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Melt enhancer with functional groups, preparation and application
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A melt enhancer and functional group technology, used in the field of resin modified melt enhancer and melt enhancer, to achieve the effect of balanced polymer molecular weight and easy reaction control
Active Publication Date: 2016-06-08
山西科灜科技有限公司
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Melt enhancers with both high molecular weight and functional groups have not been reported
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Embodiment 1
[0055] Preparation method with functional group melt enhancer:
[0056] Step 1: Pre-emulsification of mixed monomers
[0057] The formulation of the pre-emulsion:
[0058] Ingredient mass parts
[0059] Deionized water 100
[0060] Sodium Lauryl Sulfate 1.0
[0061] Pre-emulsified monomer:
[0062] Methyl methacrylate 70
[0063] Butyl methacrylate 15
[0064] Glycidyl methacrylate 5
[0065] Butyl Acrylate 10
[0066] Preparation of the pre-emulsion: Add the above-mentioned specified mass parts of deionized water and sodium lauryl sulfate into a 500ml beaker, mix and stir for 20min. Then add the above-mentioned specified mass parts of methyl methacrylate, butyl methacrylate, butyl acrylate and glycidyl methacrylate monomers into the beaker, and mix and stir for 20 minutes. Fully emulsify evenly to obtain a pre-emulsion of mixed monomers, ready for use.
[0067] Step 2: Emulsion polymerization of pre-emulsified mixed monomers
[0068] Recipe for emulsion polymerizat...
Embodiment 2
[0077] Embodiment 2 is the same as embodiment 1, but the consumption of ammonium persulfate is 0.03 mass parts, the consumption of sodium bisulfite is 0.015 mass parts, obtains weight average molecular weight 2,840,000 grams / mole, and molecular weight distribution is 1.80, and the melt with functional group body enhancer.
Embodiment 3
[0078] Embodiment 3 is the same as Example 1, except that the consumption of ammonium persulfate is 0.05 parts by mass, and the consumption of sodium bisulfite is 0.025 parts by mass, to obtain a weight average molecular weight of 2.31 million g / mol, a molecular weight distribution of 1.65, and a melt with functional groups. body enhancer.
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Abstract
The invention discloses a melt reinforcing agent with functional groups. The reinforcing agent has epoxy functional groups. The raw material formula mainly includes a certain mass fraction of alkyl methacrylate monomers, alkyl acrylate monomers, Acrylic ester monomers with functional groups, which can also contain styrene monomers, are obtained by pre-emulsification and copolymerization under the action of an appropriate amount of surfactants, initiators, and reducing agents; the weight-average molecular weight range is: 2 million-4 million g / mol, molecular weight distribution less than 2.0. The invention also discloses the preparation method and application of the melt enhancer. The present invention has the following beneficial effects: the melt enhancer with functional groups of the present invention has epoxy functional groups, ultra-high molecular weight, and narrow molecular weight distribution, the reaction is easy to control and the molecular weight of the polymer is balanced, and the melt enhancer of the present invention is compatible with biodegradation The mixing of base plastics plays a very good role in improving the melting performance of biodegradable base plastics.
Description
technical field [0001] The invention relates to a melt enhancer with functional groups, its preparation and application, and belongs to the field of resin modified melt enhancers. Background technique [0002] In the 21st century, many countries regard the construction of a sustainable resource recycling society as one of their national policies, and vigorously develop environmentally friendly bio-based and biodegradable plastics, which have flourished worldwide. Polylactic acid (PLA) is the only chemically synthesized biodegradable plastic made from biological resources and has become one of the most promising varieties. It has also become a global research and development hotspot. It will be applied to more fields in the next few years. Especially in consumer electronics and automotive fields, there is huge application potential. Bio-based and bio-degradable plastics have extremely low melt strength and insufficient strain hardening due to the lack of long chain branche...
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