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Polycarbonate composition and preparation method thereof

A polycarbonate and composition technology, applied in the field of engineering plastics, can solve the problems of polycarbonate wear resistance and poor solvent resistance, damage to the high toughness and transparency of polycarbonate substrates, etc., to improve toughness and stability, Enhanced penetration and excellent impact performance

Active Publication Date: 2019-05-31
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the poor wear resistance and solvent resistance of polycarbonate, the research focus is on alloy modification to improve the wear resistance and poor solvent resistance of PC, but the general alloy technology will damage the high toughness and transparency of the polycarbonate matrix. , which limits its use in transparent fields and fields with strict toughness requirements

Method used

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  • Polycarbonate composition and preparation method thereof
  • Polycarbonate composition and preparation method thereof
  • Polycarbonate composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The preparation method of the polycarbonate composition of embodiment and comparative example is identical, and preparation method is:

[0028] (1) After weighing the first polycarbonate, the second polycarbonate, the acrylate polymer, the interface modifier and the auxiliary agent according to a specific ratio, they are blended in a high-speed mixer, and the preset mixing time is 3 to 5 minutes to obtain a uniform mixture;

[0029] (2) Put the uniformly mixed mixture into the feeding hopper with a preset feeding amount, and then put it into a twin-screw extruder for extrusion and granulation. The extrusion temperature is 190°C-230°C, and the vacuum degree is greater than 1MPa; The melt strip is cooled through a cooling tank, drawn, granulated, and mixed again to obtain a polycarbonate composition of columnar granules.

Embodiment 1～9

[0031] The components of the polycarbonate compositions of Examples 1-9 are shown in Table 1.

[0032] Table 1

[0033]

[0034]

Embodiment 10～17

[0042] Embodiment 10~17 and comparative example 7~9

[0043] The components of the polycarbonate compositions of Examples 10-17 and Comparative Examples 7-9 are shown in Table 3 and Table 4.

[0044] table 3

[0045]

[0046]

[0047] Table 4

[0048]

[0049]

[0050] "--" means not to add.

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Abstract

The invention belongs to the technical field of engineering plastics and discloses a polycarbonate composition and a preparation method thereof. The polycarbonate composition is prepared from, by weight, 10-94 parts of first polycarbonate, 1-50 parts of second polycarbonate, 5-30 parts of a acrylate polymer and 0.01-1 part of an interface regulator, wherein the first polycarbonate refers to straight-chain polycarbonate, and the second polycarbonate refers to branch-chain polycarbonate; a difference value of refractive indexes of the acrylate polymer and the first polycarbonate as well as the first polycarbonate is not greater than 0.08; the interface regulator refers to a GMA polymer. By combination of the straight-chain polycarbonate and the branch-chain polycarbonate, optimal selection of refractive index alloy and adding of the interface regulator, a uniform fine alloy phase state structure is formed, and the composition integrates high surface hardness, excellent impact performanceand great transparency, is comparable to PMMA in surface performance and achieves rigidity-flexibility balance of PC.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a polycarbonate composition 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, the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their application in engineering plastics. At present, only aromatic polycarbonate has been produced industrially. Due to the special structure of polycarbonate, it has become the fastest-growing general-purpose engineering plastic among the five major engineering plastics. Polycarbonate is a synthetic material that began to be developed in the late 1950s. Polycarbonate resin has outstanding impact resistance, creep resistance, and dimensio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L33/12C08L51/00C08L33/14
CPCC08L33/12C08L33/14C08L51/00C08L69/00
Inventor 岑茵艾军伟董相茂王培涛吴俊赵体鹏
Owner KINGFA SCI & TECH CO LTD
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