阅读说明：本技术 一种改性abs树脂及其生产工艺 (Modified ABS resin and production process thereof ) 是由 雷丽 于 2020-07-16 设计创作，主要内容包括：本发明涉及树脂生产技术领域,公开了一种改性ABS树脂,ABS树脂73～78phr、B900复合抗氧剂0.5～1phr、EBS分散剂(乙烯双硬脂酰胺)1.5～2phr、Sb<Sub>2</Sub>O<Sub>3</Sub>(三氧化二锑)3～5phr、溴系阻燃剂FG-3000(溴化乙醚低聚物)11～14phr、EMI-100流动改性剂(超低分子量无规透明的三元共聚物)4～6phr,本发明还公开了一种改性ABS树脂生产工艺,具体生产工艺步骤如下：S1、聚合反应；S2、接枝聚合；S3、凝聚、脱水干燥；S4、挤出造粒。本发明通过在ABS树脂中添加B900复合抗氧剂、EBS分散剂、Sb<Sub>2</Sub>O<Sub>3</Sub>、溴系阻燃剂FG-3000和EMI-100流动改性剂,可以提高树脂的质量,改善其外观光泽度,增加其热稳定性,使其可以使适应在恶劣的环境中使用,提高其使用寿命,且具有较高的强度和硬度。(The invention relates to the technical field of resin production and discloses a modified ABS resin, 73-78 phr of ABS resin, 0.5-1 phr of B900 composite antioxidant, 1.5-2 phr of EBS dispersant (ethylene bis stearamide), and Sb 2 O 3 3 to 5phr (antimony trioxide), 11 to 14phr (brominated flame retardant) FG-3000 (brominated ether oligomer), and EMI-100 flow modifier (ultra-low molecular weight random transparent ternaryCopolymer) 4-6 phr, the invention also discloses a production process of the modified ABS resin, which comprises the following steps: s1, carrying out polymerization reaction; s2, graft polymerization; s3, coagulating, dehydrating and drying; and S4, extruding and granulating. The invention adds B900 composite antioxidant, EBS dispersant and Sb into ABS resin 2 O 3 The brominated flame retardant FG-3000 and the EMI-100 flow modifier can improve the quality of resin, improve the appearance gloss of the resin, increase the thermal stability of the resin, enable the resin to adapt to severe environment for use, prolong the service life of the resin and have higher strength and hardness.)

1. The modified ABS resin is characterized by comprising the following components in parts by weight:

73 to 78phr of ABS resin, 0.5 to 1phr of B900 composite antioxidant, 1.5 to 2phr of EBS dispersant (ethylene bis stearamide), Sb₂O₃3-5 phr (antimony trioxide), 11-14 phr (brominated flame retardant) FG-3000 (brominated ether oligomer), 4-6 phr (ultra-low molecular weight random transparent terpolymer) EMI-100 flow modifier, wherein phr represents the parts added for each 100 parts (by mass) of resin.

2. The modified ABS resin of claim 1, wherein the modified ABS resin is composed of the following components:

76phr of ABS resin, 0.5phr of B900 composite antioxidant and 1 of EBS dispersant.5phr、Sb₂O₃4phr (antimony trioxide), 13phr (brominated flame retardant) FG-3000 (brominated ether oligomer), and 5phr (EMI-100 flow modifier).

3. The modified ABS resin of claim 1, wherein the ABS resin comprises the following components: .

The ABS resin consists of the following components: 20 to 24phr of acrylonitrile, 26 to 30phr of butadiene and 48 to 52phr of styrene.

4. The modified ABS resin of claim 3, wherein the ABS resin is composed of the following components: 22phr of acrylonitrile, 28phr of butadiene and 50phr of styrene.

5. A production process of modified ABS resin is characterized by comprising the following specific production process steps:

s1, polymerization: adding 22phr of acrylonitrile, 28phr of butadiene and 50phr of styrene into a sol tank, adding 2-4 phr of an auxiliary agent, mixing and stirring, pumping into a first reaction kettle through a metering pump for polymerization reaction, and producing acrylonitrile-butadiene-styrene copolymer (ABS resin);

s2, graft polymerization: pumping the ABS resin obtained in the step S1 into a second reaction kettle, pumping air in the second reaction kettle by using a vacuum pump, filling nitrogen, and sequentially adding 0.5phr of B900 composite antioxidant, 1.5phr of EBS dispersant and 4phr of Sb₂O₃13phr of brominated flame retardant FG-3000 and 5phr of EMI-100 flow modifier, stirring and carrying out graft polymerization to obtain modified graft ABS emulsion;

s3, coagulation, dehydration and drying: pumping the modified graft ABS emulsion obtained in the step S2 into a third reaction kettle for coagulation, dehydration and drying to obtain modified ABS powder;

s4, extrusion granulation: and (4) adding the additive into the modified ABS powder obtained in the step (S3), and then feeding the modified ABS powder into a screw extruder for mixing, extruding into strips and dicing into granules to obtain the finished product of modified ABS resin.

6. The production process of the modified ABS resin as claimed in claim 5, wherein the polymerization temperature in S1 is controlled to be 80-90 ℃ and the polymerization time is controlled to be 24-68 h.

7. The production process of the modified ABS resin as claimed in claim 5, wherein the temperature of the graft polymerization in S2 is controlled to be 60-70 ℃ and the time of the graft polymerization is controlled to be 6-12 h.

Technical Field

The invention relates to the technical field of resin production, in particular to a modified ABS resin and a production process thereof.

Background

ABS resins have two basic properties: excellent toughness and high mechanical strength, and the impact resistance comes from rubber components; the strength comes from the matrix resin part, and the ABS resin has the stress resistance characteristic similar to SAN and PS, and has the yield deformation characteristic of HIPS and PB. The ABS resin has excellent comprehensive performance that the ABS resin becomes a resin with wide application, wherein the flame retardant is added into the ABS resin to greatly improve the flame retardant effect, but the flame retardant ABS has poor thermal stability due to the existence of a large amount of flame retardants.

Chinese patent discloses a high flame-retardant ABS resin and a production process thereof (publication number CN107964209A), the technology of the patent can remarkably reduce the combustion speed of the ABS resin by adding a composite flame retardant, the flame-retardant effect is improved along with the increase of the content of the flame retardant, but the thermal stability is poor, and the phenomena of aging and color-changing lamps can be rapidly generated in severe environment.

Disclosure of Invention

The invention aims to provide a modified ABS resin and a production process thereof, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a modified ABS resin, which consists of the following components:

73 to 78phr of ABS resin, 0.5 to 1phr of B900 composite antioxidant, 1.5 to 2phr of EBS dispersant (ethylene bis stearamide), Sb₂O₃3-5 phr (antimony trioxide), 11-14 phr (brominated flame retardant) FG-3000 (brominated ether oligomer), 4-6 phr (ultra-low molecular weight random transparent terpolymer) EMI-100 flow modifier, wherein phr represents the parts added for each 100 parts (by mass) of resin.

As a still further scheme of the invention: the modified ABS resin consists of the following components:

76phr of ABS resin, 0.5phr of B900 composite antioxidant, 1.5phr of EBS dispersant, Sb₂O₃4phr (antimony trioxide), 13phr (brominated flame retardant) FG-3000 (brominated ether oligomer), and 5phr (EMI-100 flow modifier).

As a still further scheme of the invention: the ABS resin comprises the following components: .

The ABS resin consists of the following components: 20 to 24phr of acrylonitrile, 26 to 30phr of butadiene and 48 to 52phr of styrene.

As a still further scheme of the invention: the ABS resin consists of the following components: 22phr of acrylonitrile, 28phr of butadiene and 50phr of styrene.

A production process of modified ABS resin comprises the following specific production process steps:

s1, polymerization: adding 22phr of acrylonitrile, 28phr of butadiene and 50phr of styrene into a sol tank, adding 2-4 phr of an auxiliary agent, mixing and stirring, pumping into a first reaction kettle through a metering pump for polymerization reaction, and producing acrylonitrile-butadiene-styrene copolymer (ABS resin);

s2, graft polymerization: pumping the ABS resin obtained in the step S1 into a second reaction kettle, pumping air in the second reaction kettle by using a vacuum pump, filling nitrogen, and sequentially adding 0.5phrB900 composite antioxidant, 1.5phrEBS dispersant and 4phrSb₂O₃13phr of brominated flame retardant FG-3000 and 5phr of EMI-100 flow modifier, stirring and carrying out graft polymerization to obtain modified graft ABS emulsion;

s3, coagulation, dehydration and drying: pumping the modified graft ABS emulsion obtained in the step S2 into a third reaction kettle for coagulation, dehydration and drying to obtain modified ABS powder;

s4, extrusion granulation: and (4) adding the additive into the modified ABS powder obtained in the step (S3), and then feeding the modified ABS powder into a screw extruder for mixing, extruding into strips and dicing into granules to obtain the finished product of modified ABS resin.

As a still further scheme of the invention: the temperature of the polymerization reaction in the S1 is controlled to be 80-90 ℃, and the time of the polymerization reaction is controlled to be 24-68 h.

As a still further scheme of the invention: the temperature of the graft polymerization in the S2 is controlled to be 60-70 ℃, and the time of the graft polymerization is controlled to be 6-12 h.

Compared with the prior art, the invention has the beneficial effects that:

adding B900 composite antioxidant, EBS dispersant and Sb into ABS resin₂O₃The brominated flame retardant FG-3000 and the EMI-100 flow modifier can improve the quality of resin, improve the appearance gloss of the resin, increase the thermal stability of the resin, enable the resin to adapt to severe environment for use, prolong the service life of the resin and have higher strength and hardness.

Drawings

FIG. 1 is a process flow diagram of a modified ABS resin production process;

FIG. 2 is a reaction diagram of a modified ABS resin production process;

FIG. 3 is a graph showing the results of the samples of comparative example two and example two.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a modified ABS resin is composed of the following components:

73 to 78phr of ABS resin, 0.5 to 1phr of B900 composite antioxidant, 1.5 to 2phr of EBS dispersant (ethylene bis stearamide), Sb₂O₃3-5 phr (antimony trioxide), 11-14 phr (brominated flame retardant) FG-3000 (brominated ether oligomer), 4-6 phr (ultra-low molecular weight random transparent terpolymer) EMI-100 flow modifier, wherein phr represents the parts added for each 100 parts (by mass) of resin.

Preferably, the modified ABS resin consists of:

76phr of ABS resin, 0.5phr of B900 composite antioxidant, 1.5phr of EBS dispersant, Sb₂O₃4phr (antimony trioxide), 13phr (brominated flame retardant) FG-3000 (brominated ether oligomer), and 5phr (EMI-100 flow modifier).

Preferably, the ABS resin comprises the following components: .

The ABS resin consists of the following components: 20 to 24phr of acrylonitrile, 26 to 30phr of butadiene and 48 to 52phr of styrene.

Preferably, the ABS resin consists of: 22phr of acrylonitrile, 28phr of butadiene and 50phr of styrene.

A production process of modified ABS resin comprises the following specific production process steps:

s1, polymerization: adding 22phr of acrylonitrile, 28phr of butadiene and 50phr of styrene into a sol tank, adding 2-4 phr of an auxiliary agent, mixing and stirring, pumping into a first reaction kettle through a metering pump for polymerization reaction, and producing acrylonitrile-butadiene-styrene copolymer (ABS resin);

s2, graft polymerization: pumping the ABS resin obtained in the step S1 into a second reaction kettle, pumping air in the second reaction kettle by using a vacuum pump, filling nitrogen, and sequentially adding 0.5phrB900 composite antioxidant, 1.5phrEBS dispersant and 4phrSb₂O₃13phr of brominated flame retardant FG-3000 and 5phr of EMI-100 flow modifier, stirring and carrying out graft polymerization to obtain modified graft ABS emulsion;

s3, coagulation, dehydration and drying: pumping the modified graft ABS emulsion obtained in the step S2 into a third reaction kettle for coagulation, dehydration and drying to obtain modified ABS powder;

s4, extrusion granulation: and (4) adding the additive into the modified ABS powder obtained in the step (S3), and then feeding the modified ABS powder into a screw extruder for mixing, extruding into strips and dicing into granules to obtain the finished product of modified ABS resin.

Preferably, the temperature of the polymerization reaction in S1 is controlled to be between 80 and 90 ℃, and the time of the polymerization reaction is controlled to be between 24 and 68 hours.

Preferably, the temperature of the graft polymerization in S2 is controlled to be between 60 and 70 ℃, and the time of the graft polymerization is controlled to be between 6 and 12 hours.

First, comparative example one: common flame-retardant ABS resin on market