Fire-retarding and low-temperature resistant polypropylene material, preparation method thereof and use thereof

A polypropylene material, low temperature resistant technology, applied in the field of flame retardant plastics, can solve the problems of changing the comprehensive properties of the material, reducing the tensile elongation of the material, etc., to achieve excellent physical properties, good flame retardant effect, good compatibility. Effect

Active Publication Date: 2011-02-16
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above invention realizes the flame retardancy and low temperature resistance of polyolefin, it greatly reduces the tensile elongation of the material and changes the overall performance of the material.

Method used

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  • Fire-retarding and low-temperature resistant polypropylene material, preparation method thereof and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 75kg of ethylene block copolymerized polypropylene (Korean Hyosung, J740), with a melt index of 25.0g / 10min, 15kg of microencapsulated ammonium polyphosphate (Sean Chemical, FR-CH-3), and 10kg of TPO thermoplastic elastomer (Mitsubishi Chemical, THERMORUN3981B / N), the rubber content is 40% and 0.2kg of 1010 (Swiss Ciba), through a high-speed mixer, high-speed mixing for 30 seconds to make it premixed evenly, and then pass through the double-layer heating zone with multi-stage heating zone Screw extruder, uniformly dispersed, extruded and granulated to produce flame-retardant and low-temperature resistant polypropylene materials. The temperature of the twin-screw extruder is: 160-165°C for the first zone, 165-170°C for the second zone, 170-175°C for the third zone, 175-180°C for the fourth zone, 180-185°C for the fifth zone, 180-185°C for the sixth zone, The seventh zone is 175-180°C, the eighth zone is 170-175°C, the ninth zone is 165-170°C, the tenth zone is 165-170°C,...

Embodiment 2

[0036] Raw materials: 50 kg of block copolymer polypropylene with a melt index of 40.0 g / 10 min, 25 kg of microencapsulated ammonium polyphosphate, 25 kg of TPO thermoplastic elastomer with a rubber content of 50% and 0.5 kg of B215 (Ciba, Switzerland).

[0037] Each raw material model is purchased from the same manufacturer as in Example 1, and the preparation method and testing method are as in Example 1.

Embodiment 3

[0039] Raw materials: 60 kg of block copolymer polypropylene with a melt index of 5.0 g / 10 min, 20 kg of microencapsulated ammonium polyphosphate, 20 kg of TPO thermoplastic elastomer with a rubber content of 25% and 0.3 kg of 168 (Ciba, Switzerland).

[0040] Each raw material model is purchased from the same manufacturer as in Example 1, and the preparation method and testing method are as in Example 1.

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Abstract

The invention discloses a fire-retarding and low-temperature resistant polypropylene material, a preparation method thereof and use thereof. The material consists of 50 to 75 weight parts of co-polypropylene, 15 to 25 weight parts of fire retardant, 10 to 25 weight parts of thermoplastic elastomer and 0.2 to 0.5 weight part of antioxygen. The preparation method comprises: mixing the components in a high-speed mixer; feeding the mixture in an double-screw extrude equipped with multistage heating zones; and uniformly dispersing, extruding to make grains, and obtaining the fire-retarding and low-temperature resistant polypropylene material. The fire resistance of polypropylene material reaches UL94-3.2mm V0, the polypropylene material can bear a temperature of -20DEG C, the tensile strength of the polypropylene material is over 18MPa, the tensile elongation of the polypropylene material is over 200 percent, and the bending strength of the polypropylene material is not less than 22MPa. The fire-retarding and low-temperature resistant polypropylene material can be used for making automobile safety cell, control wire twisted sleeve, various outdoor electric wire protective sleeves and the like.

Description

technical field [0001] The invention relates to flame-retardant plastics, in particular to a flame-retardant and low-temperature resistant polypropylene material and its preparation method and application. Background technique [0002] Polypropylene (PP) has the advantages of low density, high heat resistance, rigidity and hardness, excellent processing performance, non-toxic, odorless and good gloss, so it is widely used in various fields. However, polypropylene itself is not flame retardant, and it is brittle at low temperature, which limits the application of polypropylene in products with such requirements. [0003] Publication No. CN 1134435A mentioned in the patent of invention that by adding a large amount of surface-treated magnesium hydroxide to polyolefin and adding an appropriate amount of low-temperature resistance improver and adding a small amount of modified magnesium hydroxide and adding a certain amount of resistance Flame retardant and low temperature resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/235C08K13/06C08K3/32H01B7/28B29B9/06C08L23/00C08K5/13C08K9/10H01B7/17C08L53/00B29C47/92H01B7/295C08K5/524B29C48/92
CPCB29C48/04B29C48/875B29C48/92B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 周开德谢怀兴徐伟诸泉蒋文真
Owner 合诚技术股份有限公司
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