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PEB-g-SAN toughener and preparation method thereof as well as engineering plastics AEBS

A technology of toughening agent and initiator, applied in the field of engineering plastics AEBS, can solve the problems of large equipment investment, high production cost, large solvent consumption, etc., and achieve the effects of easy heat transfer, improved notched impact strength, and improved compatibility.

Active Publication Date: 2009-10-21
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The significant disadvantage of the solution method is that the solvent consumption is large, the solvent accounts for more than 80wt% of the total mass of the polymerization system, and the product needs to be precipitated with a large amount of methanol or ethanol, and the recovered waste liquid is a mixture of solvent, residual monomer and methanol or ethanol. The process of separation, purification and reuse of components is complicated, and the investment in equipment is large, resulting in high production costs

Method used

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  • PEB-g-SAN toughener and preparation method thereof as well as engineering plastics AEBS
  • PEB-g-SAN toughener and preparation method thereof as well as engineering plastics AEBS
  • PEB-g-SAN toughener and preparation method thereof as well as engineering plastics AEBS

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Experimental program
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Embodiment 1

[0028] The basic formula and implementation formula of embodiment 1 are as shown in table 1. The synthesis operation process of PEB-g-SAN when the St / AN feeding mass ratio is 65 / 35 is as follows:

[0029]A 1000mL four-neck flask was used as the reactor, equipped with a stirrer, an automatic temperature control oil bath heating device, a reflux pipe, a nitrogen pipe and a material thermometer. Add 80g of toluene and 55g of PEB into the four-necked flask, and stir for 4 to 6 hours to dissolve them into a uniform glue. Add 29.25g of styrene and 15.75g of acrylonitrile mixed monomers into the glue, and stir for 1 hour to make the system a uniform solution. Add 1g of BPO and 0.108g of SDS into the solution and stir for 10 minutes to make it evenly mixed. Begin to drop 54g of 2wt% PVA aqueous solution into the PEB / St-AN solution system, the PVA aqueous solution was added dropwise within 15 minutes, during which the stirring speed was slowly increased to 800 rpm, and then 217.08g o...

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Abstract

The invention discloses a PEB-g-SAN toughener and a preparation method thereof as well as engineering plastics AEBS. In the invention, ethylene-butylene copolymer (PEB) serves as grafting substrate and styrene (St) and acrylonitrile (AN) serve as grafting monomers; under the condition of the existence of organic solvent, a suspension graft copolymerization technology can be used for preparing graft copolymer PEB-g-SAN with the PEB content of 40-60wt%. The monomer conversion rate of a graft copolymerization system is 85-95%. The synthesized PEB-g-SAN can be mixed with SAN resin to prepare the high-impact engineering plastics AEBS with excellent weather aging yellowing resistant property, and the notch impact strength of the AEBS is 2-52.5kJ / m.

Description

technical field [0001] The invention relates to a preparation technology of graft copolymer PEB-g-SAN toughening agent and engineering plastic AEBS prepared by blending with SAN resin. Background technique [0002] PEB-g-SAN is a graft copolymer of ethylene-1-butene copolymer (PEB) and styrene-acrylonitrile (St-AN). AEBS prepared by melt blending PEB-g-SAN and SAN resin is a high-impact engineering plastic with excellent resistance to weathering and yellowing. AEBS resin is developed for the high-cis butadiene rubber used in butadiene rubber and St-An graft copolymer (ABS) contains a large number of carbon-carbon double bonds that are easy to oxidize, which leads to poor weathering and yellowing performance of ABS. Styrenic toughened resin. At present, only a few companies such as Copolymer-Rubber Company, Japan Idemitsu Petroleum Company, JSR Company and German Bayer produce similar products such as EPDM and St-AN mixed monomer graft copolymer (AES) in the world. The rub...

Claims

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Application Information

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IPC IPC(8): C08F255/10C08F2/20C08L25/12C08L51/06
Inventor 王炼石吴敌朱勇平蔡彤旻张安强曾祥斌
Owner KINGFA SCI & TECH CO LTD
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