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Lightweight low-dielectric-constant TPEE elastomer master batch and preparation method of film

A low dielectric constant and elastomer masterbatch technology, which is applied in the field of lightweight low dielectric constant TPEE elastomer masterbatch and film preparation, can solve the problems of weather resistance degradation and other problems, and achieve improved weather resistance and dielectric loss tangent Value and density reduction, effect of low dielectric constant

Active Publication Date: 2021-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, as the content of polyether soft segments increases, the weather resistance of TPEE elastomers will drop significantly, and they cannot be used for a long time at high temperatures exceeding 100 °C

Method used

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  • Lightweight low-dielectric-constant TPEE elastomer master batch and preparation method of film
  • Lightweight low-dielectric-constant TPEE elastomer master batch and preparation method of film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The monomer formula is shown in Table 1. In a 20-liter general-purpose polymerization reactor, add the corresponding amount of reaction monomer into the reactor, replace with nitrogen, raise the temperature, and carry out the esterification reaction at 230°C under normal pressure for 180 minutes. When the water output of esterification reaches 2500mL, the end point of esterification is reached. Close the rectification column, open the vacuum system, gradually open the vacuum valve, and transition from low vacuum to high vacuum within 45 minutes. The pressure in the reactor is reduced to 100Pa, and the temperature in the reactor is raised to 260°C at the same time. Polymerization reaction, the polymerization time is 120min, the reaction is stopped, and the material is discharged to prepare a low dielectric constant TPEE elastomer that meets the requirements; the prepared low dielectric constant TPEE elastomer is dried at 115 °C for 8 hours, then pulverized, and mixed with...

Embodiment 2

[0028]Add each component into a 20L polymerization reactor, the formula is shown in Table 1, replace with nitrogen, raise the temperature to 220°C, and carry out the esterification reaction under normal pressure for 210min, and the esterification water output reaches 2300mL, reaching the end point of the esterification; close the rectification column , turn on the vacuum system, gradually open the vacuum valve, transition from low vacuum to high vacuum within 45 minutes, the pressure in the reactor drops to 10Pa, and at the same time raise the temperature in the reactor to 250°C, polymerize for 150min, stop the reaction, and discharge , the prepared low dielectric constant TPEE elastomer was dried at 115°C for 8 hours, then pulverized, and mixed with phenolic resin hollow microspheres at high speed according to the ratio in Table 1. The particle size of the phenolic resin hollow microspheres was 25 μm, and the wall thickness was 5 μm. , using a twin-screw spinning machine for m...

Embodiment 3

[0031] Add each component into a 20L polymerization reactor, the formula is shown in Table 1, replace with nitrogen, raise the temperature to 210°C, and carry out the esterification reaction under normal pressure for 240 minutes, the esterification water output reaches 2100mL, reaching the end point of the esterification; close the rectification column , open the vacuum system, gradually open the vacuum valve, transition from low vacuum to high vacuum within 45 minutes, the pressure in the reactor drops to 50Pa, and at the same time raise the temperature in the reactor to 240°C, polymerize for 180min, stop the reaction, and discharge ; The prepared low dielectric constant TPEE elastomer was dried at 110°C for 8 hours, then pulverized, and mixed with phenolic resin hollow microspheres at high speed according to the ratio in Table 1. The particle size of the phenolic resin hollow microspheres was 10 μm, and the wall thickness was 2 μm. , using a twin-screw spinning machine for me...

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Abstract

The invention discloses a preparation method of a lightweight low-dielectric-constant TPEE elastomer master batch, which comprises the following steps: adding 1,4-butanediol, polyether, fluorine-containing aromatic dibasic acid and / or terephthalic acid, long-chain aliphatic dibasic acid with carbon atom number of more than or equal to 14, a titanium-series catalyst and an antioxidant into a reaction kettle, and carrying out esterification and polymerization reaction to obtain a low-dielectric-constant TPEE elastomer; and drying and crushing the low-dielectric-constant TPEE elastomer, blending the crushed low-dielectric-constant TPEE elastomer with phenolic resin hollow microspheres, and carrying out extrusion, cooling and grain-sized dicing treatment on the blend to obtain the lightweight low-dielectric-constant TPEE elastomer master batch. The invention also discloses a method for preparing an elastic film by using the TPEE elastomer master batch. Compared with a conventional TPEE elastomer, the TPEE elastomer master batch has the advantages that the dielectric constant and the dielectric loss are obviously reduced, and the elastomer film has low dielectric loss performance. Compared with a conventional elastomer film, the TPEE elastomer film provided by the invention shows good weather resistance.

Description

technical field [0001] The invention relates to a preparation method of a TPEE elastomer master batch and a film preparation method, in particular to a lightweight low-dielectric constant TPEE elastomer master batch and a film preparation method. Background technique [0002] Thermoplastic polyetherester elastomer (TPEE) is a block copolymer containing polybutylene terephthalate (PBT) polyester hard segment and polyether soft segment. The Shore hardness ranges from 35 to 72D. TPEE is also It has the excellent elasticity of rubber and the ease of processing of thermoplastics, adjustable softness and hardness, and has outstanding mechanical strength, excellent resilience and wide service temperature. field has been widely used. [0003] The dipole moment and polarizability of the ether bond in TPEE elastomer are relatively large. Compared with PBT polyester, TPEE elastomer has a higher dielectric constant and greater dielectric loss, which limits its use in some special field...

Claims

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Application Information

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IPC IPC(8): C08G63/682C08L67/02C08L61/06C08J5/18
CPCC08G63/6826C08L67/025C08J5/18C08L2205/20C08J2367/02C08J2467/02C08J2461/06C08L61/06
Inventor 张建李晶李庆男孟楷龚柳柳乔秀静史路飞
Owner CHINA PETROLEUM & CHEM CORP
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