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Acrylic artificial stone and method for preparing same

An acrylic and artificial stone technology, applied in the field of acrylic artificial stone and its preparation, can solve the problems of poor surface effect, slow molding time, complicated preparation process of thickener, etc., and achieve excellent molding processability and molding processability. The effect of excellent, excellent appearance and performance

Inactive Publication Date: 2009-11-04
上海新天和树脂有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the low boiling point of acrylic resin limits its application
[0003] Japanese patent JP-B4-58423 has obtained acrylic artificial stone with excellent heat resistance and flexibility, but its molding time is very slow, the survival efficiency is low, and the surface effect is not good
[0004] Japanese patents JP-A5-32720, IP-A6-298883, JP-A6-313019, etc. have obtained acrylic artificial stone with excellent performance and appearance, but the preparation process of the thickener is very complicated, and the equipment investment is also large. thus affecting its industrialization process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 400 parts of polymethyl methacrylate (molecular weight: 100,000) and 1200 parts of methyl methacrylate into a stirred tank equipped with a heating device and a cooling device, and heat to dissolve to make thickener a.

Embodiment 2

[0036] Add 400 parts of polymethyl methacrylate (molecular weight: 300,000) and 1200 parts of methyl methacrylate into a stirred tank equipped with a heating device and a cooling device, heat and dissolve to obtain thickener b.

[0037] B. Preparation of acrylic artificial stone:

[0038] Example 1

[0039] Add 30 parts of methyl methacrylate, 10 parts of isobornyl methacrylate, 15 parts of neopentyl glycol dimethacrylate into the kneader as the acrylic resin monomer mixture, 25 parts of the thickener a prepared above , 320 parts of inorganic filler aluminum hydroxide, 0.8 parts of curing agent TBPB, knead the above raw materials for 10 minutes to obtain acrylic molding compound (group material BMC). The molding compound was placed in an oven at 60°C, and it was not sticky even immediately after kneading.

[0040] Then, the molding compound mass was filled into a 20 cm flat mold, and heated and cured for 6 minutes under a pressure of 15 MPa at a male mold temperature of 140°...

Embodiment 3

[0047] Add 20 parts of methyl methacrylate, 20 parts of isobornyl methacrylate, 30 parts of neopentyl glycol dimethacrylate into the kneader as acrylic resin monomer mixture, 15 parts of the above thickener b, 320 1 part of inorganic filler aluminum hydroxide, 0.9 part of curing agent TBPB, 30 parts of unsaturated resin particles, knead the above raw materials for 10 minutes to obtain acrylic molding compound (group material BMC). The molding compound is placed in an oven at 60°C, and it is not sticky even just after kneading, and its processability is excellent.

[0048] Then, the molding compound was filled into a 20 cm flat mold, and heated and cured at a male mold temperature of 140° C., a female mold temperature of 130° C. and a pressure of 15 MPa for 5 minutes to obtain an 8 mm thick granite-like Acrylic artificial stone. The surface of the artificial stone has an extremely high gloss without any defects.

[0049] The molding compound dough was not cured even after bei...

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PUM

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Abstract

The invention relates to an acrylic artificial stone with natural marble surface patterns and excellent hot water resistance and a method for preparing the same. The acrylic artificial stone comprises the following components by weight portion: 40 to 70 portions of acrylic-based resin monomer, 10 to 25 portions of thickening agent, 200 to 350 portions of inorganic filler, 0.01 to 2 portions of curing agent, and 0 to 30 portions of unsaturated resin, wherein the thickening agent is a hot melt mixture of acrylic polymers and the acrylic-based resin monomer, and the molecular weight of the acrylic polymers is between 100,000 and 400,000. The method for preparing the acrylic artificial stone comprises the following steps of: putting the unsaturated resin, the acrylic-based resin monomer, the thickening agent, the inorganic filler and the curing agent in a kneader according to a formula to obtain an acrylic molding compound; and filling the molding compound in a mold and curing the molding compound at a temperature of between 100 and 145 DEG C and under a pressure of between 10 and 20MPa to prepare the acrylic artificial stone. The prepared acrylic artificial stone has excellent appearance and performance.

Description

technical field [0001] The invention relates to an acrylic artificial stone with natural marble surface patterns and excellent hot water resistance and a preparation method thereof. Background technique [0002] Molded acrylic artificial stone is prepared by mixing inorganic fillers such as aluminum hydroxide into acrylic resin, this acrylic artificial stone has various excellent functions and properties such as excellent appearance, soft touch, weather resistance and molded products. Other properties, and widely used in countertops such as kitchen counters, laundry and dressing table, waterproof surface and other construction purposes. But the low boiling point of acrylic resin limits its application. [0003] Japanese patent JP-B4-58423 has obtained acrylic artificial stone with excellent heat resistance and flexibility, but its molding time is very slow, the survival efficiency is low, and the surface effect is not good. [0004] Japanese patents JP-A5-32720, IP-A6-2988...

Claims

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Application Information

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IPC IPC(8): C04B26/02
CPCC04B2111/27C04B2111/545C04B2111/00137C04B26/06
Inventor 林定多马勇常鹏
Owner 上海新天和树脂有限公司
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