Acrylate processing aid as well as preparation method and application thereof
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A technology of acrylates and processing aids, applied in the chemical industry, can solve the problems of low strength and high toughness, poor surface finish, poor dimensional stability, etc. , Good plasticizing effect and moderate reaction speed
Active Publication Date: 2013-11-27
SHANDONG RUIFENG CHEM
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[0003] Although many manufacturers have carried out extrusion production of polyvinyl chloride foam boards in recent years, none of them have solved the problem of low production cost, high strength and good toughness of polyvinyl chloride foam boards, especially foam boards suitable for cabinet products. Contradictions, most of them have various problems such as poor dimensional stability, brittle boards, and poor surface finish. Therefore, the production of a low-cost, high-quality PVC foam board is the goal that people are pursuing.
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Embodiment 1
[0039] 1. Preparation of acrylate processing aids
[0040] At room temperature, put the emulsifier aqueous solution containing 4g sodium lauryl sulfate and 0.8g co-emulsifier OP-10 into a three-necked flask equipped with a mechanical stirrer, and then mix the solution with 1.5g potassium persulfate The monomer (180g methyl methacrylate and 120g butyl acrylate) was added into the emulsifier aqueous solution through the addition funnel under stirring, and the phase separation did not occur by controlling the stirring speed and the dropping speed of the monomer, and the dropping time lasted about 10 to 15 minutes, pass N 2 , The three-necked flask was placed in a constant temperature water bath, and the reaction was carried out at 25°C. After reacting for 2 hours, raise the temperature to 45°C, fully react for 20 minutes, then pour the reaction product into a large beaker, add 15% magnesium sulfate solution for salting out, put it in an oven at 50°C and dry it to obtain a unifor...
Embodiment 2
[0048] The conditions and proportions of synthetic acrylic processing aids were changed, as shown in Table 2; the formula for producing polyvinyl chloride foamed boards was changed, as shown in Table 2, and others were the same as in Example 1.
Embodiment 3
[0050] The conditions and proportions of synthetic acrylic processing aids were changed, as shown in Table 2; the formula for producing polyvinyl chloride foamed boards was changed, as shown in Table 2, and others were the same as in Example 1.
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Abstract
The invention belongs to the field of chemical engineering and particularly relates to an acrylate processing aid as well as a preparation method and an application thereof in production of polyvinyl chloride foam boards. Calculated by taking the total weight of polymerization monomers as 100%, the acrylate processing aid is formed by polymerization reaction of 58-79% of methyl methacrylate and 39-18% of butyl acrylate via emulsion; a surfactant adopts a mixture of sodium dodecyl sulfate and OP-10 at the weight ratio of 5:1, the using quantity of the surfactant accounts for 0.5%-3% of the total weight, an initiator adopts potassium persulfate, and the using quality of the initiator is 0.3-2% of the total weight of the processing aid. When the acrylate processing aid disclosed by the invention is used as a foam regulator for polyvinyl chloride, the viscosity can be up to 12-13; and an acrylate polymer is good in powder fluidity and can be used for preparing polyvinyl chloride foam board products with uniform foam holes.
Description
technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to an acrylic ester processing aid, a preparation method and its application in the production of polyvinyl chloride foam boards. Background technique [0002] PVC foam board is also known as Chevron board and Andy board, and its chemical composition is polyvinyl chloride. Widely used in passenger cars, train car ceilings, box core layers, interior decoration panels, building exterior wall panels, interior decoration panels, offices, residences, public building compartments, commercial decorative frames, and clean room panels , Ceiling panels, screen printing, computer lettering, advertising signs, display panels, sign boards, album panels and other industries, as well as chemical anti-corrosion engineering, thermoforming parts, cold storage panels, special cold insulation projects, environmental protection templates, sports equipment, and breeding materials , seaside m...
Claims
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