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High-glossiness flame-retardant scratch-resistant polypropylene composition and preparation method thereof

A polypropylene composition and polypropylene technology, applied in the field of polyolefins, can solve the problems of reducing PP gloss, gloss reduction, and poor appearance of parts, and achieve the effect of reducing the influence of surface gloss

Active Publication Date: 2014-12-24
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent 201410006586.2 discloses a method for preparing a low linear expansion, scratch-resistant, high-gloss polypropylene composite material, using polypropylene, phenolic resin and curing agent and Compatibilizers and other composite materials with high gloss, low linear expansion coefficient and scratch resistance characteristics, the use of inorganic fillers to reinforce polypropylene improves the flexural modulus and tensile strength of the material, but does not involve the resistance of the composite material. Flammability
[0005] Chinese patent 201210142168.8 discloses a high-gloss scratch-resistant polypropylene resin and its preparation method, which retains the original excellent properties of PP resins and also has high gloss , scratch resistance, weather resistance and a series of advantages, but does not involve flame retardancy
By adding ultra-fine magnesium hydroxide to PP resin, since all minerals added to polypropylene will reduce the gloss of PP to varying degrees, adding 20 to 60 degrees, the gloss reduction will be more serious, and a large amount of mineral filling will make the material The impact resistance performance is greatly reduced, and the phenomenon of brittleness appears, and the application range is limited
[0007] The above technologies use a large amount of flame retardants to improve the flame retardant properties of materials or minerals to improve the surface hardness of PP; the disadvantage is that the added large amount of fillers makes the material glossiness drop greatly , and the impact resistance is reduced and the performance is brittle, and the processing performance is poor, resulting in a bad appearance of the workpiece
Scratch-resistant polypropylene with a flame-retardant UL-94 V-2 rating is achieved by adding a small amount of high-efficiency flame retardants. The current application in polypropylene has not been involved

Method used

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  • High-glossiness flame-retardant scratch-resistant polypropylene composition and preparation method thereof
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  • High-glossiness flame-retardant scratch-resistant polypropylene composition and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0041] Table 1: Weight ratio

[0042]

[0043] (1) Weigh raw materials according to the weight ratio in Table 1: polypropylene, MCA, octabromoether, compatibilizer, anti-scratch agent, antioxidant, other additives;

[0044] (2) Put polypropylene, MCA, octabromoether, compatibilizer, anti-scratch agent, antioxidant and other additives together in a high mixer and mix for 10 minutes;

[0045] (3) Put the material into the twin-screw extruder, control the feeding speed, extrude and granulate, the speed of the twin-screw machine is 300 rpm; the vacuum degree is ≥0.06MPa, and the twin-screw extrusion process is listed in Table 2 middle.

[0046] Table 2: Twin-screw extrusion process

[0047]

[0048] It should be noted:

Embodiment 1

[0050] The compatibilizer used in embodiment 1, comparative example 1 is polypropylene graft maleic anhydride; The compatibilizer used in embodiment 2, embodiment 3 is polyethylene graft maleic anhydride.

[0051] The high-gloss flame-retardant and scratch-resistant polypropylene developed according to the above-mentioned process and formula, the glossiness prepared from homopolymerized and random copolymerized polypropylene is obviously better than that of ordinary copolymerized polypropylene. To prepare high-gloss flame-retardant and scratch-resistant polypropylene, random copolymerized polypropylene and homopolymerized polypropylene can be used as base materials.

Embodiment 4~6

[0053] Table 4: Weight ratio

[0054]

[0055] (1) Weigh raw materials according to the weight ratio in Table 4: polypropylene, MCA, decabromodiphenyl ether, compatibilizer, scratch-resistant agent, antioxidant, other additives;

[0056] (2) Put polypropylene, MCA, decabromodiphenyl ether, compatibilizer, anti-scratch agent, antioxidant and other additives together in a high mixer and mix for 10 minutes;

[0057](3) Put the material into the twin-screw extruder, control the feeding speed, extrude and granulate, the speed of the twin-screw machine is 300 rpm; the vacuum degree is ≥0.06MPa, and the twin-screw extrusion process is listed in Table 2 middle.

[0058] Table 5: Performance comparison

[0059]

[0060] It should be noted:

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Abstract

The invention relates to a high-glossiness flame-retardant scratch-resistant polypropylene composition and a preparation method thereof. The composition is prepared from the following components in parts by weight: 91-95 parts of polypropylene, 1-2 parts of MCA (melamine cyanurate), 0.5-1 part of flame-retardant synergistic agent, 2-3 parts of compatilizer, 1-1.5 parts of silicone master batch, 0.2-0.6 part of antioxidant and 0.2-0.4 part of other assistant. The nitrogenous halogen-free environment-friendly flame retardant melamine cyanurate (MCA) and environment-friendly bromic synergistic flame retardant octabromoether or decabromodiphenyl oxide are reasonably proportioned to implement the V-1-grade flame retardancy of the material; a proper amount of silicone master batch is added to enhance the scratch resistance of the material; and small amounts of flame retardant and silicone master batch are added to implement the V-1-grade flame retardancy and scratch resistance of the material while reducing the influence on the glossiness of the material, thereby obtaining the high-glossiness flame-retardant scratch-resistant polypropylene material.

Description

technical field [0001] The invention relates to the technical field of polyolefins, in particular to a high-gloss flame-retardant and scratch-resistant polypropylene composition and a preparation method thereof. Background technique [0002] As one of the five general-purpose plastics, polypropylene PP has the advantages of low density, low production cost, good comprehensive mechanical properties, non-toxic, corrosion resistance, easy processing and recycling, etc., and is widely used in various places, such as household appliances, automobiles, etc. Decorative parts, fitness equipment, office supplies, daily necessities, toys, and sanitary ware occupy an important position in plastics, but when making home appliance parts, their strength, flame retardancy, and scratch resistance often fail to meet the requirements. The application of polypropylene is severely limited. At present, it is more commonly used to modify polypropylene with chlorine-based, bromine-based and halog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L83/04C08K5/3492C08K5/06C08K5/00C08K13/02B29C47/92B29C48/92
CPCB29C48/92C08K2201/003C08L23/12C08L23/14C08L2201/02C08L2205/02C08L2205/03C08L2205/035C08L83/04C08L51/06C08K5/0008C08K5/0066C08K5/34924C08K5/06C08K5/1345C08K5/526C08L23/06
Inventor 沈叶龙娄小安裘浩成路海冰孟成铭
Owner 上海日之升科技有限公司
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