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High heat-resistant abs resin composition suitable for blow molding and preparation method thereof

An ABS resin and blow molding technology, which is applied in the polymer field to achieve high heat resistance, reduce melt sag, and meet heat resistance requirements.

Active Publication Date: 2017-09-19
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the present invention prepares a high heat-resistant ABS resin suitable for blow molding by compounding and using a specific proportion of heat-resistant agent and high-grade rubber powder, so as to solve the problems in the prior art when preparing heat-resistant grade ABS resin for blow molding. Deficiencies caused by cost, molding, surface quality, heat resistance / impact performance, and product post-processing

Method used

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  • High heat-resistant abs resin composition suitable for blow molding and preparation method thereof
  • High heat-resistant abs resin composition suitable for blow molding and preparation method thereof
  • High heat-resistant abs resin composition suitable for blow molding and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1～5

[0048] (1) in all embodiments and comparative examples, the raw material that adopts is:

[0049] Graft copolymer A-1a is a polybutadiene rubber grafted styrene-acrylonitrile-α-methylstyrene copolymer with a gel content of 85% and a rubber particle size of about 150nm;

[0050] The preparation method of the graft copolymer A-1a comprises the steps of: in the presence of 45 parts by weight of polybutadiene rubber, a graft copolymer prepared by polymerization of a monomer mixture of 55 parts by weight;

[0051] Wherein, the monomer mixture contains the following components and parts by weight, based on 100 parts by weight: 60 parts by weight of α-methylstyrene, 16 parts by weight of styrene, and 24 parts by weight of acrylonitrile components;

[0052] The graft copolymer A-1b is polybutadiene rubber grafted styrene-acrylonitrile-α-methylstyrene copolymer, the gel content is 90%, and the rubber particle size is about 200nm;

[0053] The preparation method of the graft copolymer ...

Embodiment 6～9

[0108] (1) In Examples 6-9, the raw materials used are: 100 parts by weight of styrene resin composition A and 20 parts by weight of heat-resistant agent B;

[0109] The components and parts by weight of the styrene resin composition A are as follows, based on 100 parts by weight:

[0110] Graft copolymer A-1c 30 parts by weight;

[0111] 10 parts by weight of graft copolymer A-2b;

[0112] Copolymer A-3a 60 parts by weight;

[0113] Wherein, the graft copolymer A-1c is polybutadiene rubber grafted styrene-acrylonitrile-α-methylstyrene copolymer, and the proportioning (parts by weight) of each monomer is as shown in Table 2;

[0114] Graft copolymer A-2b is polybutadiene rubber grafted styrene-acrylonitrile copolymer, and the proportioning (parts by weight) of each monomer is as shown in Table 2;

[0115] Copolymer A-3a is a styrene-acrylonitrile copolymer, and the proportioning (parts by weight) of each monomer is as shown in Table 2;

[0116] The heat-resistant agent is ...

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Abstract

The present invention relates to a heat-resistant ABS resin composition formed by blow molding and a preparation method therefor. The composition comprises styrene resin composition A in 100 parts by weight and a heat-resistant agent B in 20 to 40 parts by weight, the heat-resistant agent B being N-phenylmaleimide-α-methylstyrene-acrylonitrile-styrene quadripolymer. The preparation method for the ABS resin composition comprises the following steps: weighing the components in parts by weight; thoroughly mixing the components in a high-speed mixer, to obtain a mixture; the mixture entering a double-screw extruder from a main feed port, and undergoing melt extrusion, cooling, drying, and dicing, to obtain the ABS resin composition. A product prepared by blow molding in the present invention has desirable surface quality and heat-resistant performance, the vicat softening temperature reaches above 110°C, and therefore, the product can meet the heat-resistance requirement of the paint-spraying post-processing technique for auto parts and can be used in a harsh environment; moreover, the product prepared by blow molding is highly impact-resistant.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and in particular relates to a high heat-resistant ABS resin composition suitable for blow molding and a preparation method thereof. Background technique [0002] ABS resin has excellent comprehensive properties and can be applied to various molding methods such as injection molding, extrusion, vacuum, blow molding and rolling. In the blow molding process, when the polymer passes through the narrow die, due to the high shear force, the extruded parison will sag under its own weight, and the excessive sagging will cause the wall of the part The thickness is uneven, and in severe cases, it cannot even be molded. Therefore, when selecting a polymer suitable for blow molding, its shear viscoelastic properties must be understood. In addition to high melt strength, the ABS resin suitable for blow molding requires that the sensitivity of its melt viscosity to the shear rate is small, that is, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/12C08L55/02C08L51/04C08L25/16C08F279/04C08F212/12C08F222/40C08F212/10C08F220/48C08K3/34C08J3/22B29C47/92B29C49/00B29C48/92
CPCC08L55/02B29C48/04C08L25/12C08L25/16C08L51/04
Inventor 单桂芳辛敏琦罗明华周霆邱卫美
Owner SHANGHAI KUMHO SUNNY PLASTICS
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