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Process for preparing high shock-resistance polyacrylic ester composite particle grafted vinyl chloride emulsion resin

A polyacrylate and composite particle technology, which is applied in the field of preparation of high-impact polyacrylate composite particles grafted with vinyl chloride emulsion resin, can solve the problem of poor macromolecular chain fluidity, poor weather resistance of polyvinyl chloride, and low notch impact strength. And other issues

Inactive Publication Date: 2004-12-22
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a graft copolymerization modification method, thereby solving the inhomogeneity of macroscopic mixing in the blending modification; pure graft polymer macromolecular chain fluidity is poor, and the modulus of the prepared material is low; Polyvinyl chloride has poor weather resistance and low notched impact strength; the yellow index of CPE-g-VC resin changes significantly during processing; separation of modifiers, treatment of salty wastewater requires increased workload and equipment investment, and causes environmental pollution and other problems

Method used

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  • Process for preparing high shock-resistance polyacrylic ester composite particle grafted vinyl chloride emulsion resin
  • Process for preparing high shock-resistance polyacrylic ester composite particle grafted vinyl chloride emulsion resin
  • Process for preparing high shock-resistance polyacrylic ester composite particle grafted vinyl chloride emulsion resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] (1) Preparation of polyacrylate (ACR) composite latex

[0076] Add 100ml deionized water, 0.20g sodium lauryl sulfate, 0.05g potassium persulfate (K 2 S 2 o 8 ) and seed comonomer mixture [2.86g butyl acrylate (BA), 1.54g 2-ethylhexyl acrylate (EHA), 0.066g 1,4-butanediol diacrylate (BDDA)], at room temperature Stir and blow nitrogen to make it fully emulsified. Then, add 0.15g sodium borate (Na 2 BO 4 10H 2 O) adjust the pH between 8 and 9. Start the water bath to heat up, and feed the cooling water to the reflux condenser at the same time.

[0077] When the reaction started, the system exothermicly increased in temperature. When the temperature of the reaction liquid was constant to 75°C, the reaction was kept for 1 hour. Then add 0.08g SDS and 0.10g K 2 S 2 o 8 At the same time, the mixed liquid of the core layer monomer (11.44gBA, 6.16g EHA, 0.264g BDDA) was added dropwise. After the dropwise addition of the core layer monomer mixture was completed, 0.1...

Embodiment 2

[0092] Embodiment 2: in composite latex (1) preparation process, do not add Al 2 (SO 4 ) 3 Agglomerating agent, all the other prescriptions and operation are with embodiment 1.

Embodiment 3

[0094] (1) Preparation of polyacrylate (ACR) composite latex

[0095] The seed of ACR composite latex and core layer composition are the same as embodiment 1, and shell layer composition is the mixed solution of 5.26g styrene (St), 9.74g MMA and 0.226g BDDA monomer. During the synthesis process, 0.12 g of SDS was added after the dropwise addition of the core layer monomer mixture. After continuing the insulation reaction for 2 hours, add 0.08g K 2 S 2 o 8 (No agglomeration agent was added before), start to add the shell layer monomer dropwise, and refer to Example 1 for the rest of the operations.

[0096] (2) Synthesis of ACR-g-VC emulsion resin

[0097] Adopt the composite latex prepared in the present embodiment (1) in this step synthesis, add the composite particle latex (according to the solid content calculation in the composite latex (1) of this example) of about 24g of solid content, operation procedure is the same as embodiment 1 (2). attached figure 2 It is a...

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Abstract

The present invention adopts acrylic ester monomer as main raw material, utilizes the processes of seed emulsion polymerization by adopting semi-continuous changing mode, agglomeration or organic agglomerating agent and addition of nano-grade inorganic particles to obtain composite particle latex; in the pressure of the above-mentioned latex it is grafted with polyethylene to obtain the invented composite polyvinyl chloride emulsion resin with high notch impact strength, weatherability and good low-temp. impact property at normal temp. It can be extensively used in the fields of indoor decoration material, electric equipmkent and meter, tog and others.

Description

Technical field: [0001] The invention belongs to a method for manufacturing high-impact composite polyvinyl chloride resin, in particular to a method for preparing high-impact polyacrylate composite particles grafted with vinyl chloride emulsion resin. technical background: [0002] Polyvinyl chloride (PVC) resin is widely used due to its excellent mechanical properties, chemical corrosion resistance, and electrical insulation. It is one of the most widely used plastic varieties in the world. At present, emulsion PVC resin has been widely used in construction, interior decoration materials, electrical instruments, toys, stationery, daily necessities and other industries. However, due to the shortcomings of PVC resin itself, such as sensitivity to notches, low impact strength, and poor weather resistance, its application in certain fields is greatly limited. In order to overcome the above-mentioned shortcomings, various modification methods have been adopted. [0003] The m...

Claims

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Application Information

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IPC IPC(8): C08F265/06
Inventor 潘明旺张留成
Owner HEBEI UNIV OF TECH
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