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Rigidity-toughness balanced polypropylene

A polypropylene, balanced technology, applied in the field of polypropylene materials and its preparation, can solve the problems of product longitudinal and transverse properties, shrinkage differences, etc., to achieve the effect of reducing processing costs, reducing the amount of toughening agent, and improving the degree of dispersion

Active Publication Date: 2012-01-11
中广核俊尔(上海)新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wollastonite is generally gray and difficult to use in natural or light-colored products, and the needle-like structure of wollastonite will cause anisotropy similar to glass fiber reinforced materials. Differences in performance, shrinkage, etc.

Method used

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  • Rigidity-toughness balanced polypropylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Surface treatment of low-mesh talc powder: Dilute 1kg of silane coupling agent KH550 (γ-aminopropyltriethoxysilane) with 1 bottle of 500mL absolute ethanol, mix with 100kg of 400-mesh low-mesh talc powder Mix evenly in the machine to prepare coupling agent-modified low-mesh talc powder. Put 8Kg coupling agent modified low-mesh talcum powder into the side feeding hopper of the twin-screw extruder.

[0032] Take by weighing 79.6Kg block copolymerization PP M700R (Shanghai Petrochemical), 12Kg mesh number is 3000 mesh high-mesh talcum powder, 0.1Kg antioxidant 1010, 0.1Kg antioxidant 168 and 0.2Kg lubricating oil by weight ratio in Table 1 Add calcium stearate, pour it into the mixer, make the material mix evenly, and put it into the main feeding hopper of the twin-screw extruder.

[0033] The barrel of the twin-screw extruder is a ten-section barrel, the first section of the barrel is connected to the main feeding device, the fifth section of the barrel is exhausted, the...

Embodiment 2

[0039] Surface treatment of low-mesh talc powder: Dilute 1kg of silane coupling agent KH550 (γ-aminopropyltriethoxysilane) with 1 bottle of 500mL absolute ethanol, mix with 100kg of low-mesh talc powder with a mesh of 1250 Mix evenly in the machine to prepare coupling agent-modified low-mesh talc powder. Put 8Kg coupling agent modified low-mesh talcum powder into the side feeding hopper of the twin-screw extruder.

[0040] Weigh 25Kg block copolymerized PP K8303 (Yanshan Petrochemical), 54.6Kg block copolymerized PP M700R (Shanghai Petrochemical), 12Kg of 5000 mesh high-mesh talcum powder, 0.1Kg antioxidant 1010 according to the weight ratio in Table 1 , 0.1Kg antioxidant 168 and 0.2Kg lubricant calcium stearate, pour into mixer, mix homogeneously, put into twin-screw extruder main feeding hopper.

[0041] Other operations were the same as in Example 1 to obtain rigid-tough balance polypropylene.

[0042] Test method is the same as embodiment 1.

Embodiment 3

[0044] Surface treatment of low-mesh talc powder: Dilute 1kg of silane coupling agent KH550 (γ-aminopropyltriethoxysilane) with 1 bottle of 500mL absolute ethanol, mix with 100kg of low-mesh talc powder with a mesh of 1250 Mix evenly in the machine to prepare coupling agent-modified low-mesh talc powder. Put 8Kg coupling agent modified low-mesh talcum powder into the side feeding hopper of the twin-screw extruder.

[0045] Weigh 12.5Kg of block copolymerized PP K8303 (Yanshan Petrochemical), 50.6Kg of block copolymerized PP M700R (Shanghai Petrochemical), 12.5Kg of block copolymerized PP K7726 (Yanshan Petrochemical) and 12Kg of 5000 mesh according to the weight ratio in Table 1. Purpose high-mesh talcum powder, 4Kg toughening agent POE (density is 0.86g / cm 3 , 190 ℃ × 2.16kg test conditions under the melt flow rate of 0.5g / 10min), 0.1Kg antioxidant 1010, 0.1Kg antioxidant 168 and 0.2Kg lubricant calcium stearate, pour into the mixer, make the material Mix well and put into ...

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Abstract

The invention discloses rigidity-toughness balanced polypropylene. The rigidity-toughness balanced polypropylene comprises: by weight, 45 to 90% of polypropylene, 5 to 20% of coupling agent-modified low-mesh talcum powder, 5 to 30% of high-mesh talcum powder, 0 to 15% of a flexibilizer, 0 to 2% of one or more antioxygens and 0 to 2% of one or more other additives. A preparation method of the coupling agent-modified low-mesh talcum powder comprises diluting a coupling agent by an appropriate amount of absolute ethanol and mixing the diluted coupling agent and low-mesh talcum powder well to obtain the desired product. Particle sizes of the low-mesh talcum powder are in a range of 400 to 1500 meshes and particle sizes of the high-mesh talcum powder are in a range of 2000 to 10000 meshes. Because of balance between rigidity and toughness, the rigidity-toughness balanced polypropylene can be utilized widely for interior and exterior decorations of middle / high-grade automobiles with a natural color or other colors. The invention also discloses a preparation method of the rigidity-toughness balanced polypropylene. The preparation method does not adopt special equipment.

Description

technical field [0001] The invention relates to the field of modified polypropylene materials, in particular to a polypropylene material with relatively balanced rigidity and toughness and a preparation method thereof. Background technique [0002] In recent years, with the continuous development of the automobile industry, the requirements for low cost, low fuel consumption and light weight of automobiles have become higher and higher, which has led to an increase in the proportion of plastic materials with low density and good corrosion resistance in automotive materials year by year. The design of automobile styling is becoming more and more fashionable and beautiful, which makes the design of plastic parts pursue harmony and unity with the shape of the car body, which requires the design of automotive plastic parts to develop in the direction of complex shapes, thin walls, and light weight. Therefore, the materials used to make automotive plastic parts are required to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/00C08K13/06C08K9/04C08K9/06C08K3/34B29B9/06
Inventor 沈岳新黄志杰左绍文
Owner 中广核俊尔(上海)新材料有限公司
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