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Swell type combustion-proof glass fiber reinforced polypropylene composite material and its preparation method

A flame retardant glass fiber and flame retardant polypropylene technology is applied in the field of flame retardant glass fiber reinforced polypropylene composite materials, which can solve the problems of insufficient flame retardant performance, can not meet the needs of fields with high flame retardant requirements, etc. performance, improved compatibility and effect of interfacial bonding

Inactive Publication Date: 2006-07-26
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the previously developed long fiber and glass fiber mat reinforced polypropylene composite materials, the mechanical properties have reached a relatively high level, but its flame retardancy is still insufficient. Usually the limiting oxygen index of the material is around 19, although it can meet The flame retardant index required by general automotive parts, but it is far from meeting the needs of fields with high flame retardant requirements

Method used

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  • Swell type combustion-proof glass fiber reinforced polypropylene composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Polypropylene (Beijing Yanshan Petrochemical Company, brand K9035) 100 parts, ammonium polyphosphate (APP) (product of Jinan Taixing Fine Chemical Co., Ltd., polymerization degree greater than 1000) 18 parts, melamine (MEL) (Jinan Taixing Fine Chemical Co., Ltd. product) 12.5 parts, pentaerythritol (PER) (product of Jinan Taixing Fine Chemical Co., Ltd.) 8.5 parts, antioxidant 1010 (product of Shanghai Ciba Fine Chemical Co., Ltd.) 0.3 part, antioxidant 168 (product of Shanghai Ciba Fine Chemical Co., Ltd. ) 0.2 parts, the above raw materials were dried in an oven at 60°C for 24 hours, and after premixing, they were extruded and granulated in a twin-screw extruder with an aspect ratio of 40, a screw diameter of 30mm, and temperature control in 11 stages , the temperature of each section is as follows:

[0037] 1st stage: 130°C, 2nd stage: 150°C, 3rd stage: 175°C, 4th stage: 190°C, 5th stage: 190°C, 6th stage: 195°C, 7th stage: 195°C, 8th stage: 200°C, 9th stage: 200°C,...

Embodiment 2

[0041] In the preparation process of flame-retardant polypropylene pellets, 100 parts of polypropylene (Beijing Yanshan Petrochemical Company, brand K9035), 46 parts of APP (product of Jinan Taixing Fine Chemical Co., Ltd., polymerization degree greater than 1000), MEL (Jinan Taixing Fine Chemical Co., Ltd. product) 32 parts, PER (Jinan Taixing Fine Chemical Co., Ltd. product) 22 parts, all the other are with embodiment 1. Determination of its mechanical properties and oxygen index is shown in Table 1.

Embodiment 3

[0043] In the process of compounding with glass fibers, 7.5 parts of flame-retardant polypropylene pellets, 2 parts of glass fibers with a length of 6 mm, and the others are the same as in Example 2. Determination of its mechanical properties and oxygen index is shown in Table 1.

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Abstract

This invention discloses a composite material which is non-halogen, environment-friendly, inflatable flame-resistant, glass fiber polypropylene reinforced and method for making same. This invention compounds the inflatableaa (IFR) composed by polyammonium phosphate(APP), melamine(MEL) and pentaerythrite(PER) with polypropylene, so as to entitle polypropylene material good flame-resistant, The mechanics behaviour of the material could be reinforced largely through composition with long glass fiber, glass fiber felt and after interface modifying. This material contains no halogen constituent; it generates little smoke and smoketoxicity is small. Through controlling the content of flame-resistant in composite material, we can get polypropylene composite material whose limited oxygen index over 45 and has good mechanics behaviour. This material has good application foreground in the fields of electric, ship making, orbit and building materials, which is very sensible to expand the application range of PP.

Description

technical field [0001] The invention relates to a flame-retardant glass fiber-reinforced polypropylene composite material, in particular to a halogen-free intumescent flame-retardant glass fiber-reinforced polypropylene composite material and a preparation method thereof. technical background [0002] Polypropylene is cheap and has good comprehensive properties, and has been widely used in chemical industry, chemical fiber, construction, light industry, home appliances, packaging and other industrial sectors. However, polypropylene is a flammable material with an oxygen index of only 17.4. It also has a high calorific value of combustion, produces a large number of molten droplets, and is easy to spread flames, which limits its application to a large extent. Modification is an important means to expand its application. [0003] Adding halogenated flame retardants to polypropylene can obtain materials with better flame retardancy. Chinese patent CN00820086.6 discloses a pol...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K7/14C08J5/08B32B27/12B32B27/32C09K21/14
Inventor 周晓东陆燕红侯静强王秋峰林群芳
Owner EAST CHINA UNIV OF SCI & TECH
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