Preparation method of transparent toughened polystyrene functional color masterbatch

A technology of polystyrene and color masterbatch, which is applied in the field of preparation of transparent and toughened polystyrene functional color masterbatch, can solve the problems of insufficient rigidity, decrease of transparency, influence on transparency, etc., achieve obvious toughening effect, improve poor, The effect of improving toughness

Active Publication Date: 2013-04-24
QINGDAO RICH PLASTIC NEW MATERIAL
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to improve the toughness of GPPS without significantly affecting the transparency of the material, people use butadiene and acrylate compounds as modifiers to obtain materials with both transparency and toughness through polymerization reactions. The products that have been industrialized so far include: Butadiene / styrene copolymer (K ​​resin), methyl methacrylate / butadiene / styrene copolymer (MBS), methyl methacrylate / styrene copolymer (MS), etc. Compared with GPPS, its toughness has been significantly improved, but the rigidity is obviously insufficient, and the transparency has also decreased to a certain extent. , its application is limited

Method used

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  • Preparation method of transparent toughened polystyrene functional color masterbatch

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preparation example Construction

[0024] Preparation and performance testing of polystyrene materials: the transparent toughened polystyrene functional color masterbatch made by the embodiment of the present invention and the common transparent polystyrene color masterbatch of the comparative example are respectively mixed with GPPS raw materials according to the weight of 1:25 Ratio mixed, and injection molded into tensile and impact splines and sheets with a length of 80mm×width 45mm×thickness 4mm required by GB / T1843 and GB / T1040 test standards. The following tests are carried out: 1. Test according to GB / T1843 and GB / T1040 Standard, under the same conditions, respectively measure the elongation at break of each tensile sample and the impact strength of the impact sample, and record them in Table 1. 2. According to the GB / T2410 test standard, under the same conditions, measure the light transmittance of each sheet, and record it in Table 1.

[0025] The larger the values ​​of impact strength and elongation ...

Embodiment 1

[0027] The steps of the preparation method of the transparent toughened polystyrene functional color masterbatch of the present embodiment are as follows:

[0028] Step 1: First add the GPPS raw material into a plastic mill, grind it into 50-150 mesh powder GPPS, and then mix it with vegetable oil and mineral oil in a high-speed mixer with a speed of 500r / min for 30 minutes to make the powder GPPS Fully absorb oil.

[0029] Step 2: Add MBS, antioxidant, lubricant, dispersant and transparent pigment into a high-speed mixer, and mix at a high speed of 800r / min for 3 minutes.

[0030] Step 3: Mix all the uniformly mixed materials under the condition of 180-230° C., knead with a twin-screw extruder, and cut into pellets with a water ring hot pelletizer to obtain transparent toughened polystyrene functional color masterbatch pellets.

[0031] The vegetable oil in this example uses olive oil; the mineral oil uses liquid paraffin oil; tert-butylphenyl) phosphite. The total weight...

Embodiment 2

[0044] The difference between this example and Example 1 is that the vegetable oil in this example is corn oil; the mineral oil is liquid paraffin oil; the antioxidant is tetrabeta (3,5-di-tert-butyl-4-hydroxyphenyl) pentaerythritol ester and tris(2,4-di-tert-butylphenyl)phosphite. The total weight of all components of the present embodiment is 200kg, and the weight ratio of each component is:

[0045] Powder GPPS 50 parts

[0046] MBS 42 copies

[0047] 3 parts corn oil

[0048] 3 parts liquid paraffin oil

[0049] 0.2 part

[0050] Tris(2,4-di-tert-butylphenyl)phosphite 0.2 parts

[0051] Lubricant EBS 0.3 parts

[0052] Lubricant ZnSt 0.3 parts

[0053] Dispersant modified EBS 0.5 part

[0054] Transparent azo yellow pigment 0.5 part

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Abstract

The invention discloses a preparation method of a transparent toughened polystyrene functional color masterbatch and belongs to the technical field of polymer material modification. The preparation method is characterized in that GPPS as a base resin raw material, MBS and an oily flexibilizer as main functional assistants, a transparent pigment, and various processing auxiliary agents are mixed uniformly; and the mixture is mixed by a double-screw extruder and then is cut into the transparent toughened polystyrene functional color masterbatches by a water loop heating granulator. Through mixing use of the transparent toughened polystyrene functional color masterbatches and the GPPS raw material, material toughness is improved; undesirable effects produced by stress cracking on a workpiece is improved obviously; and transparent color effects of the GPPS raw material are obtained. The transparent toughened polystyrene functional color masterbatch does not influence material transparency, has wide application prospects in fields of household electrical appliance, office supplies, electronic and electrical products and package, and is especially suitable for injection molding of transparent refrigerator drawers.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, and in particular relates to a preparation method of a transparent and toughened polystyrene functional color masterbatch. Background technique [0002] General-purpose polystyrene (GPPS) is a commonly used plastic, which has the advantages of good transparency and low price. As a general-purpose plastic, its main disadvantages are brittle and easy to crack, and low impact strength. High-impact polystyrene (HIPS), which is prepared by polymerization with polybutadiene rubber as a toughening agent, is widely used in the fields of electronics, electricity, office, daily necessities, etc. However, this material also has obvious The disadvantage, mainly due to the introduction of polybutadiene rubber in the material, makes the material almost opaque. [0003] In order to improve the toughness of GPPS without significantly affecting the transparency of the material, people use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L51/04C08K13/02C08K5/103C08K5/01C08J3/22
Inventor 张明连赵宁牛茂平刘机关金海木欧阳晓琛
Owner QINGDAO RICH PLASTIC NEW MATERIAL
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