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PBT material with excellent epoxy resin bonding property and preparation method of PBT material

An epoxy resin, epoxy resin curing technology, applied in the field of PBT materials and their preparation, can solve the problems of aging temperature only 90 ℃, time only 500 hours, gap and other problems, to achieve excellent anti-aging performance, convenient operation, suitable for large The effect of mass production

Active Publication Date: 2015-05-13
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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  • PBT material with excellent epoxy resin bonding property and preparation method of PBT material
  • PBT material with excellent epoxy resin bonding property and preparation method of PBT material
  • PBT material with excellent epoxy resin bonding property and preparation method of PBT material

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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] Used PBT is the PBT BM434 that Yizheng Chemical Fiber produces, and its characteristic viscosity is 1.2dl / g; Used compatibilizer is the AX8900 that French Arkema Company produces; Used epoxy resin curing agent is aromatic amine curing agent, by m-phenylenediamine (CAS: 108-45-2) produced by Shanghai Anuofang Amine Chemical Co., Ltd.; the benzoate used is sodium benzoate (CAS: 532-32-1) produced by Tianjin Dongda Chemical Industry Co., Ltd.; The antioxidant used is antioxidant 24-44 (tetra(...

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 PBT BM434 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 Jiang Qiao The oligoamide 2140 produced by the chemical 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 Chemica...

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 PBT BM434 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 The mixture of polyamide curing agent by weight ratio 2:1.9, the polyamide curing agent is oligoamide 2140 produced by Jiangqiao Chemical Factory, its viscosity is 250-400mPa.s / 75°C, the aromatic amine curing agent used The m-phenylenediamine (CAS: 108-45-2) p...

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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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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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