In-situ compatibilization polyolefin/polystyrene alloy and preparation method and application thereof

An in-situ compatibilization and polystyrene technology, which is applied in the field of thermoplastic modification, can solve the problems of limited application and achieve the effect of reducing production cost and good comprehensive performance

Active Publication Date: 2013-10-23
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, expensive reagents or structurally specific copolymers are usually selected for the introduction of reactive functional groups.
Although its dosage is very small compared with non-reactive compatibilizers, it still limits its application in industrial production to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An in-situ compatibilized PO / PS alloy, the preparation raw material is composed of the following components by mass percentage:

[0037] Homopolypropylene resin (MI=3): 53.6%

[0038] General-purpose polystyrene (MI=8): 13.4%

[0039] Low-density polyethylene (MI=8): 10%

[0040] Primer Compatibilizer: 2.6%

[0041] 1250 mesh talcum powder: 20%

[0042] Antioxidant (1010 / 168=1:1; weight ratio): 0.2%

[0043] Ethylene bis stearamide: 0.2%;

[0044] The preparation method is as follows: uniformly mix polyolefin, polystyrene and compatibilization initiator mother liquor, then add processing aids and mix evenly to obtain a premix; add the premix to a twin-screw extruder, polyolefin and poly Styrene undergoes in-situ compatibilization during blending and extrusion, and PO / PS alloy is obtained after melt extrusion at 190-230 °C. The relevant properties of the alloy are shown in Table 1.

[0045] Used compatibilization triggers mother liquor, is that 20kg double 25, 40kg ...

Embodiment 2

[0047] An in-situ compatibilized PO / PS alloy, the preparation raw material is composed of the following components by mass percentage:

[0048] Copolymerized polypropylene resin (MI=6): 46.9%

[0049] General-purpose polystyrene (MI=8): 20.1%

[0050] Linear low density polyethylene (MI=2): 10%

[0051] Primer Compatibilizer: 2.6%

[0052] Talc powder (1250 mesh / 3000 mesh=1:1; weight ratio): 20%

[0053] Antioxidant (1790 / 168=1:1; weight ratio): 0.2%

[0054] Ethylene bis stearamide (EBS): 0.2%;

[0055] Its preparation method is the same as in Example 1, and the relevant properties of the obtained alloy are shown in Table 1-2.

[0056] Used compatibilization triggers mother liquor, is 20kg 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexyne, 80kg triallyl isocyanurate (TAIC), 100kg Add O-W02 (O-W02 is a kind of paraffin oil, purchased from Foshan Daqing Linyuan Chemical Co., Ltd.) into a 400L reactor equipped with an electric stirrer, and stir and mix at room temperature and ...

Embodiment 3

[0058] An in-situ compatibilized PO / PS alloy, the preparation raw material is composed of the following components by mass percentage:

[0059] Copolymerized polypropylene resin (MI=6): 46.9%

[0060] High impact polystyrene (MI=8): 20.1%

[0061] Linear low density polyethylene (MI=2): 8%

[0062] Primer Compatibilizer: 2.6%

[0063] Calcium Carbonate: 22%

[0064] Antioxidant (1010 / 168=1:1; weight ratio): 0.2%

[0065] Zinc stearate: 0.2%;

[0066] Its preparation method is the same as in Example 1, and the relevant properties of the obtained alloy are shown in Table 1-2.

[0067] Used compatibilization triggers mother liquor, is with 20kg dicumyl peroxide, 20kg triallyl isocyanuric acid ester (TAIC), 160kg O-W02 (O-W02 is a kind of paraffin oil, purchased from Foshan City Daqing Linyuan Chemical Co., Ltd.) into a 400L reactor equipped with an electric stirrer, stirred and mixed for 5 minutes at normal temperature and a rotating speed of 50 to 800rpm to prepare a conte...

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Abstract

The invention discloses an in-situ compatibilization PO / PS (polyolefin / polystyrene) alloy and a preparation method and application thereof. The alloy is prepared by 45-65% of polyolefin, 10-30% of polystyrene, 2-5% of compatibilization initiation mother liquor and 20-25% of processing agent, and the compatibilization initiation mother liquor is obtained by dissolving crosslinking agent and crosslinking agent auxiliaries to oily carrier., wherein the crosslinking agent is at least one of 2, 5-dimethyl-2, 5-di (tertiary butyl peroxide) hexine, 2, 5-dimethyl-2, 5-di (tertiary butyl peroxide) hexane or dicumyl peroxide, and the crosslinking agent auxiliaries is at least one of liquid polybutadiene, prussic acid ester type substances, isocyanate substances or acrylate substances. Compared with the dynamic sulfuration in-situ compatibilization method and the common compatibilization method, the preparation of the in-situ compatibilization PO / PS alloy is capable of effectively reducing production cost of the PO / PS alloy, the PO / PS alloy prepared has lower molding shrinkage rate, higher modulus and excellent overall performance and can be used as substitutes for acrylonitrile butadiene styrene partially.

Description

technical field [0001] The invention belongs to the field of thermoplastic modification, and in particular relates to a high-performance, low-shrinkage in-situ compatibilized PO / PS alloy, a preparation method and application thereof. Background technique [0002] Polyolefin (PO) general-purpose plastics, such as PP, HDPE, LDPE, LLDPE, etc., have excellent comprehensive properties, good chemical stability, good molding performance and low price; but it also has poor strength, mold Low weight, low hardness, large molding shrinkage and other shortcomings. Compared with PO, PS has higher hardness and low shrinkage, and excellent printability, but PS has poor environmental stress cracking resistance, toughness and solvent resistance. In order to obtain materials with excellent comprehensive properties, people have carried out research on the modification of PO and PS, trying to prepare a plastic alloy that combines the excellent properties of the two. [0003] As we all know, P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/06C08L23/08C08L23/16C08L25/06C08L51/00C08L47/00C08K5/14C08K5/3492C08K5/101C08K3/26C08K3/34C08K3/30
Inventor 叶林铭肖鹏叶南飚陈大华陶四平阳范文吴博
Owner KINGFA SCI & TECH CO LTD
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