CN112143194A - Modified regenerated PC/ABS alloy reclaimed material and preparation method thereof - Google Patents
Modified regenerated PC/ABS alloy reclaimed material and preparation method thereof Download PDFInfo
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- CN112143194A CN112143194A CN201910583596.5A CN201910583596A CN112143194A CN 112143194 A CN112143194 A CN 112143194A CN 201910583596 A CN201910583596 A CN 201910583596A CN 112143194 A CN112143194 A CN 112143194A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- 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
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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
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Abstract
The invention discloses a modified regenerated PC/ABS alloy reclaimed material which is prepared from the following components in parts by weight: 40-75 parts of PC/ABS alloy reclaimed materials, 10-30 parts of compound heat-resistant agent, 10-25 parts of toughening agent, 0.2-0.5 part of antioxidant and 0.1-0.5 part of lubricant; the compound heat-resistant agent is a nano silicon dioxide doped terpolymer, and the terpolymer is a styrene-N-phenylmaleimide-maleic anhydride terpolymer. The invention utilizes the nanometer silicon dioxide doped heat-resistant agent to improve the heat resistance and the rigidity and the toughness of the PC/ABS alloy reclaimed material, thereby regenerating and recycling the reclaimed PC/ABS alloy reclaimed material of the household appliances, reducing the cost and reducing the pollution of waste plastics to the environment.
Description
Technical Field
The invention belongs to the technical field of polymer composite materials, and particularly relates to a modified regenerated PC/ABS alloy reclaimed material and a preparation method thereof.
Background
The highlight shell of the household appliance in the current market, such as a television outer frame, a computer shell, a meter shell, an instrument shell and the like, is basically formed by injection molding of PC + ABS alloy, and the material has the excellent heat resistance, dimensional stability and impact resistance of PC resin and also has the excellent easy processing characteristic of ABS resin.
With the updating and upgrading of new and old electric appliance products, waste plastic products in the fields of communication equipment, household appliances, automobiles, computers, peripheral parts and the like are scrapped. The recycling task of the reclaimed PC/ABS alloy is heavy. However, since the ABS is a non-crystalline material, it is synthesized from three chemical monomers of acrylonitrile, butadiene and styrene. Whereas the notch sensitivity of the PC material is strong. Therefore, the mechanical property and the heat resistance of the recovered PC/ABS alloy material are greatly reduced, and the recovered PC/ABS alloy material cannot be directly injected for recycling. Therefore, the recovered PC/ABS alloy material needs to be modified again, so that the performance of the recovered PC/ABS alloy material is improved, and the recovered PC/ABS alloy material can be continuously put into the market for reuse.
Disclosure of Invention
The invention aims to provide a modified regenerated PC/ABS alloy reclaimed material and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
a modified regenerated PC/ABS alloy reclaimed material is prepared from the following components in parts by weight: 40-75 parts of PC/ABS alloy reclaimed materials, 10-30 parts of compound heat-resistant agent, 10-25 parts of toughening agent, 0.2-0.5 part of antioxidant and 0.1-0.5 part of lubricant; the compound heat-resistant agent is a nano silicon dioxide doped terpolymer, and the terpolymer is a styrene-N-phenylmaleimide-maleic anhydride terpolymer.
Further, the recovered PC/ABS alloy material is crushed into crushed material with particle size smaller than 10mm after being cleaned and air-dried, and then the crushed material is circularly dried for 2-8h at the temperature of 100-120 ℃ to ensure that the water content is lower than 0.25 wt%.
The toughening agent is high-rubber-powder ABS, wherein the mass fraction of rubber in the high-rubber-powder ABS is 50-70%.
The preparation method of the compound heat-resistant agent comprises the following steps: premixing styrene-N-phenylmaleimide-maleic anhydride terpolymer and silane coupling agent in a high-speed mixer at 80-90 ℃ for 1-3 min; then adding nano silicon dioxide and continuously blending for 1-3min to obtain the compound heat-resistant agent.
The mass ratio of the nano silicon dioxide, the styrene-N-phenylmaleimide-maleic anhydride terpolymer to the silane coupling agent is 1: (3-6): 0.3.
the antioxidant is at least one of antioxidant 1076, antioxidant DSTDP and antioxidant 168.
The lubricant is at least one of silane polymer, liquid paraffin, solid paraffin, fatty acid salt, fatty acid amide, calcium stearate, zinc stearate, stearic acid amide, methylene bis-stearic acid amide and N, N-ethylene bis-stearic acid amide.
The invention also aims to provide a preparation method of the modified recycled PC/ABS alloy material, which comprises the steps of adding the recycled PC/ABS alloy material, the compound heat-resistant agent, the toughening agent, the antioxidant and the lubricant into a high-speed mixer according to parts by weight, and uniformly mixing; and then, melting and extruding the uniformly mixed materials by an extruder, and granulating to prepare the modified regenerated PC/ABS alloy reclaimed material.
In a further scheme, the temperature of the extruder from a feed opening to a die opening is 200-260 ℃; the rotating speed of the extruder is 180-400 rpm; the vacuum degree is-0.07 to-0.03 MPa.
The PC/ABS alloy reclaimed material of the invention is the outer frame of a television, the shell of a computer, the shell of an ammeter, the shell of an instrument, the shell of a fax machine, the shell of a copier and the like.
According to the invention, the nano silicon dioxide doped styrene-N-phenylmaleimide-maleic anhydride terpolymer is added to serve as a compound heat-resistant agent, and the styrene-N-phenylmaleimide-maleic anhydride terpolymer can improve the glass transition temperature of the PC/ABS alloy material, namely the heat resistance of the material is greatly improved. In addition, the nano silicon dioxide doped in the compound heat-resistant agent has better dispersibility in a system, and the three-dimensional network structure and the large specific surface area of the nano silicon dioxide show great activity, so that the network structure can be formed in the PC/ABS alloy material, the strength of the alloy material is increased, and the thermal deformation temperature is increased. Meanwhile, the nano silicon dioxide has conventional SiO2The regenerated PC/ABS alloy material has special optical performance, extremely strong ultraviolet absorption and infrared reflection characteristics, and can coordinate and improve the heat resistance and light resistance of the regenerated PC/ABS alloy material.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
In the following embodiments, the recovered PC/ABS alloy material is selected from the group consisting of television outer frame, computer housing, ammeter housing, meter housing, facsimile housing, and copier housing, and is cleaned, air dried, and then crushed into crushed material with particle size less than 10mm, and the crushed material is circularly dried at 100 ℃ and 120 ℃ for 2-8h until the water content is less than 0.25%.
The toughening agent ABS high-adhesive powder is AP6000 (Thailand petrochemical), HR-181 (Korean Jinhuu);
the heat-resistant agent compound is self-made, namely, styrene-N-phenylmaleimide-maleic anhydride terpolymer and silane coupling agent are premixed in a high-speed mixer at 85 ℃ for 2 min; then adding nano silicon dioxide and continuously blending for 2min to obtain the compound heat-resistant agent.
Wherein the nano silicon dioxide is CW-SiO2-001 (Shanghai Chaowei), the styrene-N-phenylmaleimide-maleic anhydride terpolymer is MS-NB and silane coupling agent KH560 of American electrical chemistry;
the antioxidant is at least one of 1076, 168, DSTDP;
the lubricant is at least one of calcium stearate, zinc stearate, lead stearate, barium stearate and pentaerythritol stearate.
For comparison, this example provides only calcium stearate, and other zinc stearate, lead stearate, barium stearate, pentaerythritol stearate, etc. can achieve similar effects.
The recovered PC/ABS alloy material is cleaned, air dried, crushed into 10mm size material, and circular dried at 110 deg.c for 6 hr to reach water content lower than 0.25 wt%.
Example 1
Respectively weighing 40 parts of PC/ABS alloy reclaimed materials, 30 parts of compound heat-resistant agent (nano silicon dioxide: styrene-N-phenylmaleimide-maleic anhydride terpolymer: KH 570: 1:3:0.5), 25 parts of toughening agent ABS high-rubber powder AP6000, 0.2 part of antioxidant 1076 and 0.4 part of lubricant calcium stearate according to the weight ratio, adding the materials into a high-speed mixer, uniformly mixing, adding the uniformly mixed mixture into an extruder, cooling by water and then granulating. Wherein the processing temperature of the extruder is 200 ℃, 220 ℃, 230 ℃, 240 ℃, 250 ℃ and 250 ℃ from the feed opening to the die orifice in sequence, the rotating speed of the extruder is 180rpm, and the vacuum degree is-0.03 MPa.
Example 2
Respectively weighing 75 parts of PC/ABS alloy reclaimed materials, 10 parts of compound heat-resistant agent (nano silicon dioxide: styrene-N-phenylmaleimide-maleic anhydride terpolymer: KH 570: 1:6:0.5), 10 parts of toughening agent ABS high rubber powder HR-181, 0.2 part of antioxidant 168, 0.3 part of antioxidant DSTDP and 0.1 part of lubricant calcium stearate according to the weight ratio, adding the materials into a high-speed mixer, uniformly mixing, adding the uniformly mixed mixture into an extruder, cooling by water, and granulating. Wherein the processing temperature of the extruder is 200 ℃, 220 ℃, 230 ℃, 240 ℃, 250 ℃ and 250 ℃ from the feed opening to the die orifice in sequence, the rotating speed of the extruder is 200rpm, and the vacuum degree is-0.05 MPa.
Example 3
58 parts of PC/ABS alloy reclaimed materials, 20 parts of compound heat-resistant agent (nano-silica: styrene-N-phenylmaleimide-maleic anhydride terpolymer: KH 570: 1:5:0.5), 17 parts of toughening agent ABS high-rubber powder AP6000, 0.2 part of antioxidant 1076, 0.3 part of antioxidant DSTDP and 0.1 part of lubricant pentaerythritol stearate are weighed according to the weight ratio respectively, the materials are added into a high-speed mixer to be uniformly mixed, then the uniformly mixed mixture is added into an extruder, and the materials are cooled and cut into granules. Wherein the processing temperature of the extruder is 200 ℃, 220 ℃, 230 ℃, 240 ℃, 250 ℃ and 250 ℃ from the feed opening to the die orifice in sequence, the rotating speed of the extruder is 350rpm, and the vacuum degree is-0.06 MPa.
Comparative example 1
Respectively weighing 58 parts of PC/ABS alloy reclaimed materials, 20 parts of styrene-N-phenylmaleimide-maleic anhydride terpolymer, 17 parts of toughening agent ABS high-rubber powder AP6000, 0.2 part of antioxidant 1076, 0.3 part of antioxidant DSTDP and 0.1 part of lubricant pentaerythritol stearate according to the weight ratio, adding the materials into a high-speed mixer, uniformly mixing, adding the uniformly mixed mixture into an extruder, and granulating after water cooling. Wherein the processing temperature of the extruder is 200 ℃, 220 ℃, 230 ℃, 240 ℃, 250 ℃ and 250 ℃ from the feed opening to the die orifice in sequence, the rotating speed of the extruder is 350rpm, and the vacuum degree is-0.06 MPa.
Comparative example 2
Respectively weighing 78 parts of PC/ABS alloy reclaimed materials, 17 parts of toughening agent ABS high-rubber powder AP6000, 0.2 part of antioxidant 1076, 0.3 part of antioxidant DSTDP and 0.1 part of lubricant pentaerythritol stearate according to the weight ratio, adding the materials into a high-speed mixer, uniformly mixing, adding the uniformly mixed mixture into an extruder, and granulating after water cooling. Wherein the processing temperature of the extruder is 200 ℃, 220 ℃, 230 ℃, 240 ℃, 250 ℃ and 250 ℃ from the feed opening to the die orifice in sequence, the rotating speed of the extruder is 350rpm, and the vacuum degree is-0.06 MPa.
Comparative example 3:
respectively weighing 58 parts of PC/ABS alloy reclaimed materials, 20 parts of nano silicon dioxide CW-SiO2-001, 17 parts of toughening agent ABS high-rubber powder AP6000, 0.2 part of antioxidant 1076, 0.3 part of antioxidant DSTDP and 0.1 part of lubricant pentaerythritol stearate according to the weight ratio, adding the materials into a high-speed mixer, uniformly mixing, then adding the uniformly mixed mixture into an extruder, and granulating after water cooling. Wherein the processing temperature of the extruder is 200 ℃, 220 ℃, 230 ℃, 240 ℃, 250 ℃ and 250 ℃ from the feed opening to the die orifice in sequence, the rotating speed of the extruder is 350rpm, and the vacuum degree is-0.06 MPa.
The composite materials prepared in examples 1-3 and comparative examples 1-3 have comprehensive performance test data as shown in table 1 below:
TABLE 1
Remarking:
1. the tensile strength, the flexural modulus and the Charp notched impact strength are all detected by the GB standard of the industry, wherein the tensile strength is GB1040, the flexural modulus is GB9341, the notched impact strength is GB1843 and the heat distortion temperature is GB 1634. The composite materials prepared in each example and comparative example were prepared into the same specimens, wherein the tensile test speed was 50mm/min, the bending test speed was 2mm/min, and the CHARP notch impact pendulum energy was 4J;
2. the photoaging test sample plate is a black 50 x 80 x 3mm plate and is tested for 200h by ISO 4892 standard method A;
3.Δ E is the comparison of the prototype test data before and after light post-formation.
As can be seen from the above Table 1, compared with the comparative example, the addition of the compound heat-resistant agent in the invention can significantly improve the rigidity, toughness and thermal deformation temperature of the recovered PC/ABS alloy material; meanwhile, the light-resistant stability of the product is better.
Compared with the examples 1-3, the heat distortion temperature of the recovered PC/ABS alloy material can be obviously improved by adding the compound heat-resistant agent, and the heat resistance of the material is obviously improved.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications can be made to the embodiments and the generic principles defined herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make modifications and alterations without departing from the scope of the present invention.
Claims (9)
1. A modified regenerated PC/ABS alloy reclaimed material is characterized in that: the composition is prepared from the following components in parts by weight: 40-75 parts of PC/ABS alloy reclaimed materials, 10-30 parts of compound heat-resistant agent, 10-25 parts of toughening agent, 0.2-0.5 part of antioxidant and 0.1-0.5 part of lubricant; the compound heat-resistant agent is a nano silicon dioxide doped terpolymer, and the terpolymer is a styrene-N-phenylmaleimide-maleic anhydride terpolymer.
2. The modified recycled PC/ABS alloy recycled material of claim 1, wherein the modified recycled PC/ABS alloy recycled material comprises the following components in percentage by weight: the recovered PC/ABS alloy material is crushed into crushed material with particle size smaller than 10mm after being cleaned and air dried, and then the crushed material is circularly dried for 2-8h at the temperature of 100 ℃ and 120 ℃ to ensure that the water content is lower than 0.25 wt%.
3. The modified recycled PC/ABS alloy recycled material of claim 1, wherein the modified recycled PC/ABS alloy recycled material comprises the following components in percentage by weight: the toughening agent is high-rubber-powder ABS, wherein the mass fraction of rubber in the high-rubber-powder ABS is 50-70%.
4. The modified recycled PC/ABS alloy recycled material of claim 1, wherein the modified recycled PC/ABS alloy recycled material comprises the following components in percentage by weight: the preparation method of the compound heat-resistant agent comprises the following steps: premixing styrene-N-phenylmaleimide-maleic anhydride terpolymer and silane coupling agent in a high-speed mixer at 80-90 ℃ for 1-3 min; then adding nano silicon dioxide and continuously blending for 1-3min to obtain the compound heat-resistant agent.
5. The modified recycled PC/ABS alloy material as claimed in claim 4, wherein the modified recycled PC/ABS alloy material comprises: the mass ratio of the nano silicon dioxide, the styrene-N-phenylmaleimide-maleic anhydride terpolymer to the silane coupling agent is 1: (3-6): 0.3.
6. the modified recycled PC/ABS alloy recycled material of claim 1, wherein the modified recycled PC/ABS alloy recycled material comprises the following components in percentage by weight: the antioxidant is at least one of antioxidant 1076, antioxidant DSTDP and antioxidant 168.
7. The modified recycled PC/ABS alloy recycled material of claim 1, wherein the modified recycled PC/ABS alloy recycled material comprises the following components in percentage by weight: the lubricant is at least one of silane polymer, liquid paraffin, solid paraffin, fatty acid salt, fatty acid amide, calcium stearate, zinc stearate, stearic acid amide, methylene bis-stearic acid amide and N, N-ethylene bis-stearic acid amide.
8. The method for preparing the modified recycled PC/ABS alloy material as claimed in any one of claims 1 to 7, wherein the method comprises the following steps: adding the recovered PC/ABS alloy, the compound heat-resistant agent, the toughening agent, the antioxidant and the lubricant into a high-speed mixer according to the parts by weight, and uniformly mixing; and then, melting and extruding the uniformly mixed materials by an extruder, and granulating to prepare the modified regenerated PC/ABS alloy reclaimed material.
9. The method of claim 8, wherein: the temperature of the extruder from a feed opening to a die opening is 200-260 ℃; the rotating speed of the extruder is 180-400 rpm; the vacuum degree is-0.07 to-0.03 MPa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113817304A (en) * | 2021-09-18 | 2021-12-21 | 金旸（厦门）新材料科技有限公司 | Composite nano silicon dioxide modified PC/ABS alloy material and preparation method thereof |
| WO2024038113A1 (en) * | 2022-08-17 | 2024-02-22 | Skytech | Acrylonitrile-butadiene-styrene material composition |
-
2019
- 2019-06-28 CN CN201910583596.5A patent/CN112143194A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113817304A (en) * | 2021-09-18 | 2021-12-21 | 金旸（厦门）新材料科技有限公司 | Composite nano silicon dioxide modified PC/ABS alloy material and preparation method thereof |
| WO2024038113A1 (en) * | 2022-08-17 | 2024-02-22 | Skytech | Acrylonitrile-butadiene-styrene material composition |
| FR3138918A1 (en) * | 2022-08-17 | 2024-02-23 | Skytech | Acrylonitrile-butadiene-styrene material composition |
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