Flame-retardant PP (polypropylene) composite material and preparation method thereof

A flame retardant composite material, polypropylene technology, applied in the field of plastics, can solve the problem of high cost of flame retardant polypropylene, and achieve the effects of improving the flame retardant effect, broadening the application field and high self-cleaning.

Inactive Publication Date: 2019-02-15
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

At present, V-0 flame retardant polypropylene commonly used in China, the proportion of flame retardant is 21 parts of decabromodiphenylethane and 7 parts of Sb 2 o 3 However, due to the rising price of antimony trioxide and other comprehensive factors, the cost of flame-retardant polypropylene prepared by this method is too high

Method used

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  • Flame-retardant PP (polypropylene) composite material and preparation method thereof
  • Flame-retardant PP (polypropylene) composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A polypropylene flame-retardant composite material, calculated in parts by weight, includes the following components:

[0022] 60 parts of polypropylene copolymer, 19 parts of wollastonite, 7 parts of magnesium aluminum hydrotalcite, 2 parts of phosphomolybdic acid, 5 parts of nano-zinc oxide modified by silane coupling agent, 7 parts of silicone rubber, isopropyl tri(dioctyl 2 parts of phosphoric acyloxy) titanate, 8 parts of ethylene-octene copolymer, 0.5 part of tris(2,4-di-tert-butylphenyl) phosphite and 1 part of polyethylene wax.

[0023] Preparation:

[0024] 1) First mix wollastonite, 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, Prepare the masterbatch with an internal mixer;

[0025] 2) Combine the masterbatch obtained in step 1) with magnesium aluminum hydrotalcite, phosphomolybdic acid, silane coupling agent mod...

Embodiment 2

[0027] A polypropylene flame-retardant composite material, calculated in parts by weight, includes the following components:

[0028] 55 parts of homopolypropylene, 15 parts of wollastonite, 10 parts of magnesium aluminum hydrotalcite, 1 part of phosphomolybdic acid, 3 parts of nano zinc oxide modified by silane coupling agent, 10 parts of silicone rubber, triisostearate titanic acid 1 part of isopropyl ester, 5 parts of ethylene-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.

[0029] Preparation:

[0030] 1) First mix wollastonite, 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 The internal mixer is discharged to prepare the masterbatch;

[0031] 2) Combine the masterbatch obtained in step 1) with magnesium aluminum hydrotalcite, phosphomolybdi...

Embodiment 3

[0033] A polypropylene flame-retardant composite material, calculated in parts by weight, includes the following components:

[0034] 35 parts of copolymerized polypropylene, 30 parts of homopolypropylene, 25 parts of wollastonite, 5 parts of magnesium aluminum hydrotalcite, 3 parts of phosphomolybdic acid, 6 parts of nano-zinc oxide modified by silane coupling agent, 5 parts of silicone rubber, iso 3 parts of propyl tris(dioctyl phosphate acyloxy) titanate, 10 parts of ethylene-octene copolymer, 0.8 parts of dioctadecyl thiodipropionate and 1.5 parts of polyethylene wax.

[0035] Preparation:

[0036] 1) Wollastonite, silicone rubber, isopropyl tri(dioctyl phosphate acyloxy) titanate, polypropylene resin accounting for 40% of the total mass and ethylene-octene copolymer accounting for 10% of the total mass Mix evenly, and prepare masterbatch with internal mixer;

[0037] 2) Combine the masterbatch obtained in step 1) with magnesium aluminum hydrotalcite, phosphomolybdic aci...

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Abstract

The invention provides a flame-retardant PP (polypropylene) composite material and a preparation method thereof. The flame-retardant PP composite material comprises components as follows: 55-65 partsof PP resin, 15-25 parts of wollastonite, 5-10 parts of magnesium-aluminum hydrotalcite, 1-3 parts of phosphomolybdic acid, 3-6 parts of modified nano-zinc oxide, 5-10 parts of silicon rubber, 1-3 parts of a titanate coupling agent, 5-10 parts of a flexibilizer, 0.2-0.8 parts of an antioxidant and 0.5-1.5 parts of polyethylene wax. The preparation method comprises steps as follows: 1), firstly, wollastonite, the silicon rubber, the titanate coupling agent, the PP resin accounting for 30%-40% of total mass and the flexibilizer accounting for 10%-20% of total mass are mixed uniformly, and masterbatches are prepared by an internal mixer; 2), the masterbatches obtained in step 1) are mixed with magnesium-aluminum hydrotalcite, phosphomolybdic acid, modified nano-zinc oxide, the antioxidant, polyethylene wax, the remaining flexibilizer and the remaining PP resin, and a mixture is subjected to melt mixing and dispersing at 210-240 DEG C in a twin-screw extruder and subjected to extruded granulation. The composite material has good hydrophobic property, friction resistance and flame retardant performance.

Description

technical field [0001] The invention belongs to the technical field of plastics, and in particular relates to a polypropylene flame-retardant 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 improve the impact strength, and to improve the tensile strength, bending strength and bending strength by introducing 10-40% wollastonite, mica powder, wollastonite, kaolin and other fillers. Modulus, by introducing scratch-resistant agents such as silicone masterbatches and amide-containing resins to improve scratch resistance. Although such methods adjust the comprehensive properties by simultaneously applying elastomers, fillers and anti-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L83/04C08L23/06C08K13/06C08K3/34C08K3/26C08K3/32C08K9/06C08K3/22
CPCC08K2003/2296C08K2201/011C08L23/12C08L23/14C08L2201/02C08L2205/035C08L83/04C08L23/06C08K13/06C08K3/34C08K3/26C08K3/32C08K9/06C08K3/22
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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