use the waste liquid of layering described in 80 object screen filtration, obtain filtrate A, PVC residue respectively;
(3) adopt vacuum pump and Bush's funnel at room temperature through decompress filter method described PVC residue, obtain liquor B;
(4) collect described filtrate A and described liquor B, repeating said steps (2) ~ (3), until namely moisture content obtains the reagent for detecting PVC plastic degree lower than 0.06 ~ 0.04%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664077.4A CN103664500B (en) | 2013-12-11 | 2013-12-11 | A kind of method processing PVC dichloromethane impregnating experiment waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664077.4A CN103664500B (en) | 2013-12-11 | 2013-12-11 | A kind of method processing PVC dichloromethane impregnating experiment waste liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103664500A CN103664500A (en) | 2014-03-26 |
| CN103664500B true CN103664500B (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310664077.4A Active CN103664500B (en) | 2013-12-11 | 2013-12-11 | A kind of method processing PVC dichloromethane impregnating experiment waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103664500B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6548561B1 (en) * | 1998-08-21 | 2003-04-15 | P-Tec Gmbh Polymertechnologie | Method and device for recovering pure PVC from plastic waste containing PVC |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4318850B2 (en) * | 2000-10-26 | 2009-08-26 | 月島環境エンジニアリング株式会社 | Method for reducing moisture contained in organic solvent |
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2013
- 2013-12-11 CN CN201310664077.4A patent/CN103664500B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6548561B1 (en) * | 1998-08-21 | 2003-04-15 | P-Tec Gmbh Polymertechnologie | Method and device for recovering pure PVC from plastic waste containing PVC |
Non-Patent Citations (1)
| Title |
|---|
| 曾家华.5.20 硬聚氯乙烯(PVC-U)管材二氯甲烷浸渍试验方法.《塑料标准汇编》.中国轻工业出版社,1997,(第1版),第926-930页. * |
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| CN103664500A (en) | 2014-03-26 |
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