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High-performance flame-retardant SEBS graft polymer and preparation method thereof

A graft polymer, high-performance technology, applied in the field of graft polymer preparation, can solve problems such as performance degradation, achieve the effect of optimizing material performance, improving product quality, and optimizing heating effect

Inactive Publication Date: 2019-09-13
JIANGSU HENGFENG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of a large amount of flame retardants leads to a significant decrease in the performance of the SEBS composite system, such as tensile strength and elongation at break, compared with that without adding flame retardants

Method used

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  • High-performance flame-retardant SEBS graft polymer and preparation method thereof
  • High-performance flame-retardant SEBS graft polymer and preparation method thereof
  • High-performance flame-retardant SEBS graft polymer and preparation method thereof

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Embodiment 1

[0044] see figure 1 , a high-performance flame-retardant SEBS graft polymer, including SEBS (YH-503, 33% styrene content), 32# white oil, graft monomers and initiators, graft monomers include bistrimethylsilane Vinyl phosphate and Z-hydroxyethyl methacrylate phosphate, the initiator includes dibenzoyl peroxide (BPO), in parts by mass: SEBS (YH-503, styrene content 33%) 100 50 parts of 32# white oil, 8-10 parts of bistrimethylsilylated vinyl phosphate, 3-5 parts of Z-hydroxyethyl methacrylate phosphate, 0.5 parts of dibenzoyl peroxide (BPO) -0.7 copies.

[0045] A kind of high-performance flame-retardant SEBS graft polymer, its preparation method is:

[0046] S1. Weigh SEBS and 32# white oil according to the formula, then add the weighed SEBS and 32# white oil into a high-speed mixer running at a speed of 60r / min (the high-speed mixer has 60r / min and 120r / min Two rotation speeds), in order to make the oil filling uniform and prevent the filled oil from leaking out, the low s...

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Abstract

The invention discloses a high-performance flame-retardant SEBS graft polymer and a preparation method thereof, and belongs to the technical field of graft polymer preparation. A twin-screw extruder is adopted for the method of a melt grafting reaction. Due to the existence of silicon and phosphorus in the SEBS molecule of a SEBS polymer prepared after the graft reactive extrusion and since the silicon and phosphorus have excellent synergistic flame retardant effect, carbonization of the SEBS flame-retardant system and compactness and flame retardancy of the carbon-layer structure are greatlyimproved. Thereby, the prepared SEBS polymer has high flame retardant property, and high mechanical properties of the SEBS can be maintained. The screw of the twin-screw extruder is provided with a mutation section, and the mutation section adopts a variable-diameter and variable-lead structure. When a material is being heated to the highest temperature in the mutation section, the material is compressed, and throughput of the material is reduced. Thereby, less heating is realized, the material is promoted to be fully heated, and the heating effect of the material is enhanced. And then, the quality of the extruded product is improved, and performance optimization of the material is realized.

Description

technical field [0001] The invention relates to the technical field of graft polymer preparation, in particular to a high-performance flame-retardant SEBS graft polymer and a preparation method thereof. Background technique [0002] Graft copolymer (Graft copolymer): A copolymer in which some atoms of the polymer main chain are connected with side chains of polymer segments with different chemical structures from the main chain. There are two main types of graft polymer synthesis: [0003] Method 1. Activate a pre-polymerized polymer by chemical or physical chemical methods to generate an active center (indicated by *) on the main chain. It can be a free radical, or a positive or negative ion, and then it can trigger the monomer M polymerizes to generate graft copolymers, and this method is called the method of grafting branches on the macromolecules; [0004] Method 2. Through the polymerization of monomer M, when it still has reactivity (such as negative ion polymerizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F287/00C08F230/02C08L51/00C08L91/06B29C48/92
CPCB29C48/92B29C2948/92704C08F287/00C08L51/006C08L2201/02C08F230/02C08L91/06
Inventor 储强周亮张建康丁金兰
Owner JIANGSU HENGFENG CABLE
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