CN108943541A - A kind of iron clothes hanger leaching modeling processing technology - Google Patents
A kind of iron clothes hanger leaching modeling processing technology Download PDFInfo
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- CN108943541A CN108943541A CN201810643078.3A CN201810643078A CN108943541A CN 108943541 A CN108943541 A CN 108943541A CN 201810643078 A CN201810643078 A CN 201810643078A CN 108943541 A CN108943541 A CN 108943541A
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- clothes hanger
- leaching modeling
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- iron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention discloses a kind of iron clothes hanger leaching modeling processing technologys, are related to clothes hanger technical field, comprising the following steps: (1) iron wire is processed into iron clothes hanger；(2) by the iron clothes hanger in step (1) first use mass fraction for 50% alcohol solution dipping 30-40min, then it filters, then mass fraction is used to impregnate 30-40min for 5% hydrochloric acid solution, then filter, it is cleaned using deionized water to neutrality, drying to constant weight；(3) coupling agent solution impregnation；(4) the addition leaching modeling liquid into plastic soaking device；(5) leaching modeling liquid is immersed；(6) solidify；(7) cooling package；Iron clothes hanger after present invention process soaks modeling processing, surface coats the plastic layer of one layer of uniform bright, riotous with colour, with the beautiful gloss as porcelain.
Description
Technical field
The invention belongs to new material technology fields, and in particular to a kind of iron clothes hanger leaching modeling processing technology.
Background technique
The plastic-soaked clothes rack that tradition uses is varied, be largely processing technology complexity PVC leaching modeling liquid be with polyvinyl chloride
(pvc) multiple additives are mixed, are refined through multiple working procedure.
Existing clothes hanger impregnation is simple, and the clothes hanger quality after leaching modeling is general, easy to aging, is easy to fall off, leaching modeling solidification
The adhesive force between coating plastic and clothes hanger afterwards is lower, and the plastic-soaked clothes rack produced using PVC leaching modeling liquid, riotous with colour,
With the beautiful gloss as porcelain, adhesion is strong, wear-resisting, resistance to draw, is heat-resisting, high insulativity, good hand touch, long service life, but
During solarization, leaching modeling PVC clothes hanger surface PVC can gradually aging, cracking, fall off, can not continue protect clothes hanger.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of iron clothes hanger leaching modeling processing technology is provided.
The present invention is achieved by the following technical solutions:
A kind of iron clothes hanger leaching modeling processing technology, comprising the following steps:
(1) iron wire is processed into iron clothes hanger；
(2) first use mass fraction for 50% alcohol solution dipping 30-40min the iron clothes hanger in step (1), then mistake
Filter, then mass fraction is used to impregnate 30-40min for 5% hydrochloric acid solution, it then filters, is cleaned using deionized water to neutrality,
Drying to constant weight；
It (3) will iron clothes hanger uses coupling agent solution impregnation by step (2) treated；
(4) the addition leaching modeling liquid into plastic soaking device；
(5) by step (3), treated that iron clothes hanger immerses leaching modeling liquid；
(6) it will be enhanced rapidly by the iron clothes hanger of step (5) leaching modeling 15-18s, go in solidification holding furnace and solidified
Processing；
(7) by offline encapsulation after the leaching ironshaper clothes stand cooling by curing process.
Further, the coupling agent is the organo silane coupling agent solution that mass fraction is 15%, the coupling agent solution
The impregnation time is 1 hour, and dipping temperature is 50 DEG C.
Further, the leaching modeling liquid is made of following component by weight: polyvinyl chloride resin 80-96, plasticizer 5-8, three
Poly cyanamid 1-3, sulfonic acid modified alkyd resin 10-12, inorganic nano-filler 6-10, defoaming agent 0.1-0.4, color masterbatch 0.1-0.3；Institute
It states polyvinyl chloride resin and sulfonic acid modified alkyd resin weight part ratio is 8:1.
Further, the sulfonic acid modified alkyd resin the preparation method comprises the following steps:
(1) 0.3-0.5MPa pressure, 60-65 DEG C of temperature reaction condition under, maleic anhydride and saturation high-carbon primary amine are carried out
Mixing reacts 2-3 hours under agitation, obtains reaction intermediate；
(2) 0.12-0.15MPa pressure, 80-90 DEG C of temperature reaction condition under, by the intermediate and sulfurous acid of above-mentioned preparation
Salt is mixed, and is reacted 2-3 hours under agitation, is obtained sulfonic acid modified agent；
(3) alkyd resin is preheated to 85 DEG C, 30min is stirred with 1200r/min revolving speed, then adds it into alkyd resin
The sulfonic acid modified agent obtained above of quality 10% continues to stir 10min, is then added in reaction kettle, vacuumizes, be heated to
102 DEG C, react 3-4 hours, then cooled to room temperature to get.
Further, the maleic anhydride and saturation high-carbon primary amine molar ratio are 1:3.5.
Further, the saturation high-carbon primary amine is octadecylamine.
Further, the intermediate and sulphite molar ratio are 1:0.8.
Further, the sulphite be sodium sulfite, it is any in potassium sulfite.
Further, the vacuum degree vacuumized is 0.05Pa.
Further, the plasticizer is double oleins, and the defoaming agent is organic silicon defoamer, described inorganic to receive
Rice filler is nano aluminium oxide.
The present invention has the advantage that the iron clothes hanger after present invention process soaks modeling processing, table compared with prior art
Bread covers the plastic layer of one layer of uniform bright, riotous with colour, with the beautiful gloss as porcelain, strong, wear-resisting, the resistance to drawing of adhesion,
Heat-resisting, high insulativity, good hand touch, long service life, while there is good ageing-resistant performance, by using prepared by the present invention
Leaching modeling liquid coordinated impregnation of the present invention, can preferably improve the adhesive force between coating plastic layer and iron clothes hanger,
It can effectively improve service life, the leaching modeling liquid that the present invention uses passes through the effect of sulfonic acid modified alkyd resin, moulds liquid in leaching
Polyvinyl chloride resin system in it is evenly dispersed, and mutually effectively combine closely between polyvinyl chloride resin molecule, form organic whole, it is multiple
Stable three-dimensional network cross-linked network is formed between condensation material molecule, can effectively be played the role of crosslinking points, significantly be mentioned
The high heat resistance and thermal decomposition temperature of product, meanwhile, the bond energy between composite material molecule is effectively raised, it can
Higher external world effect is enough resisted, improves ageing-resistant performance to reach.
Specific embodiment
Embodiment 1
A kind of iron clothes hanger leaching modeling processing technology, comprising the following steps:
(1) iron wire is processed into iron clothes hanger；
(2) it first uses mass fraction for 50% alcohol solution dipping 30min the iron clothes hanger in step (1), then filters,
It uses mass fraction to impregnate 30min for 5% hydrochloric acid solution again, then filters, cleaned using deionized water to neutrality, be dried to
Constant weight；
It (3) will iron clothes hanger uses coupling agent solution impregnation by step (2) treated；
(4) the addition leaching modeling liquid into plastic soaking device；
(5) by step (3), treated that iron clothes hanger immerses leaching modeling liquid；
(6) it will be enhanced rapidly by the iron clothes hanger of step (5) leaching modeling 15s, go in solidification holding furnace and carry out at solidification
Reason；
(7) by offline encapsulation after the leaching ironshaper clothes stand cooling by curing process.
Further, the coupling agent is the organo silane coupling agent solution that mass fraction is 15%, the coupling agent solution
The impregnation time is 1 hour, and dipping temperature is 50 DEG C.
Further, the leaching modeling liquid is made of following component by weight: polyvinyl chloride resin 80, plasticizer 5, melamine
Amine 1, sulfonic acid modified alkyd resin 10, inorganic nano-filler 6, defoaming agent 0.1, color masterbatch 0.1；The polyvinyl chloride resin and sulfonic acid modified
Alkyd resin weight part ratio is 8:1.
Further, the sulfonic acid modified alkyd resin the preparation method comprises the following steps:
(1) 0.3MPa pressure, 60 DEG C of temperature reaction condition under, maleic anhydride is mixed with saturation high-carbon primary amine,
It is reacted 2 hours under stirring condition, obtains reaction intermediate；
(2) 0.12MPa pressure, 80 DEG C of temperature reaction condition under, the intermediate of above-mentioned preparation is mixed with sulphite
It closes, reacts 2 hours under agitation, obtain sulfonic acid modified agent；
(3) alkyd resin is preheated to 85 DEG C, 30min is stirred with 1200r/min revolving speed, then adds it into alkyd resin
The sulfonic acid modified agent obtained above of quality 10% continues to stir 10min, is then added in reaction kettle, vacuumizes, be heated to
102 DEG C, react 3 hours, then cooled to room temperature to get.
Further, the maleic anhydride and saturation high-carbon primary amine molar ratio are 1:3.5.
Further, the saturation high-carbon primary amine is octadecylamine.
Further, the intermediate and sulphite molar ratio are 1:0.8.
Further, the sulphite be sodium sulfite, it is any in potassium sulfite.
Further, the vacuum degree vacuumized is 0.05Pa.
Further, the plasticizer is double oleins, and the defoaming agent is organic silicon defoamer, described inorganic to receive
Rice filler is nano aluminium oxide.
Embodiment 2
A kind of iron clothes hanger leaching modeling processing technology, comprising the following steps:
(1) iron wire is processed into iron clothes hanger；
(2) it first uses mass fraction for 50% alcohol solution dipping 40min the iron clothes hanger in step (1), then filters,
It uses mass fraction to impregnate 40min for 5% hydrochloric acid solution again, then filters, cleaned using deionized water to neutrality, be dried to
Constant weight；
It (3) will iron clothes hanger uses coupling agent solution impregnation by step (2) treated；
(4) the addition leaching modeling liquid into plastic soaking device；
(5) by step (3), treated that iron clothes hanger immerses leaching modeling liquid；
(6) it will be enhanced rapidly by the iron clothes hanger of step (5) leaching modeling 18s, go in solidification holding furnace and carry out at solidification
Reason；
(7) by offline encapsulation after the leaching ironshaper clothes stand cooling by curing process.
Further, the coupling agent is the organo silane coupling agent solution that mass fraction is 15%, the coupling agent solution
The impregnation time is 1 hour, and dipping temperature is 50 DEG C.
Further, the leaching modeling liquid is made of following component by weight: polyvinyl chloride resin 96, plasticizer 8, melamine
Amine 3, sulfonic acid modified alkyd resin 12, inorganic nano-filler 10, defoaming agent 0.4, color masterbatch 0.3；The polyvinyl chloride resin and sulfonic acid modified
Alkyd resin weight part ratio is 8:1.
Further, the sulfonic acid modified alkyd resin the preparation method comprises the following steps:
(1) 0.5MPa pressure, 65 DEG C of temperature reaction condition under, maleic anhydride is mixed with saturation high-carbon primary amine,
It is reacted 3 hours under stirring condition, obtains reaction intermediate；
(2) 0.15MPa pressure, 90 DEG C of temperature reaction condition under, the intermediate of above-mentioned preparation is mixed with sulphite
It closes, reacts 3 hours under agitation, obtain sulfonic acid modified agent；
(3) alkyd resin is preheated to 85 DEG C, 30min is stirred with 1200r/min revolving speed, then adds it into alkyd resin
The sulfonic acid modified agent obtained above of quality 10% continues to stir 10min, is then added in reaction kettle, vacuumizes, be heated to
102 DEG C, react 4 hours, then cooled to room temperature to get.
Further, the maleic anhydride and saturation high-carbon primary amine molar ratio are 1:3.5.
Further, the saturation high-carbon primary amine is octadecylamine.
Further, the intermediate and sulphite molar ratio are 1:0.8.
Further, the sulphite be sodium sulfite, it is any in potassium sulfite.
Further, the vacuum degree vacuumized is 0.05Pa.
Further, the plasticizer is double oleins, and the defoaming agent is organic silicon defoamer, described inorganic to receive
Rice filler is nano aluminium oxide.
Embodiment 3
A kind of iron clothes hanger leaching modeling processing technology, comprising the following steps:
(1) iron wire is processed into iron clothes hanger；
(2) it first uses mass fraction for 50% alcohol solution dipping 35min the iron clothes hanger in step (1), then filters,
It uses mass fraction to impregnate 35min for 5% hydrochloric acid solution again, then filters, cleaned using deionized water to neutrality, be dried to
Constant weight；
It (3) will iron clothes hanger uses coupling agent solution impregnation by step (2) treated；
(4) the addition leaching modeling liquid into plastic soaking device；
(5) by step (3), treated that iron clothes hanger immerses leaching modeling liquid；
(6) it will be enhanced rapidly by the iron clothes hanger of step (5) leaching modeling 16s, go in solidification holding furnace and carry out at solidification
Reason；
(7) by offline encapsulation after the leaching ironshaper clothes stand cooling by curing process.
Further, the coupling agent is the organo silane coupling agent solution that mass fraction is 15%, the coupling agent solution
The impregnation time is 1 hour, and dipping temperature is 50 DEG C.
Further, the leaching modeling liquid is made of following component by weight: polyvinyl chloride resin 88, plasticizer 6, melamine
Amine 2, sulfonic acid modified alkyd resin 11, inorganic nano-filler 8, defoaming agent 0.3, color masterbatch 0.2；The polyvinyl chloride resin and sulfonic acid modified
Alkyd resin weight part ratio is 8:1.
Further, the sulfonic acid modified alkyd resin the preparation method comprises the following steps:
(1) 0.4MPa pressure, 62 DEG C of temperature reaction condition under, maleic anhydride is mixed with saturation high-carbon primary amine,
It is reacted 2-3 hours under stirring condition, obtains reaction intermediate；
(2) 0.13MPa pressure, 85 DEG C of temperature reaction condition under, the intermediate of above-mentioned preparation is mixed with sulphite
It closes, reacts 2.5 hours under agitation, obtain sulfonic acid modified agent；
(3) alkyd resin is preheated to 85 DEG C, 30min is stirred with 1200r/min revolving speed, then adds it into alkyd resin
The sulfonic acid modified agent obtained above of quality 10% continues to stir 10min, is then added in reaction kettle, vacuumizes, be heated to
102 DEG C, react 3.5 hours, then cooled to room temperature to get.
Further, the maleic anhydride and saturation high-carbon primary amine molar ratio are 1:3.5.
Further, the saturation high-carbon primary amine is octadecylamine.
Further, the intermediate and sulphite molar ratio are 1:0.8.
Further, the sulphite be sodium sulfite, it is any in potassium sulfite.
Further, the vacuum degree vacuumized is 0.05Pa.
Further, the plasticizer is double oleins, and the defoaming agent is organic silicon defoamer, described inorganic to receive
Rice filler is nano aluminium oxide.
Comparative example 1: it is only that with the difference of embodiment 1 and does not add sulfonic acid modified alkyd resin.
Comparative example 2: it is distinguished with embodiment 1 and is only that the alkyd resin that sulfonic acid modified alkyd resin is replaced with to equivalent.
Comparative example 3: it distinguishes and is only that by application number with embodiment 1: application number: the 201410073470.0 method alcohol recorded
Acid resin replaces sulfonic acid modified alkyd resin of the invention.
Test
Sample uses length for 20cm, and diameter is the iron wire of 1mm, and embodiment and comparative example leaching modeling liquid is respectively adopted in sample iron wire
Modeling processing is soaked, the conditions homogeneous phases such as leaching modeling time, leaching modeling temperature, drying time, drying temperature are same, obtain package same thickness
Then the iron wire of plastics mutually detaches the plastics that each sample iron wire wraps up with sample iron wire, the plastics after detaching to each group
Carry out ageing-resistant performance detection:
According to GB/T164222-1999 standard, by above-mentioned each group sample in the sample rack of flashing light anti-aging test case, xenon lamp is carried out
Light source exposure test, ageing time are 25 days, then take out and are tested, experimental condition: 6.5KW water-cooled xenon lamp, work temperature
Degree is 55 ± 2 DEG C；Blackboard temperature is 68 ± 2 DEG C；Operating room's relative humidity is 55 ± 2%；Rainfall cycle 18min/102min(drop
The rain time of rain time/not)；590 ± 10W/m2 of radiation of light source intensity:
Table 1
As can be seen from Table 1, the coating plastic being formed by curing after present invention process soaks modeling liquid leaching modeling has good resistance to old
Change performance, it is evenly dispersed in polyvinyl chloride resin system by the effect of sulfonic acid modified alkyd resin, and with polyvinyl chloride resin molecule it
Between mutually effectively combine closely, form organic whole, form stable three-dimensional network cross-linked network, energy between composite material molecule
It is enough effectively to play the role of crosslinking points, the heat resistance and thermal decomposition temperature of product are significantly improved, meanwhile, effectively mention
Bond energy between high composite material molecule, can resist higher external world effect, thus reach improve it is ageing-resistant
Performance.
Claims (10)
1. a kind of iron clothes hanger leaching modeling processing technology, which comprises the following steps:
(1) iron wire is processed into iron clothes hanger；
(2) first use mass fraction for 50% alcohol solution dipping 30-40min the iron clothes hanger in step (1), then mistake
Filter, then mass fraction is used to impregnate 30-40min for 5% hydrochloric acid solution, it then filters, is cleaned using deionized water to neutrality,
Drying to constant weight；
It (3) will iron clothes hanger uses coupling agent solution impregnation by step (2) treated；
(4) the addition leaching modeling liquid into plastic soaking device；
(5) by step (3), treated that iron clothes hanger immerses leaching modeling liquid；
(6) it will be enhanced rapidly by the iron clothes hanger of step (5) leaching modeling 15-18s, go in solidification holding furnace and solidified
Processing；
(7) by offline encapsulation after the leaching ironshaper clothes stand cooling by curing process.
2. a kind of iron clothes hanger leaching modeling processing technology according to claim 1, which is characterized in that the coupling agent is quality
The organo silane coupling agent solution that score is 15%, the coupling agent solution impregnation time are 1 hour, dipping temperature 50
℃。
3. a kind of iron clothes hanger leaching modeling processing technology according to claim 1, which is characterized in that the leaching modeling liquid is by weight
Part meter be made of following component: polyvinyl chloride resin 80-96, plasticizer 5-8, melamine 1-3, sulfonic acid modified alkyd resin 10-12,
Inorganic nano-filler 6-10, defoaming agent 0.1-0.4, color masterbatch 0.1-0.3；The polyvinyl chloride resin and sulfonic acid modified alkyd resin weight
Part is than being 8:1.
4. a kind of iron clothes hanger leaching modeling processing technology according to claim 3, which is characterized in that the sulfonic acid modified alkyd
Process for preparing resins are as follows:
(1) 0.3-0.5MPa pressure, 60-65 DEG C of temperature reaction condition under, maleic anhydride and saturation high-carbon primary amine are carried out
Mixing reacts 2-3 hours under agitation, obtains reaction intermediate；
(2) 0.12-0.15MPa pressure, 80-90 DEG C of temperature reaction condition under, by the intermediate and sulfurous acid of above-mentioned preparation
Salt is mixed, and is reacted 2-3 hours under agitation, is obtained sulfonic acid modified agent；
(3) alkyd resin is preheated to 85 DEG C, 30min is stirred with 1200r/min revolving speed, then adds it into alkyd resin
The sulfonic acid modified agent obtained above of quality 10% continues to stir 10min, is then added in reaction kettle, vacuumizes, be heated to
102 DEG C, react 3-4 hours, then cooled to room temperature to get.
5. a kind of iron clothes hanger leaching modeling processing technology according to claim 4, which is characterized in that the maleic anhydride and full
It is 1:3.5 with high-carbon primary amine molar ratio.
6. a kind of iron clothes hanger leaching modeling processing technology according to claim 3 or 4, which is characterized in that the saturation high-carbon
Primary amine is octadecylamine.
7. a kind of iron clothes hanger leaching modeling processing technology according to claim 4, which is characterized in that the intermediate and sulfurous
Hydrochlorate molar ratio is 1:0.8.
8. a kind of iron clothes hanger leaching modeling processing technology according to claim 4 or 7, which is characterized in that the sulphite
It is any in sodium sulfite, potassium sulfite.
9. a kind of iron clothes hanger leaching modeling processing technology according to claim 4, which is characterized in that the vacuum vacuumized
Degree is 0.05Pa.
10. a kind of iron clothes hanger leaching modeling processing technology according to claim 3, which is characterized in that the plasticizer is double
Olein, the defoaming agent are organic silicon defoamer, and the inorganic nano-filler is nano aluminium oxide.
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| CN201810643078.3A CN108943541A (en) | 2018-06-21 | 2018-06-21 | A kind of iron clothes hanger leaching modeling processing technology |
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| CN201810643078.3A CN108943541A (en) | 2018-06-21 | 2018-06-21 | A kind of iron clothes hanger leaching modeling processing technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113683844A (en) * | 2021-08-26 | 2021-11-23 | 太原理工大学 | High-toughness polyvinyl chloride steel skeleton plastic dipping liquid and plastic dipping method thereof |
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| CN113683844A (en) * | 2021-08-26 | 2021-11-23 | 太原理工大学 | High-toughness polyvinyl chloride steel skeleton plastic dipping liquid and plastic dipping method thereof |
| CN113683844B (en) * | 2021-08-26 | 2022-11-29 | 太原理工大学 | High-toughness polyvinyl chloride steel skeleton plastic dipping liquid and plastic dipping method thereof |
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Application publication date: 20181207 |
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