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Modified polypropylene complex with low warpage and high impact strength and preparation method of modified polypropylene complex

A polypropylene, high-impact technology, applied in the field of polymer plastic modification, can solve the problems of warping impact strength, impact strength drop, drop, etc., and achieve the effect of improving impact strength, low warpage, and high modulus

Inactive Publication Date: 2019-03-01
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a modified polypropylene compound with low warpage and high impact strength and a preparation method thereof, so as to overcome the technical defects that the existing glass fiber reinforced polypropylene products are prone to warpage and serious drop in impact strength, and solve the problem of Glass fiber reinforced polypropylene products are prone to warping, impact strength decline and other technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The invention discloses a modified polypropylene compound with low warpage and high impact strength, which comprises the following components in weight percentage:

[0029] Polypropylene 50%-75%, β-modified mica 3-10%, toughening agent 5-10%, modified alkali-free flat glass fiber 10-20%, antioxidant 0.1-0.6%, phase solvent 5- 9.5%, other additives 0.2-0.9%.

[0030] Wherein, the polypropylene is one of homopolypropylene, random copolymerized polypropylene, block copolymerized polypropylene or a combination thereof.

[0031] Wherein, the β-modified mica is mica coated with calcium carbonate crystals grafted with pimelic acid, and the mica is 300-500 mesh phlogopite or fluoromica.

[0032] Wherein, the toughening agent is one of ethylene-octene copolymer, low-density polyethylene, SBS or a combination thereof.

[0033] Wherein, the modified alkali-free flat glass fiber is dopamine-modified alkali-free flat glass fiber with an aspect ratio of 3 / 1.

[0034] Wherein, the ...

Embodiment 2

[0047] On the basis of Example 1, this example discloses a modified polypropylene compound with low warpage and high impact strength, which contains the following components in weight percent:

[0048] 50% polypropylene, 10% β-modified mica, 10% toughening agent, 20% modified alkali-free flat glass fiber, 0.6% antioxidant, 9% phase solvent, and 0.4% other additives.

[0049] Among them, polypropylene is homopolypropylene, β-modified mica is β-modified phlogopite, toughening agent is ethylene-octene copolymer, antioxidant is hindered phenolic antioxidant, and other additives are TAF .

[0050] The specific preparation method is as described in Example 1 and will not be repeated here.

Embodiment 3

[0052] On the basis of Example 1, this example discloses a modified polypropylene compound with low warpage and high impact strength, which contains the following components in weight percent:

[0053] 55% polypropylene, 8% β-modified mica, 8% toughening agent, 20% modified alkali-free flat glass fiber, 0.6% antioxidant, 8% phase solvent, and 0.4% other additives.

[0054] Among them, polypropylene is random copolymerized polypropylene, β-modified mica is β-modified fluoromica, toughening agent is low-density polyethylene, antioxidant is phosphite antioxidant, and other additives are silicone .

[0055] The specific preparation method is as described in Example 1 and will not be repeated here.

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PUM

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Abstract

The invention relates to the field of polymer plastic modification, and discloses a modified polypropylene complex with low warpage and high impact strength and a preparation method of the modified polypropylene complex. The modified polypropylene complex with the low warpage and the high impact strength is prepared from the following components in percentage by weight: 50-75% of polypropylene, 3-10% of a beta-modified mica modifier, 10-20% of modified alkali-free flat fiberglass, 5-10% of a flexibilizer, 5-9.5% of a compatibilizer, 0.1-0.6% of an antioxidant, and 0.2-0.9% of other auxiliaries. According to a prepared product, the simply supported beam notched impact strength can reach 36 KJ / m<2> or above, the bending modulus can reach 3000 MPa or above, meanwhile, the product further hasgood fluidity and low warping performance, and the product can be applied to large workpieces with high strength requirements.

Description

technical field [0001] The invention relates to the field of polymer plastic modification, in particular to a modified polypropylene compound with low warpage and high impact strength and a preparation method thereof. Background technique [0002] At present, glass fiber reinforced polypropylene has been widely researched and applied, and glass fiber reinforced polypropylene has high strength and high modulus properties. However, during the injection molding process of glass fiber reinforced polypropylene, the glass fibers are arranged in an orderly manner along the flow direction of the resin, which makes the product shrink inconsistently in the horizontal and vertical directions, resulting in warping of the product. This shortcoming severely limits the application of glass fiber reinforced polypropylene in the direction of large parts. Glass fiber reinforced polypropylene seriously reduces the impact strength of the product while increasing the modulus and strength. There...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L51/06C08L23/08C08L23/06C08L53/02C08K13/06C08K9/04C08K7/14C08K9/10C08K3/34
CPCC08K2201/016C08L23/14C08L2205/035C08L2205/06C08L2205/08C08L2207/066C08L51/06C08L23/0815C08L23/06C08L53/02C08K13/06C08K9/04C08K7/14C08K9/10C08K3/34
Inventor 廖登雄安峰赵海波申应军姜其焱张淼思彩燕王辉郭永新
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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