A kind of antistatic agent and its preparation method and application

Abstract

The present invention relates to the technical field of antistatic agents, and more particularly, to an antistatic agent and a preparation method and application thereof. The preparation raw materials of the antistatic agent include acid anhydride grafted polyether and polypropylene. The acid anhydride grafted polyether is grafted to polypropylene by chemical reaction. Compared with the traditional physical blending method, the polyether is not easy to be precipitated, and the time of antistatic effect is increased. The antistatic agent after grafting is in The distribution in polypropylene is better and uniform, and the antistatic effect is better. Select polyether and polypropylene grafting with appropriate chain length to promote the dispersion of the antistatic agent during the polyolefin processing, while maintaining a certain dispersed phase structure, further promoting the improvement of antistatic properties. Use dianhydride and vinyl polyether grafting to increase the double bond content on the acid anhydride grafted polyether, promote the possibility of grafting polypropylene at lower temperature and time in the process of blending and extrusion, and improve the antistatic agent. Stability and processing efficiency to facilitate large-scale production and applications.

Description

technical field

[0001] The present invention relates to the technical field of antistatic agents, and more particularly, to an antistatic agent and a preparation method and application thereof. Background technique

[0002] Polypropylene, abbreviated as PP, is a non-toxic, colorless, odorless thermoplastic resin with excellent performance. It is a colorless and translucent thermoplastic general-purpose plastic. Since its inception, it has developed rapidly in many fields. However, the excellent insulation properties of PP lead to its high resistivity, and it is easy to accumulate charges during production, processing or use. Traditionally, in order to solve the electrostatic problem of PP, most of them are used to add PEG, carbon black, graphite, metal fillers, etc. to achieve the corresponding antistatic purpose. This method has certain effects, but there are still uneven distribution of fillers, poor compatibility, and easy Problems such as precipitation and short-term a...

Examples

preparation example Construction

[0038] The acid anhydride grafted polyether of the present invention can be prepared by esterification of vinyl polyether and acid anhydride. In one embodiment, the preparation method of the acid anhydride grafted polyether comprises: heating the vinyl polyether to 120~120~ 160° C., after adding acid anhydride to react, cooling and powdering to obtain the acid anhydride grafted polyether. The determination of the reaction end point can be carried out according to the acid value. When the acid value remains unchanged (about 4-7h), the reaction is terminated.

[0039] In a preferred embodiment, the molar ratio of the vinyl polyether and acid anhydride of the present invention is (1-2.5): 1, which can be exemplified as 1: 1, 1.1: 1, 1.2: 1, 1.3: 1, 1.4:1, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, 2:1, 2.1:1, 2.2:1, 2.3:1, 2.4:1, 2.5:1, Preferably it is 1.5-1.5, More preferably, it is 1.7-2.3.

[0040] polypropylene

[0041] The applicant unexpectedly found that when using homopolyp...

Embodiment 1

[0051] This example provides an antistatic agent. The preparation raw materials of the antistatic agent include acid anhydride grafted polyether and polypropylene, and the weight ratio is 1:2; the acid anhydride grafted polyether is prepared from vinyl polyether and acid anhydride. , the molar ratio is 1.7:1, and the acid anhydride is hydrogenated pyromellitic anhydride; the preparation method of the acid anhydride-grafted polyether includes: heating the vinyl polyether to 130° C., adding the acid anhydride to react, cooling, and powdering to obtain The acid anhydride grafted polyether; the polypropylene is a homopolypropylene; the preparation raw materials of the antistatic agent further include an initiator, the initiator is dicumyl peroxide, and the initiator accounts for the acid anhydride graft. 0.07‰ of the total weight of branched polyether and polypropylene.

[0052] The vinyl polyether was purchased from APEG-2000.

[0053] The homopolypropylene was purchased from V3...

Embodiment 2

[0056] This example provides an antistatic agent. The preparation raw materials of the antistatic agent include acid anhydride grafted polyether and polypropylene, and the weight ratio is 2:3; the acid anhydride grafted polyether is prepared from vinyl polyether and acid anhydride. , the molar ratio is 2.3:1, and the acid anhydride is pyromellitic anhydride; the preparation method of the acid anhydride-grafted polyether comprises: heating the vinyl polyether to 150° C., adding the acid anhydride to react, cooling and pulverizing to obtain the obtained the acid anhydride grafted polyether; the polypropylene is a homopolypropylene; the raw materials for the preparation of the antistatic agent also include an initiator, the initiator is di-tert-butyl dicumyl peroxide, and the initiator It accounts for 0.07‰ of the total weight of acid anhydride grafted polyether and polypropylene.

[0057] The vinyl polyether was purchased from HPEG-2400.

[0058] The homopolypropylene was purch...

technical field

[0001] The present invention relates to the technical field of antistatic agents, and more particularly, to an antistatic agent and a preparation method and application thereof. Background technique

[0002] Polypropylene, abbreviated as PP, is a non-toxic, colorless, odorless thermoplastic resin with excellent performance. It is a colorless and translucent thermoplastic general-purpose plastic. Since its inception, it has developed rapidly in many fields. However, the excellent insulation properties of PP lead to its high resistivity, and it is easy to accumulate charges during production, processing or use. Traditionally, in order to solve the electrostatic problem of PP, most of them are used to add PEG, carbon black, graphite, metal fillers, etc. to achieve the corresponding antistatic purpose. This method has certain effects, but there are still uneven distribution of fillers, poor compatibility, and easy Problems such as precipitation and short-term a...

Examples

preparation example Construction

[0038] The acid anhydride grafted polyether of the present invention can be prepared by esterification of vinyl polyether and acid anhydride. In one embodiment, the preparation method of the acid anhydride grafted polyether comprises: heating the vinyl polyether to 120~120~ 160° C., after adding acid anhydride to react, cooling and powdering to obtain the acid anhydride grafted polyether. The determination of the reaction end point can be carried out according to the acid value. When the acid value remains unchanged (about 4-7h), the reaction is terminated.

[0039] In a preferred embodiment, the molar ratio of the vinyl polyether and acid anhydride of the present invention is (1-2.5): 1, which can be exemplified as 1: 1, 1.1: 1, 1.2: 1, 1.3: 1, 1.4:1, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, 2:1, 2.1:1, 2.2:1, 2.3:1, 2.4:1, 2.5:1, Preferably it is 1.5-1.5, More preferably, it is 1.7-2.3.

[0040] polypropylene

[0041] The applicant unexpectedly found that when using homopolyp...

Embodiment 1

[0051] This example provides an antistatic agent. The preparation raw materials of the antistatic agent include acid anhydride grafted polyether and polypropylene, and the weight ratio is 1:2; the acid anhydride grafted polyether is prepared from vinyl polyether and acid anhydride. , the molar ratio is 1.7:1, and the acid anhydride is hydrogenated pyromellitic anhydride; the preparation method of the acid anhydride-grafted polyether includes: heating the vinyl polyether to 130° C., adding the acid anhydride to react, cooling, and powdering to obtain The acid anhydride grafted polyether; the polypropylene is a homopolypropylene; the preparation raw materials of the antistatic agent further include an initiator, the initiator is dicumyl peroxide, and the initiator accounts for the acid anhydride graft. 0.07‰ of the total weight of branched polyether and polypropylene.

[0052] The vinyl polyether was purchased from APEG-2000.

[0053] The homopolypropylene was purchased from V3...

Embodiment 2

[0056] This example provides an antistatic agent. The preparation raw materials of the antistatic agent include acid anhydride grafted polyether and polypropylene, and the weight ratio is 2:3; the acid anhydride grafted polyether is prepared from vinyl polyether and acid anhydride. , the molar ratio is 2.3:1, and the acid anhydride is pyromellitic anhydride; the preparation method of the acid anhydride-grafted polyether comprises: heating the vinyl polyether to 150° C., adding the acid anhydride to react, cooling and pulverizing to obtain the obtained the acid anhydride grafted polyether; the polypropylene is a homopolypropylene; the raw materials for the preparation of the antistatic agent also include an initiator, the initiator is di-tert-butyl dicumyl peroxide, and the initiator It accounts for 0.07‰ of the total weight of acid anhydride grafted polyether and polypropylene.

[0057] The vinyl polyether was purchased from HPEG-2400.

[0058] The homopolypropylene was purch...