CN112552634A - Flame-retardant ABS composition and preparation method and application thereof - Google Patents
Flame-retardant ABS composition and preparation method and application thereof Download PDFInfo
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- CN112552634A CN112552634A CN202011374962.5A CN202011374962A CN112552634A CN 112552634 A CN112552634 A CN 112552634A CN 202011374962 A CN202011374962 A CN 202011374962A CN 112552634 A CN112552634 A CN 112552634A
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The invention discloses a flame-retardant ABS composition, which comprises the following components in parts by weight: 45-84.8 parts of ABS resin; 10-25 parts of a cyclic phosphazene compound; 3-18 parts of organic phosphinate; 2-10 parts of nitrogen flame retardant; 0.2-2 parts of a processing aid. According to the invention, the cyclic phosphazene compound, the organic phosphinate and the nitrogen flame retardant are compounded, so that the mechanical property and the glossiness of the ABS composition can be maintained under the condition that the flame retardant grade of the ABS composition is higher than that of V-1. The composition can be used for preparing household appliance shell products.
Description
Technical Field
The invention relates to the field of engineering plastics, and particularly relates to a flame-retardant ABS composition, and a preparation method and application thereof.
Background
ABS belongs to terpolymer, contains polybutadiene rubber component in its chemical structure, has inflammability, and compared with engineering materials, it is difficult to char in the combustion process, and it has great technical difficulty to realize high-grade flame retardant property. At present, ABS materials are commonly used as shells of household appliances, and fire disasters can be caused by overheating, electric leakage, aging and the like in the using process of the products, so that the life of people is greatly threatened. The flame retardant ABS can realize V-0, V-1 and V-2 flame retardant grades at present, but only the V-2 grade can realize halogen-free flame retardant, the V-0 grade can only be realized by a brominated flame retardant system at present, namely, the brominated flame retardant ABS material can generate larger smoke and toxic gas in the combustion process, so that great harm can be caused to human health, the halogen-free flame retardant system has smaller harmfulness in the combustion process, is the development trend of future flame retardant materials, and also becomes a hotspot of research all the time, but the halogen-free V-0 flame retardant ABS material can be satisfied at present, and has some defects in performance, such as poor mechanical property, and the application of the halogen-free flame retardant ABS material is limited.
Halogen-free flame retardant also needs to be added with a large amount of phosphorus-containing flame retardant to achieve the flame retardant effect at present, but the addition of organic phosphorus can plasticize the material, so that the loss of mechanical properties is serious, and especially the impact property is reduced by more than 80%.
Chinese patent (CN102690491A) discloses a heat-resistant halogen-free flame-retardant ABS resin composition and a preparation method thereof, and although the patent discloses that the flame retardance of the ABS resin composition is improved by compounding a phosphorus-nitrogen flame retardant and an organic hypophosphite, the glossiness of the ABS resin composition is reduced, the impact strength is low, and some ABS resin compositions can only reach 3KJ/m2And the patent only partially achieves the V-0 flame retardant rating.
Therefore, the existing ABS composition has the problems that the halogen-free V-1 flame retardant grade and the mechanical property are not ensured at the same time.
Disclosure of Invention
The invention provides a flame-retardant ABS composition for overcoming the defects that the existing ABS composition has low glossiness and impact strength and cannot meet the flame-retardant grade above halogen-free V-1 grade.
The invention also aims to provide a preparation method of the flame-retardant ABS composition.
Another object of the present invention is to provide the use of said flame retardant ABS composition.
In order to solve the technical problems, the invention adopts the technical scheme that:
a flame-retardant ABS composition comprises the following components in parts by weight:
according to the invention, the cyclic phosphazene compound, the organic phosphinate and the nitrogen flame retardant are compounded, so that the flame retardant efficiency of a flame retardant system is improved, the addition amount of the flame retardant is reduced, the physical property of ABS is retained to the greatest extent, and the mechanical property and the glossiness can be maintained under the condition that the composition has V-1 flame retardant property. The nitrogen flame retardant is introduced to reduce the total content of organic phosphorus and improve the mechanical property, the content of the nitrogen flame retardant is low, and the glossiness of the nitrogen flame retardant can be kept at a high level.
The ABS resin has a relative density of 1.03-1.08% and a polybutadiene content of 12-25%.
Preferably, the ratio of the cyclic phosphazene compound to the organic phosphinate to the nitrogen flame retardant is (3-2) to (1.5-1) to (1-0.5), and when the ratio of the cyclic phosphazene compound to the organic phosphinate to the nitrogen flame retardant is within this range, the glossiness is kept at a high level.
Preferably, the cyclic phosphazene compound is a compound of the following structural formula:
wherein the R group is selected from-SiOH2、-NHR、-NH2、-NR2、-NCH、-NO3、-NCO、-N(CH3)、-CH3or-C6H5One kind of (1).
More preferably, the R group of the cyclic phosphazene compound is selected from-C6H5。
Preferably, the organic phosphinate is a compound of the following general structural formula:
wherein R' is selected from-SiH3、-SiCl3、-SiHCl2、-SiHO3、-((CH3)5Si)2O、-NHR、-NH2、-NR2、-NCH、-NO3、-C(CH3)3、-NCO、-N(CH3) or-C2H5One kind of (1).
More preferably, R' of the organic phosphinate is selected from-C2H5。
Preferably, the nitrogen-based flame retardant is a compound having the following structural formula:
wherein the degree of polymerization n satisfies: n is more than or equal to 2 and less than 1600, the phosphorus content in the nitrogen flame retardant is 30-32%, the nitrogen content is 14-16%, and the phosphorus and nitrogen elements are beneficial to promoting the flame retardant efficiency and improving the flame retardant performance.
The test method of the nitrogen element comprises the following steps: the pretreatment was carried out by the bomb combustion method, and then the analysis was carried out by ion chromatography. The oxygen bomb combustion method is that about 5-10g of sample is completely combusted in a closed system of high pressure oxygen, residual gas after the sample is combusted is absorbed by alkali solution, the time and area of element peak in absorption liquid are measured by an ion chromatograph, and the amount is quantified by an external standard method.
The method for testing the content of the phosphorus element comprises the following steps: placing 0.4-0.6 g of sample particles to be detected in a round bottom flask, and adding 10mL of concentrated H2SO4And 5mL of H2O2Digesting with 480 deg.C electric heating plate for 35-45 min until complete carbonization; cooling for 5min after carbonization, and adding appropriate amount of H2O2Judging whether complete carbonization is achieved, if not, continuing to add H2O2And (3) until the carbonization is completed, cooling in a 100mL volumetric flask to a constant volume, filtering, centrifuging to obtain a supernatant, and then carrying out inductively coupled plasma emission spectroscopy (ICP) test.
Preferably, the processing aid is at least one of an antioxidant, a lubricant, or an anti-drip agent.
The antioxidant is selected from one or more of alkyl monophenols, alkyl polyphenols and thiobisphenols.
The lubricant is selected from stearamide lubricants, such as EBS B50, EB-FF, EBS P400 or WK 1890.
Preferably, the anti-dripping agent is selected from polytetrafluoroethylene compounds.
The invention also provides a preparation method of the flame-retardant ABS composition, which comprises the following steps:
s1, weighing ABS resin, a cyclic phosphazene compound, an organic phosphinate, a nitrogen flame retardant and a processing aid, and then putting the raw materials into a mixer to be uniformly mixed to obtain a premix;
s2, feeding the premix prepared in the step S1 into an extruder for extrusion, and performing post-processing to obtain the flame-retardant ABS composition.
The post-processing comprises water cooling and granulation.
The flame-retardant ABS composition is applied to preparation of household appliances and office supplies.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a flame-retardant ABS composition, which is prepared by compounding a cyclic phosphazene compound, an organic phosphinate and a nitrogen flame retardant, and can maintain mechanical property and glossiness under the condition of flame retardance of more than V-1 level. The nitrogen flame retardant is introduced to reduce the total content of organic phosphorus and improve the mechanical property and the heat resistance, the content of the nitrogen flame retardant is low, and the glossiness of the nitrogen flame retardant can be kept at a higher level.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, but the embodiments of the present invention are not limited thereto.
The reagents, methods and equipment adopted by the invention are conventional in the technical field if no special description is given.
The following examples and comparative examples employ the following starting materials:
ABS resin: styrene-acrylonitrile-butadiene copolymer, ABS 0215A, Gilin petrochemical, relative density 1.04g/cm3Polybutadiene content 19%;
cyclic phosphazene compound a: in the structure, the R group is-C6H5HT-231, New materials of Shandong Taxing, Inc.;
cyclic phosphazene compound B: in the structure, the R group is-CH3Commercially available;
cyclic phosphazene compound C: the R group in the structure is-F, and is sold in the market;
cyclic phosphazene compound D: in the structure, the R group is-NH2Commercially available;
organic phosphinate A: in the structure R' is-C2H5Group, M-116, Shanghai Strength Dai Co;
organic phosphinate B: in the structure, the R' group is-NH2Commercially available;
organic phosphinate C: the R' group in the structure is isobutyl and is commercially available;
organic phosphinate D: zinc diethylphosphinate, YT-ZDP950, CuMo Ltd, Chongqing;
nitrogen flame retardant A: ammonium polyphosphate, 32% of phosphorus, 1500% of polymerization degree n and 14% -16% of nitrogen, Mingkai Fine chemical Co., Ltd, Wujiang;
nitrogen flame retardant B: ammonium polyphosphate, with 31% phosphorus content and 1200 degree of polymerization n, is commercially available;
processing aid: alkyl monophenolic antioxidants, Irganox 1010, basf;
a hard amide lubricant, EBS B50, gukaso corporation;
polytetrafluoroethylene anti-drip agent, SN80-SA7, Guangzhou entropy energy Corp.
The present invention will be described in detail with reference to examples.
The following examples 1 to 19 and comparative examples 1 to 5 were prepared into flame retardant ABS compositions by the following method, and the components were weighed in the weight ratios shown in tables 1 to 4; the method comprises the following specific steps:
s1, weighing ABS resin, a cyclic phosphazene compound, organic phosphinate, a nitrogen flame retardant and a processing aid, and then putting the raw materials into a high-speed stirring mixer to be uniformly mixed to obtain a premix;
s2, feeding the premix prepared in the step S1 into an extruder, extruding at the temperature of 190 ℃ and 220 ℃, at the screw host rotation speed of 400r/min and at the feeding rotation speed of 350r/min, cooling with water, and granulating to obtain the flame-retardant ABS composition.
TABLE 1 formulations of examples 1-8
TABLE 2 formulations of examples 9-15
TABLE 3 formulations of examples 16-19
| Parts by mass | Example 16 | Example 17 | Example 18 | Example 19 |
| ABS resin | 70 | 70 | 70 | 70 |
| Cyclic phosphazene compound A | 20 | 20 | 20 | 20 |
| Organic phosphinate A | — | — | — | 10 |
| Organic phosphinate B | 10 | — | — | — |
| Organic phosphinate C | — | 10 | — | — |
| Organic phosphinic acid salt D | — | — | 10 | — |
| Nitrogen-containing flame retardant A | 5 | 5 | 5 | — |
| Nitrogen-series flame retardant B | — | — | — | 5 |
| Processing aid | 0.5 | 0.5 | 0.5 | 0.5 |
TABLE 4 formulations for comparative examples 1-5
| Parts by mass | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 |
| ABS | 70 | 70 | 70 | 70 | 70 |
| Cyclic phosphazene compound A | 20 | 20 | — | — | 30 |
| Organic phosphinate A | 10 | — | — | 10 | 10 |
| Nitrogen-containing flame retardant A | — | — | 5 | — | 20 |
| Processing aid | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
Table 5 performance test methods:
| detecting items | Execution criteria | Test conditions | Unit of |
| Notched impact strength of cantilever beam | ISO 180/1A:2000 | 4mm,23℃ | KJ/m2 |
| Vertical combustion | UL 94：2015 | 2.0mm | / |
| Degree of gloss | ISO-2813：2014 | 60°Ave. | / |
TABLE 6 data for the examples and comparative examples
From examples 1 to 4, with the increase of the content of the cyclic phosphazene compound, the material maintains the V-0 flame retardant grade, and the notch impact strength is reduced to some extent, because the cyclic phosphazene compound, the nitrogen flame retardant and the ABS resin have slightly poor compatibility, and have a certain negative effect on the performance, but the overall performance is better, and the material has industrial application value, and because the cyclic phosphazene compound and the organic phosphinate exist, the reduction range is small; the cyclic phosphazene compound 3-4, the organic phosphinate and the nitrogen flame retardant have good proportion, so that the glossiness of the flame retardant is high.
From examples 2 and 5 to 7, with the increase of the content of the organic phosphinate, the flame retardance of V-0 is still maintained, the compatibility of the organic phosphinate and ABS resin is poor, and the notch impact strength is reduced, but in example 6, the cyclic phosphazene compound, the organic phosphinate and the nitrogen flame retardant have good proportion, and the glossiness is high.
From examples 9 to 12, the V-0 flame retardance is maintained with the increase of the content of the nitrogen-based flame retardant, and the gloss is reduced and is inferior to those of comparative examples 10 to 12 except that the weight ratio of the cyclic phosphazene compound, the organic phosphinate and the nitrogen-based flame retardant of example 9 is (3-2): (1.5-1): 1-0.5).
From examples 13 to 15, when the R group of the cyclic phosphazene compound is selected to be-CH3and-NH2The mechanical property is better than that of the R group which is-F, and the flame retardance is V-1 grade.
From examples 16 to 18, when organic secondary reactionThe R' group of the phosphonate is-NH2The mechanical property of the flame retardant is better than that of isobutyl of an R' group, the flame retardant is V-1 grade, and the organic hypophosphite of zinc diethyl phosphinate can also achieve V-1 flame retardant and has better mechanical property; from example 19, it can be seen that the flame retardant V-1 and better mechanical properties can also be achieved by selecting melamine as the nitrogen-based flame retardant.
In comparative examples 1 to 4, the flame retardant grade cannot be improved by blending the nitrogen-based flame retardant, the cyclic phosphazene compound or the organic phosphinate. As seen from comparative example 5, when a larger amount of the cyclic phosphazene compound and the nitrogen-based flame retardant was used, although V-0 flame retardance was achieved, both the notched impact strength and the gloss were drastically reduced.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The flame-retardant ABS composition is characterized by comprising the following components in parts by weight:
2. the flame retardant ABS composition of claim 1 wherein the cyclic phosphazene compound is a compound of the general structural formula:
wherein the content of the first and second substances,the R group being selected from-SiOH2、-NHR、-NH2、-NR2、-NCH、-NO3、-NCO、-N(CH3)、-CH3or-C6H5One kind of (1).
3. The flame retardant ABS composition of claim 2 wherein the R group of the cyclic phosphazene compound is selected from the group consisting of-C6H5。
4. The flame retardant ABS composition of claim 1 wherein the organic phosphinate is a compound of the general structural formula:
wherein R' is selected from-SiH3、-SiCl3、-SiHCl2、-SiHO3、-((CH3)5Si)2O、-NHR、-NH2、-NR2、-NCH、-NO3、-NCO、-C(CH3)3、-N(CH3) or-C2H5One kind of (1).
5. The flame retardant ABS composition of claim 4 wherein R' of the organic phosphinate is selected from the group consisting of-C2H5。
6. The flame retardant ABS composition of claim 1 wherein the nitrogen based flame retardant is a compound having the following general structural formula:
wherein the degree of polymerization n satisfies: n is more than or equal to 2 and less than 1600, and the nitrogen flame retardant contains 30-32 percent of phosphorus and 14-16 percent of nitrogen.
7. The flame retardant ABS composition of claim 1 wherein the processing aid is at least one of an antioxidant, a lubricant, or an anti-drip agent.
8. The flame retardant ABS composition according to claim 7, wherein the anti-dripping agent is a polytetrafluoroethylene compound.
9. The method for preparing the flame retardant ABS composition according to any of claims 1 to 8, comprising the steps of:
s1, weighing ABS resin, a cyclic phosphazene compound, organic phosphinate, a nitrogen flame retardant and a processing aid, and then putting the raw materials into a mixer to be uniformly mixed to obtain a premix;
s2, feeding the premix prepared in the step S1 into an extruder for extrusion, and performing post-processing to obtain the flame-retardant ABS composition.
10. Use of the flame retardant ABS composition according to any of claims 1 to 8 for the production of household appliances, office products.
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| CN202011374962.5A CN112552634A (en) | 2020-11-30 | 2020-11-30 | Flame-retardant ABS composition and preparation method and application thereof |
| PCT/CN2021/120547 WO2022111024A1 (en) | 2020-11-30 | 2021-09-26 | Flame-retardant abs composition, and preparation method therefor and application thereof |
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| WO2022111024A1 (en) * | 2020-11-30 | 2022-06-02 | 金发科技股份有限公司 | Flame-retardant abs composition, and preparation method therefor and application thereof |
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| CN104140559A (en) * | 2013-05-10 | 2014-11-12 | 信汇科技有限公司 | Application of cyclophosphazene compound in preparation of resin as fire retardant |
| WO2014195874A1 (en) * | 2013-06-04 | 2014-12-11 | Sabic Innovative Plastics Ip B.V. | Blended thermoplastic compositions with improved impact strength and flow |
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| WO2001094472A1 (en) * | 2000-06-02 | 2001-12-13 | Polyplastics Co., Ltd. | Flame-retardant resin composition |
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| US7205346B2 (en) * | 2001-11-30 | 2007-04-17 | Polyplastics Co., Ltd. | Flame-retardant resin composition |
| CN101663374B (en) * | 2007-04-03 | 2014-10-15 | 巴斯夫欧洲公司 | DOPO flame retardant compositions |
| JP5609644B2 (en) * | 2009-07-17 | 2014-10-22 | 東レ株式会社 | Flame retardant thermoplastic resin composition and molded article |
| DE102015211728A1 (en) * | 2015-06-24 | 2016-12-29 | Clariant International Ltd | Anti-corrosive flame retardant formulations for thermoplastic polymers |
| CN109721768A (en) * | 2018-12-22 | 2019-05-07 | 广州市寅源新材料科技有限公司 | Bittern-free phosphorous-nitrogen composite flame-retardant agent and halogen-free combustion-proof thermoplastic polymer comprising it |
| CN112552634A (en) * | 2020-11-30 | 2021-03-26 | 金发科技股份有限公司 | Flame-retardant ABS composition and preparation method and application thereof |
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| CN102690491A (en) * | 2012-05-11 | 2012-09-26 | 金发科技股份有限公司 | Heat-resistant, halogen-free and flame-retardant ABS (acrylonitrile butadiene styrene) resin composite and preparation method thereof |
| CN104140559A (en) * | 2013-05-10 | 2014-11-12 | 信汇科技有限公司 | Application of cyclophosphazene compound in preparation of resin as fire retardant |
| WO2014195874A1 (en) * | 2013-06-04 | 2014-12-11 | Sabic Innovative Plastics Ip B.V. | Blended thermoplastic compositions with improved impact strength and flow |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022111024A1 (en) * | 2020-11-30 | 2022-06-02 | 金发科技股份有限公司 | Flame-retardant abs composition, and preparation method therefor and application thereof |
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