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Aging-resistant HIPS expanded plastic and preparation method thereof

A foamed plastic and anti-aging technology, applied in the field of polymers, can solve problems such as cracking, mechanical property degradation, and brittleness, and achieve the effects of synergistically improving aging resistance, no decline in impact performance, and improving aging resistance

Active Publication Date: 2018-09-14
宁波灿烨塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after HIPS products are exposed to sunlight, heat, and oxygen for a long time outdoors, they will turn yellow, become brittle, crack, lose luster on the surface, and greatly reduce their mechanical properties, and eventually lose their use value.
This is because the double bond contained in the butadiene component in the HIPS molecule is easily oxidized and degraded under the action of ultraviolet light, resulting in poor weather resistance. Changes, deterioration of physical and mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] A kind of preparation method of above-mentioned anti-aging HIPS foamed plastics, is characterized in that, comprises the following steps:

[0030] (1) Put HIPS, PMMA, antibacterial agent, composite flame retardant, flame retardant synergist, antioxidant, and processing aid into the mixer and stir for 1-3 minutes to obtain mixed raw materials;

[0031] (2) Put the mixed raw material in step 2 and the mixing product in step 1 into a twin-screw extruder for reaction, and the material stays in the barrel for 1-2 minutes to obtain a reaction product. The twin-screw extruder The temperature of each zone is as follows: Zone 1 180-200℃, zone 2 200-220℃, zone 3 200-220℃, zone 4 200-220℃, zone 5 200-220℃, zone 6 200-220℃, zone 7 200- 220°C, eighth zone 200-220°C, nine zone 200-220°C, machine head 200-210°C.

[0032] (3) Squeeze the material in the twin-screw extruder into the HIPS foam molding mold, hold the pressure for 1 minute, and take out the HIPS foam molding after the mol...

Embodiment 1

[0034] An aging-resistant HIPS foamed plastic is characterized in that, in parts by mass, it comprises the following raw materials: 70 parts of HIPS, 15 parts of PMMA, 15 parts of PVC, 5 parts of inorganic anti-aging agent, 5 parts of organic anti-aging agent, and 10 parts of foaming agent 2 parts, 2 parts of fillers, 0.5 parts of antioxidant, 2 parts of processing aids; the inorganic anti-aging agent is conductive copper powder, nano-lanthanum oxide, and red mud is obtained by compounding in a mass ratio of 3:0.3:6, and the The organic anti-aging agent is obtained by compounding tetrabromobisphenol A and o-hydroxybenzophenone at a mass ratio of 1:3; the foaming agent is added with azodicarbonamide and hollow fibers at a ratio of 3:1.

[0035] The hollow fiber is a nylon 66 fiber with a hollow rate of 50%. The processing aid is a stearylamide lubricant. The antioxidant is a polybasic hindered phenol antioxidant. The filler is talcum powder.

[0036] A preparation method acc...

Embodiment 2

[0041] An aging-resistant HIPS foamed plastic, characterized in that, in parts by mass, it comprises the following raw materials: 60 parts of HIPS, 20 parts of PMMA, 10 parts of PVC, 6 parts of inorganic anti-aging agent, 3 parts of organic anti-aging agent, and 15 parts of foaming agent 1 part, 1 part of filler, 1 part of antioxidant, 1 part of processing aid; The inorganic anti-aging agent is conductive copper powder, nano-lanthanum oxide, and red mud is obtained by compounding in a mass ratio of 4:0.2:8, and the The organic anti-aging agent is obtained by compounding tetrabromobisphenol A and o-hydroxybenzophenone at a mass ratio of 1:2; the foaming agent is added with azodicarbonamide and hollow fibers at a ratio of 4:1.

[0042] The hollow fiber is a nylon 66 fiber with a hollow rate of 30%. The processing aid is one or a mixture of stearylamide lubricants, silicone oil and white mineral oil. The antioxidant is a polybasic hindered phenol antioxidant. The filler is zinc...

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PUM

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Abstract

The invention discloses aging-resistant HIPS expanded plastic and a preparation method thereof. The aging-resistant HIPS expanded plastic comprises HIPS, PMMA, PVC, an inorganic anti-aging agent, an organic anti-aging agent, a foaming agent, filler, antioxidant and processing auxiliaries. The aging-resistant HIPS expanded plastic and the preparation method thereof have the advantage that by optimizing components and use amount, the prepared expanded plastic is excellent in aging resistance under the premise that the impact resistance of the plastic is not lowered.

Description

technical field [0001] The invention belongs to the technical field of polymers, and in particular relates to an aging-resistant HIPS foamed plastic and a preparation method thereof. Background technique [0002] The continuous bulk polymerization method of rubber grafted toughened polystyrene polymer, that is, HIPS resin, uses polybutadiene rubber or butadiene-styrene copolymer rubber as a toughening agent, and dissolves the toughening agent in a certain proportion Styrene and / or an appropriate amount of solvent, prepared by thermal initiation or initiator initiation. In the literature (Peng F M. Polybutadienegrafting and crosslinking in high-impact polystyrene bulkthermal process. Journal of Applied Polymer Science, 1990, 40(7-8): 1289-1302.), the polymerization kinetics of the thermal initiation of the bulk method to prepare HIPS resin Learned in detail. CN1609126A adopts rubber with special structure as toughening agent to prepare HIPS resin with microcosmic structure ...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L33/12C08L27/06C08K3/08C08K3/22C08K5/132C08K5/13C08J9/12C08J9/10
CPCC08J9/0023C08J9/0066C08J9/008C08J9/103C08J9/122C08J2203/04C08J2203/06C08J2351/04C08J2427/06C08J2433/12C08K5/13C08K5/132C08K13/02C08K2003/085C08K2003/221C08K2201/001C08K2201/011
Inventor 姜丽丽
Owner 宁波灿烨塑业有限公司