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High-toughness corrosion-resistant PBT (Polybutylene Terephthalate)/PET (Polyethylene Terephthalate) alloy and preparation method thereof

A technology of alloy and toughening agent, applied in the field of high-toughness PBT/PET alloy and its preparation, can solve the problems of poor corrosion resistance and achieve good corrosion resistance

Inactive Publication Date: 2016-07-20
WUXI JIABANG ELECTRIC POWER PIPE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of poor corrosion resistance existing in the existing high-toughness PBT / PET alloy, the invention provides a PBT / PET alloy and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of epoxy-modified alcohol esters:

[0028] The raw materials bisphenol A epoxy resin, maleic anhydride and ethylene glycol are added to the reactor in a mass ratio of 3:1:1 under a nitrogen atmosphere, and the reaction is carried out at 110°C for 30-40min, and then hydrochloric acid 7 ~8 drops, and continue to react for 50 minutes to obtain epoxy-modified alcohol ester.

[0029] Preparation of PBT / PET alloy:

[0030] 35 parts of PBT, 45 parts of PET, 13 parts of dihydroxy polydiphenylsiloxane, 13 parts of epoxy modified alcohol ester, 8 parts of glycidyl methacrylate graft polystyrene, 3 parts of sodium benzoate and ethylene-sodium methacrylate compound, 2 parts of carbodiimide, 2 parts of TAS-2A and 2 parts of hindered phenol antioxidant 1076 and phosphite antioxidant 168 Put the compound into a high-speed mixer and stir for 5 to 30 minutes to make it fully mixed evenly, then add it to a twin-screw extruder, plasticize, mix and extrude at 210°C to 260°C, ...

Embodiment 2

[0033] Preparation of epoxy-modified alcohol esters:

[0034] The raw materials bisphenol A epoxy resin, maleic anhydride and ethylene glycol are added to the reactor in a mass ratio of 3:1:1 under a nitrogen atmosphere, and the reaction is carried out at 100°C for 30-40min, and then hydrochloric acid is added dropwise for 5 minutes. ~7 drops, and continue to react for 60 minutes to obtain epoxy-modified alcohol ester.

[0035] Preparation of PBT / PET alloy:

[0036] 30 parts of PBT, 50 parts of PET, 10 parts of dihydroxy polydiphenylsiloxane, 10 parts of epoxy modified alcohol ester, 10 parts of glycidyl methacrylate grafted polystyrene, The compound of 5 parts of sodium benzoate and ethylene-sodium methacrylate ionomer, 1 part of carbodiimide, 1 part of TAS-2A and 1 part of hindered phenol antioxidant 1076 and phosphite antioxidant 168 Put the compound into a high-speed mixer and stir for 5 to 30 minutes to make it fully mixed evenly, then add it to a twin-screw extruder, p...

Embodiment 3

[0039] Preparation of epoxy-modified alcohol esters:

[0040] The raw materials bisphenol A epoxy resin, maleic anhydride and ethylene glycol are added to the reactor in a mass ratio of 3:1:1 under a nitrogen atmosphere, and the reaction is carried out at 120°C for 30-40min, and then hydrochloric acid 8 ~10 drops, continue to react for 30 minutes to obtain epoxy-modified alcohol ester.

[0041] Preparation of PBT / PET alloy:

[0042]40 parts of PBT, 40 parts of PET, 15 parts of dihydroxy polydiphenylsiloxane, 15 parts of epoxy modified alcohol ester, 5 parts of glycidyl methacrylate grafted polystyrene, 2 parts of sodium benzoate and ethylene-sodium methacrylate ionomer compound, 3 parts of carbodiimide, 3 parts of TAS-2A and 3 parts of hindered phenol antioxidant 1076 and phosphite antioxidant 168 Put the compound into a high-speed mixer and stir for 5 to 30 minutes to make it fully mixed evenly, then add it to a twin-screw extruder, plasticize, mix and extrude at 210°C to 2...

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Abstract

The invention provides a high-toughness corrosion-resistant PBT (Polybutylene Terephthalate) / PET (Polyethylene Terephthalate) alloy and a preparation method thereof. The PBT / PET alloy is prepared from the following components in parts by weight: 30-40 parts of PBT, 40-50 parts of PET, 10-15 parts of dihydroxypolydiphenylsiloxane, 10-15 parts of epoxy modified alcohol ester, 5-10 parts of toughening agent, 2-5 parts of compound nucleating agent, 1-3 parts of hydrolysis resistant agent, 1-3 parts of lubricating agent and 1-3 parts of antioxidant. The dihydroxypolydiphenylsiloxane and the epoxy modified alcohol ester are added and coordinate with each other, and the using amount ratio of the raw materials is adjusted, so that the prepared PBT / PET alloy has high corrosion resistance under the condition of keeping high toughness.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-toughness PBT / PET alloy and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is an engineering plastic that developed rapidly in the 1970s. It has good comprehensive properties, heat resistance and fatigue resistance, and has a fast crystallization speed. With good performance, it has been widely used in automobile, mechanical equipment, electronic and electrical manufacturing industries, and has become an important member of the five major engineering plastics. However, PBT notched impact strength is low and molding shrinkage is large. [0003] Polyethylene terephthalate (PET) is a cost-effective engineering plastic with low price and excellent heat resistance, chemical resistance, electrical insulation and mechanical properties. However, PET is brittle, has poor notched impact performance, and slow crystallization r...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L83/06C08L63/00C08K5/00C08K5/098C08K5/29C08K5/134C08K5/526C08G59/14
CPCC08L67/02C08G59/1438C08L2205/025C08L2205/035C08L83/06C08L63/00C08K5/00C08K5/098C08K5/29C08K5/1345C08K5/526
Inventor 徐德生
Owner WUXI JIABANG ELECTRIC POWER PIPE FACTORY