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A kind of non-tiger pattern polypropylene composite material and preparation method thereof

A composite material and tiger skin pattern technology, applied in the field of non-tiger skin pattern polypropylene composite material and its preparation, can solve the problems of decreased toughness of composite materials, incompatibility of fluidity and toughness, and inability to achieve covering effect, etc. Melt strength, the effect of solving tiger skin defects, and resisting shear and tensile deformation

Active Publication Date: 2022-04-12
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The method of removing tiger skin grains in the injection molding process of polypropylene composite materials mainly includes: improving material fluidity, adjusting material system viscosity, and tiger skin grain masking method. These improvement measures do have practical effects in suppressing and eliminating tiger skin grain defects. Help, but there are still deficiencies: 1) By selecting high-flow polypropylene, rubber elastomer and adding peroxide, the method is to improve the fluidity of the composite material, but the fluidity and toughness of the material are not compatible, A significant increase in fluidity will inevitably lead to a significant decrease in the toughness of the composite material. In addition, sometimes simply improving the fluidity of the composite material cannot effectively solve the appearance of tiger skin defects; 2) Compound high and low flow resin and rubber to achieve composite material The relatively stable flow of the system in the injection molding process has certain limitations on the selectivity of the product; 3) The use of graphene and the method with a metallic texture to cover the appearance of the product with tiger skin patterns is suitable for relatively light colors, while for color partial Products with higher requirements for deep and blackness levels cannot provide a covering effect

Method used

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  • A kind of non-tiger pattern polypropylene composite material and preparation method thereof
  • A kind of non-tiger pattern polypropylene composite material and preparation method thereof
  • A kind of non-tiger pattern polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] S1: Fully mix 1 part of styrene, 39 parts of polyolefin elastomer and 156 parts of liquid carbon tetrachloride, then add 0.05 part of initiator and 0.05 part of crosslinking agent, fill the reaction kettle with nitrogen protection, and mechanically stir and mix at room temperature Uniform;

[0040] S2: Raise the temperature of the reaction kettle to 65° C., continue stirring for 8 hours, remove the solvent, and prepare the tiger-stripe eliminating agent.

[0041] S3: Weigh 60 parts of BX3900 polypropylene, 20 parts of SP179 polypropylene, 10 parts of tiger stripe remover, 10 parts of talcum powder, 0.2 parts of antioxidant 1010, 0.2 parts of antioxidant 168, 0.2 parts of lubricant, 0.2 parts The light stabilizer and 1 part of black masterbatch are fully mixed and stirred at a high speed to obtain a well-mixed blend;

[0042] S4: put the blend obtained in step S3 into a twin-screw extruder, the screw speed of the twin-screw extruder is 400r / min, and the vacuum degree du...

Embodiment 2

[0044] S1: Fully mix 1 part of styrene, 39 parts of polyolefin elastomer and 156 parts of liquid carbon tetrachloride, then add 0.1 part of initiator and 0.1 part of crosslinking agent, fill the reaction kettle with nitrogen protection, and mechanically stir and mix at room temperature Uniform;

[0045] S2: Raise the temperature of the reaction kettle to 85° C., continue stirring for 9 hours, remove the solvent, and prepare the tiger-stripe eliminating agent.

[0046]S3: Weigh 45 parts of BX3900 polypropylene, 20 parts of SP179 polypropylene, 15 parts of tiger stripe remover, 20 parts of talcum powder, 0.2 part of antioxidant 1010, 0.2 part of antioxidant 168, 0.2 part of lubricant, 0.3 part The light stabilizer and 1.5 parts of black masterbatch are fully mixed and stirred at high speed to obtain a well-mixed blend;

[0047] S4: put the blend obtained in step S3 into a twin-screw extruder, the screw speed of the twin-screw extruder is 450r / min, and the vacuum degree during e...

Embodiment 3

[0049] S1: Fully mix 1 part of styrene, 39 parts of polyolefin elastomer and 156 parts of liquid carbon tetrachloride, then add 0.07 part of initiator and 0.07 part of crosslinking agent, fill the reaction kettle with nitrogen protection, and mix mechanically at room temperature Uniform;

[0050] S2: Raise the temperature of the reaction kettle to 75° C., continue stirring for 10 hours, remove the solvent, and prepare the tiger-stripe eliminating agent.

[0051] S3: Weigh 35 parts of BX3900 polypropylene, 20 parts of SP179 polypropylene, 15 parts of tiger stripe remover, 30 parts of talcum powder, 0.3 part of antioxidant 1010, 0.3 part of antioxidant 168, 0.3 part of lubricant, 0.2 part The light stabilizer and 2 parts of black masterbatch are fully mixed and stirred at a high speed to obtain a well-mixed blend;

[0052] S4: put the blend obtained in step S3 into a twin-screw extruder, the screw speed of the twin-screw extruder is 425r / min, and the vacuum degree during extrus...

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Abstract

The invention discloses a non-tiger-skin polypropylene composite material and a preparation method thereof, which comprises 55-80 parts of polypropylene, 10-15 parts of tiger-skin pattern eliminating agent, 10-30 parts of Stabilizer, 0.4-0.6 parts of antioxidant, 0.2-0.3 parts of lubricant and 1-2 parts of other additives, wherein the tiger-stripe eliminating agent is polystyrene-polyolefin cross-linked elastomer. The styrene-polyolefin cross-linked elastomer with high melt strength synthesized by the present invention is melt-blended with the polypropylene composite material. In the injection molding process, the modified polyolefin elastomer has a cross-linked network structure and copolymerization between molecules. The polystyrene rigid molecule can significantly resist the shear tensile deformation of the melt flow, and can maintain a stable flow during the melt flow process, which fundamentally solves the problem of tiger skin caused by the unstable flow of rubber in conventional polypropylene-based products grain defects.

Description

technical field [0001] The invention relates to the technical field of polymer material modification and processing, in particular to a polypropylene composite material without tiger skin pattern and a preparation method thereof. Background technique [0002] Polypropylene resin (PP) stands out among other polymers because of its low price, balanced mechanical properties, easy processing and good weather resistance. Forming methods such as spinning have been widely used in many fields such as automobiles, home furnishing, home appliances, consumer goods, plates, and textiles. [0003] The molecular chain structure of polypropylene resin is simple. By adding rubber and talc powder, the composite material can be improved in terms of impact strength, heat resistance, stiffness and dimensional stability. For products that require toughness and rigidity, the most conventional way is polypropylene. Melt blending of , rubber elastomer and talc powder can significantly improve the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L51/06C08K13/02C08K3/34C08F255/02C08F212/08
CPCC08L23/14C08F255/02C08L2205/03C08L2205/025C08L51/06C08K13/02C08K3/34C08F212/08
Inventor 张申伟王刚罗鹏闫溥周海
Owner ORINKO NEW MATERIAL CO LTD
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