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Dispersing method of halogen-free flame retardant polypropylene

A technology of flame-retardant polypropylene and polypropylene, which is applied in the field of flame-retardant PP materials, can solve problems such as easy delamination, poor compatibility of flame retardants, and affecting material performance, and achieve the effect of improving compatibility and stabilizing quality

Active Publication Date: 2012-07-18
FSPG HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, this type of intumescent halogen-free flame retardant has an obvious disadvantage, that is, the compatibility between the flame retardant and PP resin is relatively poor, and it is easy to delaminate during the molding process. At the same time, there are still many flame retardants that have not been dispersed. , forming dense white spots, affecting the performance of the material

Method used

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  • Dispersing method of halogen-free flame retardant polypropylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Premix 59 parts of PP, 35 parts of halogen-free flame retardant, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, 5 parts of compatibilizer, and 1 part of ethylene bis fatty acid amide (EBS). Extrusion and granulation are carried out in a twin-screw extruder with an aspect ratio of 40. The processing temperatures are: 170°C, 180°C, 190°C, 190°C, 200°C, 200°C, 200°C, 190°C, 190°C, The head temperature is 190°C.

Embodiment 2

[0043] 57 parts of PP, 35 parts of halogen-free flame retardant, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, 5 parts of compatibilizer, 1 part of ethylene bis fatty acid amide (EBS), 3 parts of BYK-9076 Mixing, the above mixture is extruded and granulated in a twin-screw extruder with an aspect ratio of 40. The processing temperatures are: 170°C, 180°C, 190°C, 190°C, 200°C, 200°C, 200°C, 190°C, 190°C, head temperature is 190°C.

Embodiment 3

[0045] 54 parts of PP, 35 parts of halogen-free flame retardant, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, 5 parts of compatibilizer, 1 part of ethylene bis fatty acid amide (EBS), 3 parts of BYK-9076, 3 parts of powder BYK-4100 parts are pre-mixed, and the above mixture is extruded and granulated in a twin-screw extruder with an aspect ratio of 40. The processing temperatures are: 170°C, 180°C, 190°C, 190°C, 200°C °C, 200 °C, 200 °C, 190 °C, 190 °C, the head temperature is 190 °C.

[0046] Using the masterbatches obtained in Comparative Examples and Examples 1-3, a sheet of the halogen-free flame-retardant polypropylene composition was prepared, and then its properties were tested. The data are listed in Table 1.

[0047] Table 1

[0048]

[0049] As can be seen from the data listed in Table 1, the mechanical properties of the halogen-free flame-retardant polypropylene composition of the present invention added with a compatibilizer and a dispersant are s...

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Abstract

The invention discloses a halogen-free flame retardant polypropylene composite which comprises the following components in parts by weight: 50-70 parts of polypropylene, 25-35 parts of halogen-free flame retardant, 1-10 parts of compatilizer and 1-10 parts of at least one dispersing agent selected from dispersing agent I, dispersing agent II and dispersing agent III, wherein the compatilizer is one or more than one polymer grafted with a polar monomer, a substrate of the polymer is one of or the mixture of polyethylene, polypropylene, EVA (ethylene-vinyl acetate) and ethylene-propylene-butadiene terpolymer, and the polar monomer is one or more than one of crylic acid, methacrylic acid and maleic anhydride; the dispersing agent I is ethylene double fatty acid amide and ethylene double fatty acid amide provided with a polar group; the dispersing agent II is high molecular weight alkyl ammonium salt copolymer; and the dispersing agent III is copolymer with an acid group. According to the halogen-free flame retardant polypropylene (PP) material disclosed by the invention, the compatibility of components is greatly improved.

Description

technical field [0001] The present invention relates to a halogen-free flame-retardant PP material; more specifically, the present invention relates to a Background technique [0002] Polypropylene (PP) is a general-purpose plastic with large output, low density, low price, and excellent performance. Modified PP is currently widely used in automobiles, building materials, electrical and electronic components, textile accessories, and various pipe fittings. Wait. However, since PP is a flammable polymer material, its use is limited in situations where flame retardancy is required. In order to meet the flame retardant requirements, flame retardants compounded with halogen-containing organic compounds and antimony trioxide are mainly used in the domestic market to produce flame-retardant PP. Nearly 80% of the flame retardants used in domestic plastic modification are halogen-containing flame retardants, of which Represented by polybrominated diphenyl ethers and polybrominated...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K13/02C08K5/20
Inventor 蒋世平陈燕东
Owner FSPG HI TECH
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