CN106918569A - A kind of plastic part quality control method - Google Patents
A kind of plastic part quality control method Download PDFInfo
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- CN106918569A CN106918569A CN201710236846.9A CN201710236846A CN106918569A CN 106918569 A CN106918569 A CN 106918569A CN 201710236846 A CN201710236846 A CN 201710236846A CN 106918569 A CN106918569 A CN 106918569A
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- 229920003023 plastic Polymers 0.000 title claims abstract description 43
- 239000004033 plastic Substances 0.000 title claims abstract description 43
- 238000003908 quality control method Methods 0.000 title claims abstract description 21
- 239000000284 extract Substances 0.000 claims abstract description 136
- 239000000463 material Substances 0.000 claims abstract description 122
- 239000002994 raw material Substances 0.000 claims abstract description 69
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000000605 extraction Methods 0.000 claims description 79
- 239000003960 organic solvent Substances 0.000 claims description 46
- 239000002904 solvent Substances 0.000 claims description 31
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 30
- 230000009514 concussion Effects 0.000 claims description 24
- 238000001556 precipitation Methods 0.000 claims description 22
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 21
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- 239000003153 chemical reaction reagent Substances 0.000 claims description 18
- 230000001376 precipitating effect Effects 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 15
- 239000002178 crystalline material Substances 0.000 claims description 15
- 238000004090 dissolution Methods 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 15
- 229920000515 polycarbonate Polymers 0.000 claims description 12
- 229920001577 copolymer Polymers 0.000 claims description 11
- -1 Polypropylene Polymers 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 150000002148 esters Chemical class 0.000 claims description 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 239000004425 Makrolon Substances 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 6
- 239000004417 polycarbonate Substances 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 239000004800 polyvinyl chloride Substances 0.000 claims description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 claims description 5
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Natural products CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 16
- 238000002329 infrared spectrum Methods 0.000 description 15
- 239000000047 product Substances 0.000 description 11
- 239000012752 auxiliary agent Substances 0.000 description 10
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 238000004128 high performance liquid chromatography Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 4
- 239000004597 plastic additive Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000000638 solvent extraction Methods 0.000 description 4
- 238000000194 supercritical-fluid extraction Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 150000003384 small molecules Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000001819 mass spectrum Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- ZZIZZTHXZRDOFM-XFULWGLBSA-N tamsulosin hydrochloride Chemical compound [H+].[Cl-].CCOC1=CC=CC=C1OCCN[C@H](C)CC1=CC=C(OC)C(S(N)(=O)=O)=C1 ZZIZZTHXZRDOFM-XFULWGLBSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- WGWACCCAJWZIML-UHFFFAOYSA-N benzene;buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N.C1=CC=CC=C1 WGWACCCAJWZIML-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 230000002101 lytic effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- KUCOHFSKRZZVRO-UHFFFAOYSA-N terephthalaldehyde Chemical compound O=CC1=CC=C(C=O)C=C1 KUCOHFSKRZZVRO-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N2021/3595—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using FTIR
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention discloses a kind of plastic part quality control method, including：The organic extract liquid of part to be measured is obtained as extract to be measured, the organic extract liquid obtained by the raw material of the nominal trade mark of part to be measured is obtained as nominal extract；FFIR test is carried out to extract to be measured, the infrared spectrogram that obtains will be tested as infrared spectrogram to be measured, FFIR test is carried out to nominal extract, the infrared spectrogram that obtains as nominal infrared spectrogram will be tested；If infrared spectrogram to be measured is matched with nominal infrared spectrogram, judge that part to be measured is consistent with the raw material of the nominal trade mark, otherwise judge that part to be measured is inconsistent with the raw material of the nominal trade mark.The present invention realizes the identification of the part material trade mark using each raw material supplier's product grade formula the characteristics of different, and the problem of raw material can be changed with effective monitoring injection supplier, realizes the monitoring of injecting products quality.
Description
Technical field
The present invention relates to plastic part correlative technology field, particularly a kind of plastic part quality control method.
Background technology
With automotive energy-saving emission-reducing and light-weighted requirement, plastic products use in the car is more and more extensive.In order to
Control moulding quality, main engine plants generally using material accreditation inventory is set, different raw material are approved according to material category one by one
The method of the supplier products trade mark, the raw material to moulding carries out management and control.But with the fieriness that automobile market is competed, plastics
Components supplying business's injection molding cost pressure is growing day by day, and some plastic items supplier often deviates engineering drawing file
It is required that, by changing the method for the low price raw material approved without main engine plants come reduces cost, so as to increase injection parts exist
Failure risk when client uses.Supplier in order that accessory appearance and performance do not change, the material of the inexpensive material of replacing
Material type is often consistent with material type specified in drawing.
The different trade mark products of same type material, material and filer content are often not different, and difference is only helped with addition
The species and content of trace assistant in the formula of agent, i.e. material.The method of chemical substance in existing detection plastics, by gas phase
Combined gas chromatography mass spectrometry (GC-MS) or high performance liquid chromatography (HP-LC) technology first set up the standard curve of certain auxiliary agent, then detect product
The method of the content of the material in product.However, want the trade mark of Direct Recognition moulding raw material extremely difficult, at present both at home and abroad
There is not pertinent literature patent report.Main cause has at 2 points, one, formula for raw stock be the core technology machine of raw material supplier
It is close, it is impossible to full disclosure, while the product formula of the different trades mark of each raw material supplier is differed, therefore cannot be true
Set the goal detectable substance；2nd, up to tens kinds of the addition auxiliary agent that each modifying plastics formula sets and arrives, the commercially available plastics that can be used for change
The auxiliary agent of property amounts to up to up to ten thousand kinds.If according to the mode of prior art, workload and cost can be very big, considerably beyond enterprise
Affordability.
The content of the invention
Based on this, it is necessary to for the technical problem of the method high cost of chemical substance in prior art detection plastics,
A kind of plastic part quality control method is provided.
The present invention provides a kind of plastic part quality control method, including：
Extraction step, obtains the organic extract liquid of part to be measured as extract to be measured, obtains the part to be measured nominal
Organic extract liquid obtained by the raw material of the trade mark is used as nominal extract；
Spectrum test step, FFIR test is carried out to the extract to be measured, will test what is obtained
Infrared spectrogram carries out FFIR test as infrared spectrogram to be measured to the nominal extract, will survey
The infrared spectrogram that examination is obtained is used as nominal infrared spectrogram；
Judge step, if the infrared spectrogram to be measured is matched with the nominal infrared spectrogram, treated described in judgement
Survey part consistent with the raw material of the nominal trade mark, otherwise judge that the part to be measured is inconsistent with the raw material of the nominal trade mark.
Further, the extraction step, specifically includes：
Part to be measured is crushed and obtains crushed material to be measured, the raw material of the nominal trade mark of part to be measured crushed and is marked
Claim crushed material；
Weigh the crushed material to be measured and nominal crushed material of phase homogenous quantities；
If the raw material of the nominal trade mark of part to be measured are crystalline material, crushed material to be measured is added into organic extraction
Taking solvent carries out machinery concussion extraction, and used as extract to be measured, nominal crushed material is added to be had the organic solvent extract for obtaining
Machine extractant carries out machinery concussion extraction, and the organic solvent extract for obtaining is used as nominal extract；
If the raw material of the nominal trade mark of part to be measured are amorphism material, crushed material to be measured is added organic
Extractant carries out dissolution precipitation extraction, and the organic solvent extract for obtaining adds nominal crushed material as extract to be measured
Organic extraction solvent carries out dissolution precipitation extraction, and the organic solvent extract for obtaining is used as nominal extract.
Further, if the raw material of the nominal trade mark of part to be measured are crystalline material, will be to be measured
Crushed material adds organic extraction solvent to carry out machinery concussion and extracts, and the organic solvent extract for obtaining, will used as extract to be measured
Nominal crushed material adds organic extraction solvent to carry out machinery concussion and extracts, and the organic solvent extract for obtaining is used as nominal extraction
Liquid, specifically includes：
If the raw material of the nominal trade mark of part to be measured are crystalline material,：
Crushed material to be measured is soaked more than 72 hours with organic extraction solvent, then the machinery concussion extraction for carrying out more than 1 hour
Take, the organic solvent extract for obtaining is used as extract to be measured；
Nominal crushed material is soaked more than 72 hours with organic extraction solvent, then the machinery concussion extraction for carrying out more than 1 hour
Take, the organic solvent extract for obtaining is used as nominal extract.
Further, the crystalline material includes：Polypropylene, polyethylene, polyamide, polyethylene terephthalate
The filling-modified material of ester, polybutylene terephthalate (PBT), polyformaldehyde and its glass or miberal powder.
Further, if the raw material of the nominal trade mark of part to be measured are crystalline material, selection includes body
Product is than being 4:1~1:1 main body extractant and auxiliary extraction agent are used as extractant, and the main body extractant is methyl alcohol, described auxiliary
It is one or more in acetone, tetrahydrofuran, ethanol, dichloromethane to help extractant.
Further, if the raw material of the nominal trade mark of part to be measured are amorphism material, will treat
Survey crushed material add organic extraction solvent carry out dissolution precipitation extraction, the organic solvent extract for obtaining as extract to be measured,
Nominal crushed material addition organic extraction solvent is carried out into dissolution precipitation extraction, the organic solvent extract for obtaining is used as nominal extraction
Liquid, specifically includes：
If the raw material of the nominal trade mark of part to be measured are amorphism material,：
Crushed material to be measured is dissolved using organic solvent, precipitating reagent precipitation is fully added after dissolving, stood 10 minutes
To after 60 minutes, the limpid extract in upper strata is drawn as extract to be measured with suction pipe；
Nominal crushed material is dissolved using organic solvent, precipitating reagent precipitation is fully added after dissolving, stood 10 minutes
To after 60 minutes, the limpid extract in upper strata is drawn as nominal extract with suction pipe.
Further, the amorphism material includes：Polyvinyl chloride, polystyrene, acrylonitrile-butadiene-benzene second
Alkene copolymer, makrolon, polycarbonate/acrylonitrile-butadiene-phenylethene copolymer alloy, esters of acrylic acid rubber-propylene
The filling-modified material of nitrile-styrol copolymer and its glass or miberal powder.
Further：
If the raw material are the filling-modified material of polyvinyl chloride and its glass or miberal powder, tetrahydrofuran conduct is chosen
The organic solvent, chooses acetone or methyl alcohol as the precipitating reagent；
If the raw material are the filling-modified material of polystyrene and its glass or miberal powder, toluene is chosen as described
Organic solvent, chooses ether as the precipitating reagent；
If the raw material be acrylonitrile-butadiene-styrene copolymer, makrolon, polycarbonate/acrylonitrile-
BS alloy, esters of acrylic acid rubber-acrylonitrile-styrol copolymer and its glass or miberal powder are filled out
Fill material modified, choose toluene or tetrahydrofuran as the organic solvent, choose methyl alcohol or ethanol as the precipitating reagent.
Further, it is described that FFIR test is carried out to the extract to be measured, will test what is obtained
Infrared spectrogram carries out FFIR test as infrared spectrogram to be measured to the nominal extract, will survey
The infrared spectrogram that examination is obtained is specifically included as nominal infrared spectrogram：
After the extract to be measured is filtered and dried, the solid of gained and KBr are blended compressing tablet, to the pressure for obtaining
Piece carries out FFIR test, the infrared spectrogram for obtaining will be tested as infrared spectrogram to be measured, to described
After nominal extract is filtered and dried, the solid of gained and KBr are blended compressing tablet, the compressing tablet to obtaining carries out Fourier change
Examination of infrared spectrum is changed, the infrared spectrogram that obtains as nominal infrared spectrogram will be tested.
Further, the extract to be measured is filtered by the filter membrane that aperture is 0.20~0.45 μm, to institute
Nominal extract is stated to be filtered by the filter membrane that aperture is 0.20~0.45 μm.
Further, the judgement step, specifically includes：
The Similarity matching degree of the infrared spectrogram to be measured and the nominal infrared spectrogram is calculated, if Similarity matching degree
During more than preset matching degree threshold value, judge that the part to be measured is consistent with the raw material of the nominal trade mark, otherwise judge described to be measured
Part is inconsistent with the raw material of the nominal trade mark.
The present invention incorporates plastic additive abstraction technique and mass spectrum database technology, using inexpensive detection method：Fourier
Transform infrared spectroscopy (FTIR) method substitutes traditional GC-MS and HP-LC detection means, is contrasted by black box, i.e., material
The uncertain plastic part of the trade mark carries out the contrast of auxiliary agent extract infrared spectrum with the clear and definite material of the trade mark, is requiring no knowledge about
On the premise of material additive species and content, whether the infrared spectrum spectrogram for judging the two extract by mathematical algorithm matches,
And then judge whether the two material prescription is consistent.Different spy is formulated using each raw material supplier's product grade
Point realizes the identification of the part material trade mark, can change the problem of raw material with effective monitoring injection supplier, realizes that injection is produced
The monitoring of quality.Have clearly fixed to the part material trade mark the present invention is especially suitable in plastic part drawing or associated documents
The identification of the automobile industry plastic part material trademark of justice.
Brief description of the drawings
Fig. 1 is a kind of workflow diagram of plastic part quality control method of the invention；
Fig. 2 is the infrared spectrum contrast schematic diagram in preferred embodiment 1；
Fig. 3 is the infrared spectrum contrast schematic diagram in preferred embodiment 2.
Specific embodiment
The present invention will be further described in detail with specific embodiment below in conjunction with the accompanying drawings.
It is as shown in Figure 1 a kind of workflow diagram of plastic part quality control method of the invention, including：
Step S101, obtains the organic extract liquid of part to be measured as extract to be measured, obtains the part to be measured nominal
Organic extract liquid obtained by the raw material of the trade mark is used as nominal extract；
Step S102, FFIR test is carried out to the extract to be measured, by test obtain it is infrared
Spectrogram carries out FFIR test as infrared spectrogram to be measured to the nominal extract, will test
The infrared spectrogram for arriving is used as nominal infrared spectrogram；
Step S103, if the infrared spectrogram to be measured is matched with the nominal infrared spectrogram, treats described in judgement
Survey part consistent with the raw material of the nominal trade mark, otherwise judge that the part to be measured is inconsistent with the raw material of the nominal trade mark.
Specifically, step S101 passes through the drawing file acquisition of information nominal trade mark of part to be measured first, then to be measured
The raw material of part and the nominal trade mark of part to be measured are extracted respectively, and extraction process is synchronously carried out, when treatment conditions and reaction
Between it is identical, obtain extract to be measured and nominal extract, step S102 then carries out Fourier to extract to be measured and nominal extract
Leaf transformation infrared spectrum (FTIR) test obtains infrared spectrogram to be measured and nominal infrared spectrogram, infrared spectrometer measurement wave band
For：500~2500cm of wave-number range-1, 4~8cm of resolution ratio-1, scanning times：8~64.Last basis in step s 103 is treated
Survey infrared spectrogram and whether nominal infrared spectrogram matches to judge whether part to be measured is consistent with the raw material of the nominal trade mark.
The present invention incorporates plastic additive abstraction technique and mass spectrum database technology, using inexpensive detection method：Fourier
Transform infrared spectroscopy (FTIR) method substitutes traditional GC-MS and HP-LC detection means, is contrasted by black box, i.e., material
The uncertain plastic part of the trade mark carries out the contrast of auxiliary agent extract infrared spectrum with the clear and definite material of the trade mark, is requiring no knowledge about
On the premise of material additive species and content, whether the infrared spectrum spectrogram for judging the two extract by mathematical algorithm matches,
And then judge whether the two material prescription is consistent.Different spy is formulated using each raw material supplier's product grade
Point realizes the identification of the part material trade mark, can change the problem of raw material with effective monitoring injection supplier, realizes that injection is produced
The monitoring of quality.Have clearly fixed to the part material trade mark the present invention is especially suitable in plastic part drawing or associated documents
The identification of the automobile industry plastic part material trademark of justice.
Wherein in one embodiment, the step S101 is specifically included：
Part to be measured is crushed and obtains crushed material to be measured, the raw material of the nominal trade mark of part to be measured crushed and is marked
Claim crushed material；
Weigh the crushed material to be measured and nominal crushed material of phase homogenous quantities；
If the raw material of the nominal trade mark of part to be measured are crystalline material, crushed material to be measured is added into organic extraction
Taking solvent carries out machinery concussion extraction, and used as extract to be measured, nominal crushed material is added to be had the organic solvent extract for obtaining
Machine extractant carries out machinery concussion extraction, and the organic solvent extract for obtaining is used as nominal extract；
If the raw material of the nominal trade mark of part to be measured are amorphism material, crushed material to be measured is added organic
Extractant carries out dissolution precipitation extraction, and the organic solvent extract for obtaining adds nominal crushed material as extract to be measured
Organic extraction solvent carries out dissolution precipitation extraction, and the organic solvent extract for obtaining is used as nominal extract.
Specifically, the raw material of part to be measured and the nominal trade mark of part to be measured can be ground into plastic powders or granule
Son, after weighing phase homogenous quantities, is put into sample bottle, adds the organic extraction solvent of same species and volume, is extracted by machinery concussion
Take and dissolution precipitation extracting process, formation extract to be measured and nominal extract.
The present embodiment obtains extract to be measured and nominal extract by machinery concussion extraction and dissolution precipitation extracting process,
Existing extraction mode is mainly and is heated to reflux extraction, supercritical fluid extraction and high pressure solvent extraction, but existing
These extraction modes shortcomings have two, one is to need open firing or hyperpressure, experiment safety to be difficult to ensure that；Two are
Special equipment is needed, such as being heated to reflux extraction needs apparatus,Soxhlet's and heater, and supercritical fluid extraction need to
Wanting fluid extraction instrument, high pressure solvent extraction needs that the reactor of high pressure can be carried.
And the present embodiment is using machinery concussion extraction and dissolution precipitation extracting process, it is to avoid using being heated to reflux extraction
Method, supercritical fluid extraction and high pressure solvent extraction, experimentation are more safe and reliable, it is not necessary to special installation.
Wherein in one embodiment, if the raw material of the nominal trade mark of part to be measured are crystalline material,
Crushed material to be measured addition organic extraction solvent is then carried out into machinery concussion extraction, the organic solvent extract for obtaining is used as extraction to be measured
Liquid is taken, nominal crushed material addition organic extraction solvent is carried out into machinery concussion extraction, the organic solvent extract for obtaining is used as mark
Claim extract, specifically include：
If the raw material of the nominal trade mark of part to be measured are crystalline material,：
Crushed material to be measured is soaked more than 72 hours with organic extraction solvent, then the machinery concussion extraction for carrying out more than 1 hour
Take, the organic solvent extract for obtaining is used as extract to be measured；
Nominal crushed material is soaked more than 72 hours with organic extraction solvent, then the machinery concussion extraction for carrying out more than 1 hour
Take, the organic solvent extract for obtaining is used as nominal extract.
The present embodiment is first soaked more than 72 hours with organic extraction solvent, then carries out the machinery concussion extraction of more than 1 hour,
Polymer molecular chain intermolecular forces can be weakened so that segment can be moved, will be blended in the small molecule of plastic polymer matrix
Auxiliary agent departs from under the combination of segment, is dissolved in solvent, obtains corresponding extract.
Wherein in one embodiment, the crystalline material includes：Polypropylene, polyethylene, polyamide, poly- terephthaldehyde
The filling-modified material of sour glycol ester, polybutylene terephthalate (PBT), polyformaldehyde and its glass or miberal powder.
Wherein in one embodiment, if the raw material of the nominal trade mark of part to be measured are crystalline material, select
It is 4 to take including volume ratio:1~1:, used as extractant, the main body extractant is first for 1 main body extractant and auxiliary extraction agent
Alcohol, the auxiliary extraction agent is one or more in acetone, tetrahydrofuran, ethanol, dichloromethane.
Wherein in one embodiment, if the raw material of the nominal trade mark of part to be measured are amorphism material
Material, then carry out dissolution precipitation extraction by crushed material to be measured addition organic extraction solvent, and the organic solvent extract for obtaining is used as treating
Extract is surveyed, nominal crushed material addition organic extraction solvent is carried out into dissolution precipitation extraction, the organic solvent extract for obtaining is made
It is nominal extract, specifically includes：
If the raw material of the nominal trade mark of part to be measured are amorphism material,：
Crushed material to be measured is dissolved using organic solvent, precipitating reagent precipitation is fully added after dissolving, stood 10 minutes
To after 60 minutes, the limpid extract in upper strata is drawn as extract to be measured with suction pipe；
Nominal crushed material is dissolved using organic solvent, precipitating reagent precipitation is fully added after dissolving, stood 10 minutes
To after 60 minutes, the limpid extract in upper strata is drawn as nominal extract with suction pipe.
The present embodiment is first dissolved using organic solvent, polymer molecule is dissolved in together with small molecule auxiliary agent
Precipitating reagent precipitation is added after solvent, fully dissolving, selected precipitating reagent is the poor solvent of polymer molecule, and polymer can sink
Form sediment and small molecule auxiliary agent can continue to be dissolved in solvent, after standing 10 minutes to 60 minutes, then can draw upper strata with suction pipe clear
Clear extract obtains corresponding extract.
Wherein in one embodiment, the amorphism material includes：Polyvinyl chloride, polystyrene, acrylic nitrile-butadiene two
Alkene-styrol copolymer, makrolon, polycarbonate/acrylonitrile-butadiene-phenylethene copolymer alloy, esters of acrylic acid rubber
The filling-modified material of glue-acrylonitritrile-styrene resin and its glass or miberal powder.
Wherein in one embodiment：
If the raw material are the filling-modified material of polyvinyl chloride and its glass or miberal powder, tetrahydrofuran conduct is chosen
The organic solvent, chooses acetone or methyl alcohol as the precipitating reagent；
If the raw material are the filling-modified material of polystyrene and its glass or miberal powder, toluene is chosen as described
Organic solvent, chooses ether as the precipitating reagent；
If the raw material be acrylonitrile-butadiene-styrene copolymer, makrolon, polycarbonate/acrylonitrile-
BS alloy, esters of acrylic acid rubber-acrylonitrile-styrol copolymer and its glass or miberal powder are filled out
Fill material modified, choose toluene or tetrahydrofuran as the organic solvent, choose methyl alcohol or ethanol as the precipitating reagent.
It is described that FFIR test is carried out to the extract to be measured wherein in one embodiment, will
The infrared spectrogram that test is obtained carries out FFIR as infrared spectrogram to be measured to the nominal extract
Test, will test the infrared spectrogram for obtaining as nominal infrared spectrogram, specifically include：
After the extract to be measured is filtered and dried, the solid of gained and KBr are blended compressing tablet, to the pressure for obtaining
Piece carries out FFIR test, the infrared spectrogram for obtaining will be tested as infrared spectrogram to be measured, to described
After nominal extract is filtered and dried, the solid of gained and KBr are blended compressing tablet, the compressing tablet to obtaining carries out Fourier change
Examination of infrared spectrum is changed, the infrared spectrogram that obtains as nominal infrared spectrogram will be tested.
Specifically, after extract to be measured and nominal extract being filtered and dried, by the solid and KBr of gained
(KBr) grinding and mixing, the infrared spectrum of drying residual solids is tested by KBr pressed disc methods.
Wherein in one embodiment, the extract to be measured was carried out by the filter membrane that aperture is 0.20~0.45 μm
Filter, is filtered to the nominal extract by the filter membrane that aperture is 0.20~0.45 μm.
The present embodiment falls red impurity and little particle in liquid by membrane filtration, it is ensured that experiment accuracy.
Wherein in one embodiment, the step S103 is specifically included：
The Similarity matching degree of the infrared spectrogram to be measured and the nominal infrared spectrogram is calculated, if Similarity matching degree
During more than preset matching degree threshold value, judge that the part to be measured is consistent with the raw material of the nominal trade mark, otherwise judge described to be measured
Part is inconsistent with the raw material of the nominal trade mark.
Specifically, Similarity matching degree is carried out to two infrared spectrums using Similarity matching degree (Similarity Match)
Calculate.Matching degree threshold value can be 90, when Similarity matching angle value shows the material trademark and the part of part to be measured more than 90
The material of drawing definition is identical, i.e., part material therefor to be measured is consistent with drawing definition.
It is using the beneficial effect produced by above-mentioned technical proposal：
(1) present invention incorporates plastic additive abstraction technique and infrared spectrum identification technology, a kind of plastic part is established
Whether quality control method, can effectively differentiate the plastic part material trademark method consistent with drawing, and then can monitor zero
Part injection supplier changes the problem of unconfirmed low price raw material；
(2) plastic additive of the present invention extraction is using machinery concussion extraction and dissolution/precipitation extraction, it is to avoid use
Extraction, supercritical fluid extraction and high pressure solvent extraction are heated to reflux, experimentation is more safe and reliable, it is not necessary to special
Different equipment.GC-MS and HP-LC methods are substituted using FTIR simultaneously, use cost is very low, be very suitable for being applied in enterprise；
(3) present invention is contrasted by black box, will the plastic part of the unknown trade mark carried out with the clear and definite material of the trade mark
Extract spectrogram contrast, on the premise of auxiliary agent species and content in requiring no knowledge about material, tell the two trade mark whether one
Cause；
(4) measurement sensitivity of the present invention is high, can mass disposal, while required amount of samples is few, it is only necessary to 1.0 grams or so,
From the big part of automobile such as bumper, instrument board framework to finding such as plastics are pop-stud, plastic gear can be detected.
The following is preferred embodiment：
Most preferred embodiment 1：
It is intended to detect whether the trade mark of certain vehicle fog lamp cover plate materials (PP) is consistent with the requirement in drawing：(1) by fog lamp
The files such as cover plate engineering drawing learn that the PP materials used by the part are that the A supplier products trade mark is the PP raw materials of X.Take the board
Number material 0.5g, while cutting automotive fog lamp cover plate part material 0.5g to be measured with cutter, two parts of samples are shredded
It is the plastic grain less than 0.005g, is respectively put into sample bottle, it is 1 to add methyl alcohol/tetrahydrofuran volume ratio：1 extract
2.0mL, after standing 96h, further carries out machinery concussion 1.5h, obtains the extract of material additive.(2) the two parts of extractions that will be obtained
Liquid is taken by 0.45 μm of filter, after filtering out the little particle impurity in extract, 20min is dried at 80 DEG C respectively, will be dried
The residual solids of gained are blended with 2mg KBr after dry, and carry out FFIR (FTIR) test, wherein wave number model
It is 500~2000cm to enclose-1, resolution ratio 4cm-1, scanning times are 32 times.Infrared spectrum (3) as shown in Figure 2 is obtained by red
Similarity matching degree (Similarity Match) analytic function of external spectrum treatment software Nicolet Omnic enters to infrared spectrum
Row Similarity matching degree is calculated, and spectrogram Similarity matching angle value is 92.7, the threshold value more than 90, it is believed that the material board of part to be measured
Number with the trade mark that the detail drawing is defined for X PP materials are identical, i.e., the trade mark of part material therefor to be measured and drawing definition phase
Symbol.
Most preferred embodiment 2：The step of this plastic items quality control method, is as described below.
It is intended to detect whether the trade mark of certain vehicle outside rear-view mirror case material (ASA) is consistent with the requirement in drawing：(1) pass through
The files such as outside rear-view mirror engineering drawing learn that the ASA materials used by the part are that the B supplier products trade mark is the ASA raw materials of Y.
The material 1.0g of the trade mark is taken, while automobile outer rear-view mirror housing part material 1.0g to be measured is cut with cutter, by two parts
It is plastic grain less than 0.005g that sample is shredded, and is respectively put into sample bottle, adds 10mL tetrahydrofurans as solvent, is stood
20min, lytic agent is dissolved in by the auxiliary agent in material and material, forms polymer lysate；It is subsequently adding 10mL methyl alcohol conducts
Precipitating reagent, polymer is precipitated.(2) after liquid staticly settles 20min, mixed liquor supernatant liquor 10mL is drawn with dropper, is passed through
0.45 μm of filter, after filtering out the little particle impurity in extract, 20min is dried by filtered fluid at 80 DEG C respectively, will be dried
The residual solids of gained are blended with 2mg KBr after dry, and carry out FFIR (FTIR) test, wherein wave number model
It is 500~2000cm to enclose-1, resolution ratio 4cm-1, scanning times are 32 times.Obtain infrared picture as shown in Figure 3.(3) by red
Similarity matching degree (Similarity Match) analytic function of external spectrum treatment software Nicolet Omnic is to two INFRARED SPECTRUMs
Figure carries out Similarity matching degree calculating, and spectrogram Similarity matching angle value is 62.4, the threshold value less than 90, show the material of part to be measured with
There is significant difference in the formula for raw stock of detail drawing definition, i.e., the trade mark and the drawing of part material therefor to be measured are defined not
Symbol.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (11)
1. a kind of plastic part quality control method, it is characterised in that including：
Extraction step, obtains the organic extract liquid of part to be measured as extract to be measured, obtains the nominal trade mark of part to be measured
Raw material obtained by organic extract liquid as nominal extract；
Spectrum test step, FFIR test is carried out to the extract to be measured, by test obtain it is infrared
Spectrogram carries out FFIR test as infrared spectrogram to be measured to the nominal extract, will test
The infrared spectrogram for arriving is used as nominal infrared spectrogram；
Judge step, if the infrared spectrogram to be measured is matched with the nominal infrared spectrogram, judge described to be measured zero
Part is consistent with the raw material of the nominal trade mark, otherwise judges that the part to be measured is inconsistent with the raw material of the nominal trade mark.
2. plastic part quality control method according to claim 1, it is characterised in that the extraction step, specific bag
Include：
Part to be measured is crushed and obtains crushed material to be measured, the raw material of the nominal trade mark of part to be measured crushed and obtains nominal powder
Mince；
Weigh the crushed material to be measured and nominal crushed material of phase homogenous quantities；
If the raw material of the nominal trade mark of part to be measured are crystalline material, add organic extraction molten crushed material to be measured
Agent carries out machinery concussion extraction, and nominal crushed material is added organic extraction by the organic solvent extract for obtaining as extract to be measured
Taking solvent carries out machinery concussion extraction, and the organic solvent extract for obtaining is used as nominal extract；
If the raw material of the nominal trade mark of part to be measured are amorphism material, crushed material to be measured is added into organic extraction
Solvent carries out dissolution precipitation extraction, and the organic solvent extract for obtaining adds nominal crushed material organic as extract to be measured
Extractant carries out dissolution precipitation extraction, and the organic solvent extract for obtaining is used as nominal extract.
3. plastic part quality control method according to claim 2, it is characterised in that if the part to be measured
The raw material of the nominal trade mark are crystalline material, then crushed material to be measured addition organic extraction solvent is carried out into machinery concussion extraction,
Nominal crushed material addition organic extraction solvent is carried out machinery concussion extraction by the organic solvent extract for obtaining as extract to be measured
Take, the organic solvent extract for obtaining is specifically included as nominal extract：
If the raw material of the nominal trade mark of part to be measured are crystalline material,：
By crushed material to be measured with organic extraction solvent soak more than 72 hours, then carry out more than 1 hour machinery concussion extract, obtain
The organic solvent extract for arriving is used as extract to be measured；
By nominal crushed material with organic extraction solvent soak more than 72 hours, then carry out more than 1 hour machinery concussion extract, obtain
The organic solvent extract for arriving is used as nominal extract.
4. plastic part quality control method according to claim 3, it is characterised in that the crystalline material includes：
Polypropylene, polyethylene, polyamide, polyethylene terephthalate, polybutylene terephthalate (PBT), polyformaldehyde and its glass
Or the filling-modified material of miberal powder.
5. plastic part quality control method according to claim 3, it is characterised in that if the part to be measured is nominal
The raw material of the trade mark are crystalline material, then choosing includes that volume ratio is 4:1~1:1 main body extractant and auxiliary extraction agent are made
It is extractant, the main body extractant is methyl alcohol, and the auxiliary extraction agent is in acetone, tetrahydrofuran, ethanol, dichloromethane
One or more.
6. plastic part quality control method according to claim 2, it is characterised in that if the part to be measured
The raw material of the nominal trade mark are amorphism material, then crushed material to be measured addition organic extraction solvent is carried out into dissolution precipitation extraction
Take, it is heavy that the organic solvent extract for obtaining carries out dissolving as extract to be measured, by nominal crushed material addition organic extraction solvent
Form sediment and extract, the organic solvent extract for obtaining is specifically included as nominal extract：
If the raw material of the nominal trade mark of part to be measured are amorphism material,：
Crushed material to be measured is dissolved using organic solvent, precipitating reagent precipitation is fully added after dissolving, stood 10 minutes to 60
After minute, the limpid extract in upper strata is drawn as extract to be measured with suction pipe；
Nominal crushed material is dissolved using organic solvent, precipitating reagent precipitation is fully added after dissolving, stood 10 minutes to 60
After minute, the limpid extract in upper strata is drawn as nominal extract with suction pipe.
7. plastic part quality control method according to claim 6, it is characterised in that the amorphism material bag
Include：Polyvinyl chloride, polystyrene, acrylonitrile-butadiene-styrene copolymer, makrolon, polycarbonate/acrylonitrile-fourth two
The filling of alkene-phenylethene copolymer alloy, esters of acrylic acid rubber-acrylonitrile-styrol copolymer and its glass or miberal powder changes
Property material.
8. plastic part quality control method according to claim 7, it is characterised in that：
If the raw material are the filling-modified material of polyvinyl chloride and its glass or miberal powder, tetrahydrofuran is chosen as described
Organic solvent, chooses acetone or methyl alcohol as the precipitating reagent；
If the raw material are the filling-modified material of polystyrene and its glass or miberal powder, toluene is chosen as described organic
Solvent, chooses ether as the precipitating reagent；
If the raw material are acrylonitrile-butadiene-styrene copolymer, makrolon, polycarbonate/acrylonitrile-fourth two
The filling of alkene-phenylethene copolymer alloy, esters of acrylic acid rubber-acrylonitrile-styrol copolymer and its glass or miberal powder changes
Property material, choose toluene or tetrahydrofuran as the organic solvent, choose methyl alcohol or ethanol as the precipitating reagent.
9. plastic part quality control method according to claim 1, it is characterised in that described to the extract to be measured
FFIR test is carried out, the infrared spectrogram for obtaining will be tested as infrared spectrogram to be measured, to the mark
Claiming extract carries out FFIR test, will test the infrared spectrogram for obtaining as nominal infrared spectrogram,
Specifically include：
After the extract to be measured is filtered and dried, the solid of gained and KBr are blended compressing tablet, the compressing tablet to obtaining enters
Row FFIR is tested, and the infrared spectrogram for obtaining will be tested as infrared spectrogram to be measured, to described nominal
After extract is filtered and dried, the solid of gained and KBr are blended compressing tablet, it is red that the compressing tablet to obtaining carries out Fourier transform
External spectrum is tested, and will test the infrared spectrogram that obtains as nominal infrared spectrogram.
10. plastic part quality control method according to claim 9, it is characterised in that logical to the extract to be measured
Cross the filter membrane that aperture is 0.20~0.45 μm to be filtered, to the nominal extract by filter that aperture is 0.20~0.45 μm
Film is filtered.
The 11. plastic part quality control method according to any one of claim 1~10, it is characterised in that the judgement
Step, specifically includes：
The Similarity matching degree of the infrared spectrogram to be measured and the nominal infrared spectrogram is calculated, if Similarity matching degree is more than
During preset matching degree threshold value, judge that the part to be measured is consistent with the raw material of the nominal trade mark, otherwise judge the part to be measured
Raw material with the nominal trade mark are inconsistent.
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