CN112920482A - Preparation method of modified inorganic material flame-retardant HDPE - Google Patents
Preparation method of modified inorganic material flame-retardant HDPE Download PDFInfo
- Publication number
- CN112920482A CN112920482A CN201911231264.7A CN201911231264A CN112920482A CN 112920482 A CN112920482 A CN 112920482A CN 201911231264 A CN201911231264 A CN 201911231264A CN 112920482 A CN112920482 A CN 112920482A
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- Prior art keywords
- inorganic material
- modified inorganic
- flame
- hdpe
- retardant
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
- C08K3/02—Elements
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- 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
- C08K3/02—Elements
- C08K2003/026—Phosphorus
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Fireproofing Substances (AREA)
Abstract
The invention relates to a preparation method of modified inorganic material flame-retardant HDPE in the technical field of high polymer materials. The flame-retardant HDPE comprises the following components in percentage by weight: 4 to 12 percent of modified inorganic material and 4 to 15 percent of microcapsule red phosphorus; and the flame-retardant component is subjected to melt blending and extrusion granulation to obtain the modified inorganic material flame-retardant HDPE product. Due to the synergistic effect of the microcapsule red phosphorus and the modified inorganic material, the flame-retardant HDPE prepared by the invention can achieve V-0 level of vertical combustion, and has little influence on mechanical properties.
Description
Technical Field
The present invention relates to the preparation of flame retardant HDPE. In particular to a preparation method of inorganic material flame-retardant HDPE.
Background
HDPE is the most widely used general plastic, and is applied to important production and living goods such as pipes, wires and cables, injection products and the like due to good mechanical properties, dielectric properties, heat and cold resistance and chemical resistance. The use of various flame retardants has been widely studied because of their poor flame retardancy, but their L0I is only about 23%, and a large amount of combustible droplets are generated during combustion, so that they must be modified for flame retardancy in order to have a wider range of applications.
Disclosure of Invention
The invention aims to provide a modified inorganic material flame-retardant HDPE, aiming at overcoming the characteristic of poor combustion performance of HDPE, and microcapsule red phosphorus is added to form a synergistic effect with the modified inorganic material, so that the vertical combustion of the flame-retardant HDPE can reach V-0 level.
The invention also aims to provide a preparation method of the modified inorganic material flame-retardant HDPE.
The technical solution for realizing the purpose of the invention is as follows: firstly, modifying layered magnesium aluminum hydroxide, then blending and extruding the modified layered magnesium aluminum hydroxide, microcapsule red phosphorus and HDPE according to a certain proportion to obtain a product, wherein the method comprises the following steps:
(1) weighing Mg (NO) with a certain molar ratio3)2·6H2O and Al (NO)3)3·9H2Dissolving O in 1L of deionized water to prepare a mixed salt solution with the Mg/Al molar ratio of 1-3, pouring the mixed salt solution into a three-neck flask, violently stirring, adjusting the pH value, and reacting for 1-3 hours; adding 100 mL of 1.6 mol/L sodium stearate solution, continuously stirring for 1-3 h, aging the obtained slurry in 80 ℃ water bath for 24h, centrifugally washing for 5 times by deionized water, drying at 80 ℃ for 24h, and crushing to obtain the modified inorganic material;
(2) the modified inorganic material, the microcapsule red phosphorus and the HDPE aggregate are respectively weighed according to a certain proportion, dried, then melted, blended, extruded and granulated to obtain the modified inorganic material flame-retardant HDPE product.
Compared with the prior art, the invention has the advantages that: the microcapsule red phosphorus and the modified layered magnesium aluminum hydroxide form a synergistic effect, so that the vertical combustion of the flame-retardant PA6 can reach V-0 level, and the influence on the mechanical property is little.
Detailed Description
Example 1
(1) Weighing 0.2 mol/L Mg (NO)3)2·6H2O、0.2 mol/L Al(NO3)3·9H2Dissolving O in 1L of deionized water to prepare a mixed salt solution with the Mg/Al molar ratio of 1, pouring the mixed salt solution into a three-neck flask, and violently stirring to adjust the pH value to 10-11. After reacting for 1h, adding 100 mL of 1.6 mol/L sodium stearate solution, continuing stirring for 2h, aging the obtained slurry in 70 ℃ water bath for 18h, centrifugally washing for 5 times by deionized water, drying for 24h at 70 ℃, and crushing to obtain the modified inorganic material;
(2) respectively weighing 1000 g of PA6, 50 g of modified layered magnesium aluminum hydroxide and 50 g of microcapsule red phosphorus, and drying; then melt blending, extruding and granulating to obtain the modified inorganic material flame-retardant HDPE product.
Example 2
(1) Weighing 0.4 mol/L Mg (NO)3)2·6H2O、0.2 mol/L Al(NO3)3·9H2Dissolving O in 1L of deionized water to prepare a mixed salt solution with the Mg/Al molar ratio of 2, pouring the mixed salt solution into a three-neck flask, violently stirring, and adjusting the pH value to 10-11. After reacting for 2h, adding 100 mL of 1.6 mol/L sodium stearate solution, continuing stirring for 1h, aging the obtained slurry in 70 ℃ water bath for 18h, centrifugally washing for 5 times by deionized water, drying for 24h at 70 ℃, and crushing to obtain the modified inorganic material.
(2) Respectively weighing 800 g of PA6, 120 g of modified inorganic material and 100 g of microcapsule red phosphorus, and drying; then melt blending, extruding and granulating to obtain the modified inorganic material flame-retardant HDPE product.
Example 3
(1) Weighing 0.6 mol/L Mg (NO)3)2·6H2O、0.2 mol/L Al(NO3)3·9H2Dissolving O in 1L of deionized water to prepare a mixed salt solution with the Mg/Al molar ratio of 3, pouring the mixed salt solution into a three-neck flask, violently stirring, and adjusting the pH value to 11-12. After 3 hours of reaction, 100 mL of a 1.6 mol/L solution of sodium stearate was added. And continuously stirring for 1h, aging the obtained slurry in a water bath at 70 ℃ for 18h, centrifugally washing the slurry for 5 times by using deionized water, drying the slurry for 24h at 70 ℃, and crushing the dried slurry to obtain the modified inorganic material.
(2) Respectively weighing 1000 g of PA6, 90 g of modified layered magnesium aluminum hydroxide and 90 g of microcapsule red phosphorus, and drying; then melt blending, extruding and granulating to obtain the modified inorganic material flame-retardant HDPE product.
Although the present invention has been described in detail with reference to the preferred embodiments, it is not to be construed as limiting the invention thereto. Various modifications and alterations may be made by those skilled in the art without departing from the spirit and scope of the invention. The scope of the invention should therefore be considered as defined in the appended claims.
Claims (1)
1. A preparation method of modified inorganic material flame-retardant HDPE is characterized by comprising the following preparation steps:
(1) weighing Mg (NO) with a certain molar ratio3)2·6H2O and Al (NO)3)3·9H2Dissolving O in 1L of deionized water to prepare a mixed salt solution with the Mg/Al molar ratio of 1-3, pouring the mixed salt solution into a three-neck flask, violently stirring, adjusting the pH value, and reacting for 1-3 hours; adding 100 mL of 1.6 mol/L sodium stearate solution, continuously stirring for 1-3 h, aging the obtained slurry in 80 ℃ water bath for 24h, centrifugally washing for 5 times by deionized water, drying at 80 ℃ for 24h, and crushing to obtain the modified inorganic material;
(2) the modified inorganic material, the microcapsule red phosphorus and the HDPE aggregate are respectively weighed according to a certain proportion, dried, then melted, blended, extruded and granulated to obtain the modified inorganic material flame-retardant HDPE product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911231264.7A CN112920482A (en) | 2019-12-05 | 2019-12-05 | Preparation method of modified inorganic material flame-retardant HDPE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911231264.7A CN112920482A (en) | 2019-12-05 | 2019-12-05 | Preparation method of modified inorganic material flame-retardant HDPE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112920482A true CN112920482A (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911231264.7A Pending CN112920482A (en) | 2019-12-05 | 2019-12-05 | Preparation method of modified inorganic material flame-retardant HDPE |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112920482A (en) |
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2019
- 2019-12-05 CN CN201911231264.7A patent/CN112920482A/en active Pending
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Application publication date: 20210608 |