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Rubber modified nylon composition

A rubber modification and composition technology, which is applied in the field of polymer compositions obtained by blending styrene-acrylonitrile-maleic anhydride copolymers, can solve the problem of high SAM consumption, complicated processing, and difficult compatibility of compatibilizers. To achieve the effect of improving interfacial cohesion and reducing interfacial tension

Inactive Publication Date: 2006-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is that there are technical problems in the previous literature that the compatibilizer is not easy to obtain, the content of MA in SAM is low, the amount of SAM is high, the processing process is complicated, and the selection of equipment is unreasonable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 57.6 parts by weight of granular dry PA6, 38.4 parts by weight of powdered ABS (wherein the weight content of PB is 70%) and 4 parts by weight of granular SAM (wherein the weight content of maleic anhydride and acrylonitrile are 6% and 18% respectively) were put into a container, turn it up and down repeatedly, and mix evenly. Then send this premixed material into Leistritz AG Mic-27 co-rotating twin-screw extruder made in Germany, operating temperature (from feed port to die): 200 / 220 / 230 / 245 / 250 / 250 / 255 / 255 / 255 / 250°C. The material is plasticized, kneaded, extruded, and finally cut into granules (3mm in diameter, 3-4mm in length). The residence time of the material in the extruder is about 20 seconds, and the screw speed is 150 rpm. The pellets produced were injection molded at 245-250°C into tensile and impact strips. These bars are used to test the physical properties, heat resistance and impact resistance of materials. The test results are shown in Table 1 No. ...

Embodiment 2

[0035] According to each step and condition of embodiment 1, only change PA6 weight part is 48.5; ABS weight part is 48.5; SAM weight part is 3, and its alloy test result is shown in Table 1.

Embodiment 3

[0037] According to each step and condition of embodiment 1, only change PA6 weight part is 67.2; ABS weight part is 28.8; SAM weight part is 4, and its alloy test result is shown in Table 1.

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Abstract

A rubber modified nylon composition used for preparing the nylon-plastic alloy is prepared from PA6 (30-80%), ABS (30-80%) including PB (20-80%), and SAM (2-10%) including AN (10-30%) and MA (1-15%). Its advantages high content of MA in SAM, less consumption of SAM and simple preparing process.

Description

technical field [0001] The present invention relates to a kind of composition of nylon, rubber and styrenic terpolymer, especially about containing nylon 6 (PA6), acrylonitrile-butadiene-styrene copolymer (ABS) and styrene-propylene A polymer composition obtained by blending nitrile-maleic anhydride (maleic anhydride) copolymer (SAM). Background technique [0002] Nylon (PA) has become a popular engineering resin because of its excellent strength, hardness, low coefficient of friction, wide service temperature, chemical resistance and wear resistance. However, such resins have inherent high notch sensitivity, ie exhibit a ductile side when not notched and brittle fracture when notched; and brittle fracture characteristics at low temperature and severe loading conditions. However, the chemical functional groups (amino group and carboxyl group) contained in the end of PA molecules bring convenience to its modification. [0003] PA / ABS alloy is a...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L9/00
Inventor 王荣伟王玮石正金
Owner CHINA PETROLEUM & CHEM CORP
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