CN103396618B - A kind of anti-static plastic and preparation method thereof - Google Patents
A kind of anti-static plastic and preparation method thereof Download PDFInfo
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- CN103396618B CN103396618B CN201310292012.1A CN201310292012A CN103396618B CN 103396618 B CN103396618 B CN 103396618B CN 201310292012 A CN201310292012 A CN 201310292012A CN 103396618 B CN103396618 B CN 103396618B
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of anti-static plastic and preparation method thereof, it is made according to mass fraction proportioning primarily of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite and 1-5 mass parts white oil.After each component fully being mixed, add fusion plastification granulation under certain condition in twin screw extruder; By pellet injection moulding under certain condition.The inventive method technique is simple, be convenient to scale operation, and the notched Izod impact strength of product, flexural strength and hardness is high, and good static resistance.
Description
Technical field
The invention belongs to polymeric material field, be specifically related to a kind of anti-static plastic.
Technical background
Plastic material is a kind of material of good performance, because plastics have the advantages such as light weight, not corrosion, good insulating, so will use plastics in a lot of links of electronic product production.Plastics are easily processed, finish size stability and surface luster good, easy application.Painted, be widely used in field of electronics.In recent years in electronic apparatus market, plastics keep status in electronic apparatus market, will improve its performance.The generation of such as electrostatic can bring many troubles, as static discharge, can endanger electronics, makes equipment produce various fault, reduction of service life.Along with the market expansion of electric equipment products, more and more higher to the demand of electrostatic-resistant heat conducting plastic, the such as shell of circuit board material, electrical isolation plate, mobile communication equipment.But general-purpose plastics on the market, its thermal conductivity is low, and working temperature is low, and filler hardness is high, large to equipment attrition, easily produces electrostatic.
The quality of existing anti-static plastic is on the market unstable, and its performance such as flexural strength and hardness is not high, and work-ing life is short, can not meet the requirement of existing market to material; And the good plastics of some effects, it obtains through complicated technique, but product cost is too high.Such as Chinese patent 201210311205.2 discloses a kind of formula of anti-static plastic and has antistatic modified plastic formula disclosed in 201210261587.2, disclosed in this two pieces patent, its performance such as flexural strength and hardness of anti-static plastic is not high, and work-ing life is short.
Summary of the invention
The present invention seeks to, in order to overcome the deficiencies in the prior art, to provide a kind of anti-static plastic and preparation method thereof, this anti-static plastic has good static resistance, also has the characteristics such as notched Izod impact strength, flexural strength and hardness are high simultaneously.
The object of the invention is to be achieved through the following technical solutions: a kind of anti-static plastic, it is made up according to mass fraction proportioning of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite and 1-5 mass parts white oil.
Another technical scheme of the present invention is: a kind of anti-static plastic, it is made up according to mass fraction proportioning of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite, 1-5 mass parts white oil and 5-10 mass parts dibutyl phthalate.
Above-mentioned catalyzer is sodium hydroxide.
Above-mentioned static inhibitor is one or both in static inhibitor S-15, SN, HZ-1 and HZ-14.
The granularity of above-mentioned carbon black is 80-120 order.
Above-mentioned anti-impact modifier is anti-impact modifier CPE.
The particle diameter of above-mentioned graphite is 300-310 μm.
Above-mentioned promotor is vinylcaprolactam.
The preparation method of above-mentioned a kind of anti-static plastic, the preparation process of the method is as follows: after first each component fully being mixed, and to add in twin screw extruder at 170-200 DEG C of temperature and fusion plastification granulation under screw speed 80-90r/min condition; By pellet in barrel temperature 165-195 DEG C temperature, injection moulding under the condition of die temperature 120-125 DEG C, injection pressure 92-97MPa.
Anti-static plastic of the present invention compared with prior art, there is following unusual effect: volume specific resistance reaches 6.01E10-7.08E10 ohmcm, surface resistivity reaches 8.36E12-9.57E12 ohmcm, illustrates that its static resistance will far away higher than the similar plastics performance parameter of prior art; Plastics of the present invention have higher notched Izod impact strength, flexural strength and hardness, there is good antistatic property simultaneously, can be applicable to, on electrical isolation plate, semiconductor devices shell etc., effectively to prevent static focus, thus avoid damaging electronic component.And preparation method's technique provided by the invention is simple, is convenient to scale operation.
Embodiment
embodiment 1
A kind of anti-static plastic, it is made according to mass fraction proportioning primarily of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite and 1-5 mass parts white oil.
Another preferred version of the present invention: a kind of anti-static plastic, it is made according to mass fraction proportioning primarily of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite, 1-5 mass parts white oil and 5-10 mass parts dibutyl phthalate.
Above-mentioned catalyzer is sodium hydroxide.
Above-mentioned static inhibitor is one or both in static inhibitor S-15, SN, HZ-1 and HZ-14.
The granularity of above-mentioned carbon black is 80-120 order.
Above-mentioned anti-impact modifier is anti-impact modifier CPE.
The particle diameter of above-mentioned graphite is 300-310 μm.
Above-mentioned promotor is vinylcaprolactam.
The preparation method of above-mentioned a kind of anti-static plastic, the preparation process of the method is as follows: after first each component fully being mixed, and to add in twin screw extruder at 170-200 DEG C of temperature and fusion plastification granulation under screw speed 80-90r/min condition; By pellet in barrel temperature 165-195 DEG C temperature, injection moulding under the condition of die temperature 120-125 DEG C, injection pressure 92-97MPa.
embodiment 2
A kind of anti-static plastic; it is made according to mass fraction proportioning primarily of following raw materials according: 110 mass parts PVC, 30 mass parts PP, 30 mass parts ABS, 10 mass parts fatty group sulfonate, 5 mass parts tribasic lead sulfates, 4 mass parts sodium hydroxide, 5 mass parts static inhibitor S-15,10 mass parts granularities are 80-120 object carbon black, 16 mass parts methylol aliphatic amides, 10 mass parts anti-impact modifier CPE, 10 mass parts particle diameters are 300-310 μm graphite, 3 mass parts vinylcaprolactam, 5 mass parts dibasic lead phosphites and 1 mass parts white oil.
Prepare the method for above-mentioned anti-static plastic, after the steps include: first each component fully to be mixed, to add in twin screw extruder at 170 DEG C of temperature and fusion plastification granulation under screw speed 80r/min condition; By pellet in barrel temperature 165 DEG C of temperature, die temperature 120 DEG C, injection moulding under the condition of injection pressure 92MPa.
embodiment 3
A kind of anti-static plastic; it is made according to mass fraction proportioning primarily of following raw materials according: 120 mass parts PVC, 32 mass parts PP, 34 mass parts ABS, 13 mass parts fatty group sulfonate, 6 mass parts tribasic lead sulfates, 5 mass parts sodium hydroxide, 7 mass parts static inhibitor SN, 14 mass parts granularities are 80-120 object carbon black, 6 mass parts methylol aliphatic amides, 10 mass parts anti-impact modifier CPE, 10 mass parts particle diameters are 300-310 μm graphite, 3 mass parts vinylcaprolactam, 5 mass parts dibasic lead phosphites and 1 mass parts white oil.
Prepare the method for above-mentioned anti-static plastic, after the steps include: first each component fully to be mixed, to add in twin screw extruder at 180 DEG C of temperature and fusion plastification granulation under screw speed 85r/min condition; By pellet in barrel temperature 175 DEG C of temperature, die temperature 125 DEG C, injection moulding under the condition of injection pressure 97MPa.
embodiment 4
A kind of anti-static plastic; it is made according to mass fraction proportioning primarily of following raw materials according: 130 mass parts PVC, 35 mass parts PP, 30 mass parts ABS, 10 mass parts fatty group sulfonate, 5 mass parts tribasic lead sulfates, 4 mass parts sodium hydroxide, 5 mass parts static inhibitor HZ-1,10 mass parts granularities are 80-120 object carbon black, 6 mass parts methylol aliphatic amides, 10 mass parts anti-impact modifier CPE, 10 mass parts particle diameters are 300-310 μm graphite, 6 mass parts vinylcaprolactam, 5 mass parts dibasic lead phosphites and 1 mass parts white oil.
Prepare the method for above-mentioned anti-static plastic, after the steps include: first each component fully to be mixed, to add in twin screw extruder at 200 DEG C of temperature and fusion plastification granulation under screw speed 90r/min condition; By pellet in barrel temperature 195 DEG C of temperature, die temperature 120 DEG C, injection moulding under the condition of injection pressure 92MPa.
embodiment 5
A kind of anti-static plastic, it is made according to mass fraction proportioning primarily of following raw materials according: 130 mass parts PVC, 32 mass parts PP, 34 mass parts ABS, 13 mass parts fatty group sulfonate, 7 mass parts tribasic lead sulfates, 4 mass parts sodium hydroxide, 8 mass parts static inhibitor HZ-14, 13 mass parts granularities are 80-120 object carbon black, 7 mass parts methylol aliphatic amides, 17 mass parts anti-impact modifier CPE, 11 mass parts particle diameters are the graphite of 300-310 μm, 3 mass parts vinylcaprolactam, 6 mass parts dibasic lead phosphites, 3 mass parts white oils and 7 mass parts dibutyl phthalates.
Prepare the method for above-mentioned anti-static plastic, after the steps include: first each component fully to be mixed, to add in twin screw extruder at 190 DEG C of temperature and fusion plastification granulation under screw speed 80r/min condition; By pellet in barrel temperature 185 DEG C of temperature, die temperature 123 DEG C, injection moulding under the condition of injection pressure 94MPa.
embodiment 6
A kind of anti-static plastic, it is made according to mass fraction proportioning primarily of following raw materials according: 126 mass parts PVC, 33 mass parts PP, 36 mass parts ABS, 12 mass parts fatty group sulfonate, 6 mass parts tribasic lead sulfates, 7 mass parts sodium hydroxide, 3 mass parts static inhibitor S-15, 3 mass parts static inhibitor SN, 15 mass parts granularities are 80-120 object carbon black, 7 mass parts methylol aliphatic amides, 12 mass parts anti-impact modifier CPE, 10-15 mass parts particle diameter is the graphite of 300-310 μm, 4 mass parts vinylcaprolactam, 8 mass parts dibasic lead phosphites, 3 mass parts white oils and 9 mass parts dibutyl phthalates.
Prepare the method for above-mentioned anti-static plastic, after the steps include: first each component fully to be mixed, to add in twin screw extruder at 200 DEG C of temperature and fusion plastification granulation under screw speed 90r/min condition; By pellet in barrel temperature 195 DEG C of temperature, die temperature 125 DEG C, injection moulding under the condition of injection pressure 97MPa.
embodiment 7
A kind of anti-static plastic, it is made according to mass fraction proportioning primarily of following raw materials according: 110 mass parts PVC, 30 mass parts PP, 40 mass parts ABS, 15 mass parts fatty group sulfonate, 8 mass parts tribasic lead sulfates, 4-8 mass parts sodium hydroxide, 5 mass parts static inhibitor HZ-1, 1 mass parts static inhibitor HZ-14, 10 mass parts granularities are 80-120 object carbon black, 8 mass parts methylol aliphatic amides, 17 mass parts anti-impact modifier CPE, 15 mass parts particle diameters are the graphite of 300-310 μm, 4 mass parts vinylcaprolactam, 8 mass parts dibasic lead phosphites, 4 mass parts white oils and 7 mass parts dibutyl phthalates.
Prepare the method for above-mentioned anti-static plastic, after the steps include: first each component fully to be mixed, to add in twin screw extruder at 175 DEG C of temperature and fusion plastification granulation under screw speed 90r/min condition; By pellet in barrel temperature 170 DEG C of temperature, die temperature 125 DEG C, injection moulding under the condition of injection pressure 93MPa.
embodiment 8
A kind of anti-static plastic, it is made according to mass fraction proportioning primarily of following raw materials according: 118 mass parts PVC, 32 mass parts PP, 40 mass parts ABS, 10 mass parts fatty group sulfonate, 5 mass parts tribasic lead sulfates, 8 mass parts sodium hydroxide, 8 mass parts static inhibitor SN, 2 mass parts static inhibitor HZ-14, 10 mass parts granularities are 80-120 object carbon black, 10 mass parts methylol aliphatic amides, 10 mass parts anti-impact modifier CPE, 10 mass parts particle diameters are the graphite of 300-310 μm, 3 mass parts vinylcaprolactam, 10 mass parts dibasic lead phosphites, 5 mass parts white oils and 5 mass parts dibutyl phthalates.
Prepare the method for above-mentioned anti-static plastic, after the steps include: first each component fully to be mixed, to add in twin screw extruder at 200 DEG C of temperature and fusion plastification granulation under screw speed 90r/min condition; By pellet in barrel temperature 195 DEG C of temperature, die temperature 120 DEG C, injection moulding under the condition of injection pressure 97MPa.
embodiment 9
A kind of anti-static plastic, it is made according to mass fraction proportioning primarily of following raw materials according: 130 mass parts PVC, 31 mass parts PP, 32 mass parts ABS, 10 mass parts fatty group sulfonate, 8 mass parts tribasic lead sulfates, 4 mass parts sodium hydroxide, 1 mass parts static inhibitor HZ-11, 4 mass parts static inhibitor S-15, 10 mass parts granularities are 80-120 object carbon black, 8 mass parts methylol aliphatic amides, 18 mass parts anti-impact modifier CPE, 14 mass parts particle diameters are the graphite of 300-310 μm, 3 mass parts vinylcaprolactam, 7 mass parts dibasic lead phosphites, 3 mass parts white oils and 8 mass parts dibutyl phthalates.
Prepare the method for above-mentioned anti-static plastic, after the steps include: first each component fully to be mixed, to add in twin screw extruder at 185 DEG C of temperature and fusion plastification granulation under screw speed 85r/min condition; By pellet in barrel temperature 180 DEG C of temperature, die temperature 125 DEG C, injection moulding under the condition of injection pressure 94MPa.
embodiment 10
Performance test: the plastics in above-mentioned 2-9 embodiment are made standard batten and carries out performance test according to the similar plastic standard of country, its comparative example 1 selects the antistatic material of PC (extrusion grade) bought from Dongguan City Shang Yuan conductive plastics company limited, and performance is as shown in table 1:
Claims (9)
1. an anti-static plastic, it is characterized in that it is made up according to mass fraction proportioning of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite and 1-5 mass parts white oil.
2. an anti-static plastic, it is characterized in that it is made up according to mass fraction proportioning of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite, 1-5 mass parts white oil and 5-10 mass parts dibutyl phthalate.
3. a kind of anti-static plastic according to claim 1, is characterized in that described catalyzer is sodium hydroxide.
4. a kind of anti-static plastic according to claim 1, is characterized in that described static inhibitor is one or both in static inhibitor S-15, SN, HZ-1 and HZ-14.
5. a kind of anti-static plastic according to claim 1, is characterized in that the granularity of described carbon black is 80-120 order.
6. a kind of anti-static plastic according to claim 1, is characterized in that described anti-impact modifier is anti-impact modifier CPE.
7. a kind of anti-static plastic according to claim 1, is characterized in that the particle diameter of described graphite is 300-310 μm.
8. a kind of anti-static plastic according to claim 1, is characterized in that described promotor is vinylcaprolactam.
9. the preparation method of a kind of anti-static plastic according to any one of claim 1-8, it is characterized in that the preparation process of the method is as follows: after first each component fully being mixed, to add in twin screw extruder at 170-200 DEG C of temperature and fusion plastification granulation under screw speed 80-90r/min condition; By pellet in barrel temperature 165-195 DEG C temperature, injection moulding under the condition of die temperature 120-125 DEG C, injection pressure 92-97MPa.
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| CN104672753A (en) * | 2015-02-04 | 2015-06-03 | 苏州康华净化系统工程有限公司 | Conductive ABS material and preparation method thereof |
| CN105038100A (en) * | 2015-06-26 | 2015-11-11 | 苏州荣昌复合材料有限公司 | Thermal and electric conducting modified plastic composition |
| CN105038239A (en) * | 2015-06-30 | 2015-11-11 | 苏州洋杰电子有限公司 | Preparation method of weatherable and antistatic composite material |
| CN105602183A (en) * | 2015-12-30 | 2016-05-25 | 苏州乔布注塑工业有限公司 | Stable compound injection molding material |
| CN105647013A (en) * | 2016-03-09 | 2016-06-08 | 苏州莱特复合材料有限公司 | PP and PVC alloy and preparation method thereof |
| CN106751127A (en) * | 2016-11-10 | 2017-05-31 | 南宁市钜丰塑业有限公司 | A kind of conductive plastics bottle and preparation method thereof |
| CN106750921A (en) * | 2016-12-12 | 2017-05-31 | 郑州艾莫弗信息技术有限公司 | A kind of corrosion-resistant plastic mold materials |
| CN113146927B (en) * | 2020-11-23 | 2023-05-09 | 太仓丹妮尔模塑汽配有限公司 | Pressurized quick injection molding process for antistatic household appliance structural part |
| CN113024966A (en) * | 2021-01-28 | 2021-06-25 | 宁波贝拓电气有限公司 | Shell for photoelectric switch and preparation method thereof |
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Denomination of invention: An anti-static plastic and its preparation method Effective date of registration: 20230630 Granted publication date: 20151125 Pledgee: China Co. truction Bank Corp Dingyuan branch Pledgor: ANHUI ANYUAN PLASTICS Inc. Registration number: Y2023980047007 |