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Asphalt modified polymethyl methacrylate plastic and preparation method thereof

A technology of polymethyl methacrylate and methyl methacrylate, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems of plate thickness limitation, incapable of large-scale production, and high cost, and achieve stable combustion performance, Low cost, enhanced toughness effect

Active Publication Date: 2014-10-15
NO 53 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyvinyl chloride, SiO 2 、TiO 2 , carbon black, etc., are melt-blended with polymethyl methacrylate, extruded and granulated, and then hot-molded by extrusion sheet production equipment. The disadvantage of this method is that the maximum thickness of the sheet produced is 10 mm, and the thickness of the sheet is limited. For Thicker plates need to be realized by vacuum hot molding, which is expensive and cannot be mass-produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An asphalt-modified polymethyl methacrylate plastic plate, 5mm×1000mm×1600mm.

[0032] Add 100g of sodium hydroxide to a 1000mL stainless steel container, heat to melt, add 100g of natural asphalt with a penetration of 5, stir to dissolve completely, cool down to 30°C, pour into 500mL of 90°C deionized water, stir and mix well, and let stand for 10min , separate the water layer, wash the asphalt three times with 80°C deionized water, separate the water layer until the water phase is neutral, heat the asphalt to boiling, keep boiling for 1 hour, remove the water in the asphalt to obtain refined asphalt.

[0033] Remove the polymerization inhibitor of methyl methacrylate monomer by conventional method, dry with calcium chloride.

[0034] The total amount of material is 9kg. Take 100 parts of methyl methacrylate and put it into a 50L reaction tank, heat it in a water bath to 85°C, add 0.1 part of refined asphalt, stir to completely dissolve the asphalt and mix evenly, add...

Embodiment 2

[0037] An asphalt-modified polymethyl methacrylate plastic plate, 8mm×1200mm×1800mm.

[0038] Add 360g of sodium hydroxide into a 5000mL stainless steel container, heat to melt, add 300g of petroleum pitch with a penetration of 50, stir to dissolve completely, cool down to 40°C, pour into 1440mL of 92°C deionized water, stir well, let it stand for 10min, and divide Remove the water layer, wash the asphalt with deionized water at 85°C to neutral, heat the asphalt to boiling, keep boiling for 2 hours, and remove the water in the asphalt to obtain refined asphalt.

[0039] Remove the polymerization inhibitor of methyl methacrylate monomer by conventional method, dry with calcium chloride.

[0040] The total amount of material is 20kg. Put 100 parts of methyl methacrylate into a 50L reaction tank, heat it in a water bath to 87°C, add 1.5 parts of refined petroleum pitch, stir to completely dissolve the pitch, add 0.3 parts of azobisisobutyronitrile prepolymerization under stirrin...

Embodiment 3

[0043] An asphalt-modified polymethyl methacrylate plastic sheet, 10mm×1200mm×1800mm.

[0044] Add 700g of sodium hydroxide to a 5000mL stainless steel container, heat to melt, add 500g of natural asphalt with a penetration of 100, stir to dissolve completely, cool down to 45°C, pour into 2450mL of 98°C deionized water, stir well, let stand for 10min, separate In the water layer, wash the asphalt with deionized water at 87°C until neutral, heat the asphalt to boiling, keep boiling for 2 hours, and remove the water in the asphalt to obtain refined asphalt.

[0045] The polymerization inhibitor of the methyl methacrylate monomer was removed according to the conventional method, and the calcium chloride was dried for subsequent use.

[0046]The total amount of material is 25kg. Put 100 parts of methyl methacrylate into a 50L reaction tank, heat it in a water bath to 85°C, add 5 parts of refined natural asphalt, stir to completely dissolve the asphalt, add 0.5 parts of benzoyl pe...

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Abstract

Belonging to the technical field of high polymer materials, the invention relates to an asphalt modified polymethyl methacrylate plastic and a preparation method thereof. Methyl methacrylate is adopted as the main body, and asphalt is added as a modification additive, while improving the toughness of an organic glass main body, the material is endowed with stable combustion performance. The asphalt modified polymethyl methacrylate plastic involved in the invention is formed by bulk polymerization, the raw materials at least include: 100 parts by mass of methyl methacrylate, 0.1-12 parts by mass of refined asphalt, and 0.2-1.2 parts by mass of an initiator. The preparation method of the asphalt modified polymethyl methacrylate plastic involved in the invention consists of the processes of asphalt pretreatment, methyl methacrylate monomer pretreatment, bulk polymerization, forming and post-curing. The asphalt pretreatment adopts alkali fusion treatment. The asphalt modified polymethyl methacrylate plastic involved in the invention has enhanced toughness and stable combustion performance, is applicable to building doors and windows, building decorative plates, signboards, electrical machinery parts and the like, and is especially applicable to standard substances for laboratory cone calorimeters.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to thermoplastic polymers and preparation techniques, in particular to polymethyl methacrylate plastics and preparation techniques. Background technique [0002] Polymethyl methacrylate, commonly known as plexiglass, is widely used in construction, electrical appliances, transportation and other industries. The mechanical properties of polymethyl methacrylate are similar to those of glass, and its brittleness is large. Improving the toughness and impact resistance of plexiglass can expand its application field. [0003] At present, plastic resin is usually mixed into polymethacrylic resin to improve the toughness of the material. Using acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyvinyl chloride, SiO 2 、TiO 2 , carbon black, etc., are melt-blended with polymethyl methacrylate, extruded and granulated, and then hot-molded by extrusion shee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L95/00C08F120/14C08F2/02
Inventor 刘运传王康郑会保孟祥艳周燕萍王雪蓉段剑李峙澂
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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