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Preparation method of nano SiO2/ACR composite particles and application thereof

A composite particle and nano-technology, which is applied in the preparation and application of nano-SiO2/ACR composite particles, can solve the problems of high price, late start, small proportion, etc., and achieve good dispersion, mechanical properties, and excellent impact resistance. Effect

Inactive Publication Date: 2009-06-03
GUANGDONG JUHANG INST FOR ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In foreign countries, ACR has become the main impact modifier product, but in China, compared with other impact modifiers such as CPE (chlorinated polyethylene), ACR started late and the technology maturity is not high, and The price is relatively high, so ACR impact modifiers are still in the development stage, accounting for a small proportion of similar products, and there is still a lot of room for development

Method used

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  • Preparation method of nano SiO2/ACR composite particles and application thereof
  • Preparation method of nano SiO2/ACR composite particles and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Mechanical stirring and ultrasonic-assisted pre-emulsification reaction monomer: sodium dodecylbenzenesulfonate / alkylphenol polyoxyethylene ether (mass ratio is 70:30), the content of the compound emulsifier in the preparation of seed latex is monomer 1.5% of the mass, the amount of compound emulsifier used in the preparation of the inner core is 0.4% of the mass of the monomer, and the amount of the compound emulsifier used in the preparation of the shell is 0.1% of the mass of the monomer;

[0022] (2) seed latex preparation: with ethyl acrylate as monomer, be 0.6% of all reaction monomer quality, potassium persulfate (KPS) initiator consumption is 0.3% of monomer quality;

[0023] (3) Inner core preparation: the monomer mass ratio of butyl methacrylate: ethyl acrylate is 80:20, and the amount of composite crosslinking agent is 0.08% of the monomer mass, among which, N,N'-methylenebisacrylamide :CH 2 =CHRCH 2 COOR'(R is n-C 10 h 21 , R' is -CH 3 ) mass ratio ...

Embodiment 2

[0028] (1) The mass ratio of the compound emulsifier sodium alkylnaphthalene sulfonate / Span 60 is 80:20, the content of the compound emulsifier in the preparation of the seed latex is 1.0% of the monomer mass, and the amount of the compound emulsifier in the preparation of the kernel is the monomer mass 0.5% of the compound emulsifier used in shell preparation is 0.06% of the monomer mass;

[0029] (2) ethyl acrylate monomer is 0.5% of all reaction monomer quality, and potassium persulfate (KPS) is 0.3% of monomer quality as initiator consumption;

[0030] (3) The monomer mass ratio of butyl methacrylate: ethyl acrylate is 70:30, and the amount of composite crosslinking agent is 0.06% of the monomer mass, wherein, N, N'-methylenebisacrylamide: CH 2 =CHRCH 2 COOR'(R is n-C 8 h 17 , R' is n-C 4 h 9 ) mass ratio is 80:20, potassium persulfate (KPS) initiator consumption is 0.2% of monomer mass;

[0031] (4) The siloxane coupling agent is ethylenediaminopropyltrimethoxysilan...

Embodiment 3

[0035] (1) The mass ratio of the compound emulsifier sodium dodecylbenzenesulfonate / fatty alcohol polyoxyethylene ether is 60:40, the content of the compound emulsifier in the preparation of the seed latex is 1.3% of the monomer mass, and the compound emulsifier in the preparation of the kernel The dosage is 0.3% of the mass of the monomer, and the dosage of the composite emulsifier in the preparation of the shell is 0.05% of the mass of the monomer;

[0036] (2) ethyl acrylate monomer is 0.8% of all reaction monomer quality, and potassium persulfate (KPS) is 0.4% of monomer quality as initiator consumption;

[0037] (3) The monomer mass ratio of butyl methacrylate: ethyl acrylate is 90:10, and the amount of composite crosslinking agent is 0.05% of the monomer mass, wherein, N, N'-methylenebisacrylamide: CH 2 =CHRCH 2 COOR'(R is n-C 12 h 25 , R' is n-C 2 h 5 ) mass ratio is 70:30, potassium persulfate (KPS) initiator consumption is 0.16% of monomer mass;

[0038] (4) The...

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Abstract

The invention discloses a preparation method of nano SiO2 / ACR composite particles and application thereof. The method comprises the following steps: adopting ultrasonic to assisting in pre-emulsifying a monomer, and taking an anionic / nonionic compound emulsifier as the emulsifier; taking ethyl acrylate as the monomer to prepare seed latex; taking butyl methacrylate and the ethyl acrylate as the monomers and a compound crossinking agent consisting of N,N'-methylene bisacrylamide (BIS) and a compound CH2=CHRCH2COOR' to prepare an inner core; taking the methyl methacrylate and the butyl methacrylate as the monomers and the compound crosslinking agent consists of the BIS and the CH2=CHRCH2COOR' to prepare a shell; adding nano SiO2 emulsion which is modified by soft water and a siloxane coupling agent while preparing the shell so that SiO2 produces a grafting reaction at the shell of core-shell polyacrylate (ACR); and finally obtaining the nano SiO2 / ACR composite particles with excellent impact resistance and the like. The prepared composite particles are applied to preparing PVC as an impact modifier, and have excellent impact resistance, good dispersivity and good mechanical properties.

Description

technical field [0001] The present invention relates to a kind of nano SiO 2 Preparation method of / ACR composite particle and its application in PVC plastic modification. Background technique [0002] Polyvinyl chloride (PVC) plastic has the advantages of high strength and light weight, and is widely used in construction, decoration, home appliances, toys and other industries. On the other hand, due to the impact resistance, thermal stability, weather resistance and other properties of PVC often cannot meet the needs, it is necessary to add impact modifiers, heat stabilizers, antioxidants and other additives when processed into products. Core-shell structure polyacrylate (ACR) is a core-shell copolymer with a low glass transition temperature core and a high glass transition temperature shell obtained by emulsion polymerization of monomers such as polyacrylate and polystyrene. Impact resistance, weather resistance, promotion of plasticization and other properties are widel...

Claims

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Application Information

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IPC IPC(8): C08L33/04C08K9/06C08F220/12C08F2/24C08L27/06
Inventor 易国斌康正张宏辉陈伟瑜
Owner GUANGDONG JUHANG INST FOR ADVANCED MATERIALS CO LTD
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