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Wear-resistant polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of plastics, can solve the problems of easy water absorption and contamination, easy breeding of bacteria and mildew, restrictions on the selection and application of polypropylene materials, etc., to broaden the application field, excellent surface scratch resistance and mechanical properties , Improve the effect of antibacterial and mildew resistance

Inactive Publication Date: 2019-03-15
安庆市泽烨新材料技术推广服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the addition of mica powder, mica powder, wollastonite, kaolin and other fillers, the polypropylene material has a certain degree of water absorption, especially after being used in washing machines and small household appliances for a long time, the polypropylene material is prone to Water absorption and staining are more likely to breed bacteria and mildew, which greatly limits the selection and application of polypropylene materials

Method used

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  • Wear-resistant polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A wear-resistant polypropylene composite material, calculated in parts by weight, includes the following components:

[0021] 60 parts of polypropylene copolymer, 12 parts of low-density polyethylene, 19 parts of mica powder, 5 parts of nano zinc oxide modified by silane coupling agent, 7 parts of silicone rubber, isopropyl tri(dioctyl phosphate acyloxy) titanic acid 2 parts of ester, 8 parts of ethylene-octene copolymer, 0.5 part of tris(2,4-di-tert-butylphenyl) phosphite and 1 part of polyethylene wax.

[0022] Preparation:

[0023] 1) First mix mica powder, silicone rubber, isopropyl tris(dioctyl phosphate acyloxy) titanate, copolymerized polypropylene accounting for 35% of the total mass and toughening agent accounting for 15% of the total mass, and use The internal mixer is discharged to prepare the masterbatch;

[0024] 2) Mix the masterbatch obtained in step 1) with low-density polyethylene, silane coupling agent modified nano-zinc oxide, tris(2,4-di-tert-butyl...

Embodiment 2

[0026] A wear-resistant polypropylene composite material, calculated in parts by weight, includes the following components:

[0027] 55 parts of homopolypropylene, 15 parts of low-density polyethylene, 15 parts of mica powder, 3 parts of nano-zinc oxide modified by silane coupling agent, 10 parts of silicone rubber, 1 part of isopropyl titanate triisostearate, ethylene - 5 parts of α-olefin polymer, 0.2 part of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 0.5 part of polyethylene wax.

[0028] Preparation:

[0029] 1) First mix mica powder, silicone rubber, isopropyl titanate triisostearate, homopolypropylene accounting for 30% of the total mass and ethylene-α-olefin polymer accounting for 20% of the total mass, and use a dense The masterbatch is prepared from the kneading machine;

[0030] 2) mix the masterbatch obtained in step 1) with low-density polyethylene, silane coupling agent modified nano-zinc oxide, tetrakis[β-(3,5-di-tert-b...

Embodiment 3

[0032] A wear-resistant polypropylene composite material, calculated in parts by weight, includes the following components:

[0033] 35 parts of copolymerized polypropylene, 30 parts of homopolypropylene, 10 parts of low-density polyethylene, 25 parts of mica powder, 6 parts of nano-zinc oxide modified by silane coupling agent, 5 parts of silicone rubber, isopropyl tri(dioctyl 3 parts of phosphoric acyloxy) titanate, 10 parts of ethylene-octene copolymer, 0.8 part of dioctadecyl thiodipropionate and 1.5 parts of polyethylene wax.

[0034] Preparation:

[0035] 1) Mix mica powder, silicone rubber, isopropyl tris(dioctyl phosphate acyloxy) titanate, polypropylene resin accounting for 40% of the total mass and ethylene-octene copolymer accounting for 10% of the total mass Uniform, prepare masterbatch with internal mixer;

[0036] 2) mix the masterbatch obtained in step 1) with low-density polyethylene, silane coupling agent modified nano-zinc oxide, dioctadecyl thiodipropionate...

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Abstract

The invention provides a wear-resistant polypropylene composite material and a preparation method thereof. The composite material comprises the following components: 55-65 parts of a polypropylene resin, 10-15 parts of a polyethylene resin, 15-25 parts of mica powder, 3-6 parts of modified nano zinc oxide, 5-10 parts of silicone rubber, 1-3 parts of a titanate coupling agent, 5-10 parts of a toughening agent, 0.2-0.8 part of an antioxidant and 0.5-1.5 parts of polyethylene wax. The preparation method comprises the steps of: 1) at first, uniformly mixing the mica powder, the silicone rubber, the titanate coupling agent, the polypropylene resin occupying 30-40% of the total mass and the toughening agent occupying 10-20% of the total mass, and preparing a masterbatch by using an internal mixer; and 2) mixing the masterbatch obtained in the step 1) with the polyethylene resin, the modified nano zinc oxide, the antioxidant, the polyethylene wax, the remaining toughening agent and the remaining polypropylene resin, carrying out fusion, mixing and dispersion at 210-240 DEG C in a twin-screw extruder, and carrying extrusion and granulation. The composite material has good hydrophobicity and friction resistance.

Description

technical field [0001] The invention belongs to the technical field of plastics, and in particular relates to a wear-resistant polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene, as a general-purpose plastic, has entered every corner of daily life. Polypropylene modified with mineral powder has been widely used in household appliances due to its good rigidity, low shrinkage and deformation. The currently used method is to add elastomer materials to the polypropylene matrix to increase the impact strength, and to increase the tensile strength, bending strength and bending modulus by introducing 10-40% mica powder, mica powder, wollastonite, kaolin and other fillers. The amount of scratch resistance is improved by introducing scratch resistance agents such as silicone masterbatches and amide-containing resins. Although such methods adjust the comprehensive properties by simultaneously applying elastomers, fillers and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L83/04C08L23/06C08K13/06C08K9/06C08K3/22C08K3/34
CPCC08K2003/2296C08K2201/011C08L23/12C08L23/14C08L2205/025C08L2205/035C08L2207/066C08L83/04C08L23/06C08K13/06C08K9/06C08K3/22C08K3/34
Inventor 汪琦
Owner 安庆市泽烨新材料技术推广服务有限公司
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