CN114672104B - Environment-friendly methyl octabromoether flame-retardant master batch and preparation method and application thereof - Google Patents
Environment-friendly methyl octabromoether flame-retardant master batch and preparation method and application thereof Download PDFInfo
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- CN114672104B CN114672104B CN202210385211.6A CN202210385211A CN114672104B CN 114672104 B CN114672104 B CN 114672104B CN 202210385211 A CN202210385211 A CN 202210385211A CN 114672104 B CN114672104 B CN 114672104B
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C08K5/10—Esters; Ether-esters
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Abstract
The invention discloses an environment-friendly flame-retardant master batch of methyl octabromoether, a preparation method and application thereof, and relates to the technical field of flame-retardant materials, wherein the flame-retardant master batch comprises, by weight, 35-65 parts of methyl octabromoether, 5-30 parts of a stabilizer and 40-60 parts of polystyrene. The environment-friendly methyl octabromoether flame-retardant master batch prepared by the invention has high oxygen index, can achieve V0 level in the UL 94 level of vertical combustion, has very good flame-retardant effect, does not generate toxic gas in the flame-retardant process, meets the environment-friendly requirement, and can be widely used for preparing extruded polystyrene foam plastics (XPS).
Description
Technical Field
The invention relates to the technical field of flame-retardant materials, in particular to an environment-friendly flame-retardant master batch of methyl octabromoether, and a preparation method and application thereof.
Background
The polystyrene foam plastic is prepared by taking polystyrene resin as a main body and adding additives such as foaming agents, is a buffer material which is most used, has a closed-pore structure, small water absorption, excellent water resistance, small density, good mechanical strength and excellent buffer performance; the heat insulation material has the advantages of good processability, easy molding, good colorability, strong temperature adaptability, excellent radioactivity resistance and the like, and has high dimensional accuracy and uniform structure, so that the heat insulation material has high use ratio in the heat insulation of the outer wall.
The flame retardant commonly used for polystyrene foam plastic is hexabromocyclododecane, and the hexabromocyclododecane has excellent flame retardant effect, but when the flame retardant is used as the flame retardant, the dehydrobromination of the hexabromocyclododecane becomes severe at the temperature of more than 190 ℃, and the hazard of hydrogen bromide steam is more remarkable.
The most commonly used halogen-based flame retardants among the flame retardants have an incomparable high efficiency with other flame retardant series, but are not negligible to the environment and human hazards. The environmental protection problem is the focus of attention of auxiliary agent development and application, so the product structure of the flame retardant is regulated at home and abroad, and the development of the efficient environment-friendly flame retardant is increased.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the environment-friendly methyl octabromoether flame-retardant master batch, and the preparation method and the application thereof, wherein the flame-retardant master batch has high oxygen index, can achieve V0 level in the vertical combustion UL 94 level, does not generate toxic gas, and has a very good flame-retardant effect.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the environment-friendly flame-retardant master batch of the methyl octabromoether comprises, by weight, 35-65 parts of methyl octabromoether, 5-30 parts of stabilizer and 40-60 parts of polystyrene;
the stabilizer consists of pentaerythritol stearate, ethylene bisstearamide and a mineral stabilizer; the mineral stabilizer is at least one of zeolite, hydrotalcite and silicon carbonate;
the stabilizer comprises, by weight, 2-10 parts of pentaerythritol stearate, 2-10 parts of ethylene bis-stearamide and 1-10 parts of mineral stabilizer.
The preparation method of the environment-friendly methyl octabromoether flame-retardant master batch comprises the following steps:
step 1, setting the extruder to 120-200 ℃ according to requirements;
step 2, weighing various raw materials according to the parts by weight;
step 3, adding the weighed raw materials into a high-speed mixer according to the feeding sequence of polystyrene, a stabilizer and methyl octabromoether, and mixing for 5min;
step 4, putting the mixed materials into a feeding bin;
step 5, adding the materials into a double-screw feeder for melt extrusion;
and 6, cooling the extruded sample bars through a water tank, and then granulating to obtain the finished flame-retardant master batch.
Preferably, the frequency of the main machine of the double-screw feeder is 20-40 Hz, and the feeding frequency is 4-10 Hz.
Preferably, the weight ratio of the pentaerythritol stearate to the ethylene bisstearamide to the mineral stabilizer is (2-10): 1.
The environment-friendly methyl octabromoether flame-retardant master batch is applied to flame-retardant XPS products, and the addition amount of the flame-retardant master batch is 1-5wt%.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. the invention takes methyl octabromoether as the flame retardant, the methyl octabromoether has the advantages of high temperature resistance and good stability, and the combination of the mineral stabilizer increases the temperature resistance and the stability, has high oxygen index, can reach V0 grade in the vertical combustion UL 94 grade, and has very good flame retardant effect.
2. The invention can improve the heat stability of the flame-retardant master batch, the luster of the product and the processing property by adding the pentaerythritol stearate.
4. The flame-retardant master batch is used in XPS materials, has good compatibility with high polymer resin, has small addition amount and good foaming effect, and can perfectly replace hexabromocyclododecane under the same condition; the flame-retardant master batch disclosed by the invention has no accumulation, migration and durability after being added, does not harm the environment and human bodies, and belongs to an environment-friendly flame retardant.
Detailed Description
The environment-friendly methyl octabromoether flame retardant master batch, the preparation method and the application thereof provided by the invention are described in detail below by combining with the examples, but the environment-friendly methyl octabromoether flame retardant master batch is not to be construed as limiting the protection scope of the invention. In the present invention, all the preparation materials are commercially available products well known to those skilled in the art unless specified otherwise.
Example 1:
weighing 50 parts of polystyrene, 3 parts of pentaerythritol stearate, 4 parts of ethylene bisstearamide, 1 part of zeolite and 55 parts of methyl octabromoether, and adding into a high-speed mixer for fully mixing; adding the mixed materials into a double-screw extruder, adjusting the extrusion temperature to 120 ℃, the host frequency to 20Hz, the feeding frequency to 4Hz, and carrying out melt extrusion to obtain the flame-retardant master batch.
Example 2:
weighing 60 parts of polystyrene, 3 parts of pentaerythritol stearate, 3 parts of ethylene bisstearamide, 2 parts of hydrotalcite and 35 parts of methyl octabromoether, and adding into a high-speed mixer for fully mixing; adding the mixed materials into a double-screw extruder, adjusting the extrusion temperature to 140 ℃, the host frequency to 25Hz, the feeding frequency to 4.5Hz, and carrying out melt extrusion to obtain the flame-retardant master batch.
Example 3:
weighing 40 parts of polystyrene, 4 parts of pentaerythritol stearate, 8 parts of ethylene bisstearamide, 6 parts of silicon carbonate and 48 parts of methyl octabromoether, and adding into a high-speed mixer for fully mixing; adding the mixed materials into a double-screw extruder, adjusting the extrusion temperature to 160 ℃, the host frequency to 28Hz, and the feeding frequency to 6Hz, and carrying out melt extrusion to obtain the flame-retardant master batch.
Example 4:
weighing 45 parts of polystyrene, 5 parts of pentaerythritol stearate, 5 parts of ethylene bisstearamide, 10 parts of silicon carbonate and 40 parts of methyl octabromoether, and adding into a high-speed mixer for fully mixing; adding the mixed materials into a double-screw extruder, adjusting the extrusion temperature to 180 ℃, the host frequency to 35Hz, and the feeding frequency to 8Hz, and carrying out melt extrusion to obtain the flame-retardant master batch.
Example 5
Weighing 55 parts of polystyrene, 10 parts of pentaerythritol stearate, 5 parts of ethylene bisstearamide, 5 parts of silicon carbonate and 65 parts of methyl octabromoether, and adding into a high-speed mixer for fully mixing; adding the mixed materials into a double-screw extruder, adjusting the extrusion temperature to 200 ℃, the host frequency to 40Hz, and the feeding frequency to 10Hz, and carrying out melt extrusion to obtain the flame-retardant master batch.
The flame retardant master batches prepared in examples 1 to 5 were added to extruded polystyrene foam (XPS) in different addition amounts, and the sample bar combustion test was performed on the flame retardant XPS containing different parts by weight of the flame retardant master batches, and the obtained results are shown below:
flame-retardant XPS spline combustion test results of flame-retardant master batches with different contents
As can be seen from the table, when the addition amount of the flame retardant master batch is more than 3%, the oxygen index of the flame retardant effect reaches more than 30%, and when the addition amount of the flame retardant master batch is more than 2%, the vertical combustion UL 94 level reaches V0 level, so that the flame retardant master batch has a very good flame retardant effect.
Claims (5)
1. The environment-friendly flame-retardant master batch of the methyl octabromoether is characterized by comprising, by weight, 35-65 parts of methyl octabromoether, 5-30 parts of stabilizer and 40-60 parts of polystyrene;
the stabilizer consists of pentaerythritol stearate, ethylene bisstearamide and a mineral stabilizer; the mineral stabilizer is at least one of zeolite, hydrotalcite and silicon carbonate;
the stabilizer comprises, by weight, 2-10 parts of pentaerythritol stearate, 2-10 parts of ethylene bis-stearamide and 1-10 parts of mineral stabilizer.
2. A method for preparing the flame retardant master batch of the environment-friendly methyl octabromoether as claimed in claim 1, which is characterized by comprising the following steps:
step 1, setting the extruder to 120-200 ℃ according to requirements;
step 2, weighing various raw materials according to the parts by weight;
step 3, adding the weighed raw materials into a high-speed mixer according to the feeding sequence of polystyrene, a stabilizer and methyl octabromoether, and mixing for 5min;
step 4, putting the mixed materials into a feeding bin;
step 5, adding the materials into a double-screw feeder for melt extrusion;
and 6, cooling the extruded sample bars through a water tank, and then granulating to obtain the finished flame-retardant master batch.
3. The environment-friendly methyl octabromoether flame-retardant master batch and the preparation method thereof as claimed in claim 2, wherein the main machine frequency of the double-screw feeder is 20-40 Hz, and the feeding frequency is 4-10 Hz.
4. The environment-friendly methyl octabromoether flame-retardant master batch and the preparation method thereof as claimed in claim 2, wherein the weight ratio of pentaerythritol stearate, ethylene bis-stearamide and mineral stabilizer is (2-10): 1.
5. The application of the environment-friendly methyl octabromoether flame-retardant master batch as claimed in claim 1, wherein the addition amount of the flame-retardant master batch in a flame-retardant XPS product is 1-5wt%.
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| CN114672104B true CN114672104B (en) | 2023-07-21 |
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Citations (5)
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| CN107236238A (en) * | 2017-07-31 | 2017-10-10 | 东莞市安拓普塑胶聚合物科技有限公司 | A kind of low-smoke and flame retardant can ceramifiable thermoplastic's polyolefin elastic composite material and its preparation method and application |
| CN109503968A (en) * | 2018-11-17 | 2019-03-22 | 山东东信新材料科技股份有限公司 | A kind of XPS fire-retardant master granule and preparation method thereof |
| CN109593281A (en) * | 2018-11-17 | 2019-04-09 | 山东东信新材料科技股份有限公司 | A kind of EPS fire-retardant master granule and preparation method thereof |
| CN109957238A (en) * | 2017-12-14 | 2019-07-02 | 上海凯赛生物技术研发中心有限公司 | A kind of thermoplastic flame-proof biology base PA56 and PA66 composite material and preparation method |
| CN113969023A (en) * | 2021-11-30 | 2022-01-25 | 山东旭锐新材有限公司 | High-content methyl octabromoether flame-retardant master batch and preparation method and application thereof |
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- 2022-04-13 CN CN202210385211.6A patent/CN114672104B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236238A (en) * | 2017-07-31 | 2017-10-10 | 东莞市安拓普塑胶聚合物科技有限公司 | A kind of low-smoke and flame retardant can ceramifiable thermoplastic's polyolefin elastic composite material and its preparation method and application |
| CN109957238A (en) * | 2017-12-14 | 2019-07-02 | 上海凯赛生物技术研发中心有限公司 | A kind of thermoplastic flame-proof biology base PA56 and PA66 composite material and preparation method |
| CN109503968A (en) * | 2018-11-17 | 2019-03-22 | 山东东信新材料科技股份有限公司 | A kind of XPS fire-retardant master granule and preparation method thereof |
| CN109593281A (en) * | 2018-11-17 | 2019-04-09 | 山东东信新材料科技股份有限公司 | A kind of EPS fire-retardant master granule and preparation method thereof |
| CN113969023A (en) * | 2021-11-30 | 2022-01-25 | 山东旭锐新材有限公司 | High-content methyl octabromoether flame-retardant master batch and preparation method and application thereof |
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