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Preparation method of acrylonitrile-butadiene-styrene/nylon blend alloy

A technology of butadiene and acrylonitrile, which is applied in the field of preparation of acrylonitrile-butadiene-styrene/nylon blend alloys to achieve good compatibility, high impact strength, and good post-processing stability

Active Publication Date: 2016-06-22
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This special ABS uses large particle size polydiene as the graft backbone latex to carry out graft copolymerization of quaternary emulsion. After grafting, the ABS graft latex with characteristic groups is coagulated, dehydrated and dried. The branch powder is directly blended with PA to prepare high-performance ABS / PA alloy. The above characteristics have not been reported in domestic and foreign literature.

Method used

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  • Preparation method of acrylonitrile-butadiene-styrene/nylon blend alloy
  • Preparation method of acrylonitrile-butadiene-styrene/nylon blend alloy

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preparation example Construction

[0052] The preparation temperature of acrylonitrile-butadiene-styrene graft latex:

[0053] In the present invention, the preparation temperature of acrylonitrile-butadiene-styrene grafted latex is not particularly limited, usually 50-80°C, if the temperature is lower than 50°C, the reaction temperature cannot reach the temperature of acrylonitrile-butadiene-styrene graft latex. Diene-styrene grafted latex preparation requirements, can not complete the reaction, the polymerization rate is low, can not complete the reaction within the required reaction time, and higher than 80 ° C, the polymerization rate is too fast, difficult to control, There were no other beneficial effects.

[0054] The preparation reaction time of acrylonitrile-butadiene-styrene graft latex:

[0055] In the present invention, the reaction time in the preparation process of acrylonitrile-butadiene-styrene grafted latex is not particularly limited, and usually pre-mixed with emulsifier, initiator remain...

Embodiment 1

[0105] (a) Preparation of acrylonitrile-butadiene-styrene graft latex

[0106] (a1) 45 parts by weight of 160 parts by weight of deionized water, 45 parts by weight of polydiene latex with large particle diameter of 300nm, 10 parts by weight of activator, 0.15 parts by weight of initiator potassium persulfate, the add-on of this part initiator is the total amount of initiator 10% of the amount, put into the reaction kettle, stir, and raise the temperature to 50°C;

[0107] In this preparation step, the above-mentioned large particle size polydiene latex is polybutadiene latex;

[0108] The activator consists of 80 parts by weight of desalinated water, 3.0 parts by weight of glucose, 4.5 parts by weight of sodium pyrophosphate, FeSO 4 ·7H 2 0.01 parts by weight are composed;

[0109] (a2) 2.5 parts by weight of emulsifier, 1.35 parts by weight of initiator potassium persulfate, 1.25 parts by weight of molecular weight modifier tertiary dodecyl mercaptan, 35.5 parts by weight...

Embodiment 2

[0122] Embodiment 2 is basically the same as Embodiment 1, the difference is:

[0123] (a1) in deionized water 200 weight parts, 280nm large particle diameter polydiene latex 60 weight parts, used large particle diameter polydiene latex is styrene-butadiene latex;

[0124] (a2) 4.5 parts by weight of emulsifier, 2.25 parts by weight of initiator cumene peroxide, 0.65 parts by weight of molecular weight modifier tertiary dodecyl mercaptan, 31.5 parts by weight of graft monomer styrene, acrylonitrile A mixture of 15.5 parts by weight, 1 part by weight of alkyl acrylate, and 5 parts by weight of amide compounds was added to the reaction kettle of step (a1), and the reaction time was 5.5 hours. Then, 0.01 parts by weight of a reducing agent was added and reacted for 1.5 hours to obtain Special ABS graft latex;

[0125] In this preparation step, the emulsifier is a mixture of potassium oleate and potassium rosinate, and the mass dosage ratio is 2.1:1.75;

[0126] The amide compou...

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Abstract

A preparation method of acrylonitrile-butadiene-styrene / nylon blend alloy comprises the following steps: adding deionized water, polydiolefin latex with large particle size, an activator and a part of an initiator into a reaction vessel, stirring, and heating to 50-80 DEG C; adding a premixed mixture of an emulsifier, residual initiator, a molecular weight modifier, a grafted monomer, alkyl acrylate and an amide compound into the reaction vessel, reacting for 4-7 h, adding a reducing agent to react for 1-2h so as to prepare special ABS graft latex; condensing the prepared graft latex and dewatering and drying to prepare acrylonitrile-butadiene-styrene grafted powder; and blending the prepared grafted powder, nylon, a lubricant and an antioxidant and mixing and granulating the mixture through a double screw extruder so as to prepare the acrylonitrile-butadiene-styrene / nylon blend alloy.

Description

technical field [0001] The invention relates to a preparation method of an acrylonitrile-butadiene-styrene (ABS) / nylon (PA) blend alloy. Background technique [0002] At present, the main method of preparing ABS / PA alloy is the blending method: ABS resin and PA are melt blended in a twin-screw extruder in the presence of solubilizers or modifiers, antioxidants, and lubricants to prepare ABS. / PA blend alloys, but the type and amount of solubilizers or modifiers added directly affect the properties of the final alloy. [0003] Foreign research mainly focuses on ABS / PA alloy flame retardancy, ABS / PA solubilizer, ABS / PA alloy blending process and graft polymerization synthesis technology of compatibilizer, and the influence of organic fillers on the morphology and mechanical properties of ABS / PA alloy. Influence, etc., the main domestic researches are the factors affecting the performance of ABS / PA alloy, the application of solubilizer in ABS / PA alloy, the preparation technolo...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L51/00C08K5/00C08K5/20C08K5/098C08K5/134C08K5/526C08F279/00C08F212/08C08F220/44C08F220/14C08F220/18C08F220/56C08F220/58C08F4/40
Inventor 黄立本张红梅王彬娄玉良孙文盛杨红华郑君双
Owner PETROCHINA CO LTD