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Glass fiber reinforced polystyrene micro-foam double-layer co-extrusion section and its making method

A polystyrene and glass fiber technology, which is applied in the field of glass fiber reinforced polystyrene micro-foamed double-layer co-extruded profiles and its production, can solve problems not related to the micro-foaming process, achieve increased fluidity, strengthen Plasticizing effect, effect of continuous mass production

Active Publication Date: 2013-07-24
SHANGHAI INTCO INDUSTRIES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the technology of glass fiber to reinforce polyethylene, polypropylene, nylon and other materials has become mature, and the mechanical properties of the reinforced material have been significantly improved, but this type of reinforcement technology has a common feature, that is, the process Neither involved the micro-foaming process
However, there are not many research reports on adding glass fiber to micro-foaming materials, and it is even rarer to add glass fiber to the micro-foaming process of polystyrene recycled plastics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] A glass fiber reinforced polystyrene micro-foamed double-layer co-extruded profile, characterized in that the surface-modified glass fiber reinforced micro-foamed core part is uniformly wrapped with a layer of high-impact polystyrene . The core material includes the following components by weight: 100 parts of polystyrene, 3-8 parts of molecular chain repair agent, 3-8 parts of glass fiber, 0.03-0.08 parts of coupling agent, 1-5 parts of foaming agent, 1 part of grease ~5 parts; the surface material includes the following quality components: 100 parts of high-impact polystyrene, 1-3 parts of colorant, 5-20 parts of oil, 5-30 parts of talcum powder, 0.1-2 parts of antioxidant, lubricating 0.1~2 doses. It is characterized in that the polystyrene material is recycled polystyrene. It is characterized in that the preparation method of the molecular chain repairing agent is: under the condition of 0-10°C, 0.1-1 part of dibenzoyl peroxide, 0.1-0.5 part of dicumyl peroxide, 0...

Embodiment 1

[0023] (1) The formula of the core material: polystyrene 100kg, azodicarbonamide 1 kg, dioctyl phthalate 1 kg. Add the above raw materials into a high-speed mixer and mix for 10 minutes to obtain the core layer material mixture;

[0024] (2) Formula of the surface material: 10 kg of high-impact polystyrene, 0.1 kg of colorant, 0.5 kg of dioctyl phthalate, 1.5 kg of talc, tetrakis [β-(3′,5′-ditert-tert Butyl-4′-hydroxyphenyl) propionate] pentaerythritol ester 0.01 kg, oxidized polyethylene wax 0.05 kg. Add the above raw materials into a high-speed mixer and mix for 10 minutes to obtain the surface layer material mixture;

[0025] (3) Put 3 kg of glass fiber into the mixer, stir and mix at a high speed for 15 minutes at 60°C, gradually add 0.09 kg of vinyltrimethoxysilane during the stirring process, and set aside;

[0026] (4) Adjust the temperature of each zone of the main extruder to the first zone: 138°C, the second zone 160°C, the third zone 195°C: 195°C, the fourth zone ...

Embodiment 2

[0030] (1) The formula of the core material: polystyrene 100 kg, azodicarbonamide 3 kg, dibutyl phthalate 3 kg. Add the above raw materials into a high-speed mixer and mix for 10 minutes to obtain the core layer material mixture;

[0031] (2) The formula of the surface layer material: 10 kg of high impact polystyrene, 0.2 kg of colorant, 1 kg of dibutyl phthalate, 1 kg of talc, ethylene glycol bis-3-(3-tert-butyl-4 -Hydroxy-5-methylphenyl) propionate 0.02 kg, sodium stearate 0.1 kg. Add the above raw materials into a high-speed mixer and mix for 10 minutes to obtain the surface layer material mixture;

[0032] (3) Put 4 kg of glass fiber into the mixer, stir and mix at a high speed for 15 minutes at 60°C, gradually add 0.12 kg of n-butyl titanate during the stirring process, and set aside;

[0033] (4) Adjust the temperature of each zone of the main extruder to the first zone: 138°C, the second zone 160°C, the third zone 195°C: 195°C, the fourth zone 124°C, the fifth zone 12...

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Abstract

The invention aims to provide a glass fiber reinforced polystyrene micro-foam double-layer co-extrusion section. The core layer of the section contains 3-8% of a uniform-distribution glass fiber (by polystyrene) having a length-diameter ratio of 10-20. The surface of the core layer is coated with a layer of high-impact-resistance polystyrene, and the mass fraction ratio of the material of the core layer to the material of the surface layer is 100:5-25. The density of the section reaches 0.40g / cm<3>, so the tensile strength and the charpy impact strength of the section can reach 12MPa and 4.5kJ / m<2> respectively, and are 31% and 23% higher than that of a same micro-foam material not added with the glass fiber respectively. In the invention, a polystyrene raw material is substantially saved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a glass fiber-reinforced polystyrene micro-foaming double-layer co-extruded profile and a manufacturing method thereof. Background technique [0002] Polystyrene micro-foamed wood-like profiles have a series of advantages such as light weight, low price, insect resistance, moth resistance, moisture resistance, non-toxic environmental protection, and long service life. Widely used in photo frames, picture frames, home decoration materials and other places. However, because polystyrene has undergone a micro-foaming process, the density is usually 0.5g / cm 3 Or so, no matter how low the density is, the mechanical properties of the profile will decrease significantly, and the performance index of the product will not be reached. In order to overcome this shortcoming, reduce the use of raw materials, and reduce production costs, the present invention adopts the method of adding glass fiber to the core layer to Improve the mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/18B32B27/30C08L25/06C08L51/00C08K7/14C08K3/34B29C47/06B29C47/92B29C48/40B29C48/625B29C48/92
CPCB29B7/7461B29B7/7466B29B7/7485B29B7/90B29C48/92B29C2948/92704B29C48/625B29C2948/9259B29C2948/92885B29C2948/92895B29C48/40
Inventor 李志杰丁友江罗京科刘方毅
Owner SHANGHAI INTCO INDUSTRIES CO LTD
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