Halogen-free flame retardant polypropylene composition

A flame-retardant polypropylene and composition technology, applied in the field of polypropylene composition, can solve problems such as processing difficulties, achieve the effects of easy demolding, avoid migration, and improve demolding and surface quality

Active Publication Date: 2013-06-19
浙江通力新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a halogen-free flame-retardant polypropylene composi

Method used

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  • Halogen-free flame retardant polypropylene composition
  • Halogen-free flame retardant polypropylene composition
  • Halogen-free flame retardant polypropylene composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Weigh polypropylene resin S1003, magnesium hydroxide MAGNIFINH-5IV, pentaerythritol, polyester modified polydimethylsiloxane respectively according to the ratio shown in Table 2 H-Si6440P, talcum powder 8860, elastomer Engage8100, compatibilizer GPM200AL and black masterbatch are pre-mixed uniformly with a high-speed mixing and stirring device at room temperature, and the mixture is quantitatively transported from the main hopper to the main feed of the co-rotating twin-screw extruder In the feed port, melt extrusion is carried out, the extrusion temperature is 220°C, and the rotation speed is 300rpm. After the extruded strands are cooled in a water tank, they are cut into pellets with a length of about 3mm by a pelletizer. After the pellets are dried at 120°C for 6 hours, Injection molded into a standard sample bar with an injection molding machine, and carried out the determination of UL94, CTI (V), scratch resistance and migration resistance, the results are shown in...

Embodiment 2

[0091] Weigh polypropylene resin S1003, polypropylene resin K1003, magnesium hydroxide MAGNIFINH-5IV, dipentaerythritol, tripentaerythritol, and polyolefin modified polydimethylsiloxane masterbatches according to the proportions shown in Table 2. FR100 and black masterbatch are pre-mixed uniformly with a high-speed mixing and stirring device at room temperature, and the mixture is quantitatively transported from the main hopper to the main feeding port of the co-rotating twin-screw extruder, and the glass fiber ER13-2000-910 is quantitatively fed through the side Introduce and carry out melt extrusion, the extrusion temperature is 220°C, the speed is 300rpm, the extruded strands are cooled in a water tank, and then cut into pellets with a length of about 3mm by a pelletizer. After the pellets are dried at 120°C for 6 hours, use The injection molding machine was injected into standard strips, and the measurements of UL94, CTI(V), scratch resistance and migration resistance were...

Embodiment 3

[0093] Weigh polypropylene resin K1003 and polyester modified polydimethylsiloxane respectively according to the ratio shown in Table 2 H-Si6440P, polyether modified polysiloxane 6875, tripentaerythritol, magnesium hydroxide MAGNIFINH-5IV, talcum powder 8860, elastomer Engage8100, compatibilizer GPM200AL and black masterbatch are pre-mixed uniformly with a high-speed mixing device at room temperature, and the mixture is quantitatively transported from the main hopper to the same Melt extrusion into the main feeding port of the twin-screw extruder, the extrusion temperature is 220°C, the rotation speed is 300rpm, the extruded strands are cooled in a water tank, and then cut into pellets with a length of about 3mm by a pelletizer. After drying at 120°C for 6 hours, it was molded into a standard sample with an injection molding machine, and tested for UL94, CTI(V), scratch resistance and migration resistance. The results are shown in Table 2.

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Abstract

The invention provides a halogen-free flame retardant polypropylene composition. The composition comprises the following components: 20-80wt% of at least one polypropylene (A), 1-10wt% of at least one organic group modified polydimethylsiloxane (B), 1-10wt% of at least one compound (C) with a structure shown in formulas (I), (II) and/or (III), and 5-60wt% of ultrafine magnesium hydroxide with the particle size D50 being less than or equal to 2 micrometers. By utilizing the composition, the processing difficulty under high filling is reduced, and common silicone oil and pentaerythritol are prevented from migration; and moreover, the composition has excellent flame retardance, is easy to demould and has good surface scratch resistance and excellent combined multiple performances.

Description

technical field [0001] The invention relates to the field of polypropylene compositions, in particular to a halogen-free flame-retardant polypropylene composition. Background technique [0002] The traditional flame retardant modification method of polypropylene is to add halogen-containing flame retardants (such as decabromodiphenyl ether, hexabromocyclododecane, octabromoether, etc.), but the flame retardant made by adding halogen-containing flame retardants PP, while burning to play its role, will release smoke and corrosive gases that pollute the environment and endanger human health. These corrosive gases damage buildings and equipment even more than the fire itself. When the fuel is burned or thermally cracked, toxic carcinogens polybrominated dibenzodioxane and polybrominated dibenzofuran will be formed. Therefore, many flame retardant users are now cautious or even unwelcome to halogen-based flame retardants, and are actively committed to the development of halogen-...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L83/04C08L83/06C08K13/04C08K5/053C08K5/06C08K3/22C08K7/14C08K7/06C08K7/10C08K3/04
Inventor 王相友
Owner 浙江通力新材料科技股份有限公司
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