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Alkali-free glass fiber reinforcing modified polypropylene composite material and preparing method thereof

An alkali-free glass fiber and composite material technology, applied in the field of modified materials, can solve the problems of poor material fluidity, floating fibers on the surface, and low heat-resistant temperature, so as to improve processing fluidity, surface smoothness, and interface bonding Effect

Inactive Publication Date: 2016-04-20
ZHEJIANG PINNUO NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In ordinary glass fiber-reinforced modified polypropylene (PP) materials, due to the material polarity compatibility between PP materials and alkali-free glass fibers, surface floating fibers, poor material fluidity, and product Phenomena such as partial warping and deformation
Compared with glass fiber-reinforced modified polypropylene composites, mineral-filled modified polypropylene composites have fine and smooth surfaces and good fluidity, but have problems such as large product shrinkage and low heat-resistant temperature

Method used

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  • Alkali-free glass fiber reinforcing modified polypropylene composite material and preparing method thereof
  • Alkali-free glass fiber reinforcing modified polypropylene composite material and preparing method thereof
  • Alkali-free glass fiber reinforcing modified polypropylene composite material and preparing method thereof

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preparation example Construction

[0036] The preparation method of the described alkali-free glass fiber reinforced modified polypropylene composite material is mainly characterized in that the preparation method comprises the following steps:

[0037] Step (1): Put homopolymerized PP resin, alkali-free glass fiber, talcum powder, compatibilizer, antioxidant, anti-floating fiber agent and lubricant into a high-speed mixer and mix for 2 to 5 minutes before discharging.

[0038] Step (2): Put the material discharged in step (1) into the main feed inlet of the twin-screw extruder at a temperature of 180-220°C and a screw speed of 350-400 RPM, and undergo melt-extruded alkali-free glass fiber reinforcement modification Polypropylene composite.

[0039] Obtain following embodiment according to above-mentioned raw material:

Embodiment 1

[0041] Adopt the raw material of following weight portion proportioning:

[0042]

[0043] Put the homopolymerized PP resin, compatibilizer, antioxidant, anti-floating fiber agent, and lubricant into the high mixer according to the above mass parts and mix them for 2 to 5 minutes, then the mixed materials are passed through the twin-screw extruder Put the main feed port of the extruder into the extruder, add the alkali-free glass fiber, and finally form the PP composition through melt extrusion and granulation. 350~400RPM.

Embodiment 2

[0045] Adopt the raw material of following weight portion proportioning:

[0046]

[0047]

[0048] Put the homopolymerized PP resin, 3000 mesh superfine talc powder, compatibilizer, antioxidant, anti-floating fiber agent, and lubricant into the high mixer according to the above mass parts and mix for 2 to 5 minutes, then mix the mixed The material is put into the extruder from the main feed port of the twin-screw extruder, added with alkali-free glass fiber, and finally melted and extruded to form PP composition. The temperature during the whole granulation process should be controlled at 180~ 220°C, the screw speed is controlled at 350-400RPM.

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Abstract

The invention relates to an alkali-free glass fiber reinforcing modified polypropylene composite material and a preparing method thereof. The alkali-free glass fiber reinforcing modified polypropylene composite material comprises, by mass, 45-55 parts of homopolymerized PP resin, 28-32 parts of alkali-free glass fibers, 13-17 parts of talcum powder, 4-6 parts of compatilizer, 0.5-2 parts of antioxidant, 0.5-2 parts of anti-fiber-floating agent and 0.5-2 parts of lubricating agent. The alkali-free glass fiber reinforcing modified polypropylene composite material has the advantages that the superfine talcum powder is added into a PP glass fiber reinforcement material for replacement, the talcum powder with the length-diameter ratio smaller than that of the glass fibers is used, the large-particle lubricating dispersion effect can be achieved in the mixture of the formula, the alkali-free glass fibers with the large length-diameter ratio can be better and evenly dispersed in the material accordingly, the surface bright-clean performance and the processing fluidity of a nylon composition can be effectively improved, and therefore a product with the bright and clean surface can be better processed.

Description

technical field [0001] The invention relates to the field of modified materials, in particular to the field of modified polypropylene materials, in particular to an alkali-free glass fiber reinforced modified polypropylene composite material and a preparation method thereof. Background technique [0002] In ordinary glass fiber-reinforced modified polypropylene (PP) materials, due to the material polarity compatibility between PP materials and alkali-free glass fibers, surface floating fibers, poor material fluidity, and product Partial warping and deformation. Compared with glass fiber-reinforced modified polypropylene composites, mineral-filled modified polypropylene composites have fine and smooth surfaces and good fluidity, but have problems such as large product shrinkage and low heat-resistant temperature. [0003] In the application of electronic appliances, automobiles, home appliances and household appliances, it is often required that the applied materials have go...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K13/04C08K7/14C08K5/134C08K5/526C08K5/20
CPCC08L23/12C08L2201/08C08L51/06C08K13/04C08K7/14C08K5/1345C08K5/526C08K5/20C08K3/34
Inventor 林杰林继炎
Owner ZHEJIANG PINNUO NEW MATERIALS
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