Thermoplastic polyester elastomer composite material and preparation method thereof

A technology of thermoplastic polyester and composite materials, which is applied in the field of polymer materials, can solve the problems of loss of mechanical properties, large processability, rise of melt index, etc., and achieve the effects of small loss of mechanical properties, good processability and improved flame retardancy

Pending Publication Date: 2021-11-23
会通新材料(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding a halogen-free flame retardant to TPEE can improve its flame retardant performance and make it meet the flame retardant requirements, but at the same time it will cause a large loss of mechanical properties, a large rise in melt index, and poor processing performance.

Method used

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  • Thermoplastic polyester elastomer composite material and preparation method thereof
  • Thermoplastic polyester elastomer composite material and preparation method thereof
  • Thermoplastic polyester elastomer composite material and preparation method thereof

Examples

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preparation example Construction

[0041] The present invention provides a kind of preparation method of thermoplastic polyester elastomer composite material as described in any one of the foregoing, comprises the following steps:

[0042] To obtain a dried thermoplastic polyester elastomer, it can be understood that drying is a conventional technique in the art, so there is no special limitation. In one or more embodiments of the present invention, the thermoplastic polyester elastomer is baked at 120°C Dry for 30 minutes;

[0043] Mix the dried thermoplastic polyester elastomer, composite flame retardant, phosphorus-containing epoxy resin, antioxidant, anti-hydrolysis agent and processing aid to obtain a premix. It can be understood that the mixing method in this step , parameters (speed, time, etc.) are not particularly limited, as long as the raw material components are mixed evenly;

[0044] The premixed material is melted, extruded and granulated to obtain a thermoplastic polyester elastomer composite ma...

Embodiment 1-5 and comparative example 1-4

[0054] A: The hardness of the thermoplastic polyester elastomer is 55D.

[0055] B: Self-made composite flame retardant, specifically prepared as 54 parts of diethyl aluminum hypophosphite, 27 parts of melamine phosphate, 10 parts of 3-(2,3 epoxypropyl) propyl trimethoxysilane, SAN package 4 parts of coated PTFE (coating amount 50%) and 5 parts of octadecyltrimethylammonium chloride modified montmorillonite were added into a high-speed mixer at 120°C and mixed evenly, then cooled to normal temperature for later use.

[0056] C: Phosphorus-containing epoxy resin, grade EPO-132, purchased from Suzhou Senfeida Chemical Co., Ltd.

[0057] D1: Tetrakis(Β-(3,5-di-tert-butyl 4-hydroxyphenyl) propionate) pentaerythritol ester (1010), purchased from Chemtura Co., Ltd.;

[0058] D2: 4,4'-bis(α,α-dimethylbenzyl)diphenylamine, brand name Naugard N445, purchased from Chemtura Co., Ltd.

[0059] E: polycarbodiimide, purchased from Kunshan Dingfa Chemical Co., Ltd.

[0060] F1: polyethyle...

Embodiment 6-9

[0075] Mix the raw materials uniformly according to the ratio of each component in Table 3 to obtain a premix; put the premix into a twin-screw extruder to melt, extrude and granulate to obtain a thermoplastic polyester elastomer compound materials, wherein the barrel temperature of the twin-screw extruder is 190°C, the screw speed is 300r / min, and the vacuum degree is -0.1MPa.

[0076] Raw material composition and added mass fraction (%) of table 3 embodiment 6-9

[0077] raw material A B C D E F Example 6 80 9.7 10 0.1 0.1 0.1 Example 7 76 15 8 0.3 0.4 0.3 Example 8 90 8 1 0.3 0.2 0.5 Example 9 70 20 9.1 0.2 0.5 0.2

[0078] In table 3, the components are respectively in each embodiment:

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Abstract

The invention discloses a thermoplastic polyester elastomer composite material and a preparation method thereof. The thermoplastic polyester elastomer composite material is prepared from 70%-90% by mass of a thermoplastic polyester elastomer, 8%-20% by mass of a composite flame retardant, 1%-10% by mass of phosphorus-containing epoxy resin, 0.1%-0.3% by mass of an antioxidant, 0.1%-0.5% by mass of an anti-hydrolysis agent and 0.1%-0.5% by mass of a processing aid; wherein the composite flame retardant is a compound of a phosphorus flame retardant, a nitrogen flame retardant, a silane coupling agent, an anti-dripping agent and montmorillonite. The thermoplastic polyester elastomer composite material has the advantages of excellent flame retardant property, small mechanical property loss, favorable processability and excellent comprehensive properties.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a thermoplastic polyester elastomer composite material and a preparation method thereof. Background technique [0002] Thermoplastic polyester elastomer (TPEE for short) is a kind of linear block copolymer containing PBT (polybutylene terephthalate) polyester hard segment and aliphatic polyester or polyether soft segment. It has the advantages of high mechanical strength, good elasticity, impact resistance, creep resistance, cold resistance, bending fatigue resistance, oil resistance, chemical corrosion resistance and solvent erosion, as well as good processability, and can be filled, reinforced and alloyed. It has been widely used in auto parts, hydraulic hoses, cables and wires, electronic appliances, industrial products, cultural and sports products, biological materials and other fields. However, the limiting oxygen index (LOI) of TPEE is only about 20%...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L63/00C08L27/18C08L25/12C08K9/04C08K3/34C08K5/5313C08K5/3492C08K5/5435C08K13/06
CPCC08L67/00C08L2201/02C08L63/00C08L27/18C08L25/12C08K9/04C08K3/346C08K5/5313C08K5/34928C08K5/5435C08K13/06
Inventor 何晓东孙刚伟
Owner 会通新材料(上海)有限公司
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