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Preparation method of thermotolerant high-elasticity halogen-free flame-resistant thermoplastic elastomer

A thermoplastic elastomer and high-elasticity technology is applied in the field of preparation of temperature-resistant high-elasticity halogen-free flame-retardant thermoplastic elastomer, which can solve the problems of difficulty in preparing halogen-free flame-retardant thermoplastic elastomer, poor temperature resistance, and decreased elasticity. To achieve the effect of enhancing synergistic effect, improving heat resistance and improving flame retardant performance

Inactive Publication Date: 2010-10-27
BEIJING CHENGLIANKAIDA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many deficiencies in the above preparation of halogen-free flame-retardant thermoplastic elastomers. First, the temperature resistance of EVA / PE, SEBS / SBS / PP, SEBS / SBS / PE and other systems is poor, and it is difficult to prepare halogen-free thermoplastic elastomers with operating temperatures exceeding 80°C. Flame-retardant thermoplastic elastomers; secondly, in order to obtain high-flame-retardant thermoplastic elastomers, a large amount of halogen-free flame retardants must be added. The addition of a large amount of halogen-free flame retardants will make the mechanical properties of thermoplastic elastomers, especially the high elasticity. Therefore, it is difficult to prepare thermoplastic elastomers with high flame retardancy and high mechanical properties

Method used

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  • Preparation method of thermotolerant high-elasticity halogen-free flame-resistant thermoplastic elastomer
  • Preparation method of thermotolerant high-elasticity halogen-free flame-resistant thermoplastic elastomer

Examples

Experimental program
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Effect test

Embodiment 1

[0043] 1) 153.94g of inorganic flame retardant Mg(OH) 2 Add 6.16g of stearic acid into a high-speed mixer, heat up to 80°C, and stir at a high speed of 900 rpm for 5 minutes to obtain surface-modified Mg(OH) 2 ;

[0044] 2) Mix 166.76g of SBS (trade name: SBS 1401-1, provided by Yanshan Petrochemical), 83.39g of SEBS (SEBS 1651, provided by Kraton Company) and 350.20g of paraffin oil (trade name: PW-90), in an oven at 80°C Stirring in medium for 2.5h, obtain the mixture of oil-extended SBS and oil-extended SEBS;

[0045] 3) The surface modified Mg(OH) 2 , a mixture of oil-extended SBS and oil-extended SEBS, 134.69g polypropylene (trade name: PP 1300, provided by Yanshan Petrochemical), 102.63g carboxy-modified tetramethyltetraphenylpolysiloxane pellets, 0.125g diisoperoxide Propylbenzene (DCP), 0.125g divinylbenzene (DVB), 2g antioxidant (trade name: antioxidant 1010) are mixed homogeneously to obtain a raw material mixture, and the raw material mixture is dropped into a sc...

Embodiment 2

[0047] 1) 313.72g of inorganic flame retardant Al(OH) 3 Add 3.14g of titanate coupling agent into a high-speed mixer, and stir at a high speed of 900 rpm for 5 minutes at room temperature to obtain surface-modified Al(OH) 3 ;

[0048] 2) Mix 189.11g of SBS 1401-1, 63.04g of SEBS 1651 and 252.12g of paraffin oil PW-90, and stir in an oven at 80°C for 2.5h to obtain a mixture of oil-extended SEBS and oil-extended SBS;

[0049] 3) Surface modified Al(OH) 3 , the mixture of oil-extended SEBS and oil-extended SBS, 140g high-density polyethylene (trade name: HDPE 5000S, provided by Yanshan Petrochemical), 34.86g ethanol-modified methylphenylpolysiloxane, 1.26g1, 4-bis( tert-butylperoxydiisopropyl) benzene, 0.63g p-benzoquinone dioxime, 2g antioxidant 1010 mix homogeneously, obtain the raw material mixture, and the raw material mixture is dropped into the twin-screw that the screw rod diameter is 25, and the length-to-diameter ratio is 56 In the extruder, at a speed of 700r / min, r...

Embodiment 3

[0051] 1) 143.09g of inorganic flame retardant Mg(OH) 2 Add 2.87g of KH570 into a high-speed mixer, and stir at a high speed of 900 rpm at room temperature for 5 minutes to obtain surface-modified Mg(OH) 2 ;

[0052] 2) Mix 231.81g of SBS 1401-1, 77.27g of SEBS 1651 and 278.17g of paraffin oil PW-90, and stir in an oven at 80°C for 2.5h to obtain a mixture of oil-extended SEBS and oil-extended SBS;

[0053] 3) The surface modified Mg(OH) 2 , a mixture of oil-extended SEBS and oil-extended SBS, 120.20g PP 1300, 143.09g acrylic modified dimethyl polysiloxane, 0.619g 1,3-bis(tert-butylperoxydiisopropyl)benzene , 0.927g diacrylquinone o-phthalate, 2g antioxidant 1010 mix homogeneously, obtain the raw material mixture, the raw material mixture is put into the twin-screw extruder that screw rod diameter is 25, aspect ratio is 56, with 700r / min The rotation speed was 180°C, and reaction extrusion granulation was carried out to obtain a temperature-resistant high-elasticity halogen...

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Abstract

The invention relates to a preparation method of a thermotolerant high-elasticity halogen-free flame-resistant thermoplastic elastomer, belonging to a preparation method of a halogen-free flame-resistant thermoplastic elastomer. The flame resistance and the mechanical property of the halogen-free flame-resistant thermoplastic elastomer can be synchronously possessed in the prior art. In the invention, inorganic flame retardant with modified surface, flame-retardant synergist having a Lewis acid and base reaction with the inorganic flame retardant, an elastomer filled with oil, thermoplastic resin, peroxide initiator, auxiliary crosslinking agent and chemical inhibitor are reacted and extruded by a double screw extruder after being mixed and stirred uniformly, thereby realizing the micro-crosslinking of the elastomer and the dispersion of the flame retardant so as to obtain the thermotolerant high-elasticity halogen-free flame-resistant thermoplastic elastomer. By the preparation method, the mechanical property, the temperature toleration and the flame resistance of the halogen-free flame-resistant thermoplastic elastomer are improved, the mechanical property of the halogen-free flame-resistant thermoplastic elastomer is about 2 times of that of the same prepared by a traditional preparation technology, the halogen-free flame-resistant thermoplastic elastomer does not deform under the temperature of 80 DEG C and is two times the conservation rate of the mechanical property of the same prepared by the traditional preparation technology after being aged for 360h under the temperature of 80 DEG C.

Description

technical field [0001] The invention relates to a preparation method of a halogen-free flame-retardant thermoplastic elastomer, in particular to a preparation method of a temperature-resistant high-elasticity halogen-free flame-retardant thermoplastic elastomer. Background technique [0002] For a long time, most of the flame retardants used in flame-retardant thermoplastic elastomers are brominated flame retardants. However, because brominated flame retardants may harm the environment in the process of production and use, the international community has been debating whether to ban the use of decabromodiphenyl ether flame retardant systems. Therefore, world-renowned flame retardant manufacturers have developed environmentally friendly brominated flame retardants. At present, part of the decabromodiphenyl ether market has been replaced by decabromodiphenylethane in the world, but due to the halogen flame retardant system There is generally a large amount of combustion smoke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/02C08L23/02C08L25/06C08K13/06C08K9/04C08K3/22C08K5/01C08K5/14C08L83/04
Inventor 米永存曹建芳宋铁生范东飞米鑫宋雄杰
Owner BEIJING CHENGLIANKAIDA TECH