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A kind of polyvinyl chloride toughened reinforced masterbatch and its preparation method and application

A technology of toughening and reinforcing masterbatch and polyvinyl chloride, which is applied in the field of polymer material processing, can solve the problems of difficult twin-screw extrusion melt intercalation technology, ineffective dispersion of mineral phases, and weak interfacial interaction force, etc., to achieve Good synergistic toughening effect, easy to realize, and simple preparation method

Active Publication Date: 2017-10-13
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The crux of the problem lies in: the compatibility of PVC and layered mineral powder is poor, it is difficult to mix effectively, the mineral phase cannot be effectively dispersed in PVC, the phase domain control is difficult, and the interface interaction force is weak; PVC is easy to shear and degrade during processing. Twin-screw extrusion melt intercalation technology is difficult to apply to the preparation of PVC / layered mineral powder composites

Method used

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  • A kind of polyvinyl chloride toughened reinforced masterbatch and its preparation method and application
  • A kind of polyvinyl chloride toughened reinforced masterbatch and its preparation method and application
  • A kind of polyvinyl chloride toughened reinforced masterbatch and its preparation method and application

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Effect test

Embodiment 1

[0048] The preparation method of polyurethane: according to the formulation design of the hard segment ratio design value of 45% in Table 1, the measured PCL is placed in a polytetrafluoroethylene reactor, and the measured MDI is stirred for 30 minutes at a temperature of 50 ° C. Slowly drop it into the polytetrafluoroethylene reaction kettle, stir for 30 minutes at a temperature of 60°C (if the reaction rate is too fast, add acetone dropwise to reduce the viscosity), and then react with the polytetrafluoroethylene under stirring conditions. Add a measured amount of chain extender 1,4-BDO into the kettle, stir and react for 30 minutes at a temperature of 70°C, and finally place the reacted product in a polytetrafluoroethylene tray, and ripen it for 4 hours at a constant temperature of 110°C to obtain Polyurethane.

Embodiment 2

[0050] The preparation method of polyurethane: according to the formulation design of the hard segment ratio design value of 50% in Table 1, the measured PCL is placed in a polytetrafluoroethylene reactor, and the measured MDI is stirred for 20 minutes at a temperature of 60 ° C. Slowly drop into the polytetrafluoroethylene reaction kettle, stir for 20min at a temperature of 70°C (if the reaction rate is too fast, acetone can be added dropwise to reduce the viscosity), and then react with the polytetrafluoroethylene under stirring conditions. Add a measured amount of chain extender 1,4-BDO into the kettle, stir and react at 80°C for 20 minutes, and finally place the reacted product in a polytetrafluoroethylene tray, and mature it at a constant temperature of 130°C for 2 hours to obtain Polyurethane.

Embodiment 3

[0052] The preparation method of polyurethane: according to the formulation design of the hard segment ratio design value of 55% in Table 1, the measured PCL is placed in a polytetrafluoroethylene reactor, and the measured MDI is stirred for 25 minutes at a temperature of 55 ° C. Slowly drop it into the polytetrafluoroethylene reaction kettle, stir for 25 minutes at a temperature of 65°C (if the reaction rate is too fast, acetone can be added dropwise to reduce the viscosity), and then react with the polytetrafluoroethylene under stirring conditions. Add a measured amount of chain extender 1,4-BDO into the kettle, stir and react for 25 minutes at a temperature of 75°C, and finally place the reacted product in a polytetrafluoroethylene tray, and mature it for 3 hours at a constant temperature of 120°C to obtain Polyurethane.

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Abstract

The invention discloses a polyvinyl chloride toughened and reinforced masterbatch, which is made of the following raw materials in weight percentage: 5%-40% of thermoplastic elastomer, 5%-40% of modified kaolin, and 0%-20% of processing aid , and the balance is polyvinyl chloride. The invention also discloses the preparation method and application of the master batch. The polyvinyl chloride toughened and reinforced masterbatch of the present invention adopts polyurethane thermoplastic elastomer as raw material, combined with modified kaolin, there is good interfacial interaction between modified kaolin, polyurethane thermoplastic elastomer and matrix resin, and can effectively transfer stress, thereby Significantly improve the impact strength and tensile properties of polyvinyl chloride, add the masterbatch to polyvinyl chloride, and process it to prepare high-strength and high-toughness polyvinyl chloride nanocomposites, and the tensile strength of the prepared polyvinyl chloride nanocomposites Up to 53.1MPa or more, the elongation at break is over 220%, and the notched impact strength is over 12.3kJ / m2.

Description

technical field [0001] The invention belongs to the technical field of polymer material processing, and in particular relates to a polyvinyl chloride toughened and reinforced masterbatch, a preparation method and application thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized plastic varieties in the world. Since the 1930s, PVC has attracted the attention of various industrialized countries for its excellent comprehensive performance and low price, and has maintained a long-lasting development momentum. According to reports, the global production capacity in 2014 has exceeded 100 million tons. At present, my country is the largest production and application country of PVC. By the end of 2014, the production capacity and output reached more than 26 million tons and more than 16 million tons respectively. [0003] PVC has the advantages of flame retardant, chemical corrosion resistance, wear resistance, excellent electrical i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L75/06C08L23/28C08K9/04C08K9/06C08K3/34C08G18/10C08G18/66C08G18/42C08G18/32C08G18/76
CPCC08G18/10C08G18/3206C08G18/4277C08G18/664C08G18/7671C08L27/06C08L2205/03C08L75/06C08L23/286C08K9/04C08K9/06C08K3/346
Inventor 李侃社牛红梅周远汪晓芹陈创前康洁李锦闫兰英朱雪丹
Owner XIAN UNIV OF SCI & TECH
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