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Thermoplastic polyether ester elastomer composition as well as preparation method and application thereof

A technology of thermoplastic polyether ester and polyether ester elastomer, which is applied in the field of thermoplastic polyether ester elastomer composition and its preparation, can solve the problem of insufficient resilience, low tensile strength, and low price of polyether ester elastomer High quality and other issues, to achieve low production cost, high elongation at break, improve processing performance and mechanical properties

Active Publication Date: 2014-05-14
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when polyether ester elastomers are used as elastic gaskets for rail transit, there is a defect of insufficient resilience. In addition, its own tensile strength is also low, which cannot meet the growing demand for low-priced and high-quality polyether ester elastomers. needs

Method used

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  • Thermoplastic polyether ester elastomer composition as well as preparation method and application thereof
  • Thermoplastic polyether ester elastomer composition as well as preparation method and application thereof
  • Thermoplastic polyether ester elastomer composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] Preparation of polycaprolactone polyol (B-PCL):

[0049] Heat a clean and dry four-necked flask in an oil bath at 120°C, and at the same time pass nitrogen to remove impurities such as moisture and oxygen in the flask; raise the temperature of the oil bath to 140°C~160°C, and add caprolactone monomer , Initiator trimethylolpropane or pentaerythritol and catalyst butyl titanate, under nitrogen protection, temperature control and stirring reaction for 6 h ~ 8 h, stop heating, continue stirring with nitrogen, stop when the temperature of the reactant drops below 60 °C The reacted polycaprolactone is cooled under the protection of nitrogen, dissolved in chloroform, reprecipitated with methanol, vacuum-dried at 40°C after suction filtration, and the number-average molecular weight is 2000.

[0050] Synthesis of polyetherester elastomer (TPEE):

[0051] According to the formula shown in Table 1, add DMT, BDO and B-PCL, polytetrahydrofuran diol (Mn=1000) into the reaction ...

Embodiment 1-9、 comparative example 1-4

[0055] According to the ratio of each component shown in Table 2, add TPEE, epoxy resin, antioxidant, processing aid, etc. Extruded and granulated to obtain thermoplastic elastomer TPEE modified material, the performance test results are shown in Table 2.

[0056] Table 2 embodiment 1-9 and comparative example 1-4 concrete proportioning and test performance result

[0057]

[0058] From the comparison of the results of Example 1 and Comparative Example 1, Example 4 and Comparative Example 2, it can be seen that adding a small amount of epoxy resin to the polyetherester elastomer can reduce the melt index of the composition and improve the tensile strength of the material. Strength, its elongation at break is also more appropriate, and it has better resilience.

[0059] From the comparison of Example 6 and Comparative Example 3, it can be seen that the addition of excessive epoxy resin in Comparative Example 3 greatly reduces the elongation at break of the material and affe...

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Abstract

The invention discloses a thermoplastic polyether ester elastomer composition as well as a preparation method and application thereof. The thermoplastic polyether ester elastomer composition comprises 80-100 parts of polyether ester elastomer and 0.1-2 parts of epoxy resin. The preparation method comprises the steps of adding the components to a high-speed mixer so as to be mixed at a high speed, and then adding the mixture to a double-screw extruder so as to be subjected to extruding granulation at 210-250 DEG C, thus obtaining the thermoplastic polyether ester elastomer composition. The thermoplastic polyether ester elastomer composition and the preparation method have the beneficial effects that by adding the epoxy resin to modify the polyether ester elastomer, the melt index of the material can be obviously reduced, the tensile strength of the material can be improved, the elongation at break of the material is relatively high, and the material has good resilience effect and good dynamic / static stiffness; the process is simple, and the production cost is relatively low; the thermoplastic polyether ester elastomer composition can be used in the fields such as track traffic gaskets and the like.

Description

Technical field [0001] The present invention is a plastic modification field, which involves a thermoplastic polyettic ether elastic composition and its preparation methods and applications. Background technique [0002] The thermoplastic polyettic ether elastic bodies (TPEE) both have the characteristics of rubber and thermoplastic engineering plastic. At room temperature, the rubber characteristics are presented, and the characteristics of thermoplastic plastic are shown at high temperatures, which can be plasticized and easy to process.Its molecular structure is composed of two parts: hard segment (aromatic polyester) and soft segment (polyether / polyester).The rigidity, polarity and crystallization of the hard chain segment make it have good high temperature performance and oil resistance and anti -solventability. The low glassized temperature and saturation of the soft chain segment polyether make it have excellent low temperature performance and anti -aging.sex.Widely used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L33/14C08K3/04C08G63/66C08G63/78B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/92895
Inventor 欧阳春平焦建赵巍苑仁旭徐依斌曾祥斌蔡彤旻夏世勇
Owner KINGFA SCI & TECH CO LTD
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