CN104829943A - Fumed-silica-containing intumescent polypropylene flame retardant and preparation method of flame retardant - Google Patents
Fumed-silica-containing intumescent polypropylene flame retardant and preparation method of flame retardant Download PDFInfo
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- CN104829943A CN104829943A CN201510262297.3A CN201510262297A CN104829943A CN 104829943 A CN104829943 A CN 104829943A CN 201510262297 A CN201510262297 A CN 201510262297A CN 104829943 A CN104829943 A CN 104829943A
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- aerosil
- fire retardant
- expanded polypropylene
- flame retardant
- silica
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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
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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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34922—Melamine; Derivatives thereof
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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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- 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)
Abstract
The invention discloses a fumed-silica-containing intumescent polypropylene flame retardant. The fumed-silica-containing intumescent polypropylene flame retardant comprises the following components in percentage by mass: 68%-77% of polypropylene resin and 23%-32% of intumescent halogen-free composite flame retardant, wherein the intumescent halogen-free composite flame retardant contains a fumed-silica-containing flame retardant synergist. The fumed-silica-containing intumescent polypropylene flame retardant is remarkable in flame retardant effect and excellent in processability, toughness and aging characteristic. After silica is added to the fumed-silica-containing intumescent polypropylene flame retardant, the transparency, strength and tenacity of the fumed-silica-containing intumescent polypropylene flame retardant are improved, and the waterproofness and the aging resistance of the fumed-silica-containing intumescent polypropylene flame retardant also are obviously improved.
Description
Technical field
The present invention relates to a kind of expanded polypropylene fire retardant containing aerosil, also relate to a kind of preparation method of the expanded polypropylene fire retardant containing aerosil.
Background technology
Many outstanding advantages such as polypropylene is little with its density, mechanical property good, resistance to chemical attack, easily processing, good heat resistance, cheap, production technique is simple are applied in many industries, and halogen-free low-smoke flame-retardant polypropylene alkene has become the high molecular fire retardant material that rate of growth is the fastest, be most widely used.At automotive plastic; electrical accessorie; the application of polypropylene flame redardant is had in the product of a lot of industry such as electronic product casing, household electrical appliance, power equipment, household; be mainly used in electric wire; electronic apparatus manufactures various inner components; protection-gear in welding electronic elements, decorative plywood etc.Also can be used for electric appliance casing, chemical vessel, many aspects such as engineer applied.Polypropylene is very easy to burning (limiting oxygen index(LOI)--LOI only has 17.4), limits its application in many aspects.In the past few decades, halogen-free expansion type flame-proof polypropylene because of cigarette few during heated combustion, low toxicity, become the focus of research without good environment friendly such as obnoxious flavoures.
At present, expansion type flame retardant is mix by containing acid source, carbon source and nitrogenous source 3 kinds of components mostly.In order to improve polypropylene flame redardant one-tenth charcoal efficiency, improve Char Residues Structure and improve layer of charcoal quality, there is synergistic effect, and found some new synergists.Some metal oxide, aluminosilicates etc. are causing everybody great interest owing to having good catalysis carbon-forming synergistic effect.Wish to develop that a kind of can to play good effect of heat insulation while being catalyzed into carbon high temperature resistant, the above-mentioned substance of low heat conductivity, to improve the flame retarding efficiency of composite flame-retardant agent.
On the other hand after with the addition of inorganic fire retarding synergist, the performances such as fire retardant material toughness, resistance to deterioration and processibility can decrease.Plastics easily produce break, the phenomenon such as albefaction.But, if do not add or add less and will inevitably damage the flame-retarding characteristic of material, the very difficult high flame retardant such by the V-0 with Underwriters Laboratories standard (Underwriters Laboratories Standard) UL94 defined and resistivity against fire.For the problems referred to above, add one and do not have influential flame retardant to seem particularly important to its performance such as toughness and aging.
Summary of the invention
An object of the present invention is to propose a kind of expanded polypropylene fire retardant containing aerosil, for adding the problems such as the reduction of goods processing characteristics, toughness and the aging caused along with inorganic fire-retarded synergist in existing fire retardant, there is provided a kind of flame retardant effect remarkable, the fire-retardant combination of processing characteristics, toughness and aging resistance excellence.
Another object of the present invention is the preparation method proposing a kind of expanded polypropylene fire retardant containing aerosil, solves the problems such as fire retardant preparation cost of the prior art is high, preparation method is complicated.
Technical scheme of the present invention is achieved in that a kind of expanded polypropylene fire retardant containing aerosil, the described expanded polypropylene fire retardant containing aerosil comprises each component of following mass percent: the acrylic resin of 68% ~ 77%, the expansion type halogen-free composite flame-retardant agent of 23% ~ 32%; Wherein said expansion type halogen-free composite flame-retardant agent comprises aerosil fire retarding synergist.Aerosil (gas phase White Carbon black) has porousness, high temperature resistant, particle diameter is very little, therefore specific surface area is large, and superficial attractive forces is strong, and surface energy is large, the aspects such as chemical purity is high, dispersing property good, thermal resistance have special performance, with its superior stability, reinforcing, thickening property and thixotropy, show unique characteristics in numerous subject and field, have the effect do not replaced.
Preferably, the ignition resistant substrate in described expansion type halogen-free composite flame-retardant agent is acrylic resin, and the mass percent that described acrylic resin accounts for described expansion type halogen-free composite flame-retardant agent is 70% ~ 75%.
Preferably, expansion type halogen-free composite flame-retardant agent by mass ratio be the ammonium polyphosphate of 10 ~ 20:5 ~ 10:3 ~ 5:0.5 ~ 5, polyvalent alcohol or its modified product, trimeric cyanamide and aerosil form.
Preferably, described ammonium polyphosphate is the molten ammonium phosphate polymer powder of high-polymerization degree, shipwreck, and the polymerization degree is 700 ~ 1500.
Preferably, described polyvalent alcohol is the alcohols containing more than three or three hydroxyls, and its general formula is CnH2n+2-x (OH) x (x >=3).
Preferably, described polyvalent alcohol is one or more in tetramethylolmethane, Xylitol, sorbyl alcohol.
Preferably, the granularity of each composition component is at 0.5 ~ 10 μm.
Preferably, by aerosil and ammonium polyphosphate, polyvalent alcohol and trimeric cyanamide are composite makes expansion type halogen-free composite flame-retardant agent, Halogenless composite fire retardant is mixed with acrylic resin, use twin screw extruder granulation, powder is crisp evenly containing the expanded polypropylene fire retardant powder of aerosil.
Beneficial effect of the present invention is: had raising by a relatively large margin to the expanded polypropylene fire retardant efficiency containing aerosil of the present invention after the aerosil interpolation of vesicular structure.The interpolation of aerosil again can thickening, toughness reinforcing, and water resistance and ageing resistance also significantly improve.Halogenide is not produced when with the addition of the burning of the expanded polypropylene fire retardant containing aerosil of aerosil, flame retardant properties has had raising by a relatively large margin compared with what do not add, time shaping finished product toughness, processing fluidity, resistance to deterioration is more un-added there has also been raising, and excellent heat resistance.
Expanded polypropylene fire retardant Be very effective containing aerosil of the present invention, processing characteristics, toughness and aging resistance are excellent.After adding silicon-dioxide in expanded polypropylene fire retardant containing aerosil resistance of the present invention, not only increase transparency, intensity, the toughness of the expanded polypropylene fire retardant containing aerosil, and expanded polypropylene fire retardant water resistance containing aerosil of the present invention and ageing resistance also significantly improve.
Embodiment
For understanding the present invention better; below by following examples, elaboration concrete is further done to the present invention; but unintelligible is limitation of the invention; for some nonessential improvement and adjustment that those skilled in the art does according to foregoing invention content, be also considered as dropping in protection scope of the present invention.
Example 1 (comparative example)
By 70g polypropylene, mix (mixing temperature 195 DEG C, mixing time 9min) two rolling on mixing roll, pull-out is laminated stand-by.
Example 2
By ammonium polyphosphate 15g, tetramethylolmethane 7g, trimeric cyanamide 5g are re-dubbed fire retardant and break into the powder of particle diameter below 10 microns, mix (mixing temperature 195 DEG C two rolling on mixing roll with 70g polypropylene, mixing time 9min), obtain flame retardant polypropylene resin.
Example 3
In the fire retardant of example 2, add the aerosil of 1g, other conditions, with example 2, obtain embodiment 3.
Embodiment 4
Make the amount of the aerosil of embodiment 3 into 3g, other conditions, with the preparation condition of embodiment 3, obtain embodiment 4.
Embodiment 5
Make the amount of the aerosil of embodiment 4 into 5g, other conditions, with the preparation condition of embodiment 4, obtain embodiment 5.
For the environmentally friendly anti-flaming polypropylene material of the one obtained by above-described embodiment, carry out the test of flame retardant properties (oxygen index, vertical combustion) and mechanical mechanics property (tensile strength, elongation at break), test structure is as shown in table 1.Stretch and undertaken by GB/T1040-1992, I pattern sample, 3.0mm is thick, draw speed 20mm/min, the mean value of six test results; Oxygen index test is undertaken by ISO4589-1984, batten size 13.0 × 6.5 × 3.0; Vertical combustion test is undertaken by GB/T2408-2008, batten size 125mm × 13.0mm × 3.0mm.
The flame retardant properties of table 1 sample and mechanical property
Test result shows: do not produce halogenide when with the addition of the burning of the expanded polypropylene fire retardant containing aerosil of aerosil, flame retardant properties, tensile strength have had raising by a relatively large margin compared with what do not add.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the expanded polypropylene fire retardant containing aerosil, it is characterized in that, the described expanded polypropylene fire retardant containing aerosil comprises each component of following mass percent: the acrylic resin of 68% ~ 77%, the expansion type halogen-free composite flame-retardant agent of 23% ~ 32%; Wherein said expansion type halogen-free composite flame-retardant agent comprises aerosil fire retarding synergist.
2. the expanded polypropylene fire retardant containing aerosil according to claim 1, it is characterized in that: the ignition resistant substrate in described expansion type halogen-free composite flame-retardant agent is acrylic resin, the mass percent that described acrylic resin accounts for described expansion type halogen-free composite flame-retardant agent is 70% ~ 75%.
3. the expanded polypropylene fire retardant containing aerosil according to claim 1, is characterized in that: expansion type halogen-free composite flame-retardant agent by mass ratio be the ammonium polyphosphate of 10 ~ 20:5 ~ 10:3 ~ 5:0.5 ~ 5, polyvalent alcohol or its modified product, trimeric cyanamide and aerosil form.
4. the expanded polypropylene fire retardant containing aerosil according to claim 3, is characterized in that: described ammonium polyphosphate is the molten ammonium phosphate polymer powder of high-polymerization degree, shipwreck, and the polymerization degree is 700 ~ 1500.
5. the expanded polypropylene fire retardant containing aerosil according to claim 3, is characterized in that: described polyvalent alcohol is the alcohols containing more than three or three hydroxyls.
6. the expanded polypropylene fire retardant containing aerosil according to claim 3, is characterized in that: described polyvalent alcohol is one or more in tetramethylolmethane, Xylitol, sorbyl alcohol.
7. the expanded polypropylene fire retardant containing aerosil according to claim 1-6, is characterized in that: the granularity of each composition component is at 0.5 ~ 10 μm.
8. one kind as arbitrary in claim 3-6 as described in the preparation method of expanded polypropylene fire retardant containing aerosil, it is characterized in that: by aerosil and ammonium polyphosphate, polyvalent alcohol and trimeric cyanamide are composite makes expansion type halogen-free composite flame-retardant agent, Halogenless composite fire retardant is mixed with acrylic resin, use twin screw extruder granulation, powder is crisp evenly containing the expanded polypropylene fire retardant powder of aerosil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510262297.3A CN104829943A (en) | 2015-05-21 | 2015-05-21 | Fumed-silica-containing intumescent polypropylene flame retardant and preparation method of flame retardant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510262297.3A CN104829943A (en) | 2015-05-21 | 2015-05-21 | Fumed-silica-containing intumescent polypropylene flame retardant and preparation method of flame retardant |
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| CN104829943A true CN104829943A (en) | 2015-08-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111002672A (en) * | 2019-12-13 | 2020-04-14 | 成都新柯力化工科技有限公司 | Plastic sheet for packaging frozen food and preparation method thereof |
| CN114181457A (en) * | 2021-12-14 | 2022-03-15 | 安庆会通新材料有限公司 | Halogen-free flame-retardant master batch, preparation method thereof and reinforced polypropylene composite material |
| CN114181443A (en) * | 2021-11-11 | 2022-03-15 | 金发科技股份有限公司 | Polyolefin composition and application thereof |
-
2015
- 2015-05-21 CN CN201510262297.3A patent/CN104829943A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111002672A (en) * | 2019-12-13 | 2020-04-14 | 成都新柯力化工科技有限公司 | Plastic sheet for packaging frozen food and preparation method thereof |
| CN114181443A (en) * | 2021-11-11 | 2022-03-15 | 金发科技股份有限公司 | Polyolefin composition and application thereof |
| CN114181443B (en) * | 2021-11-11 | 2024-04-19 | 金发科技股份有限公司 | Polyolefin composition and application thereof |
| CN114181457A (en) * | 2021-12-14 | 2022-03-15 | 安庆会通新材料有限公司 | Halogen-free flame-retardant master batch, preparation method thereof and reinforced polypropylene composite material |
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Application publication date: 20150812 |