A kind of high-strength corrosion-resistant polypropylene composite material and its preparation method

A composite material and corrosion-resistant technology, which is applied in the field of high-strength corrosion-resistant polypropylene composite materials and its preparation, can solve the problems of not meeting actual needs and poor material performance, and achieve excellent mechanical properties, meet mechanical requirements, and corrosion resistance excellent effect

Inactive Publication Date: 2016-01-13
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the strong chemical resistance of PP itself, some traditional materials such as pump bodies and pipes also use PP / GF materials, which have been well applied in certain fields, but because the main component of glass fiber is SiO 2 , in an alkaline environment for a long time, corrosion reactions will occur, so PP / GF is limited in this field. If other inert minerals are filled and strengthened, the performance of the material is poor and cannot meet the actual needs.

Method used

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  • A kind of high-strength corrosion-resistant polypropylene composite material and its preparation method

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Experimental program
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Effect test

Embodiment 1～2

[0032] A kind of preparation method of high-strength corrosion-resistant polypropylene composite material, its raw material components and content are as shown in Table 1:

[0033] Table 1

[0034] raw material name

Example 1

Example 2

PP

79

61

PE

10

20

carbon fiber

8

15

Corrosion Modifier

0.5

0.5

Compatibilizer

3

4

168 / 1010(1∶1)

0.4

0.4

[0035] Wherein, the PP is a homopolypropylene resin with a melt index of 15-40g / 10min; PE is LLDPE; the carbon fiber is a chopped carbon fiber whose length is 4-7mm and whose tensile strength is >500kg / mm 2 , tensile modulus > 250G Pa; corrosion modifier is polytetrafluoroethylene; compatibilizer is maleic anhydride grafted polypropylene; antioxidant is hindered phenolic antioxidant and phosphite antioxidant agent compounding; the hindered phenolic antioxidant is antioxidant 1010, and the phosphite antioxidant is antioxidant ...

Embodiment 3

[0041] A preparation method of a high-strength corrosion-resistant polypropylene composite material, the method comprising the following steps:

[0042] (1) Weigh the raw materials according to the following components and parts by weight: PP30, PE40, carbon fiber 20, corrosion-resistant modifier 5, compatibilizer 10, antioxidant 0.5;

[0043] (3) Put the mixed raw materials of PP, PE, corrosion-resistant modifier, compatibilizer, and antioxidant into the screw machine, and the carbon fiber is metered in from the side feed, extruded and granulated, and the speed of the screw machine is controlled to be 180 -600rpm, the temperature is 190-220°C, the product is obtained by melt extrusion and granulation.

[0044] Wherein, the PP is a homopolypropylene resin with a melt index of 15-40g / 10min; PE is LLDPE; the carbon fiber is a chopped carbon fiber whose length is 4-7mm and whose tensile strength is >500kg / mm 2 , tensile modulus > 250G Pa; corrosion modifier is polytetrafluoroeth...

Embodiment 4

[0046] A preparation method of a high-strength corrosion-resistant polypropylene composite material, the method comprising the following steps:

[0047] (1) Weigh the raw materials according to the following components and parts by weight: PP70, PE10, carbon fiber 5, corrosion-resistant modifier 0.5, antioxidant 0.1;

[0048] (3) Put the mixed raw materials of PP, PE, corrosion-resistant modifier and antioxidant into the screw machine, and the carbon fiber is metered in from the side feeding, extruded and granulated, and the rotating speed of the screw machine is controlled to be 180-600rpm, and the temperature The temperature is 190-220°C, and the product can be obtained by melt extrusion and granulation.

[0049] Wherein, the PP is a homopolypropylene resin with a melt index of 15-40g / 10min; PE is LLDPE; the carbon fiber is a chopped carbon fiber whose length is 4-7mm and whose tensile strength is >500kg / mm 2 , tensile modulus > 250G Pa; corrosion resistance modifier is pol...

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Abstract

The invention relates to a high-strength corrosion resistance polypropylene composite material and a preparation method thereof. The preparation method comprises the following steps of: (1) weighting the following raw materials in parts by weight: 30-80 parts of PP (Propene Polymer), 10-40 parts of PE (Poly Ethylene), 5-20 parts of carbon fiber, 0.5-5 parts of corrosion resistance modifying agent, 0-10 parts of compatilizer and 0.1-0.5 part of antioxidant; and (2) putting the mixed raw material of the PP, the PE, the corrosion resistance modifying agent, the compatilizer and the antioxidant in a screw machine, measuring and feeding the carbon fiber from a side feed port, extruding and pelleting, controlling the rotating speed of the screw machine to 180-600rpm and the temperature to 190-220 DEG C, and carrying out melt extrusion and pelleting to obtain the product. Compared with the traditional glass fiber reinforced polypropylene material of the prior art, the high-strength corrosion resistance polypropylene composite material has the advantages of high mechanical strength, good flowability, good acid and alkali corrosion resistance and particularly suitability for pipelines and pump body materials which have higher requirement for chemical corrosion resistance.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a high-strength corrosion-resistant polypropylene composite material and a preparation method thereof. Background technique [0002] As a traditional reinforcing material, glass fiber has obvious advantages and is widely used in PP reinforced systems. The PP / GF reinforced composite material modified by glass fiber can increase the thermal deformation temperature of filled PP plastics, increase the dimensional stability of products, Reduce molding shrinkage and increase rigidity. Due to the strong chemical resistance of PP itself, some traditional materials such as pump bodies and pipes also use PP / GF materials, which have been well applied in certain fields, but because the main component of glass fiber is SiO 2 , In an alkaline environment for a long time, corrosion reactions will occur, so PP / GF is limited in this field. If other inert minerals are fille...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/06C08L27/18C08L51/06C08K9/00C08K7/06C08K5/134C08K5/524C08J5/06
Inventor 张强孟成铭黄晓明娄小安
Owner SHANGHAI SUNNY
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