Polycarbonate composite material and preparation method thereof

A technology of polycarbonate and composite materials, applied in the field of polycarbonate composite materials and its preparation, can solve problems such as silver cracks, easy failure of materials, uneven composition distribution, etc., to prevent crack initiation, efficient and convenient preparation process, Remarkable effect of toughening effect

Active Publication Date: 2020-06-19
CHANGZHOU BAIJIA NIANDAI FILM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a polycarbonate composite material and its preparation method to solve the problem that the existing polycarbonate composite material is prone to cause internal stress concentration of the material due to uneven composition distribution, resulting in a large amount of silver cracks and developing towards cracks. Problems that ultimately lead to the material being prone to failure

Method used

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  • Polycarbonate composite material and preparation method thereof
  • Polycarbonate composite material and preparation method thereof
  • Polycarbonate composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The polycarbonate composite material of the present embodiment includes: by weight, 100 parts of bisphenol A type polycarbonate, 20 parts of talcum powder, 20 parts of MBS, 5 parts of silane coupling agent, 2 parts of fatty acid soap, phthalocyanines 1 part of pigment masterbatch, wherein the particle size of talcum powder is 1 micron.

[0039] The preparation method of the polycarbonate composite material of the present embodiment, comprises the following steps:

[0040] (1) Drying the above-mentioned components at 50° C. for 5 hours to obtain a component with a moisture content lower than 0.02% after drying;

[0041] (2) Stir the dried inorganic particles, compatibilizer and lubricant at 100°C in an anchor stirrer at 100r / min for 2min, then at 300r / min for 3min and mix well;

[0042] (3) Stir the mixture of step (2) and the dried organic toughening agent at a temperature of 100° C. in a hinged stirrer at 200 r / min for 5 min and mix evenly;

[0043] (4) Stir the drie...

Embodiment 2

[0046] The polycarbonate composite material of this embodiment includes: by weight, 80 parts of bisphenol A type polycarbonate, 30 parts of titanium dioxide, 20 parts of MBS, 20 parts of ABS, 15 parts of silane coupling agent, 6 parts of silicone , 6 parts of paraffin, 5 parts of phthalocyanine pigment masterbatch, wherein the particle size of titanium dioxide is 0.1 micron.

[0047] The preparation method of the polycarbonate composite material of the present embodiment, comprises the following steps:

[0048] (1) drying the components of the above proportioning ratio at 80° C. for 8 hours to obtain a component with a moisture content lower than 0.02% after drying;

[0049] (2) Stir the dried inorganic particles, compatibilizer and lubricant in an anchor stirrer at 110°C at 150r / min for 2min, then at 350r / min for 3min and mix evenly;

[0050] (3) Stir the mixture of step (2) and the dried organic toughening agent at a temperature of 110°C at 200r / min for 5min in a hinged sti...

Embodiment 3

[0054] The polycarbonate composite material of this embodiment includes: by weight, 105 parts of bisphenol A polycarbonate, 15 parts of aliphatic polycarbonate, 39 parts of mica, 1 part of carbon nanotube, 10 parts of polyurethane elastomer, 50 parts of silane coupling agent, 10 parts of silicone, 10 parts of paraffin and 3 parts of phthalocyanine pigment masterbatch, among which, the mica is 0.1 micron, the inner diameter of carbon nanotube is 1-2 nanometers, the outer diameter is 3-4 nanometers, and the length is 50 Microns.

[0055] The preparation method of the polycarbonate composite material of the present embodiment, comprises the following steps:

[0056] (1) drying the components of the above proportioning ratio at 120° C. for 12 hours to obtain a component with a moisture content lower than 0.02% after drying;

[0057] (2) Stir the dried inorganic particles, compatibilizer and lubricant in an anchor stirrer at 120°C at 200r / min for 2min, then at 400r / min for 3min an...

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Abstract

The invention discloses a polycarbonate composite material and a preparation method thereof, and belongs to the technical field of electronic materials. The polycarbonate composite material comprisesthe following components in parts by weight: 80-120 parts of polycarbonate, 10-50 parts of inorganic particles, 20-60 parts of an organic toughening agent, 5-30 parts of a compatilizer, 2-10 parts ofa lubricant and 1-10 parts of color master batch. According to the invention, permeation toughening and rigid particle toughening mechanisms are utilized, a component system with proper compatibilityis selected, segmented polymer phase state processing control is adopted, and finally a novel microcapsule type core-shell structure is formed with a polycarbonate matrix; when the novel microcapsuletype core-shell structure is stressed, energy can be absorbed through molecular chain movement and intramolecular friction of characteristic components, so that the toughness and the fatigue resistance of the material are improved; and when the novel microcapsule type core-shell structure is subjected to cyclic stress, a microphase liquid region can be generated in a phase micro-region through theinternal friction generated by the movement of the molecular chain, wherein the size of the liquid pool is smaller than a critical size, and the toughening effect is extremely remarkable, so that crack initiation can be effectively prevented, and accumulated damage to the microcosmic region in the material is reduced so as to substantially improve the toughness and the fatigue resistance of the polycarbonate.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to a polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate (referred to as PC) is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Among them, due to the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonates, their application in engineering plastics is limited. At present, polycarbonates used as engineering plastics are mainly bisphenol A type. PC is yellowish, rigid and tough, with good dimensional stability, creep resistance, heat resistance and electrical insulation. The molecule has a symmetrical structure, simple and regular, the group volume is large, and crystallization is difficult. Under general molding conditions, PC is an amor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/04C08L55/02C08L75/04C08K13/02C08K3/34C08K3/22C08K3/04B29B7/28B29B7/82B29B13/06B29C48/40B29C48/92
CPCC08L69/00B29B13/06B29B7/28B29B7/823B29C48/40B29C48/92B29C2948/9258B29C2948/92704C08K2003/2241C08K2201/003C08K2201/011C08K2201/004C08L2205/035C08L2205/025C08L2205/03C08L2203/20C08L2207/53C08L51/04C08K13/02C08K3/34C08L55/02C08K3/22C08L75/04C08K3/041
Inventor 熊唯诚赵天宝茹红光杨志陈宝书茹正伟
Owner CHANGZHOU BAIJIA NIANDAI FILM TECH CO LTD
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