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Modified polypropylene (PP) material reinforced by siliceous lime

A modified material, polypropylene technology, applied in the field of polypropylene material production, can solve the problems of low strength, modulus, hardness, poor low temperature impact strength, large molding shrinkage, etc., to improve mechanical properties and improve wear resistance , the effect of improving mechanical properties

Inactive Publication Date: 2017-05-31
QINGDAO XIUPOER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As one of the general-purpose plastic materials, polypropylene PP has excellent comprehensive properties, good chemical stability, good molding performance and relatively low price; but PP has low strength, modulus, hardness, low temperature impact strength Poor, large molding shrinkage, easy aging and other disadvantages

Method used

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  • Modified polypropylene (PP) material reinforced by siliceous lime
  • Modified polypropylene (PP) material reinforced by siliceous lime
  • Modified polypropylene (PP) material reinforced by siliceous lime

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Take each raw material respectively by weight ratio as follows:

[0022] Polypropylene raw material: 75

[0023] Silica lime (1250 mesh): 6.0

[0024] Titanium dioxide: 4.0

[0025] Rare earth aluminate coupling agent: 2.0

[0026] Antioxidant (copolymer of ethylene-octene): 2.5

[0027] Colorant: 1.0

[0028] Dispersed lubricant (TAS-2A): 1.0

[0029] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 5.0

[0030] Light stabilizer: 5.0

[0031] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 110-130°C, the second zone is 170-190°C, the third zone is 210-220°C, the fourth zone is 220-230°C; the fifth zone is 210-220°C, and the residence time is 1-2 minutes , pressure 10-15Mpa.

[0032] Experimental results:

[0033]

[0034] ...

Embodiment 2

[0036] (1) Take each raw material respectively by weight ratio as follows:

[0037] Polypropylene raw material: 65

[0038] Silica lime (1250 mesh): 4.0

[0039] Titanium dioxide: 3.0

[0040] Rare earth aluminate coupling agent: 1.0

[0041] Antioxidant (copolymer of ethylene-octene): 1.5

[0042] Colorant: 0.8

[0043] Dispersed lubricant (TAS-2A): 0.8

[0044] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 3.0

[0045] Light stabilizer: 3.0

[0046] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 110-130°C, the second zone is 170-190°C, the third zone is 210-220°C, the fourth zone is 220-230°C; the fifth zone is 210-220°C, and the residence time is 1-2 minutes , pressure 10-15Mpa.

[0047] Experimental results:

[0048]

[0049] ...

Embodiment 3

[0051] (1) Take each raw material respectively by weight ratio as follows:

[0052] Polypropylene raw material: 85

[0053] Silica lime (1250 mesh): 8.0

[0054] Titanium dioxide: 5.0

[0055] Rare earth aluminate coupling agent: 3.0

[0056] Antioxidant (copolymer of ethylene-octene): 3.5

[0057] Colorant: 1.2

[0058] Dispersed lubricant (TAS-2A): 1.2

[0059] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 7.0

[0060] Light stabilizer: 7.0

[0061] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 110-130°C, the second zone is 170-190°C, the third zone is 210-220°C, the fourth zone is 220-230°C; the fifth zone is 210-220°C, and the residence time is 1-2 minutes , pressure 10-15Mpa.

[0062] Experimental results:

[0063]

[0064] ...

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Abstract

The objective of the invention is to provide a siliceous lime-reinforced modified PP material capable of improving the defects of original PP, and a preparation method thereof. PP is one of the general plastic materials and has the advantages of excellent overall performance, good chemical stability, good molding and processing performance and low prices; however, PP has the disadvantages of low strength, modulus and hardness, poor low-temperature impact strength, great shrinkage in molding, proneness to ageing, etc. Thus, PP is modified so as to allow PP to meet requirements of products. Each modified PP material is extensively applied to the fields of household electrical appliances and vehicles. Siliceous lime is needle-like fiber, exerts reinforcing effect on polypropylene and greatly improves wear resistance, rigidity and heat resistance of PP. The siliceous lime-reinforced modified PP material in the invention can overcome the disadvantages of original PP materials, reinforces mechanical properties of PP and is of critical significance to application and further promotion of PP materials.

Description

technical field [0001] The invention belongs to the technical field of polypropylene material production and aims to improve the original defects of polypropylene. Produce products that meet social needs. Background technique [0002] Polypropylene, English name: Polypropylene, abbreviated name PP. Its chemical formula is: (C3H6)N. The structural formula is as follows: [0003] [0004] As one of the general-purpose plastic materials, polypropylene PP has excellent comprehensive properties, good chemical stability, good molding performance and relatively low price; but PP has low strength, modulus, hardness, low temperature impact strength Poor, large molding shrinkage, easy aging and other shortcomings. Therefore, it is modified so that it can be adapted to the needs of the product. Each modified PP has a large number of applications in the fields of household appliances and vehicles. Silica lime is a needle-like fiber, which has a reinforcing effect on polypropyle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K13/04C08K7/10C08K3/22C08K5/132C08J5/04B29C47/92B29C48/92
CPCB29C48/92B29C2948/92514B29C2948/92704C08J2323/12C08J2423/08C08K2201/011C08L23/12C08L2201/08C08J5/0405C08L23/0815C08K13/04C08K7/10C08K2003/2241C08K5/132
Inventor 王爱红
Owner QINGDAO XIUPOER TECH CO LTD
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