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Method for preparing shockproof composition of styrene resin in high tensile strength and low lustre

A styrene resin with low strength technology, which is applied in the field of preparation of impact-resistant, high-tensile-strength, low-gloss styrene resin composition, which can solve the need for frequent adjustment of gloss, inconvenient gloss reduction, failure to take into account impact strength, tensile strength Strength and other issues

Inactive Publication Date: 2006-04-19
太仓中化环保化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its defect is that although the gloss of the prepared ABS composition has been effectively reduced, it has not taken care of the balance of the comprehensive properties of impact strength and tensile strength. convenient

Method used

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  • Method for preparing shockproof composition of styrene resin in high tensile strength and low lustre
  • Method for preparing shockproof composition of styrene resin in high tensile strength and low lustre
  • Method for preparing shockproof composition of styrene resin in high tensile strength and low lustre

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Experimental program
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Effect test

preparation example

[0084] 2.1 Preparation process and physical properties of polymers A, C, and D:

[0085] ① First prepare the rubber graft copolymer (A.) according to the following formula:

[0086] Composition Weight (g, grams)

[0087] Polybutadiene (particle size ≥ 300nm, gel 72.5%) 700

[0088] Styrene 210

[0089] Acrylonitrile 90

[0090] Methyl methacrylate 0~30

[0091] Sodium dodecylbenzenesulfonate 4

[0092] tert-dodecylmercaptan 1.5

[0093] Glucose 3

[0094] Sodium pyrophosphate 3

[0095] Ferrous sulfate 0.6

[0096] Desalinated water 1400

[0097] Dicumyl Hydroperoxide 3

[0098] The preparation process of polymer A:

[0099] Add the chemical substances in the amount of the above formula into a 3.5L polymerization reactor in sequence, and pass through a jacketed water bath within 1.5 hours to slowly raise the temperature of the polymerization liquid to 70°C, react at constant temperature and normal pressure for 5.0 hours, and analyze the conversion rate > 96.0%. The...

Embodiment -1

[0123] [Example-1] 460 grams of A, 1540 grams of B (suspension method SAN, the styrene-acrylonitrile copolymer produced by the suspension method), 8 grams of magnesium stearate, 8 grams of EBS (ethylene bisstearyl amine), 60 grams of C2 blended and then extruded and granulated. The properties of the composition are: impact strength 371.2J / m (Joule / meter, the same below), tensile strength 37.5Mpa (MPa, the same below), MI (melt Body index) 1.7g / 10min (g / 10min), surface gloss (60°) 83.

[0124] When C2 is not added, the surface gloss (600 degrees) is 96, and other properties are 336, 39, and 1.9 in turn.

Embodiment -2

[0125] [Example-2] 430 grams of A, 1570 grams of B (same as Example-1), 8 grams of magnesium stearate, 8 grams of EBS, and 100 grams of C2 are blended and then extruded and granulated. The properties of the composition are: impact Strength 355.1J / m, tensile strength 37.5Mpa, MI1.63g / 10min, surface gloss (60°) 76.

[0126] When C2 is not added, the surface gloss (600 degrees) is 96.5, and other properties are 315, 40, and 2.1 in turn.

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Abstract

A styrene resin composition with high impact resistance and tension strength and low lustre is prepared through respectively preparing graft copolymer, copolymer, rubber elastomer, and the copolymer of polybutanediene and rubber elastomer, proportional mixing, adding additive and assistant, and pugging.

Description

[0001] method (1) Technical field: [0002] The invention relates to a method for preparing a rubber-modified styrene resin composition, more precisely, the invention refers to a method for preparing a styrene resin composition with high impact resistance, high tensile strength and low gloss. The composition is added with PBD (polybutadiene), SBR (styrene-butadiene) or NBR (acrylonitrile-butadiene) polymer powder as a gloss modifier during the blending stage, which can be conveniently prepared with excellent A resin composition characterized by impact strength, tensile strength, and easy adjustment of the surface gloss of molded products. [0003] Herein, all parts (%) are parts by weight (%) unless otherwise specified. (2) Background technology [0004] Hitherto, the styrenic resin composition is an impact-resistant resin composition prepared by dispersing a rubber-like graft copolymer in a styrenic copolymer. When used in the casing of home appliances, leather cases and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/08
Inventor 田冶苏亚贵梁成锋舒纪恩朱结东
Owner 太仓中化环保化工有限公司
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