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Application of multi-element random copolymer in improvement of phase state structure and phase state stability of polyester/styrene resin alloy

A styrene-based resin and random copolymer technology, applied in the field of special compatibilizers, can solve the problems of re-aggregation of dispersed phases, large differences in solubility parameters between polyester and styrene-based resins, and easy phase separation, etc., to achieve High efficiency, good cost performance, and good thermal stability

Active Publication Date: 2020-08-07
FINE BLEND POLYMER SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Generally speaking, the processing temperature of polyester / styrene resin alloy is relatively high, and the solubility parameters of polyester and styrene resin are quite different, which is prone to phase separation
Although the compatibility of PC / ABS is not bad, because the ester group of PC is also easy to be degraded by the attack of active groups such as hydroxyl groups under the condition of long thermal history or strong shear, it is difficult to process or recycle during processing. Re-agglomeration of the dispersed phase is easy to occur in the medium; the current solution to the compatibility problem of polyester / styrene resin is generally to add a compatibilizer
Most of the products that have been industrialized are acid anhydrides and epoxy products, but they are mostly used for chain extension and toughening, such as BASF's ADR-4370, Arkema's AX8900, DuPont's PTW, etc., but there is no related Reports on Compatibilizers in Improving Phase and Phase Stability

Method used

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  • Application of multi-element random copolymer in improvement of phase state structure and phase state stability of polyester/styrene resin alloy
  • Application of multi-element random copolymer in improvement of phase state structure and phase state stability of polyester/styrene resin alloy
  • Application of multi-element random copolymer in improvement of phase state structure and phase state stability of polyester/styrene resin alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0036] According to the composition ratio of raw materials in Table 1, a special compatibilizer for improving the phase distribution and stability of polyester / styrene resin alloys was prepared, Examples 1-4, 14 and Comparative Example 1-2 (preparation method Consistent with the examples, conventional adjustment of feeding). And these compatibilizers are used to prepare polyester / styrene resin alloys to study the improvement of the phase state and phase stability of such alloys.

[0037]

Embodiment 5～9

[0039] The PC resin is PCI250WP (the relative number average molecular weight is 22,000g / mol, and the glass transition temperature is 140°C) from Teijin Corporation of Japan; the ABS resin is P / D190 (the relative weight average molecular weight is 120,000g / mol, The weight percentage content of butadiene is 50%, the weight percentage content of acrylonitrile is 15%, and the weight percentage content of styrene is 35%.

[0040]

[0041] Put the above components into the high mixer according to the proportion and mix them for 3 minutes, discharge the material, and then use the screw extruder to extrude and granulate. The rotation speed of the twin-screw extruder is 2000rpm, and the aspect ratio of the twin-screw extruder is 36.

[0042] According to the particles prepared in Examples 5 to 8, sheets are obtained by conventional injection molding, which are samples 1 to 4 respectively. After the samples are cooled and brittle with liquid nitrogen, the rubber phase is etched, and...

Embodiment 5

[0045] The phase state structure of embodiment 5,6 has difference, combines image 3 The scanning electron microscope, the injection molded parts of embodiment 5 and embodiment 6 were sampled at the near gate position and the far gate position, and the phase structure was analyzed by transmission electron microscope after slicing to observe its phase stability. In order to illustrate the influence of the compatibilizer of the present invention on the stability of the alloy phase distribution, the conventional injection molding of a large mold is used to prepare an injection molded part with a length of 30 cm and a width of the standard width of the notched impact spline, and the spline closest to the gate and the nearest spline are respectively taken. Test the spline far away from the gate; it can be seen that in the injection mold, due to the existence of the shear-tensile force field, the phase structure of Example 6 is unstable, and the phase structure at the far gate is rel...

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Abstract

The invention discloses an application of a multi-element random copolymer in improvement of a phase state structure and phase state stability of a polyester / styrene resin alloy or an application of the multi-element random copolymer in preparation of the polyester / styrene resin alloy. The multi-element random copolymer is formed by copolymerizing an aromatic vinyl monomer, an acrylonitrile monomer and glycidyl methacrylate. The special compatilizer for the polyester / styrene resin alloy is blended with other raw materials, and the mixture is extruded and granulated; the polyester / styrene resinalloy with excellent phase state structure and phase state stability can be simply and effectively prepared with convenience in use and low cost; the alloy maintains excellent mechanical properties,and also has special effects brought by phase state stability, such as repeatable processing, excellent multi-axis impact, low notch sensitivity and the like, so that the application field of the alloy can be broadened.

Description

technical field [0001] The invention relates to a special compatibilizer for improving phase distribution and stability of polyester / styrene resin alloy and application thereof. Background technique [0002] Polymer alloy materials have attracted more and more attention from researchers because of the advantages of both polymers. For example, PC / ABS alloys have improved flow compared with PC due to the comprehensive characteristics of both PC and ABS. It improves the processing performance, reduces the sensitivity of the product to stress, and has more excellent thermal stability than ABS. Therefore, it can be used in many fields such as household appliances, office equipment, communication equipment, photographic equipment, medical equipment, construction and lighting appliances, aerospace, electronic computers, and optical fibers. Especially in high-strength, high-heat-resistant parts such as automotive interiors, exteriors, and lights, it has been widely used. [0003] ...

Claims

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Application Information

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IPC IPC(8): C08F212/10C08F220/44C08F220/32C08F220/14C08L69/00C08L55/02C08L25/14
CPCC08F212/10C08L69/00C08L2205/08C08L2201/08C08F220/44C08F220/325C08F220/14C08L55/02C08L25/14Y02W30/62C08L67/00C08L25/12
Inventor 段浩朱从山司胜仁
Owner FINE BLEND POLYMER SHANGHAI CO LTD
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