CN113881183B - Flame-retardant ABS resin composition with low infrared reflectivity and preparation method thereof - Google Patents
Flame-retardant ABS resin composition with low infrared reflectivity and preparation method thereof Download PDFInfo
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- CN113881183B CN113881183B CN202111320095.1A CN202111320095A CN113881183B CN 113881183 B CN113881183 B CN 113881183B CN 202111320095 A CN202111320095 A CN 202111320095A CN 113881183 B CN113881183 B CN 113881183B
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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Abstract
The invention relates to a flame-retardant ABS resin composition with low infrared reflectivity and a preparation method thereof, wherein the composition comprises the following components in parts by weight: 100 parts of ABS resin, 10-25 parts of brominated flame retardant, 3-6 parts of antimony compound, 10-38 parts of chlorinated polyethylene, 0.1-0.5 part of poly-4-methylpentene-1 5-20 part of anti-dripping agent, 0.2-1 part of antioxidant, 1-3 parts of lubricant and 2-8 parts of carbon black; adding the components into a high-speed mixer according to the parts by weight, fully mixing, then placing into a screw machine, carrying out melt extrusion at 180-230 ℃ and under the screw rotating speed of 200-500 rpm, cooling and granulating to obtain the low-reflectivity flame-retardant ABS resin composition. Compared with the prior art, the invention can obviously reduce the reflectivity of the flame-retardant ABS.
Description
Technical Field
The invention relates to a resin composition, in particular to a flame-retardant ABS resin composition with low infrared reflectivity and a preparation method thereof.
Background
The smoke alarm is common safety equipment in modern life, and the working principle of the smoke alarm is that the change of smoke concentration is sensed by an infrared detector, so that the alarm and the prompt are realized, and the occurrence of fire is avoided. The smoke alarm mainly comprises an optical maze, an infrared generating and receiving electric tube, and the wavelength of infrared rays is generally in the range of 800-1500 nm. When no smoke exists in the environment, the infrared light is not received by the receiving tube theoretically; when smoke exists in the environment, particles of the smoke can enter the maze to scatter infrared light emitted by the generating tube, a certain linear relation exists between the intensity of the scattered infrared light and the smoke concentration, and a receiver can prompt or alarm when receiving the change of the intensity of the infrared light. Smoke alarms sometimes have false alarm behavior, which reduces device reliability. One of the main reasons for false positives is that the optical maze itself has a reflectivity that is too high, resulting in a receiver with fluctuations in the infrared intensity. The false alarm rate of the alarm can be effectively reduced by reducing the infrared reflectivity of the surface of the optical maze.
The optical maze is a flame-retardant ABS injection molding part, and in order to reduce the false alarm rate of the smoke alarm, the reflectivity of infrared light of the flame-retardant ABS needs to be reduced. The factors influencing the reflectivity mainly include the reflectivity and the color of the binder material. Of the different colors, the reflectance of black is the lowest. The infrared reflectivity of the black flame-retardant ABS of different flame-retardant systems is generally 8-15% at 800-1500nm, and if the reflectivity can be reduced to below 3%, the false alarm rate of the smoke alarm can be greatly reduced.
The usual flame retardant systems for ABS are halogen based flame retardants and antimony trioxide synergistic systems. In this system, the reflectance of antimony trioxide is the highest, and therefore it is necessary to reduce the amount added as much as possible. If antimony trioxide is not added into ABS, more halogen flame retardant is needed to be added, so that the cost is obviously raised, and the reflectivity can be reduced by about 1 percent, and the aim of less than 3 percent can not be achieved. Reducing the reflectivity of flame retardant ABS is a difficult problem in the industry, and no effective technology is currently available to reduce the reflectivity of flame retardant ABS.
Disclosure of Invention
The invention aims to solve the technical problems and provide a flame-retardant ABS resin composition with low infrared reflectivity, which can remarkably reduce the reflectivity of flame-retardant ABS.
The aim of the invention can be achieved by the following technical scheme:
the flame-retardant ABS resin composition with low infrared reflectivity comprises the following components in percentage by weight:
further, the ABS resin is an acrylonitrile-butadiene-styrene copolymer.
Further, the brominated flame retardant is one or a mixture of a plurality of tetrabromobisphenol A, decabromodiphenylethane, tri (bromophenyl) triazine, brominated epoxy, hexabromocyclododecane, tetrabromophenol and brominated styrene. The type of flame retardant has little effect on the reflectivity of the final product, and all brominated flame retardants suitable for flame retarding ABS can be used.
Further, the antimony compound is antimony trioxide. The content of antimony trioxide is not more than 6 parts because the reflectance of antimony trioxide is highest, and further increasing the content of antimony trioxide results in an increase in reflectance.
Further, the chlorinated polyethylene is CPE for short, and the chlorine content is 25-40%. CPE is necessary in this flame retardant ABS system because CPE not only acts as a synergistic flame retardant, but is also a compatibilizer for ABS and TPX. While too high or too low a content of chlorine results in poor compatibility with ABS and TPX, resulting in deterioration of flame retardant properties and mechanical properties.
Further, the poly-4-methylpentene-1 (TPX) is a key component for reducing the infrared reflectivity.
Further, the anti-dripping agent is Polytetrafluoroethylene (PTFE) of 300-500 ten thousand.
Further, the antioxidant is hindered phenol antioxidant or phosphite antioxidant;
further, the lubricant is one or a mixture of a plurality of silicone oil, ethylene bis-stearamide, magnesium stearate, polyethylene wax and ethylene-vinyl acetate copolymer.
The invention also provides a preparation method of the flame-retardant ABS resin composition with low infrared reflectivity, which comprises the following steps:
(1) Weighing the following components in parts by weight: 100 parts of ABS resin, 10-25 parts of brominated flame retardant, 3-6 parts of antimony compound, 10-38 parts of chlorinated polyethylene, 0.1-0.5 part of poly-4-methylpentene-1 5-20 part of anti-dripping agent, 0.2-1 part of antioxidant, 1-3 parts of lubricant and 2-8 parts of carbon black;
(2) Adding the components in the step (1) into a high-speed mixer according to the parts by weight, fully mixing, then placing into a screw machine, carrying out melt extrusion at 180-230 ℃ and at a screw rotating speed of 200-500 rpm, cooling and granulating to obtain the low-reflectivity flame-retardant ABS resin composition.
Compared with the prior art, the invention has the following advantages:
1. the resin composition of the invention is introduced into TPX, which is the resin with the lowest refractive index, highest transmittance and lowest infrared reflectivity, and can obviously reduce the reflectivity of flame-retardant ABS. Because the compatibility of TPX and ABS is poor, the addition of TPX can significantly reduce the flame retardance and mechanical properties of flame retardant ABS. And the CPE is added to improve the dispersion of TPX in the ABS, so that the flame retardance and the mechanical property are maintained, and the infrared reflectivity of the flame-retardant ABS is effectively reduced.
2. After the compatibility is solved, the TPX can be highly dispersed in the flame-retardant ABS, so that the infrared reflectivity of the flame-retardant ABS is reduced from 15% to 1.3-3%, and the flame-retardant ABS resin composition with low reflectivity is obtained.
Drawings
FIG. 1 shows reflectance curves (measured by a reflectometer) of examples 1, 2 and comparative example 6.
Detailed Description
The present invention will be described in detail with reference to specific examples.
Examples:
a preparation method of flame-retardant ABS resin with low infrared reflectivity comprises the following steps:
according to the weight parts of the formula components in the table 1, the raw materials are added into a high-speed mixer for fully mixing, then are placed into a screw machine for melt extrusion at the extrusion temperature of 180-230 ℃ and the screw rotating speed of 200-500 rpm, and are cooled and granulated to obtain the product.
Wherein examples 1-5 are as in Table 1, the materials used are as follows:
ABS: ABS757, taiwan Qimei Co., ltd
Flame retardant 1: tris (bromophenyl) triazine, FR245, dead sea bromine company;
flame retardant 2: tetrabromobisphenol a, FR1524, dead sea bromine company;
flame retardant 3: brominated epoxy, open-face chemistry;
antimony trioxide: commercially available
CPE1: chlorine content 38%, commercially available
CPE2: chlorine content 26%, commercially available
TPX: RT18, mi=26, japan three-well chemical company
Anti-drip agent: PTFE, guangzhou entropy energy polymerization Co
An antioxidant: iranox 1076, ciba
And (3) a lubricant: EBS (ethylene bis stearamide), commercially available
Carbon black: commercially available
Table 1 example formulation weight parts
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| ABS | 100 | 100 | 100 | 100 | 100 |
| Flame retardant 1 | 18 | 5 | |||
| Flame retardant 2 | 25 | 15 | 13 | ||
| Flame retardant 3 | 10 | 5 | |||
| Antimony trioxide | 3 | 6 | 5 | 4 | 3 |
| CPE1 | 20 | 5 | 38 | ||
| CPE2 | 35 | 5 | 30 | ||
| TPX | 10 | 20 | 5 | 16 | 18 |
| PTFE | 0.3 | 0.5 | 0.1 | 0.3 | 0.5 |
| Iranox 1076 | 0.2 | 0.8 | 1 | 0.5 | 0.4 |
| EBS | 1 | 1 | 3 | 1 | 3 |
| Carbon black | 2 | 5 | 8 | 3 | 6 |
Comparative examples 1 to 8:
according to the weight percentage of the formula components in the table 2, the raw materials are added into a high-speed mixer for fully mixing, then are placed into a screw machine for melt extrusion under the conditions of extrusion temperature of 180-230 ℃ and screw rotating speed of 200-500 rpm, and are cooled and granulated, thus obtaining the product.
Wherein the materials of table 2 are as follows:
CPE3: chlorine content 20%, commercially available
CPE4: commercial available with 47% chlorine content
Table 2 comparative example formulation parts by weight
Performance evaluation method and implementation standard thereof
Mechanical property test:
the flame retardant ABS resin compositions prepared in examples 1 to 5 and comparative examples 1 to 6 were subjected to mechanical property test, and the results are shown in Table 3:
charpy notched impact Strength: the impact energy was 4J and the test temperature was 23℃according to ISO 179-1:2010 (E) standard;
tensile strength: the test is carried out according to ISO 527:2012 (E), the test conditions are 50mm/min;
flame retardancy: according to UL94, vertical burning, spline thickness 1.5mm;
infrared reflectance: the spectrophotometer, infrared test wave band is 800-1500nm;
table 3 comparative examples and comparative examples performance
Comparative example 1 the amount of antimony trioxide was increased and the infrared reflectance was increased as compared with example 1.
Comparative example 2 compared with example 2, the amount of antimony trioxide is reduced, the flame retardance is failed, and the infrared reflectivity is reduced.
Comparative example 3 has CPE added to it as compared to example 1, but comparative example 3 has no TPX added and the infrared reflectance is significantly increased.
Comparative example 4 was compared with example 4, in which TPX was added, but comparative example 4 was not added with CPE, the system compatibility was poor, the notched impact strength was significantly reduced, the flame retardance was unacceptable, and the infrared reflectance was significantly increased.
Comparative example 5 compared with example 5, CPE has lower chlorine content and poor system compatibility, which results in reduced mechanical properties, unqualified flame retardance and increased infrared reflectivity.
Comparative example 6 compared with example 3, the chlorine content in CPE is higher, the system compatibility is poor, the impact strength of the system notch is reduced, the flame retardance is unqualified, and the infrared reflectivity is increased.
FIG. 1 shows the reflectance curves (measured by reflectometer) of examples 1 and 2 and comparative example 6, and it can be seen from the combination of FIG. 1 and Table 3 that the inventive composition reduced the infrared reflectance of flame retardant ABS from 15% to 1.3-3%, resulting in a flame retardant ABS resin composition with low reflectance.
The above embodiments are only for illustrating the technical solution of the present invention, but not for limiting the present invention, and the changes, substitutions, modifications and simplifications made by those skilled in the art within the spirit of the present invention are equivalent changes without departing from the spirit of the present invention, and the present invention shall also fall within the scope of the claims of the present invention.
Claims (6)
1. The flame-retardant ABS resin composition with low infrared reflectivity is characterized by comprising the following components in parts by weight:
100 parts of ABS resin;
10-25 parts of brominated flame retardant;
3-6 parts of antimony compound;
10-38 parts of chlorinated polyethylene;
poly 4-methylpentene-1 5-20 parts;
0.1-0.5 part of anti-dripping agent;
0.2-1 part of antioxidant;
1-3 parts of a lubricant;
2-8 parts of carbon black;
the ABS resin is an acrylonitrile-butadiene-styrene copolymer;
the brominated flame retardant is one or a mixture of more of tetrabromobisphenol A, decabromodiphenylethane, tri (bromophenyl) triazine, brominated epoxy, hexabromocyclododecane, tetrabromophenol and brominated styrene;
the antimony compound is antimony trioxide;
the chlorine content in the chlorinated polyethylene is 25-40%.
2. The flame retardant ABS resin composition according to claim 1 wherein the anti-dripping agent is 300 to 500 tens of thousands of polytetrafluoroethylene.
3. The flame retardant ABS resin composition according to claim 1 wherein the antioxidant is a hindered phenol antioxidant or a phosphite antioxidant.
4. The flame-retardant ABS resin composition with low infrared reflectivity according to claim 1, wherein the lubricant is one or a mixture of more of silicone oil, ethylene bis-stearamide, magnesium stearate, polyethylene wax and ethylene-vinyl acetate copolymer.
5. A method for preparing a flame retardant ABS resin composition having a low infrared reflectance according to any one of claims 1 to 4, comprising the steps of:
(1) Weighing the following components in parts by weight: 100 parts of ABS resin, 10-25 parts of brominated flame retardant, 3-6 parts of antimony compound, 10-38 parts of chlorinated polyethylene, 0.1-0.5 part of poly-4-methylpentene-1 5-20 part of anti-dripping agent, 0.2-1 part of antioxidant, 1-3 parts of lubricant and 2-8 parts of carbon black;
(2) Adding the components in the step (1) into a high-speed mixer according to the parts by weight, fully mixing, then placing into a screw machine for melt extrusion, cooling and granulating to obtain the low-reflectivity flame-retardant ABS resin composition.
6. The method for preparing a flame retardant ABS resin composition with low infrared reflectivity according to claim 5, wherein the extrusion temperature of a screw machine is 180-230 ℃ and the screw rotating speed is 200-500 rpm.
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| WO2020108204A1 (en) * | 2018-11-27 | 2020-06-04 | 金发科技股份有限公司 | Abs composite material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7727418B2 (en) * | 2006-06-19 | 2010-06-01 | Sabic Innovative Plastics Ip B.V. | Infrared transmissive thermoplastic composition, and articles formed therefrom |
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- 2021-11-09 CN CN202111320095.1A patent/CN113881183B/en active Active
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| CN101538411A (en) * | 2009-04-17 | 2009-09-23 | 北京化工大学 | Catalysis carbon-forming type flame-retardant composite material and preparation method thereof |
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