A kind of high temperature resistant ABS composite material and preparation method thereof
A composite material and high temperature resistant technology, applied in the field of high temperature resistant ABS composite material and its preparation, can solve the problems of poor heat resistance, low rigidity and hardness, achieve high softening point, good thermal conductivity and impact strength, and improve rigidity Effect
Active Publication Date: 2022-06-07
湖州伟悦高分子材料有限公司
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Problems solved by technology
[0003] However, ABS is an amorphous polymer, and there are relatively few rigid groups on the main chain of the molecule. Its rigidity and hardness are relatively low at a temperature higher than 85°C, and its heat resistance is still poor. In recent years, with various With the rapid development of the field, some plastic products such as automotive interiors, parts, kitchen appliances, daily necessities, and even office supplies need to be able to withstand more heat in a small space, so as to achieve thinner and smaller. Therefore, further improve the performance of ABS. High temperature resistance is very important
Method used
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preparation example 1
[0033] First mixture: 3.5 parts acrylonitrile, 0.25 parts tert-butyl hydrogen peroxide, 7 parts styrene, 0.15 parts dodecyl mercaptan;
[0034] Second mixture: 3.5 parts acrylonitrile, 0.25 parts tert-butyl hydrogen peroxide, 6 parts diphenyl p-styrenephosphine, 0.15 parts dodecyl mercaptan, 9.9 parts DMF;
[0035] 30 parts of polybutadiene latex, 0.2 parts of sodium dodecylbenzenesulfonate, 0.02 parts of ferrous sulfate were added to the reactor, and deionized water was added to dilute and diluted to a curing amount of 30wt%, pass N 2 , heat up to 70 °C, the first mixture, the second mixture in 5 equal amounts of alternating drip, 3.5h drop, constant temperature reaction for 2h, add 0.05 parts of tert-butyl hydrogen peroxide, continue the constant temperature reaction for 2h, after the end of the reaction, demulsification, condensation washing, drying, extrusion, granulation to get modified ABS.
preparation example 2
[0037] The rest is the same as Example 1, the difference is that the amount of diphenyl p-styrylphosphine in the second mixture is 2 servings.
preparation example 3
[0039] The rest is the same as Example 1, the difference is that the amount of styrene in the first mixture is 11 servings.
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Abstract
The invention provides a high-temperature-resistant ABS composite material, which comprises the following raw materials: modified ABS, heat-conducting materials, antioxidants, lubricants, and the modified ABS is formed by graft polymerization of polybutadiene latex and grafted monomers , the graft monomer is a combination of styrene, acrylonitrile and unsaturated triphenyl compound. The present invention introduces the graft monomer unsaturated triphenyl compound into ABS, and the unsaturated triphenyl compound is connected to the double bond of the polybutadiene part under the influence of steric hindrance effect in the polymerization process, which can not only improve the Rigidity, and the introduction of benzene rings are all conducive to improving the high temperature resistance of composite materials based on this modified ABS. Unexpectedly, the present invention finds that the unsaturated triphenyl compound can cooperate with silicon nitride to improve the thermal conductivity and impact strength of the ABS composite material. The preparation method of the invention is simple, green and environment-friendly, and suitable for industrial scale-up production.
Description
Technical field [0001] The present invention belongs to the field of polymer material modification technology, specifically relates to a high temperature resistant ABS composite material and preparation method thereof. Background [0002] ABS resin is styrene (ST), acrylonitrile (AN), butadiene (Bd) three monomer free radical copolymers, with a two-phase structure, one phase is the binary copolymer SAN of ST and AN composed of continuous phase, the other phase is the dispersed phase of polybutadiene rubber graft SAN. Due to the particularity of the two-phase structure, ABS has good mechanical properties, high temperature resistance, chemical resistance and excellent processing performance, and the shrinkage rate is small, the water absorption rate is low, is a comprehensive performance of very good engineering plastics, widely used in electronic components, office supplies, automobiles and construction and other fields. For example, patent CN200510026660.8 discloses a preparation...
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IPC IPC(8): C08L55/02C08K3/34C08K3/28C08F279/02C08F212/10C08F220/44C08F212/32
CPCC08K3/34C08K3/28C08F279/02C08L2201/08C08K2003/282C08F212/10C08F220/44C08F212/32C08L55/02
Inventor 陈伟成陈悦巧
Owner 湖州伟悦高分子材料有限公司