Halogen-free flame-retardant TPO elastomer material and preparation method thereof

A technology of elastomer materials and raw materials, applied in the field of halogen-free flame-retardant TPO elastomer materials and its preparation, can solve problems such as limiting the use range of TPO, achieve significant economic benefits, improve processability, and facilitate processing and manufacturing

Inactive Publication Date: 2018-06-26
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Blending compound type also includes mechanical blending method and dynamic vulcanization method. Mechanical blending method is the most mature TPO production process. This method uses twin-screw extruder to blend and extrude elastomer or rubber with polyolefin. Simple, low cost; at the same time, a certain amount of oil (paraffinic base oil, naphthenic oil) is filled in the TPO system to improve processability and greatly reduce cost, but because each component in the system is flammable material, greatly limits the scope of use of TPO

Method used

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  • Halogen-free flame-retardant TPO elastomer material and preparation method thereof
  • Halogen-free flame-retardant TPO elastomer material and preparation method thereof
  • Halogen-free flame-retardant TPO elastomer material and preparation method thereof

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preparation example Construction

[0038] The present invention also discloses a preparation method of the above-mentioned halogen-free flame-retardant TPO elastomer material, comprising the following steps:

[0039] (1) Take the parts by weight of the above-mentioned raw materials respectively, and set them aside for use; first divide the white oil into several equal parts, and add them to the SEBS in portions, after adding the white oil each time, Mix evenly in a high-mixer; after all the white oil is added, let stand to obtain a mixture;

[0040] (2) In the mixture, add the described LLDPE, the described homopolymer PP, the described MCA, the described triphenyl phosphate, the described aluminum hypophosphite, the described antioxidant and The coupling agent is mixed in a high-speed mixer; then extruded and granulated by a twin-screw extruder to obtain the halogen-free flame-retardant TPO elastomer material.

Embodiment 1

[0050] (1) Take by weighing 20 parts of SEBS and 30 parts of paraffin-based white oil, then divide the weighed white oil into three equal parts and add in SEBS gradually, add the mixture of SEBS and white oil at high temperature after each addition of white oil Mix in the mixer for 5 minutes, and finally let the mixed mixture stand for 24 hours;

[0051] (2) Weigh 35 parts of LLDPE with a melt index of 5g / 10min, 15 parts of homopolymerized PP with a melt index of 10g / 10min, 15 parts of MCA, 4 parts of triphenyl phosphate, 4 parts of aluminum hypophosphite, and 0.3 parts of antioxidant agent (the composite system of antioxidant 1010 and antioxidant 168, the mass ratio is 2: 1), 0.5 parts of KH550, mix it with the SEBS mixture in step (1) in a high mixer for 5 minutes;

[0052] (3) Extrude and granulate the mixture in step (2) with a twin-screw extruder to obtain a halogen-free flame-retardant TPO elastomer.

Embodiment 2

[0054] (1) take by weighing 15 parts of SEBS and 30 parts of naphthenic white oils, then divide the weighed white oils into three equal parts and add in SEBS gradually, add the mixture of SEBS and white oils at every turn after adding white oils Mix in a high mixer for 5 minutes, and finally let the mixed mixture stand for 24 hours;

[0055] (2) Weigh 35 parts of LLDPE with a melt index of 2g / 10min, 15 parts of homopolymerized PP with a melt index of 5g / 10min, 10 parts of MCA, 2 parts of triphenyl phosphate, 2 parts of aluminum hypophosphite, 0.1 part of antioxidant agent (the composite system of antioxidant 1010 and antioxidant 168, the mass ratio is 2:1), 0.2 parts of KH560, mix it with the SEBS mixture in step (1) in a high mixer for 5 minutes;

[0056] (3) Extrude and granulate the mixture in step (2) with a twin-screw extruder to obtain a halogen-free flame-retardant TPO elastomer.

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Abstract

The invention discloses a halogen-free flame-retardant TPO elastomer material. The halogen-free flame-retardant TPO elastomer material is prepared from 15-45 parts by weight of LLDPE, 8-15 parts by weight of homopolymerized PP, 15-30 parts by weight of SEBS, 30-45 parts by weight of white oil, 10-20 parts by weight of MCA, 2-5 parts by weight of triphenyl phosphate, 2-5 parts by weight of aluminumhypophosphite, 0.1-0.5 parts by weight of an antioxidant and 0.2-1 part by weight of a coupling agent. The invention also discloses a preparation method of the halogen-free flame-retardant TPO elastomer material. The halogen-free flame-retardant TPO elastomer material utilizes SEBS modified by LLDPE and homopolymerized PP as a base, has the elastic properties of rubber and thermoplastic properties of plastic, is easy to prepare, realizes recovery and recycling of leftover materials, realizes a high limit oxygen index under a small amount of a halogen-free flame retardant, realizes a low cost,is easy to process and can be widely used in the automotive industry and civil sealing fields.

Description

technical field [0001] The invention belongs to the technical field of TPO elastomer materials, in particular to a halogen-free flame-retardant TPO elastomer material and a preparation method thereof. Background technique [0002] Thermoplastic elastomers are a class of polymer materials that not only have the properties of rubber, but also can be plasticized, and have the characteristics of both rubber and plastic. Thermoplastic elastomers mainly include six categories: polyolefin thermoplastic elastomers (TPO); polyurethane thermoplastic elastomers; styrene thermoplastic elastomers; polyvinyl chloride thermoplastic elastomers; polyester thermoplastic elastomers; polyamides thermoplastic elastomer. [0003] TPO has excellent weather resistance, UV resistance, good temperature resistance and impact resistance. It can be molded and processed by ordinary thermoplastic processing equipment and has the advantages of reusability. It has developed rapidly and has become the faste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/12C08L53/02C08L91/06C08K13/02C08K5/3492C08K5/523C08K3/32C08K5/134C08K5/526C08K5/544C08K5/5425C08K5/5435
CPCC08L23/0815C08L91/06C08L2201/02C08L2201/22C08L2205/02C08L2205/035C08L23/12C08L53/025C08K13/02C08K5/3492C08K5/523C08K3/32C08K5/1345C08K5/526C08K5/544C08K5/5425C08K5/5435
Inventor 杨桂生田文伟李兰杰
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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