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Stress-whitening-resisting modified styrene-based resin and preparation method thereof

A styrene-based resin and stress-resistant technology, which is applied in the field of stress-whitening-resistant modified styrene-based resin and its preparation, can solve the problems of general internal stress elimination effect, achieve the prevention of stress-whitening phenomenon and high production efficiency , good mechanical properties

Inactive Publication Date: 2017-05-24
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the structure of the product itself is relatively complicated by this method, the effect of internal stress relief is relatively general.

Method used

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  • Stress-whitening-resisting modified styrene-based resin and preparation method thereof
  • Stress-whitening-resisting modified styrene-based resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Mix 85 parts of ABS 8434 resin, 15 parts of superfine talc powder (6000 mesh), 0.3 parts of light and heat stabilizer (antioxidant 1076:antioxidant 168=1:2, mass ratio) and 0.1 part of lubricant Stearic acid amide (SR) is mixed evenly by high-speed stirring;

[0043] (2) Send the above mixture into a twin-screw extruder to extrude and granulate to obtain a styrene-based resin;

[0044] In the step (2), the screw temperature of the twin-screw extruder is 400 r / min.

[0045] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

Embodiment 2

[0047] (1) Mix 98 parts of ABS8434 and ASA PW-957 resin mixture (ABS8434:ASA PW-957=2:1, mass ratio), 2 parts of superfine talcum powder (7000 mesh), 0.6 parts of light and heat stabilizer (anti- Oxygen agent DLTP: Antioxidant DBTL=1:1, mass ratio) and 0.5 parts of lubricant silicone oil are mixed evenly by high-speed stirring;

[0048] (2) Send the above mixture into a twin-screw extruder to extrude and granulate to obtain a styrene-based resin;

[0049] In the step (2), the screw temperature of the twin-screw extruder is 500 r / min.

[0050] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

Embodiment 3

[0052] (1) Mix 90 parts of ASA PW-957 resin, 10 parts of superfine talc powder (6000 mesh), 0.1 part of light and heat stabilizer (DLTP: 2,6-tertiary butyl-4-methylphenol=2:1 , mass ratio) and 1 part of lubricant EBS were mixed evenly by high-speed stirring;

[0053] (2) Send the above mixture into a twin-screw extruder to extrude and granulate to obtain a styrene-based resin;

[0054] In the step (2), the screw temperature of the twin-screw extruder is 300 r / min.

[0055] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

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Abstract

The invention provides stress-whitening-resisting modified styrene-based resin and a preparation method thereof. The stress-whitening-resisting modified styrene-based resin is prepared from, by weight, 80-98 parts of styrene-based resin, 2-20 parts of superfine talcum powder, 0.1-1 part of photo-thermal stabilizer and 0.1-1 part of lubricant through mixing and extrusion pelleting. The grain size of the superfine talcum powder ranges from 6,000 mesh to 7,000 mesh. The prepared material is good in mechanical performance and has the advantages of being easy to process and form and the like, especially the stress-whitening-resisting phenomenon of the material is controlled, and the material can be used for the product occasion that various materials required to keep the appearances and the like under the condition of bearing external force many times are formed.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified styrene-based resin resistant to stress whitening and a preparation method thereof. Background technique [0002] Styrene-based resin is a very commonly used polymer material with a wide range of applications, but its products often appear local whitening when they are subjected to external forces such as stretching, bending, and impact during use, that is, We call stress blanching. The stress whitening of the product not only affects its appearance, but also leads to a decrease in the elongation at break, a decrease in the strength, and a deterioration in the stress cracking resistance of the product. In severe cases, it will affect the use of the product. At present, the more common solution to the stress whitening of styrene-based resin products is to heat-treat the products, that is, to place the products under certain temperature conditions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L51/04C08L25/12C08K3/34C08K5/526C08K5/20
Inventor 杨桂生李晓庆
Owner HEFEI GENIUS NEW MATERIALS
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