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High heat resistant glass fiber enhanced halogen-free flame retardant polypropylene and preparation method thereof

A technology of flame retardant polypropylene and production method, which is applied in the field of high heat-resistant glass fiber reinforced halogen-free flame retardant polypropylene, can solve problems such as unsatisfactory long-term effects, and achieves easy control of glass fiber content and long-term high temperature thermal oxidation resistance. High performance and flame retardant effect

Active Publication Date: 2012-07-18
杭州金州高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many glass fiber reinforced materials in the past only meet the short-term needs of ordinary environments, but the long-term effects are often unable to meet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 5.0 parts of maleic anhydride grafted polypropylene, 30 parts of flame retardant melamine polyphosphate, 1.0 part of antioxidant 1010, 1.0 part of antioxidant 1330, 1.0 part of antioxidant DSTP, 1.0 part of antioxidant 168, 0.2 parts of plasticizer diisobutyl phthalate and 4.0 parts of processing aid N,N'-ethylene bis-stearamide were added to the high mixer in turn, mixed thoroughly for 5 minutes, and then the mixture and copolymer 50 parts of propylene and / or homopolypropylene are fed from the main feeding port, and at the same time, 20 parts of the treated short glass fibers are fed from the side feeding port. Sliced ​​strips. The melting temperature is set as follows: the first stage is 200°C, the second stage is 210°C, the third stage is 210°C, the fourth stage is 220°C, the fifth stage is 220°C, the sixth stage is 210°C, the seventh stage is 210°C, and the third stage is 210°C. The eighth stage is 230°C, the ninth stage is 230°C, the tenth stage is 225°C, and the ...

Embodiment 2

[0055] 3.0 parts of maleic anhydride grafted polypropylene, 10 parts of flame retardant JLS-PNP series, 10 parts of flame retardant phosphate ester, 0.5 part of antioxidant 1010, 0.5 part of antioxidant 1076, 0.5 part of antioxidant 1330, Antioxidant 168 0.5 part, antioxidant DSTDP 0.5 part, plasticizer dibutyl phthalate 0.5 part, plasticizer epoxy butyl oleate 0.5 part, processing aid polyethylene wax 0.5 part, processing aid 0.5 part of oxidized polyethylene wax and 1 part of processing aid palmitic acid were added to the high mixer in turn, after fully mixing for 1 min, then the mixture and 60 parts of copolymerized polypropylene and / or homopolypropylene were fed from the main feeding port. At the same time, 10 parts of the processed short glass fibers are fed from the side feeding port, and they are melted, blended and extruded together in the extruder, and the strands are cut into pellets. After cooling with water, dry the moisture on the surface of the strips, and then c...

Embodiment 3

[0070] 10 parts of polypropylene grafted with glycidyl acrylate, 40 parts of flame retardant melamine polyphosphate, 0.5 part of antioxidant 1010, 0.5 part of plasticizer epoxy butyl oleate and processing aid Indonesian stearic acid 0.5 part is added to the high mixer in turn, after fully mixing for 10 minutes, then the mixture and copolymerized polypropylene and / or homopolypropylene, 40 parts are fed from the main feeding port, and the treated short glass fiber is added at the same time. 30 parts are fed from the side feeding port, melted, blended and extruded together in the extruder, and the strands are cut into pellets. The melting temperature is set as follows: the first stage is 200°C, the second stage is 210°C, the third stage is 210°C, the fourth stage is 220°C, the fifth stage is 220°C, the sixth stage is 210°C, the seventh stage is 210°C, and the third stage is 210°C. The eighth stage is 230°C, the ninth stage is 230°C, the tenth stage is 225°C, and the head temperat...

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Abstract

The invention discloses high heat resistant glass fiber enhanced halogen-free flame retardant polypropylene and a preparation method of the high heat resistant glass fiber enhanced halogen-free flame retardant polypropylene, belonging to the technical field of high molecular materials. The high heat resistant glass fiber enhanced halogen-free flame retardant polypropylene comprises a polypropylene copolymer and / or a polypropylene homopolymer, a compatilizer, a short glass fiber, a flame retardant, an antioxidant, a plasticizer and a processing additive. The preparation method of the high heat resistant glass fiber enhanced halogen-free flame retardant polypropylene comprises the following steps: 1) weighing the raw materials; 2) adding the compatilizer, the flame retardant, the antioxidant, the plasticizer and the processing additive into a high-speed mixer according to parts by weight in sequence, fully mixing for 1-10 min, then adding the mixed material into a hopper of an extruder; and 3) feeding the polypropylene copolymer and / or the polypropylene homopolymer and the mixture in the step 2) into a main feeding mouth according to parts by weight respectively, feeding the short glass fiber into a side feeding mouth according to parts by weight, melting, blending and extruding in the extruder, drawing and pelletizing. According to the invention, the prepared polypropylene has excellent mechanical property, long-acting high temperature resistance and thermal oxidation performance and high flame retardance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high heat-resistant glass fiber reinforced halogen-free flame-retardant polypropylene and a production method thereof. Background technique [0002] As a general-purpose resin material, polypropylene material has been widely used in all walks of life. It has excellent chemical resistance, corrosion resistance, good mechanical properties and excellent processing performance, and has become the first choice of many modification manufacturers. There are many modified polypropylene materials on the market, such as talc filled, calcium carbonate filled, glass fiber reinforced and other polypropylene materials. As a general engineering plastic, glass fiber reinforced polypropylene has high strength, high rigidity, high toughness, low density, low warpage creep, and excellent dynamic fatigue resistance. Because of its high cost performance, it is widely used in a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L51/06C08K13/04C08K7/14B29B9/06B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 王晓群陈家锋黄柯伟
Owner 杭州金州高分子科技有限公司
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