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Polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene material manufacturing, can solve the problems of polypropylene material properties such as unevenness, strength decline, temperature resistance, tensile and compressive strength, and poor corrosion resistance, and achieve optimal physical Chemical properties and mechanical properties, promotion of interfacial chemical bonding and effects of improving bonding force

Active Publication Date: 2013-05-22
江苏苏东化工机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use of mixing will also cause resin denaturation, which will greatly reduce its strength.
Moreover, the currently commonly used fillers generally use a single filler, and the properties of the polypropylene material obtained are not uniform.
For example, Chinese patent 00121409.8 discloses a polypropylene composite material, which is composed of 1 to 20 weight percent fiber rod stone clay and 80 to 99 weight percent polypropylene, which has good low-temperature impact resistance, but its temperature resistance, Tensile, compressive strength and corrosion resistance are poor; Chinese patent 200910069250.x discloses a polypropylene composite material and its preparation method, which is composed of polypropylene resin, ultrafine calcium carbonate filler and elastomer material, and its room temperature impact Strength and low-temperature impact strength are also significantly improved, but there is no improvement in temperature resistance, rigidity, tensile strength, and no significant improvement in corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Ingredients: Weigh the raw materials of each component according to the following mass: 13g graphite powder, 68g polypropylene, 15g glass fiber, 2.8g PP-g-MAH phase solvent, 1.2g maleic anhydride phase solvent, 2.4g surface treatment agent (1.2g rare earth aluminate composite agent and 1.2g titanate), 0.6g silane coupling agent KH550, 3g antioxidant (phenolic antioxidant 1010 and divalent sulfide DSTP or DLTP, phenolic antioxidant The ratio to divalent sulfide is 1 / 1.5);

[0029] (2) Surface treatment is carried out on graphite powder and glass fiber first, and graphite powder is put into a high-speed mixer for thermal stirring heating. The thermal stirring heating temperature is 80°C, and the thermal stirring time is 15 minutes. When the temperature of the graphite powder reaches 95°C, put the surface treatment agent rare earth aluminate compound and titanate into the graphite powder in sequence, and stir them together with the graphite powder, and at the same time...

Embodiment 2

[0033] (1) Ingredients: Weigh the raw materials of each component according to the following mass: 5g graphite powder, 84g polypropylene, 20g glass fiber, 7.4gPP-g-MAH phase solvent, 0.6g maleic anhydride phase solvent, 1.0g surface treatment agent ( 0.5g rare earth aluminate composite agent and 0.5g titanate), 1.0g silane coupling agent KH550, 3g antioxidant (phenolic antioxidant 1010 and divalent sulfide DSTP or DLTP, phenolic antioxidant and The ratio of divalent sulfide is 1 / 1.2);

[0034] (2) Surface treatment is performed on the graphite powder and glass fiber first, and the graphite powder is put into a high-speed mixer for thermal stirring and heating. The heating temperature of the thermal stirring is 85°C, and the thermal stirring time is 20 minutes. When the temperature of the graphite powder reaches 90°C, put the surface treatment agent rare earth aluminate compound and titanate into the graphite powder in sequence, and stir them together with the graphite powder, ...

Embodiment 3

[0038] (1) Ingredients: Weigh the raw materials of each component according to the following mass: 20g graphite powder, 52g polypropylene, 10g glass fiber, 1.4gPP-g-MAH phase solvent, 0.6g maleic anhydride phase solvent, 3.6g surface treatment agent ( 2.3g rare earth aluminate composite agent and 1.3g titanate), 0.4g silane coupling agent KH550, 1g antioxidant (0.4g phenolic antioxidant 1010 and 0.6g divalent sulfide DSTP);

[0039] (2) Surface treatment is carried out on graphite powder and glass fiber first, and graphite powder is put into a high-speed mixer for thermal stirring and heating. The thermal stirring heating temperature is 90°C, and the thermal stirring time is 20 minutes. When the temperature of the graphite powder reaches 100°C, put the surface treatment agent rare earth aluminate compound and titanate into the graphite powder in sequence, and stir them together with the graphite powder, and raise the temperature of the graphite powder after adding the surface t...

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Abstract

The invention relates to a polypropylene (PP) composite material and a preparation method thereof. The polypropylene composite material comprises the components in parts by weight as follows: 50-80 parts of polypropylene, 5-20 parts of graphite powder, 8-20 parts of glass fiber, 1-3.6 parts of surface treating agent, 0.4-7.4 parts of unsaturated carboxylic acid and polypropylene graft phase solvent, 0.6-1.6 parts of maleic anhydride phase solvent, 0.4-3 parts of coupler and 1-4 parts of antioxidant. The preparation method comprises the following steps of: firstly, carrying out surface treatment on graphite powder and glass fiber; then, mixing polypropylene, unsaturated carboxylic acid, polypropylene graft phase solvent, antioxidant and graphite powder after surface treatment at high speed to obtain a graphite / PP mixture; and then, melting, cutting, mixing, homogenizing, extruding, cooling and prilling the graphite / PP mixture and dried glass fiber by a double-screw extruder to obtain graphite modified and reinforced PP composite material. The PP composite material provided by the invention is better in heat resistance and chemical corrosion resistance, and meanwhile, the tensile strength and impact strength are further remarkably improved.

Description

technical field [0001] The invention relates to the field of polypropylene material manufacturing, in particular to a polypropylene composite material with high temperature resistance, pressure resistance, corrosion resistance and certain impact strength that can be widely used in chemical industry, environmental protection, metallurgy and other industries and a preparation method thereof. Background technique [0002] Polypropylene resin is widely used in the manufacture of mechanical parts in chemical industry, environmental protection, metallurgy and other industries due to its certain rigidity, strength and temperature resistance. However, in the chemical industry and other industries, especially for solid-liquid separation with high temperature and strong chemical corrosion resistance, it is obviously not adaptable, and polypropylene itself has poor impact resistance, high maintenance costs, and short service life. Polypropylene materials with excellent high temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K9/04C08K3/04C08K7/14C08J5/08
Inventor 汪统华丁宏明陈怀兵徐东军顾晶
Owner 江苏苏东化工机械有限公司
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