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Toughened reinforced environment-friendly flame-retardant PBT/PET (polybutylene terephthalate/polyethylene terephthalate) alloy

An environmentally friendly and toughening technology, which is applied in the field of toughened and enhanced environmentally friendly flame-retardant PBT and PET alloys, can solve the problems of low notched impact strength, low heat distortion temperature, and limited applications, and achieve good fluidity and high gloss. Notched impact strength, excellent mechanical effect

Inactive Publication Date: 2015-06-03
QINGDAO JIAYIYANG IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PBT and PET alloys are used as engineering plastics, which have disadvantages such as strong notch sensitivity, low notch impact strength, low heat distortion temperature, large shrinkage rate, and poor flame retardancy, which greatly limit their application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A toughened and reinforced environmentally friendly flame-retardant PBT and PET alloy, the composition of which is: 33% of PBT, 20% of PET, 15% of alkali-free glass fiber whose surface has been treated with silane coupling agent, and phosphoric acid ester resistance. Fuel agent 10%, nano calcium carbonate 10%, ethylene-octene copolymer (POE) 5%, maleic anhydride 1%, diethyl azodicarboxylate 0.2%, polyethylene glycol (PEG) 3%, benzene The compound of sodium formate and ethylene-sodium methacrylate ionomer is 0.8%, the compound of hindered phenol antioxidant 1076 and phosphite antioxidant 168 is 0.5%, and TAS-2A is 1.5%.

[0023] Preparation method: (1) Dry PBT at 130°C-140°C for 3-5 hours, PET at 130°C-150°C for 3-4 hours, and phosphate ester flame retardant at 60°C-80°C for 30 hours ~45 minutes, dry nano-calcium carbonate at 60°C-80°C for 30-45 minutes, and set aside; (2) Weigh dry nano-calcium carbonate according to the weight ratio and add it to the barrel at a temper...

Embodiment 2

[0025] A toughened and reinforced environmentally friendly flame-retardant PBT and PET alloy, the components of which are: 30% PBT, 25% PET, 10% alkali-free glass fiber whose surface has been treated with a silane coupling agent, and phosphonate Mixture of flame retardant and polysilane flame retardant 15%, nano calcium carbonate 10%, ethylene-octene copolymer (POE) 5%, maleic anhydride 1%, diethyl azodicarboxylate 0.2%, polyethylene Glycol (PEG) 1.5%, the compound of sodium benzoate and ethylene-sodium methacrylate ion polymer 0.5%, the compound of hindered phenol antioxidant 1076 and phosphite antioxidant 168 0.8%, B Bis stearamide (EBS) 1%.

[0026] Preparation method: (1) Dry PBT at 130°C-140°C for 3-5 hours, PET at 130°C-150°C for 3-4 hours, the mixture of phosphonate flame retardant and polysilane flame retardant Dry at 60°C-80°C for 30-45 minutes, dry nano-calcium carbonate at 60-80°C for 30-45 minutes, and wait for use; (2) Weigh the dry nano-calcium carbonate accordi...

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PUM

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Abstract

The invention discloses a toughened reinforced environment-friendly flame-retardant PBT / PET (polybutylene terephthalate / polyethylene terephthalate) alloy which is composed of the following components in percentage by mass: 20-60% of PBT, 10-40% of PET, 10-25% of glass fiber, 5-15% of halogen-free flame retardant, 5-15% of nano calcium carbonate, 5-10% of elastomer, 0.5-2% of maleic anhydride, 0.1-1% of diethyl azodiformate, 1-5% of plasticizer, 0.1-1% of composite nucleating agent, 0.1-1% of composite antioxidant and 0.1-2% of lubricant. Compared with the prior art, the nano calcium carbonate subjected to surface modification pretreatment and the elastomer interact and generate grafting reaction to form the core-shell particles using the nano calcium carbonate as the core and the elastomer as the shell, and the core-shell particles are used for performing toughening modification on the PBT / PET alloy, thereby greatly enhancing the notch impact strength, rigidity, heat resistance and corrosion resistance of the alloy system and keeping excellent mechanical, chemical and electric properties; the toughened reinforced environment-friendly flame-retardant PBT / PET alloy has the advantages of favorable flowability, high gloss, no halogen, flame retardancy, high safety, low smoke, no toxicity, high efficiency and low cost, achieves the flame retardancy grade UL94V-0, and can be widely used in the fields of home appliances, electronic and electric appliances, automobile industry, mechanical equipment, textiles and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a toughened and reinforced environment-friendly flame-retardant PBT and PET alloy. Background technique [0002] Polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) are thermoplastic polyesters developed in the 1970s. They have high temperature resistance, moisture resistance, chemical corrosion resistance, and electrical insulation properties. Good and good elasticity and other characteristics, and can maintain good mechanical properties in a wide temperature range, has a wide range of applications in the national economy and high-tech industries, is an indispensable new material. PBT resin has a fast crystallization speed and a low glass transition temperature Tg, which is easy to cause uneven heating and cooling, causing deformation; while PET resin has a high glass transition temperature, slow crystallization speed, and long molding cycle. This li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/06C08K9/06C08K9/04C08K7/14C08K3/26B29C47/92B29C48/92
Inventor 不公告发明人
Owner QINGDAO JIAYIYANG IND & TRADE
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