CN114316360A - Environment-friendly accelerant - Google Patents

Abstract

The invention relates to the field of accelerators, and discloses an environment-friendly accelerator which comprises the following components in parts by weight: 30-40 parts of white smoke, 40-60 parts of diisopropyl xanthate, 10-15 parts of processing aid and 10-20 parts of carrier; the environment-friendly accelerant does not contain the environment-friendly accelerant of dibenzothiazole and nitrosamine, is not allergic when contacting with human bodies, is a main accelerant with good processing safety, can be used independently or used together with other accelerants, has no odor, no odor and no toxicity in the components, is suitable for NR, SBR and BR general rubber, can not generate the phenomena of dew and color change when being used in white and bright rubber products, is safe to scorch, has the yellowing resistance grade of 4-4.5, and is environment-friendly and carbon-reducing.

Description

Environment-friendly accelerant

Technical Field

The invention relates to the field of accelerators, in particular to an environment-friendly accelerator.

Background

The accelerator can be used together with a catalyst or a fixing agent to improve the reaction rate; the following problems exist in the market at present: the current accelerator, generally an environment-friendly accelerator containing dibenzothiazoles and nitrosamines, can cause allergy when contacting with human bodies.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned deficiencies and providing a solution to at least one of the problems set forth above.

An environment-friendly accelerant comprises the following components in parts by weight:

30-40 parts of white smoke;

40-60 parts of diisopropyl xanthate;

10-15 parts of a processing aid;

10-20 parts of a carrier.

Preferably, the processing aid is naphthenic oil.

Preferably, the carrier is composed of one of nitrile rubber, ethylene propylene diene monomer and ethylene propylene diene monomer.

Preferably, the white smoke is silicon dioxide.

Preferably, 33-37 parts of white smoke, 47-55 parts of diisopropyl xanthate, 12-14 parts of processing aid and 13-17 parts of carrier.

Preferably, 35 parts of white smoke, 50 parts of diisopropyl xanthate, 13 parts of processing aid and 15 parts of carrier.

A preparation method of an environment-friendly accelerant comprises the following steps:

s1, weighing the following raw materials in parts by weight: 30-40 parts of white smoke; 40-60 parts of diisopropyl xanthate; 10-15 parts of a processing aid; 10-20 parts of a carrier.

S2, putting white smoke, diisopropyl xanthate, a processing aid and a carrier into a mixer, mixing for 30 minutes, and then discharging;

and S3, putting the mixed material in the step S2 into a screw machine for extrusion and granulation, wherein the temperature is below 70 ℃.

Compared with the prior art, the invention has the beneficial effects that: the environment-friendly accelerant does not contain the environment-friendly accelerant of dibenzothiazole and nitrosamine, is not allergic when contacting with human bodies, is a main accelerant with good processing safety, can be used independently or used together with other accelerants, has no odor, no odor and no toxicity in the components, is suitable for NR, SBR and BR general rubber, can not generate the phenomena of dew and color change when being used in white and bright rubber products, is safe to scorch, has the yellowing resistance grade of 4-4.5, and is environment-friendly and carbon-reducing.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment of the invention, the environment-friendly accelerant comprises the following components in parts by weight:

30-40 parts of white smoke for playing a role in adsorption;

40-60 parts of diisopropyl xanthate, which plays a promoting role;

10-15 parts of a processing aid;

10-20 parts of a carrier.

Preferably, the processing aid is naphthenic oil.

Preferably, the carrier is composed of one of nitrile rubber, ethylene propylene diene monomer and ethylene propylene diene monomer.

Preferably, the white smoke is silicon dioxide.

Preferably, 33-37 parts of white smoke, 47-55 parts of diisopropyl xanthate, 12-14 parts of processing aid and 13-17 parts of carrier.

Preferably, 35 parts of white smoke, 50 parts of diisopropyl xanthate, 13 parts of processing aid and 15 parts of carrier.

A preparation method of an environment-friendly accelerant comprises the following steps:

s1, weighing the following raw materials in parts by weight: 30-40 parts of white smoke; 40-60 parts of diisopropyl xanthate; 10-15 parts of a processing aid; 10-20 parts of a carrier;

s2, putting white smoke, diisopropyl xanthate, a processing aid and a carrier into a mixer, mixing for 30 minutes, and then discharging;

and S3, putting the mixed material in the step S2 into a screw machine for extrusion and granulation, wherein the temperature is below 70 ℃.

TABLE 1 compositions of examples 1-7

	1	2	3	4	5	6	7
								White cigarette	38	20	40	35	60	32	34
Diisopropyl xanthogenate	80	40	10	50	45	60	55
								Rubber processing oil	14	30	20	13	10	12	45
Nitrile rubber	32	17	40	15	12	22	10

The numerical values in the above tables are parts by weight

TABLE 2 comparative example

	A	B	C
				White cigarette	0	2	10
Diisopropyl xanthogenate	3	0	12
				Rubber processing oil	15	6	0
Nitrile rubber	30	15	20

The numerical values in the above tables are parts by weight

TABLE 3 mechanical Properties of rubber articles obtained in examples 1 to 7 and comparative examples A to C, respectively

	1	2	3	4	5	6	7	A	B	C
											Tensile strength	17.6	18.9	14.3	15.8	23.2	19.3	13.2	10.5	11.2	12.8
Bending strength	28.3	30.4	29.5	31.5	33.7	29.1	32.8	20.5	25.4	23.1
											Impact strength	16.7	19.4	19.1	17.5	21.1	15.7	18.4	11.3	13.7	10.9

In the tables, the tensile strength is in MPa, the flexural strength is in MPa, and the impact strength is in KJ/m.

As is clear from Table 3, the tensile strength, flexural strength and impact strength of the rubber products obtained by adding examples 1 to 7 to the vulcanization process of the rubber were significantly higher than those of the rubber products obtained by adding comparative examples A to C.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (7)

1. An environment-friendly accelerant is characterized by comprising the following components in parts by weight:

30-40 parts of white smoke;

40-60 parts of diisopropyl xanthate;

10-15 parts of a processing aid;

10-20 parts of a carrier.

2. The environment-friendly accelerator as claimed in claim 1, wherein the processing aid is a naphthenic oil.

3. The environmental protection accelerator as claimed in claim 1, wherein the carrier comprises one of nitrile rubber, ethylene propylene diene monomer and ethylene propylene diene monomer.

4. The environmental protection accelerator as set forth in claim 1, wherein the white smoke is composed of silica.

5. The environment-friendly accelerator as claimed in claim 1, wherein the accelerator comprises 33 to 37 parts of white smoke, 47 to 55 parts of diisopropyl xanthate, 12 to 14 parts of a processing aid and 13 to 17 parts of a carrier.

6. The environment-friendly accelerator as claimed in claim 1, wherein the accelerator comprises 35 parts of white smoke, 50 parts of diisopropyl xanthate, 13 parts of processing aid and 15 parts of carrier.

7. A process for the preparation of an environmentally friendly accelerator as claimed in any one of claims 1 to 6, which comprises the steps of:

s1, weighing the following raw materials in parts by weight: 30-40 parts of white smoke; 40-60 parts of diisopropyl xanthate; 10-15 parts of a processing aid; 10-20 parts of a carrier;

s2, putting white smoke, diisopropyl xanthate, a processing aid and a carrier into a mixer, mixing for 30 minutes, and then discharging;

and S3, putting the mixed material in the step S2 into a screw machine for extrusion and granulation, wherein the temperature is below 70 ℃.