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ASA (acrylonitrile styrene acrylate) graft copolymerization resin rubber powder and preparation method thereof

A technology of graft copolymerization resin and rubber powder, which is applied in the field of polymer material synthesis, can solve the problems of increasing the dosage of additives and deionized water, reducing the weather resistance of finished ASA, and being unfavorable for blending and modification, and eliminating the need for latex. The effect of particle size enlargement, synthesis route shortening, and good impact performance

Active Publication Date: 2014-02-12
HANGZHOU HUACHUANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this technical solution are: 1. In order to prepare acrylate latex with large particle size, the agglomeration process is used to enlarge the particle size of the synthesized latex, so as to improve the stamping resistance of ASA resin and virtually prolong the reaction cycle. The reaction cost is greatly increased; ② During emulsion graft copolymerization, the resin phase is grafted on the rubber phase to form a core (soft) shell (hard) structure; after the grafting reaction, the latex must undergo coagulation, demulsification, washing, drying, etc. In order to obtain grafted materials that can be used as resin modifiers or directly, the process flow is cumbersome, and the amount of additives and deionized water is greatly increased, which increases the cost of raw materials and reduces production efficiency; ③ using oil-soluble initiators, such as over The reaction of benzoyl oxide (BPO), etc. is not conducive to blending and modification, and reduces the weather resistance of the finished ASA

Method used

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  • ASA (acrylonitrile styrene acrylate) graft copolymerization resin rubber powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Raw material formula: (by weight)

[0035] 5 parts of butyl acrylate, 70 parts of styrene, 25 parts of acrylonitrile, 0.08 parts of initiator (cumene hydroperoxide, sodium persulfate), 0.05 part of emulsifier (sodium dodecylbenzenesulfonate), cross-linked 0.025 part of agent (butylene diacrylate), 0.025 part of functional monomer (methacrylic acid), 0.02 part of chain transfer agent (dodecanethiol), 0.25 part of dispersant (hydroxypropyl cellulose, magnesium sulfate), Activator (sodium bisulfite) 0.01 parts, deionized water H 2 O150 copies.

[0036] Preparation process: (such as figure 1 shown)

[0037] First, the deionized water H 2 O is added to the reactor with stirring, start the reactor while stirring, add emulsifier until dissolved, then add initiator, continue stirring, add butyl acrylate, crosslinking agent, functional monomer (including butyl acrylate and cross-linking agent, accounting for 95-99% of all butyl acrylate and cross-linking agent components), ...

Embodiment 2

[0044] Raw material formula: (by weight)

[0045] 30 parts of butyl acrylate, 50 parts of styrene, 20 parts of acrylonitrile, 0.35 parts of initiator (azobisisobutyronitrile, potassium persulfate, sodium persulfate), emulsifier (sodium lauryl sulfate, dodecane Sodium sulfonate) 0.5 part, crosslinking agent (butylene diacrylate) 0.15 part, functional monomer (propyl methacrylate, ethylene glycol acrylate) 0.15 part, dispersant (methyl cellulose, poly Vinyl alcohol, magnesium carbonate) 0.5 part, activator (sodium bisulfite) 0.05 part, chain transfer agent (dodecanethiol) 0.002 part, deionized water H 2 O500 copies.

[0046] Preparation process: the same as the preparation method described in Example 1 to obtain fine granular ASA resin powder with a particle size of 20-120 mesh.

[0047] Material properties:

[0048] The ASA resin obtained by the above preparation method has good toughness, good processability, high elongation at break, good ductility, and good weather resist...

Embodiment 3

[0050] Raw material formula: (by weight)

[0051] 20 parts of butyl acrylate, 60 parts of styrene, 20 parts of acrylonitrile, 0.25 parts of initiator (tert-butyl peroxybenzoate, hydrogen peroxide), 0.3 parts of emulsifier (sodium dodecylsulfonate), crosslinking agent ( Butylenediacrylate diacrylate) 0.10 part, functional monomer (propyl methacrylate) 0.12 part, chain transfer agent (dodecyl mercaptan) 0.01 part, dispersant (hydroxyethyl cellulose, diatomaceous earth) 0.3 part , 0.03 parts of activator (sodium sulfoxylate), 350 parts of deionized water H2O.

[0052] Preparation process: the same as the preparation method described in Example 1 to obtain fine granular ASA resin powder with a particle size of 20-120 mesh.

[0053] Material properties:

[0054] The ASA resin obtained by the above preparation method has good comprehensive performance and wide application range, and can be used to prepare various outdoor plastic products. The performance data are tested as follow...

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Abstract

The invention provides an ASA (acrylonitrile styrene acrylate) graft copolymerization resin rubber powder. The ASA graft copolymerization resin rubber powder comprises the following components by parts by weight: 5-30 parts of butyl acrylate, 50-70 parts of styrene, 20-25 parts of acrylonitrile, 0.08-0.35 part of initiator, 0.05-0.5 part of emulgator, 150-500 parts of deionized water H2O, 0.025-0.15 part of diacrylic acid poly butylene terephthalate, 0.025-0.15 part of functionality monomer, 0.002-0.02 part of 1-dodecanethiol, 0.25-0.5 part of dispersing agent, and 0.01-0.05 part of sodium hydrosulfite. According to the ASA graft copolymerization resin rubber powder and the preparation method, the comprehensive properties of the resin can be remarkably improved, steps of amplifying grain size of latex and condensing are omitted, dosage of additives and water is reduced, the technological processes are shortened, the production efficiency is improved, and the manufacture cost is lowered by 30% compared with that of similar foreign products.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to an ASA graft copolymerization resin rubber powder and a preparation method thereof. Background technique [0002] ASA resin, as a new variety in the large series of ABS resins, is a graft copolymer composed of acrylonitrile-styrene-acrylate (Acrylonitrile-Styrene-Acrylate), and its structure shows that the resin is the continuous phase and the rubber is the dispersed phase. "Sea Island Structure". Compared with ABS, due to the introduction of acrylate rubber without double bonds to replace polybutadiene rubber with double bonds, the weather resistance of ASA has been fundamentally changed, which is about 10 times higher than that of ABS; and its chemical resistance In terms of durability, it is also obviously better than ABS resin, which greatly improves the shortcomings of ABS resin, such as the significant decrease in mechanical strength after long-term expo...

Claims

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Application Information

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IPC IPC(8): C08F265/04C08F212/10C08F220/44C08F2/38C08F2/26
Inventor 吴茉莉陈宝芳
Owner HANGZHOU HUACHUANG IND
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