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PMMA prepolymer and its preparation method and application

A prepolymer and monomer technology, applied in the coating and other directions, can solve the problems of short storage period, difficult polymerization reaction, single material properties of PMMA prepolymer, etc., and achieve the effect of short hardening time and excellent performance.

Active Publication Date: 2017-07-04
北京华腾东光科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of PMMA prepolymer materials in the existing prepolymer technology for acrylic plates, such as single properties, short storage period, and polymerization reaction at room temperature, especially low temperature, the present invention provides a PMMA prepolymer and its preparation method and application

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  • PMMA prepolymer and its preparation method and application
  • PMMA prepolymer and its preparation method and application
  • PMMA prepolymer and its preparation method and application

Examples

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Effect test

Embodiment 1

[0034] A kind of PMMA prepolymer is prepared from the following components by weight:

[0035]

[0036] The preparation method of above-mentioned PMMA prepolymer comprises:

[0037] Step 1: Add 32.5 parts of methyl methacrylate and 127.5 parts of diluent in sequence in the reactor, stir and mix evenly;

[0038] Step 2: Add the remaining methyl methacrylate, the remaining diluent, and the initiator in sequence in the monomer dropping tank, and stir and mix evenly;

[0039] Step 3: Raise the temperature of the material in the reactor and control it at 95°C. Under stirring, add the monomer material in the monomer dropping tank to the reactor dropwise. The monomer dropping time is 4 hours, and the reaction temperature is 95°C;

[0040] Step 4: After the dropwise addition is completed, heat-insulate the materials in the reactor: keep the temperature of the materials in the reactor for 1 hour under stirring;

[0041] Step 5: Add paraffin wax and tertiary amine accelerator to s...

Embodiment 2

[0043] A kind of PMMA prepolymer is prepared from the following components by weight:

[0044]

[0045]

[0046] The preparation method of above-mentioned PMMA prepolymer comprises:

[0047] Step 1: Add 25% methyl methacrylate and 85% diluent in sequence in the reactor, stir and mix evenly;

[0048] Step 2: Add the remaining methyl methacrylate, the remaining diluent, and the initiator in sequence in the monomer dropping tank, and stir and mix evenly;

[0049] Step 3: Raise the temperature of the material in the reactor and control it at 100°C. Under stirring, add the monomer material in the monomer dropping tank to the reactor dropwise, and the monomer dropping time is 5 hours;

[0050] Step 4: After the dropwise addition is completed, heat-insulate the materials in the reactor: keep the temperature of the materials in the reactor for 1 hour under stirring;

[0051] Step 5: Add paraffin wax and tertiary amine accelerator to step 4, mix well, and pack after passing the...

Embodiment 3

[0053] A kind of PMMA prepolymer is prepared from the following components by weight:

[0054]

[0055] The preparation method of above-mentioned PMMA prepolymer comprises:

[0056] Step 1: Add 35% methyl methacrylate and 90% diluent in sequence in the reactor, stir and mix evenly;

[0057] Step 2: Add the remaining methyl methacrylate, the remaining diluent, and the initiator in sequence in the monomer dropping tank, and stir and mix evenly;

[0058] Step 3: Raise the temperature of the material in the reactor and control it at 105°C. Under stirring, add the monomer material in the monomer dropping tank to the reactor dropwise, and the monomer dropping time is 4 hours;

[0059] Step 4: After the dropwise addition is completed, heat-insulate the materials in the reactor: keep the temperature of the materials in the reactor for 1 hour under stirring;

[0060] Step 5: Add paraffin wax and tertiary amine accelerator to step 4, mix well, and pack after passing the analysis. ...

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Abstract

The invention discloses a PMMA prepolymer and its preparation method and application and belongs to the field of material synthesis. The PMMA prepolymer is prepared from 130 to 180 parts by weight of methyl methacrylate, 150 to 200 parts by weight of a diluent, 0.05 to 0.2 parts by weight of an initiator, 0.1 to 0.8 parts by weight of paraffin, and 0.1 to 0.8 parts by weight of a tertiary amine accelerator. The invention provides the PMMA prepolymer and its preparation method and application. The prepared PMMA prepolymer material can be stably stored for one year or more at a normal temperature in a dark place. In the temperature range of -35 to 35 DEG C, the PMMA prepolymer has short hardening time and excellent performances and can be used in fields of polymer concrete, concrete structure gap fillers, bridge water resistance, color pavement and anti-corrosion concrete floors.

Description

technical field [0001] The invention relates to the field of prepolymer material synthesis, in particular to a PMMA prepolymer and its preparation method and application. Background technique [0002] At present, the domestic production of PMMA prepolymer is mainly used for the production of plexiglass (commonly known as acrylic sheet). The production process of acrylic sheet is divided into two steps. First, PMMA prepolymer is synthesized, and then the prepolymer is The polymer is mixed with subsequent initiators within a specified time and poured into a predetermined mold for final molding. If the pouring process is not carried out in time, the PMMA prepolymer will self-aggregate and cause losses. At the same time, since PMMA prepolymer is mainly used in the production of acrylic sheets, the raw material formula of the product is basically fixed, and the product performance cannot be changed. [0003] PMMA prepolymer is based on MMA, BA, 2-EHA and other monomers as the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C09D133/12C09D133/08
CPCC08F220/14C08F220/18C08F220/1804C09D133/08C09D133/12C08F220/1808C08F220/06
Inventor 杜振勇郝迎军胡丽梅何阳
Owner 北京华腾东光科技发展有限公司
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