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A kind of PBT material with good epoxy resin adhesion and preparation method thereof

An epoxy resin, epoxy resin curing technology, applied in the field of PBT materials and their preparation, can solve the problems of gap, aging temperature is only 90 ℃, time is only 500 hours, etc., to achieve convenient operation, excellent anti-aging performance, excellent interface The effect of bonding

Active Publication Date: 2016-06-15
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN201310130562.3 discloses an anti-aging plastic automobile ignition coil casing and its preparation method, which uses antioxidant 1076, antioxidant 618 and antioxidant DLTDP to improve the resistance of the automobile ignition coil casing materials. Aging performance, but the aging temperature of the material is only 90°C and the time is only 500 hours, which is significantly different from the common aging resistance index around the engine at 120°C and 700 hours.
At present, there is no literature report on improving the adhesion between polybutylene terephthalate (PBT) and epoxy resin potting compound for ignition coil shell or ignition coil skeleton

Method used

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  • A kind of PBT material with good epoxy resin adhesion and preparation method thereof
  • A kind of PBT material with good epoxy resin adhesion and preparation method thereof
  • A kind of PBT material with good epoxy resin adhesion and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) prepare materials according to the components and parts by weight of Table 1;

[0030] (2) Put PBT, compatibilizer, epoxy resin curing agent, benzoate, antioxidant, lubricant into the high-speed mixer, and mix for 3 minutes;

[0031] (3) Extrude the above-mentioned mixed material through a twin-screw extruder and granulate it. Glass fiber is added from the middle and downstream of the twin-screw extruder. The speed of the extruder is 400 rpm and the temperature is 235°C.

[0032] The PBT used is PBTBM434 produced by Yizheng Chemical Fiber, and its characteristic viscosity is 1.2dl / g; the compatibilizer used is AX8900 produced by Arkema, France; the epoxy resin curing agent used is an aromatic amine curing agent, manufactured by Shanghai The m-phenylenediamine (CAS: 108-45-2) produced by Anuofang Amine Chemicals Co., Ltd.; the benzoate used is sodium benzoate (CAS: 532-32-1) produced by Tianjin Dongda Chemical Co., Ltd.; the used The antioxidant is antioxidant 24-44...

Embodiment 2

[0034] (1) prepare materials according to the components and parts by weight of Table 1;

[0035] (2) Put PBT, compatibilizer, epoxy resin curing agent, benzoate, antioxidant, lubricant into the high-speed mixer, and mix for 5 minutes;

[0036] (3) Extrude and pelletize the above-mentioned mixed material through a twin-screw extruder, and add glass fiber from the middle and downstream of the twin-screw extruder, the extruder speed is 500 rpm, and the temperature is 245°C.

[0037] The PBT used is PBTBM434 produced by Yizheng Chemical Fiber, with an intrinsic viscosity of 1.2dl / g; the compatibilizer used is AX8900 produced by Arkema, France; the epoxy resin curing agent used is a polyamide curing agent manufactured by Jiangqiao Chemical The oligoamide 2140 produced by the factory has a viscosity of 250-400mPa.s / 75°C; the benzoate used is a mixture of potassium benzoate and sodium benzoate in a weight ratio of 2:1, and the sodium benzoate is produced by Tianjin Dongda Chemical I...

Embodiment 3

[0039] (1) prepare materials according to the components and parts by weight of Table 1;

[0040] (2) Put PBT, compatibilizer, epoxy resin curing agent, benzoate, antioxidant, lubricant into the high-speed mixer, and mix for 8 minutes;

[0041](3) Extrude and pelletize the above-mentioned mixed materials through a twin-screw extruder, and add glass fibers from the middle and downstream of the twin-screw extruder, the extruder speed is 180 rpm, and the temperature is 225°C.

[0042] The PBT used is PBTBM434 produced by Yizheng Chemical Fiber, with an intrinsic viscosity of 1.2dl / g; the compatibilizer used is AX8900 produced by Arkema, France; the epoxy resin curing agent used is polyamide curing agent and aromatic amine Curing agent is the mixture of 2:1.9 by weight, and described polyamide curing agent is produced by Jiangqiao Chemical Plant oligoamide 2140, and its viscosity is 250-400mPa.s / 75 ℃, and the aromatic amine curing agent used is made of m-phenylenediamine (CAS: 10...

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Abstract

The invention relates to a PBT material with an excellent epoxy resin bonding property and a preparation method of the PBT material. The PBT material is prepared from the following raw materials in parts by weight: 40-70 parts of PBT, 20-40 parts of glass fibers, 2-10 parts of compatilizer, 1-8 parts of epoxy resin curing agent, 0.1-2 parts of benzoate, 0.2-1.5 parts of antioxidant, and 0.2-1.5 parts of lubricant. The PBT material has more reactive functional groups for having a chemical effect with the epoxy resin in the epoxy resin curing process, so that good interface bonding is formed between the material and the epoxy resin. The PBT material prepared by use of the method has an excellent anti-aging property, and meets the anti-aging performance requirements of engine peripheral materials. The PBT material is simple in preparation process, convenient to operate, and more suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PBT material with good epoxy resin adhesion and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (English name Polybutylene Terephthalate, referred to as PBT) is milky white translucent to opaque, crystalline thermoplastic polyester. It has excellent electrical properties, high heat resistance, toughness, fatigue resistance, self-lubrication, low coefficient of friction, weather resistance, low water absorption, and maintains various physical properties (including electrical properties) in a humid environment. Good, so it is widely used as engineering plastics in automobiles, electronic and electrical components. [0003] The engine ignition coil is the main component of the engine ignition system. Its function is to increase the low voltage of the car battery to a high voltage of 20kv to 40kv that can cause spark plug discharge....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L63/00C08L33/04C08K13/04C08K7/14C08K5/098C08K5/526C08K5/134C08K5/1535
Inventor 王尹杰杨涛李莉朱明源段家真
Owner 上海日之升科技有限公司
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