PMMA/ASA alloy material for PVC profile coextrusion surface layer and preparation thereof

A technology of alloy material and ASA resin, which is applied in the field of PMMA/ASA alloy material and its preparation, can solve the problems of insufficient surface hardness, scratch resistance, poor friction resistance and wear resistance, etc., and achieve high gloss, High weather resistance, high rigidity effect

Inactive Publication Date: 2011-12-21
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of ASA is that the surface hardness is not enough, and the scratch resistance, friction resistance and wear resistance are not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] PMMA (MFR: 10g / 10min) / ASA (MFR: 13g / 10min) with a mass ratio of 40 / 60 was placed in a blast drying oven at 90 degrees for 4 hours, and then it was mixed with 0.5% mass fraction of dioxin After the oxazoline is initially mixed, it is added to the twin-screw extruder for mixing, extruding, and pelletizing. The temperature of the barrel is controlled at 190-220°C, and the vacuum device is kept open.

[0027] The alloy material prepared above was tested for mechanical properties: tensile strength 52.8MPa, bending strength 73.7MPa, notched impact strength 4.47KJ / m 2 , the wear amount per unit area is 139.88g / m 2 , friction factor 0.367.

Embodiment 2

[0029] PMMA (MFR: 10g / 10min) / ASA (MFR: 25g / 10min) with a mass ratio of 40 / 60 was placed in a blast drying oven at 90 degrees for 4 hours, and then it was mixed with 0.5% massfraction of dioxazole After initial mixing, put the morphine into the twin-screw extruder to mix, extrude and pelletize. The temperature of the barrel is controlled at 190-220°C, and the vacuum device is kept open.

[0030] The alloy material prepared above was tested for mechanical properties: tensile strength 49.4MPa, bending strength 69.3MPa, notched impact strength 5.07KJ / m 2 , the wear amount per unit area is 144.13g / m 2 , friction factor 0.353.

Embodiment 3

[0032] PMMA (MFR: 10g / 10min) / ASA (MFR: 25g / 10min) with a mass ratio of 40 / 60 was placed in a blast drying oven at 90 degrees for 4 hours, and then it was mixed with 0.5% massfraction of dioxazole Add morphine and 1% mass fraction of α-phase nano-alumina into a twin-screw extruder to mix, extrude, and pelletize. The temperature of the barrel is controlled at 190-220° C., and the vacuum device is kept open.

[0033] The alloy material prepared above was tested by mechanical properties: tensile strength 53.3MPa, bending strength 75.0MPa, notched impact strength 5.56KJ / m 2 , the wear amount per unit area is 116.98g / m 2 , friction factor 0.340.

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Abstract

The invention discloses a PMMA / ASA alloy material for a PVC profile coextrusion surface layer and preparation thereof. The PMMA / ASA alloy material is prepared from the following raw materials in percentage by ,mass: 0.5 to 3 percent of chain extender, 0 to 5 percent of inorganic nano particle, coupling agent accounting for 0 to 3 percent of the mass of the inorganic nano particle, and the balanceof PMMA resin and ASA resin, wherein the mass ratio of the PMMA resin to the ASA resin is 1:0.25-4; the PMMA resin is polymethylmethacrylate resin; the ASA resin is acrylonitrile-styrene-acrylate grafted copolymer; and the chain extender contains groups which can react with the carboxyl. The PMMA / ASA alloy material has excellent performance such as high intensity, high toughness, high glossiness,friction and abrasion resistance, and the like.

Description

(1) Technical field [0001] The invention relates to a polymer alloy material with excellent comprehensive properties, in particular to a PMMA / ASA alloy material used for the co-extruded surface layer of PVC profiles and a preparation method thereof. (2) Background technology [0002] In recent years, PVC plastic doors and windows have been widely popularized and applied in China because of their light weight, corrosion resistance, high strength, heat preservation, sealing and sound insulation, energy saving and environmental protection, easy processing and low cost. Due to the relatively unstable α-Cl in the molecular structure of PVC, the weather resistance of pure PVC processed materials is poor, and it is easily damaged by ultraviolet rays in the sun outdoors, causing yellowing and redness and other discoloration phenomena. [0003] In order to improve this phenomenon of PVC, the method commonly used at present is to co-extrude a layer of resin with excellent weather resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08L51/00C08K5/353C08K5/1539C08K9/00C08K3/22
Inventor 王旭牛建华唐国栋陈思
Owner ZHEJIANG UNIV OF TECH
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