Injection moulding composition based on reclaiming ABS

A composition and copolymer technology, applied in the direction of coating, etc., can solve the problems of not clarifying the mechanism of rABS performance degradation, and not considering the impact of resin performance persistence on thermal deformation temperature, etc., to achieve performance improvement, improve mechanical properties, The effect of reducing environmental pollution

Inactive Publication Date: 2007-08-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The aforementioned documents only proposed some toughening methods for the lack of toughness of rABS, and did not clarify the mechanism of rABS performance degradation, so it has limitations
While toughening, the influence of strength and modulus is ignored, and the influence of peroxides in rABS on the durability of resin properties and the consideration of heat distortion temperature are not considered.

Method used

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  • Injection moulding composition based on reclaiming ABS
  • Injection moulding composition based on reclaiming ABS
  • Injection moulding composition based on reclaiming ABS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0044] The weight ratio of each component in each embodiment is shown in Table 1. Weigh each component according to the ratio, mix it in a high-speed mixer for 4 minutes, and discharge the material. Put the raw material of the mixture into a twin-screw extruder for granulation. The temperature of the extruder is 200°C and the speed is 350 rpm. . Form the particles into test specimens in the injection molding machine, and test the properties according to the corresponding standards, see Table 2.

[0045] Table 1: Proportioning of Examples 1 to 3

[0046] Component

Example 1

Example 2

Example 3

rABS

89.5

86.5

81.5

Elastomer Toughener

SBR grafted SAN

elastomer

7

ABS high rubber powder

10

MBS

15

Nano Inorganic Particles

Nano calcium carbonate

3

Nano calcium carbonate

3

Nano calcium carbonate

3

...

Embodiment 4～6

[0057] According to the proportioning and the technology in embodiment 1, the nanoparticles in embodiment 4 were replaced by silicon dioxide, the nanoparticles in embodiment 5 were replaced by zinc oxide, and the nanoparticles in embodiment 6 were replaced by titanium oxide, the embodiment 4 ~ 6 performance test results are shown in Table 5.

[0058] Table 5: the test result of embodiment 4~6

[0059] Performance test item

[0060] The results of Examples 4 to 6 are not much different from the mechanical properties of Example 1, indicating that these nanoparticles are effective in toughening rABS. The difference is that zinc oxide and titanium oxide have the best weather resistance It has an advantage, because they are good UV shielding agents themselves, which is very helpful for maintaining the persistence of rABS.

Embodiment 7

[0062] According to the proportioning and technique among the embodiment 1, but the peroxide decomposer in the formula selects HALS-1 for use. The test results are roughly the same as those in Example 1, indicating that both C944 and HALS-1, as hindered amine compounds, have similar functions.

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Abstract

The invention discloses a lifting property and effective ABS injection moulding component based on reclaiming, which is characterized by the following: The mass percent is: 50-95% reclaiming ABS, 5-40% elastic body flexibilizer, 0.1%-0.5% hyperoxide dissociate agent, 0.1%-0.5% complex light stabilizer, 0.1%-0.5% anti-oxidant, 1%-10% inorganic nanometer particle and 1%-5% inclusive agent, wherein the weight of inorganic nanometer particle is the guideline of mass percent of inclusive agent. This invention can not only modify mechanics property of rABS, but also can make rABS possess persisted property and be used to injection product.

Description

technical field [0001] The invention relates to an injection molding composition based on recycled ABS (RecycledABS, rABS for short) and a preparation process thereof. Background technique [0002] ABS resin is a general term for impact-resistant thermoplastic resins composed of three components: Acrylonitrile, Butadiene, and Styrene. It is also called ABS polymer and ABS terpolymer. ABS resin combines the advantages of the three components, in which the styrene component provides good processing performance, the acrylonitrile component contributes to the strength and chemical resistance of the resin, and the butadiene component brings the resin Good impact performance. Of course, ABS resin is not a simple three-component copolymer, but a two-phase heterogeneous structure blend with microdispersed rubber-like polymers such as PB in the continuous phase of AS resin. Since SAN is grafted to the chain of the elastomer, PB Only with certain compatibility with SAN can the mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08K5/524B29C45/00C08L33/12C08L23/28C08L9/06C08L9/02C08L23/16C08L53/02C08K5/09C08K3/00
Inventor 雷华方仕江
Owner ZHEJIANG UNIV
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