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A kind of preparation method of the chlorinated polyethylene that is used for flame-retardant ABS production

A technology of chlorinated polyethylene and polyethylene, which is applied in the field of preparation of chlorinated polyethylene, can solve problems such as poor flame retardancy, lower ABS physical properties, and lower impact performance, and achieve good flame retardancy and toughening optimization, and good comprehensiveness performance effect

Active Publication Date: 2021-08-10
潍坊硕邑化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When ABS is used alone, its flame retardancy is poor. In practical applications, flame retardants should be added to improve its flame retardant effect, but adding flame retardants will reduce the physical properties of ABS, especially the impact properties of products. The price of flame retardant is 2 to 3 times that of ABS, which increases the cost of the product

Method used

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  • A kind of preparation method of the chlorinated polyethylene that is used for flame-retardant ABS production

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for chlorinated polyethylene produced by flame retardant ABS, comprising the following steps:

[0026] S1, take 100 parts of polyethylene, 3 parts of composite initiator, 5 parts of dibutyl phthalate, 15 parts of toluene, 1.5 parts of polyvinyl alcohol, 2 parts of dodecyl mercaptan and 1500 parts of hydrochloric acid solution according to the parts by weight share;

[0027] The composite initiator is a mixture of benzoyl peroxide and dicumyl peroxide in a weight ratio of 1:3.

[0028] S2. Add the hydrochloric acid solution into the reaction kettle, then add polyethylene, dibutyl phthalate and polyvinyl alcohol with a total weight of 30%, seal the reaction kettle, raise the temperature to 60°C, vacuumize the reaction kettle Nitrogen is introduced into the top of the reactor until the pressure in the kettle is greater than the standard pressure, and then chlorine gas with 15% polyethylene weight is introduced from the bottom of the reactor slowly (th...

Embodiment 2

[0034] A preparation method for chlorinated polyethylene produced by flame retardant ABS, comprising the following steps:

[0035] S1, take 150 parts of polyethylene, 1.5 parts of composite initiator, 10 parts of dibutyl phthalate, 8 parts of toluene, 2.5 parts of polyvinyl alcohol, 1 part of dodecyl mercaptan and 2000 parts of hydrochloric acid solution according to the parts by weight share;

[0036] The composite initiator is a mixture of benzoyl peroxide and dicumyl peroxide in a weight ratio of 1:3.

[0037] S2. Add hydrochloric acid solution into the reaction kettle, then add polyethylene, dibutyl phthalate and polyvinyl alcohol with a total weight of 40% of polyvinyl alcohol, seal the reaction kettle, raise the temperature to 50°C, vacuumize the reaction kettle Nitrogen is introduced into the top of the reactor until the pressure in the kettle is greater than the standard pressure, and then slowly (the introduction of chlorine gas is completed within 10 minutes) from t...

Embodiment 3

[0043] A preparation method for chlorinated polyethylene produced by flame retardant ABS, comprising the following steps:

[0044] S1, take 120 parts of polyethylene, 2 parts of composite initiator, 6 parts of dibutyl phthalate, 10 parts of toluene, 2 parts of polyvinyl alcohol, 1 part of dodecyl mercaptan and 1800 parts of hydrochloric acid solution according to the parts by weight share;

[0045] The composite initiator is a mixture of benzoyl peroxide and dicumyl peroxide in a weight ratio of 1:3.

[0046] S2. Add hydrochloric acid solution into the reaction kettle, then add polyethylene, dibutyl phthalate and polyvinyl alcohol with a total weight of 40% of polyvinyl alcohol, seal the reaction kettle, raise the temperature to 55°C, vacuumize the reaction kettle Nitrogen is introduced into the top of the reactor until the pressure in the kettle is greater than the standard pressure, then slowly (the introduction of chlorine gas is completed within 10 minutes) from the botto...

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Abstract

The invention discloses a preparation method of chlorinated polyethylene used in the production of flame-retardant ABS, S1, taking each raw material according to parts by weight; S2, pretreatment; S3, chlorination reaction; S4, chlorinated polyethylene slurry Carry out deacidification, neutralization, centrifugation and drying in sequence to obtain chlorinated polyethylene base material; S5, take various raw materials such as chlorinated polyethylene base material according to parts by weight; S6, heat up reaction, after the reaction, take the reaction liquid and separate , washing, and purification to obtain chlorinated polyethylene products for the production of flame-retardant ABS. The present invention modifies the base material of chlorinated polyethylene and adds chlorinated paraffin so that when chlorinated polyethylene is used as a raw material for ABS production, the melt flow rate will not decrease even if the amount added is relatively large. , so that chlorinated polyethylene will not affect its processing performance when it plays a better role in flame retardancy and toughening optimization of ABS.

Description

technical field [0001] The invention relates to the technical field of preparation of chlorinated polyethylene, in particular to a preparation method of chlorinated polyethylene used in the production of flame-retardant ABS. Background technique [0002] ABS resin is one of the five major synthetic resins. It has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties. It also has the characteristics of easy processing, stable product size, and good surface gloss. It is easy to paint. , coloring, and secondary processing such as surface metal spraying, electroplating, welding, hot pressing and bonding, etc. It is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction. Wide range of thermoplastic engineering plastics. [0003] When ABS is used alone, its flame retardancy is poor. In practical applications, flame retardants should be adde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/06C08L51/00C08K3/26C08K5/12C08F8/22C08F10/02C08F255/02C08F218/08C08F289/00C08L55/02
CPCC08F8/22C08F255/023C08F289/00C08K2003/265C08L51/06C08L55/02C08L2201/02C08L2205/02C08L2205/03C08L51/00C08K3/26C08K5/12C08F10/02C08F218/08
Inventor 孙振宇李垂祥栾京民
Owner 潍坊硕邑化学有限公司