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Method for preparing continuous bulk of flame retardant and highly impact resistant acrylonitrile-chlorinated polyethylene-styrene resin

A technology of chlorinated polyethylene and styrene resin, which is applied in the field of preparation of polymer chemical materials, can solve problems such as limitation, impact resistance limitation, and complicated process, so as to facilitate the control of the preparation process, reduce equipment costs, simplify The effect of the preparation process

Active Publication Date: 2010-03-10
ZHEJIANG OCEANKING DEVELOPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent document CN1587290A discloses a preparation method of acrylonitrile-chlorinated polyethylene-styrene resin aqueous phase graft copolymerization, but it adopts the aqueous phase process, the process is complicated, the water treatment capacity is large, the pollution is serious, and the impurity content of the product is low. high
Chinese patent document CN101058621A discloses a preparation method of continuous bulk graft copolymerization of acrylonitrile-chlorinated polyethylene-styrene resin, but the process of this method is relatively complicated, the equipment investment is large, and the prepared resin needs to be modified to a certain extent The method can meet the requirements of flame retardant grade, and it is easy to change color at high temperature during the preparation process
The acrylonitrile-chlorinated polyethylene-styrene resin prepared by Chinese patent document CN101058621A is suitable for use as a general general-purpose engineering plastic due to the limitation of its impact resistance. Higher application areas are more limited

Method used

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  • Method for preparing continuous bulk of flame retardant and highly impact resistant acrylonitrile-chlorinated polyethylene-styrene resin
  • Method for preparing continuous bulk of flame retardant and highly impact resistant acrylonitrile-chlorinated polyethylene-styrene resin
  • Method for preparing continuous bulk of flame retardant and highly impact resistant acrylonitrile-chlorinated polyethylene-styrene resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In the nitrogen-purged sol tank, add ethylbenzene, styrene, acrylonitrile, Haijing CPE135, Yaxing CPE2135, 35AE rubber, tert-butyl peroctoate, and antioxidant 1076 according to the parts by weight in Table 1. , dodecyl mercaptan, and tris(2-chloroethyl) phosphate are dissolved and stirred. After the sol is completed, the raw material glue enters two tower reactors connected in series. Add ethylbenzene and tris(2-chloroethyl) phosphate into the second feed tank, stir well to dissolve. Add methyl tin mercaptide and ethylene bis stearamide into the additive feed tank, and stir well to mix.

[0051] According to the conditions in Table 1 and figure 1 The said technological process carries out continuous polymerization reaction, and the generated polymerization product undergoes steps such as devolatilization, extrusion, granulation, etc. to obtain resin product granules.

[0052] Table 1

[0053]

[0054] The obtained resin product is measured according to GB / T1843 fo...

Embodiment 2 and 3

[0059] In the nitrogen-purged sol tank, add ethylbenzene, styrene, acrylonitrile, Corley CPE135B, 35AE rubber, tert-butyl neodecanoate, antioxidant 1010, linear The dimer and triaryl phosphate are dissolved and stirred. After the sol is completed, the raw material glue enters two tower reactors connected in series. Add ethylbenzene and triaryl phosphate into the second feed tank, stir well to dissolve. Add dibutyltin laurate and polyethylene wax to the additive feed tank and stir well to mix.

[0060] The continuous polymerization reaction was carried out according to the conditions in Table 1, and the resulting polymerization product was subjected to steps such as devolatilization, extrusion, and granulation to obtain resin product granules. According to the same method as in Example 1, the results are shown in Table 2.

[0061] As can be seen from the measured data in Table 2, along with the gradual increase of the amount of butadiene rubber used in Examples 1, 2, and 3, t...

Embodiment 4

[0063] According to the steps in Example 1, various raw materials are added, wherein the chlorinated polyethylene rubber is Keli CM402, the butadiene rubber is SBR rubber, the initiator is tert-butyl perbenzoate, and the heat stabilizer is methyl mercaptan Base tin, all the other raw materials are identical with embodiment 1. The obtained resin product was measured according to the same method in Example 1, and the results are shown in Table 2.

[0064] As can be seen from the measured data in Table 2, due to the use of Corley CM402 with a chlorine weight percentage content of 42%, the resin product can still obtain the required flame retardant grade. In Example 4, we increased the amount of heat stabilizer used, and appropriately reduced the devolatilization temperature of the devolatilizer to ensure the thermal stability of the product.

[0065] In Example 4, we used SBR rubber. Due to the difference between butadiene rubbers, the physical and mechanical properties of the ...

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Abstract

A method for preparing a continuous bulk of a flame retardant and highly impact resistant acrylonitrile-chlorinated polyethylene-styrene resin comprises the following steps: dissolving chlorinated polyethylene rubbers, butadiene rubbers, flame retardants and auxiliaries into a mixture of mono alkyl ethylene aromatic monomers and unsaturated nitrile monomers to be involved in polymerization reaction as first feed solution, mixing the first feed solution with second feed, containing the same or different flame retardants, of mixed solution of aromatic hydrocarbon and with additive feed, containing heat stabilizers and lubricants, of the mixed solution of aromatic hydrocarbon, and then continuously carrying out polymerization reaction. The resin prepared by the method of the invention has high notch impact strength, high flame retardant rating, superior comprehensive performance and excellent antistatic performance and weather resistance. The volume resistivity can reach 2.0*10<12> and below, and the notch impact strength retention rate can reach 70% and above under the condition of artificial weathering for more than 1000h; therefore, the resin can be on a par with the ASA resins famous for weather resistance.

Description

technical field [0001] The invention relates to the field of preparation of polymer chemical materials, in particular to a continuous bulk preparation method of flame-retardant high-impact acrylonitrile-chlorinated polyethylene-styrene resin. Background technique [0002] Acrylonitrile-chlorinated polyethylene-styrene resin is a kind of thermoplastic resin grafted and polymerized by acrylonitrile, chlorinated polyethylene and styrene, which is to make up for the flame retardancy, weather resistance and antistatic properties of ABS resin A polymer material with excellent performance was born due to insufficient performance. According to its preparation method, acrylonitrile-chlorinated polyethylene-styrene resin can be divided into two categories: grafting type and mixed type, and the grafting type can be divided into bulk method and aqueous phase method according to the grafting method; According to its performance, it can be divided into ordinary type, flame retardant type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F279/04C08F2/38C08F2/44
Inventor 傅建永施懿军沈曙光周文斌徐小武
Owner ZHEJIANG OCEANKING DEVELOPMENT CO LTD
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