CN105462150A - ABS-HIPS (acrylonitrile-butadiene-styrene/high impact polystyrene) alloy and preparation method thereof - Google Patents

Abstract

The invention provides an ABS-HIPS (acrylonitrile-butadiene-styrene/high impact polystyrene) alloy and a preparation method thereof. The alloy comprises components in parts by weight as follows: 55-95 parts of ABS, 5-45 parts of HIPS, 0.5-10 parts of SG (styrene-glycidyl methacrylate copolymer), 0.5-10 parts of SAM (styrene-maleic anhydride-acrylonitrile copolymer), 0.4 parts of an antioxidant and 0.2 parts of a lubricant. The preparation method comprises steps as follows: ABS, SG, SAM,HIPS, the antioxidant and the lubricant are uniformly mixed, are subjected to extrusion at the temperature of 180-220 DEG C and then are subjected to bracing, cooling, pelleting and drying, and the ABS-HIPS alloy is obtained. Compared with the prior art, the ABS-HIPS alloy has the benefits as follows: with the adoption of the SG and SAM compounding use method, the compatibility between ABS and HIPS is improved, and accordingly, the performance of the ABS-HIPS alloy is improved.

Description

ABS-HIPS Alloy And Preparation Method

Technical field

The present invention relates to a kind of ABS-HIPS Alloy And Preparation Method, belong to modified plastics technical field.

Background technology

Acrylonitrile-butadiene-styrene copolymer (ABS) and high-impact polystyrene (HIPS) have excellent mechanical property, and be easy to forming process, be widely used in the electric and office equipment fields such as household electrical appliance, computer and perimeter equipment, print copying device.Along with the replacement cycle of the electronics such as household electrical appliance, computer is shorter and shorter, a large amount of ABS and the HIPS plastic that need recovery will be produced.Independent ABS and HIPS reclaims not much problems, but ABS and HIPS consistency extreme difference, even if having few HIPS or polystyrene (PS) to be mixed into ABS all may produce the problems such as layering, peeling, physicals deterioration.And HIPS and ABS Application Areas is overlapping, outward appearance and similar density, even strict management and control sorting has part to be mixed into all unavoidably.This brings larger problem to the recovery of ABS and HIPS.

How to improve ABS/HIPS blend performance to have become, reclaim ABS, HIPS field problem demanding prompt solution.Xu Xiao adopts by force styrene-maleic anhydride copolymer as the compatilizer of HIPS/ABS, the consistency of intermingling material is studied, by the test of scanning electron microscope analysis and mechanical property, prove that styrene-maleic anhydride copolymer serves HIPS/ABS blend and increase consistency effect, but commercial styrene-copolymer-maleic anhydride maleic anhydride content is too high not good with styrene-compatible, relative consistency is improved not good.Dong Zhixian, Zhou Yanhao etc. have studied chlorinatedpolyethylene, styrene/butadiene/styrene block copolymers (SBS) and styrene-butadiene copolymer (K resin) has compatibilization and toughening modifying function in various degree to ABS/HIPS intermingling material.Chlorinatedpolyethylene easily decomposes under the processing temperature of ABS, and AS consistency bad in SBS and K resin and ABS, effect is unstable.Application number CN201410168951.X, HIPS/ABS blending and modifying matrix material and preparation method thereof, do compatilizer with epoxy resin and improve consistency, this method is based on molecular rupture possible in material processing and consequent polar group and epoxy reaction, reconnected by the molecular chain of fracture randomly, therefore effect is uncertain.Styrenic mixing reclaimed materials CN102888072A, styrenic mixing reclaimed materials preparation method CN102863735A, reclaim ABS and HIPS mixture with core-shell tougheners and styrenic block polymers modification.This method make use of the elasticity of core-shell tougheners and styrene block polymerization, improves the impact property of blend, but limited to the Compatibility improvement of blend.

Summary of the invention

Object of the present invention is providing a kind of ABS/HIPS Alloy And Preparation Method.The ABS/HIPS prepared by present method can improve shock strength when not adding toughner.

The present invention is achieved by the following technical solutions:

First aspect, the present invention provides a kind of ABS-HIPS alloy, and it comprises the following component counted by weight:

It is main alloy material by ABS that the content of ABS, HIPS shows that this is, take ABS as external phase, performance more close to ABS, better effects if.The amount of SG and SAM, according to the ratio-dependent of ABS and HIPS, easily causes crosslinked when SG, SAM content is too much, cause material flowability to be deteriorated, and bring a series of adverse consequences thus, as impacted reduction, injection moulding cannot mold filling etc., and material cost separately also can be caused to increase.Content is too low, does not have effect.Oxidation inhibitor and lubricant are then conventional amount used, too much increase cost, very few poor effect.

Preferably, in described SG (styrene-t glycidyl ester copolymer), the content of glycidyl methacrylate is 1 ~ 10wt%.

Preferably, the preparation method of described SG comprises the steps:

After vinylbenzene, glycidyl methacrylate are carried out suspension polymerization at 75 DEG C, obtain SG.

Preferably, in described SAM (phenylethylene-maleic anhydride-acrylonitrile copolymer), cinnamic content is 52 ~ 74wt%, and the content of vinyl cyanide is 18 ~ 24wt%, and the content of maleic anhydride is 1 ~ 30wt%.

Preferably, described oxidation inhibitor is phenolic antioxidant or phosphoric acid ester oxidation inhibitor.

Preferably, described lubricant is silicone lubricant or amides lubricant.

Second aspect, present invention also offers a kind of preparation method of ABS-HIPS alloy as the aforementioned, it comprises the steps:

After ABS, SG, SAM, HIPS, oxidation inhibitor and lubricant are mixed, extrude at 180 ~ 220 DEG C, then by tie rod, cooling, granulation and drying, obtain described ABS-HIPS alloy.

Compared with prior art, the present invention has following beneficial effect:

The present invention adopts the method for styrene-t glycidyl ester copolymer (SG) and phenylethylene-maleic anhydride-acrylonitrile copolymer (SAM) compound use, SG and SAM at melt blending time react, forming section is compatible with ABS, the structure that part is compatible with HIPS, the polymkeric substance of new formation can strengthen the bonding force between ABS, HIPS, thus the consistency improved between ABS/HIPS, thus improve its performance.The novel polymer formed due to SG and SAM reaction is rigid structure, can not cause the decline of the modulus of material.Meanwhile, ABS and HIPS consistency improves, and has made the impact property caused because consistency is not good up and has declined.Therefore SG and SAM coupling under the condition of not additional toughner, can improve the impact property of ABS/HIPS, does not reduce the modulus of material simultaneously.

Embodiment

Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.

The preparation method of SG used in the present invention is: will be obtained by suspension polymerization, 1g Diisopropyl azodicarboxylate is dissolved in 100g vinylbenzene, glycidyl methacrylate mixture (wherein glycidyl methacrylate content 1 ~ 10wt%), add polyvinyl alcohol water solution (being dissolved in by 0.3 gram of polyvinyl alcohol in 150g water obtained) again, at 75 DEG C, carry out suspension polymerization after 4 ~ 6 hours, namely washing, drying are SG.

SAM used in the present invention purchased from cloud tints electronics novel material company limited of Shanghai China, trade mark SMA-800.

embodiment 1

Following component is taken according to parts by weight:

Be mixed even in high-speed mixer by above component, be added in twin screw extruder, extruder temperature is arranged between 180 DEG C-220 DEG C, and mixture is frit reaction at this temperature.Through extruding tie rod, cooling granulation, drying obtain required alloy.

embodiment 2

Following component is taken according to parts by weight:

Be mixed even in high-speed mixer by above component, be added in twin screw extruder, extruder temperature is arranged between 180 DEG C-220 DEG C, and mixture is frit reaction at this temperature.Through extruding tie rod, cooling granulation, drying obtain required alloy.

comparative example 1

Take following component by weight:

Be mixed even in high-speed mixer by above component, be added in twin screw extruder, extruder temperature is arranged between 180 DEG C-220 DEG C, and mixture is melting at this temperature, mediates, and through extruding tie rod, cooling granulation, drying obtain desired product.

comparative example 2

Following component is taken according to parts by weight:

Be mixed even in high-speed mixer by above component, be added in twin screw extruder, extruder temperature is arranged between 180 DEG C-220 DEG C, and mixture is frit reaction at this temperature.Through extruding tie rod, cooling granulation, drying obtain required alloy.

Embodiment 1, embodiment 2, comparative example 1, comparative example 2 products obtained therefrom are pressed ASTMD256 and are tested impact property, and result is as shown in table 1:

Table 1

	Embodiment 1	Comparative example 1	Embodiment 2	Comparative example 2
					IZOD notched Izod impact strength J/m	130	90	107	70

Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.

Claims (7)

1. an ABS-HIPS alloy, is characterized in that, comprises the following component counted by weight:

2. ABS-HIPS alloy as claimed in claim 1, it is characterized in that, in described SG, the content of glycidyl methacrylate is 1 ~ 10wt%.

3. ABS-HIPS alloy as claimed in claim 2, it is characterized in that, the preparation method of described SG comprises the steps:

After vinylbenzene, glycidyl methacrylate are carried out suspension polymerization at 75 DEG C, obtain SG.

4. ABS-HIPS alloy as claimed in claim 1, it is characterized in that, in described SAM, cinnamic content is 52 ~ 74wt%, and the content of vinyl cyanide is 18 ~ 24wt%, and the content of maleic anhydride is 1 ~ 30wt%.

5. ABS-HIPS alloy as claimed in claim 1, it is characterized in that, described oxidation inhibitor is phenolic antioxidant or phosphoric acid ester oxidation inhibitor.

6. ABS-HIPS alloy as claimed in claim 1, it is characterized in that, described lubricant is silicone lubricant or amides lubricant.

7. a preparation method for ABS-HIPS alloy as claimed in claim 1, is characterized in that, comprise the steps:

After ABS, SG, SAM, HIPS, oxidation inhibitor and lubricant are mixed, extrude at 180 ~ 220 DEG C, then by tie rod, cooling, granulation and drying, obtain described ABS-HIPS alloy.