CN102304250B - High-melt-index halogen-free flame-retarding polypropylene and preparation method thereof - Google Patents
High-melt-index halogen-free flame-retarding polypropylene and preparation method thereof Download PDFInfo
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- CN102304250B CN102304250B CN201110263574.4A CN201110263574A CN102304250B CN 102304250 B CN102304250 B CN 102304250B CN 201110263574 A CN201110263574 A CN 201110263574A CN 102304250 B CN102304250 B CN 102304250B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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Abstract
The invention relates to high-melt-index halogen-free flame-retarding polypropylene and a preparation method thereof. The composite material comprises the following raw materials in percentage by weight: 50 to 75 percent of polypropylene (PP), 10 to 30 percent of ammonium polyphosphate (APP) flame retardant, 5 to 15 percent of pentaerythritol (PER) flame retardant, 5 to 15 percent of melamine cyanurate (MCA) flame retardant, 1 to 10 percent of imvite, 0.4 percent of antioxygen and 0.3 percent of lubricating agent. The preparation method comprises: weighing raw materials according to a weight ratio; mixing all raw materials in a high-speed mixer for 2 to 5 minutes; discharging; and filling uniformly mixed raw material in to a screw extruder for extrusion and granulation. Compared with the prior art, the high-melt-index halogen-free flame-retarding polypropylene has high mechanical performance, and particularly the melt index of the high-melt-index halogen-free flame-retarding polypropylene is greatly improved; and compared with the common halogen-free flame-retarding PP, the melt index of the high-melt-index halogen-free flame-retarding polypropylene is increased by more than100 percent. The high-melt-index halogen-free flame-retarding polypropylene is suitable to make complex membranes with high surface requirements and flame-retarding requirements, and can be widely used in fields of electronic appliances, home appliances and the like.
Description
Technical field
The present invention relates to a kind of preparation method of high molten finger halogen-free polypropylene flame redardant, this material can be made the production unit with high surface requirements and halogen-free flameproof requirement, in fields such as electric, household electrical appliances, has very wide application.
Background technology
PP material is widely used because its density is little, cost performance is high, and fire-retardant PP is because of factors such as fire retardant addition are large, greatly reduces the melting index of product, causes on a lot of baroque Injection moulded parts and easily to produce the defects such as current mark and injection moulding be discontented.At present, about improving the molten research referring to of polypropylene flame redardant seldom, do not have effective method to improve mobility both at home and abroad yet.
Summary of the invention
Object of the present invention is exactly to provide a kind of melting index that can greatly improve halogen-free flameproof PP in order to overcome the defect that above-mentioned prior art exists, and improves molten halogen-free polypropylene flame redardant and preparation method thereof that refers to of height of the defects such as the current mark of injection-molded item and injection moulding be discontented.
The object of the invention is to be achieved through the following technical solutions:
The present invention relates to a kind of high molten finger halogen-free polypropylene flame redardant, is to be made by the raw material of following weight proportion:
PP 50～75%，
Fire retardant APP 10～30%,
Fire retardant PER 5～15%,
Fire retardant MCA 5～15%,
Polynite 1～10%,
Oxidation inhibitor 0.4%,
Lubricant 0.3%.
Preferably, described PP is copolymerization PP, and melting index is 25.
Preferably, described fire retardant APP is ammonium polyphosphate, and molecular weight is greater than 1000; Described fire retardant PER is tetramethylolmethane; Described fire retardant MCA is melamine cyanurate salt.
Preferably, the interlamellar spacing of described polynite is 0.5nm.
Preferably, described oxidation inhibitor is the compound system of Hinered phenols antioxidant and phosphite ester kind antioxidant.
Preferably, described oxidation inhibitor is that mass ratio is the phosphite ester kind antioxidant 168 of 1:1, the compound system of Hinered phenols antioxidant 1010.
Preferably, described lubricant is modification ethylene bis-fatty acid amides TAF.
The invention still further relates to the molten preparation method who refers to halogen-free polypropylene flame redardant of a kind of above-mentioned height, comprise the steps:
(1) by described weight percent content, weigh described raw material;
(2) all raw materials are put into high-speed mixer and mixing 2～5 minutes, discharging;
(3) mixed raw material is put into screw machine extruding pelletization, the rotating speed of screw machine is 180～600 revs/min, and temperature is 150 ℃～200 ℃.
Compared with prior art, material prepared by the inventive method has high workability and good flame retardant properties, can make and have the every field that production unit, electronic apparatus, household electrical appliances etc. have fire-retardant and high surface requirements.
Embodiment
Below embodiments of the invention are elaborated: the present embodiment is implemented take technical solution of the present invention under prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
embodiment 1～5
In the molten finger of the height halogen-free polypropylene flame redardant of embodiment 1～5, each raw material and weight percent content thereof are as shown in table 1.Wherein, PP is copolymerization PP, and melting index is 25; Fire retardant APP is ammonium polyphosphate, and molecular weight is greater than 1000; Described fire retardant PER is tetramethylolmethane; Described fire retardant MCA is melamine cyanurate salt; The interlamellar spacing of polynite (MMT) is 0.5nm; Oxidation inhibitor is that mass ratio is the phosphite ester kind antioxidant 168 of 1:1, the compound system of Hinered phenols antioxidant 1010; Lubricant is modification ethylene bis-fatty acid amides TAF.
Table 1
Raw material in embodiment 1 is put into high-speed mixer and mixing 3 minutes in proportion, then use screw extrusion press extruding pelletization, obtain the high molten halogen-free polypropylene flame redardant that refers to, its processing temperature is at 180 ℃, and screw rod revolution is at 400 revs/min.
Raw material in embodiment 2,3 is put into high-speed mixer and mixing 2 minutes in proportion, then use screw extrusion press extruding pelletization, obtain respectively the molten halogen-free polypropylene flame redardant that refers to of corresponding height, its processing temperature is at 150 ℃, and screw rod revolution is at 180 revs/min.
Raw material in embodiment 4,5 is put into high-speed mixer and mixing 5 minutes in proportion, then use screw extrusion press extruding pelletization, obtain respectively the molten halogen-free polypropylene flame redardant that refers to of corresponding height, its processing temperature is at 200 ℃, and screw rod revolution is at 600 revs/min.
embodiment 6, performance test
The molten finger of the height halogen-free polypropylene flame redardant sample that above-described embodiment 1～5 is made carries out performance test contrast, and mechanical property is tested with ASTM, and flame retardant properties is pressed UL-94 standard testing.Result is as shown in table 2.
Table 2
As shown in Table 2, height that embodiment 1～5 makes is molten refers to that halogen-free polypropylene flame redardant has the UL-94 flame retardant rating that good mechanical property and higher melting index and grade are V0, has high workability and good flame retardant properties; Be applicable to make and there is the every field that production unit, electronic apparatus, household electrical appliances etc. have fire-retardant and high surface requirements.
Claims (3)
1. a high molten finger halogen-free polypropylene flame redardant, is characterized in that, is to be made by the raw material of following weight proportion:
Described fire retardant APP is ammonium polyphosphate, and molecular weight is greater than 1000; Described fire retardant PER is tetramethylolmethane; Described fire retardant MCA is melamine cyanurate salt; The interlamellar spacing of described polynite is 0.5nm;
Described oxidation inhibitor is that mass ratio is the phosphite ester kind antioxidant 168 of 1:1, the compound system of Hinered phenols antioxidant 1010; Described lubricant is modification ethylene bis-fatty acid amides TAF.
2. the molten halogen-free polypropylene flame redardant that refers to of height according to claim 1, is characterized in that, described PP is copolymerization PP, and melting index is 25.
3. a preparation method for high molten finger halogen-free polypropylene flame redardant as claimed in claim 1, is characterized in that, comprises the steps:
(1) by described weight percent content, weigh described raw material;
(2) all raw materials are put into high-speed mixer and mixing 2～5 minutes, discharging;
(3) mixed raw material is put into screw machine extruding pelletization, the rotating speed of screw machine is 180～600 revs/min, and temperature is 150 ℃～200 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110263574.4A CN102304250B (en) | 2011-09-07 | 2011-09-07 | High-melt-index halogen-free flame-retarding polypropylene and preparation method thereof |
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| CN201110263574.4A CN102304250B (en) | 2011-09-07 | 2011-09-07 | High-melt-index halogen-free flame-retarding polypropylene and preparation method thereof |
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| CN102304250A CN102304250A (en) | 2012-01-04 |
| CN102304250B true CN102304250B (en) | 2014-04-09 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102643477A (en) * | 2012-02-13 | 2012-08-22 | 江门市道生工程塑料有限公司 | Environment-friendly flame-retardant polypropylene composite and manufacturing method thereof |
| CN102719022B (en) * | 2012-07-06 | 2015-06-03 | 上海日之升新技术发展有限公司 | Anti-aging halogen-free flame retardant polypropylene composite material and preparation method thereof |
| CN102702612B (en) * | 2012-07-06 | 2015-06-03 | 上海日之升新技术发展有限公司 | High-flow precipitation-resistant halogen-free flame-retardant polypropylene composite material and preparation method thereof |
| CN105061887B (en) * | 2015-07-17 | 2017-06-13 | 江苏理工学院 | Halogen-free flame-retardant polypropylene material and preparation method thereof |
| CN109810415B (en) * | 2019-01-29 | 2021-05-04 | 青岛科技大学 | Intumescent flame retardant taking pentaerythritol modified melamine formaldehyde resin/piperazine pyrophosphate compound as char forming agent |
| CN112708208B (en) * | 2020-12-23 | 2023-07-11 | 成都金发科技新材料有限公司 | Polypropylene composite material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928430A (en) * | 2010-10-14 | 2010-12-29 | 北京东方绿达科技发展有限责任公司 | Novel flame redundant material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101928430A (en) * | 2010-10-14 | 2010-12-29 | 北京东方绿达科技发展有限责任公司 | Novel flame redundant material and preparation method thereof |
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