CN110437921B

CN110437921B - Food-grade water-soluble dry anti-wear chain lubricant and preparation method thereof

Info

Publication number: CN110437921B
Application number: CN201910707627.3A
Authority: CN
Inventors: 胡纪根; 李常馥; 赵淑玲; 吴桂昌; 丁磊; 鞠伟琴
Original assignee: Henan Beijia Lubrication Technology Co ltd
Current assignee: Henan Beijia Lubrication Technology Co ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2021-09-03
Anticipated expiration: 2039-08-01
Also published as: CN110437921A

Abstract

The invention discloses a food-grade water-soluble dry antiwear chain lubricant and a preparation method thereof, wherein the food-grade water-soluble dry antiwear chain lubricant comprises the following components in percentage by weight: glucose powder pentahydroxyhexanal 3.5-5.5%, phospholipid or modified phospholipid 1-10%; 1-10% of at least one surfactant; 0.2-1% of at least one food grade bactericide; 0.1-0.5% of at least one food-grade antioxidant; 0.05-0.2% of at least one food grade defoaming agent; the balance being deionized water. The food-grade dry antiwear chain channel lubricant is a clear transparent aqueous solution and is used for lubricating a conveying chain channel, particularly a conveying chain channel in the food industry. The product has good lubrication and wear resistance, can effectively solve the problem of wear of a chain channel caused by poor performance of the lubricant, and eliminates potential food safety hazards possibly caused by contact of the lubricant and food packages in the production process.

Description

Food-grade water-soluble dry anti-wear chain lubricant and preparation method thereof

Technical Field

The invention belongs to the technical field of lubricants, and particularly relates to a food-grade water-soluble dry antiwear chain lubricant and a preparation method thereof.

Background

Conveying chain lubricants are widely used in the food industry for lubricating conveying chains of dairy products and beverage products, and these high-speed conveying chains are used for conveying products such as bottles, cans or cartons for packaging, so as to prevent the products from falling, falling or turning on one side during conveying, thereby preventing the production efficiency of the whole production line from being affected.

The chain channel lubricant which is widely used at the earliest is soap (fatty acid salt), and the product consists of soap, water, surfactant and some water-soluble solvents, and plays a role in lubricating by immersing the chain channel in soap solution; then a series of chain-path lubricants based on fatty amines and ether amines were developed by mixing the fatty amines in a ratio of 1: the ratio of 100-500 is diluted by water and sprayed on the chain channel to play a role in lubrication. The two types of lubricants need continuous spraying operation in the using process and cannot be interrupted, a large amount of water is used in the operating process, the operating environment is wet and smooth, water resources are greatly wasted, bacteria are easily bred in the wet environment, and great hidden dangers are brought to the production environment.

In order to solve the problems, a dry chain channel lubricant is newly developed to replace the product, and is different from the using condition needing to be diluted by water, the dry chain channel lubricant does not need to be diluted by water, only needs to intermittently spray or brush stock solution of the product to a contact surface needing to be lubricated in a fixed-point and quantitative manner, and along with the running of a conveying chain channel, the moisture in the lubricant is gradually volatilized, and a layer of dry film is gradually formed on the surface of the chain channel to play a role in lubrication; the lubricant greatly improves the operation environment of a construction site and also avoids unnecessary waste of water resources. The most common dry chain lubricant in the market today is mainly emulsion products of organosilicon materials, which have certain effect on the lubrication of plastic containers such as PET containers, but have the abrasion of chains caused by insufficient lubrication and wear resistance, and the emulsion as an unstable state also affects the lubrication effect and the storage time of the lubricant. Therefore, the present invention has been made in order to solve the industrial problem.

The soybean lecithin is a natural soybean extract, is usually used as a food emulsifier in the food industry, has a very good lubricating effect, and can be used as a lubricating additive for blending lubricating oil. The commercial soybean lecithin mainly comprises 60-65% of phospholipid and 35-40% of soybean oil; the soybean phospholipid is deoiled and modified to obtain hydroxylated soybean phospholipid and hydrogenated soybean phospholipid, so that the hydrophilicity and oxidation stability of the soybean phospholipid are improved, and the application range of the lecithin is expanded.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a food-grade water-soluble dry antiwear chain channel lubricant and a preparation method thereof, wherein lecithin is dispersed in a glucose pentahydroxyhexanal aqueous solution to play a role in lubrication and antiwear. The invention uses the aqueous solution of glucose powder pentahydroxyhexanal with a certain content as the carrier of the dry lubricant to replace the pure water base liquid, thereby improving the lubricating property and stability of the water-based lubricating liquid carrier.

In order to solve the technical problems, the invention adopts the following technical scheme:

a food-grade water-soluble dry antiwear chain lubricant composition comprises the following components in percentage by weight: glucose powder pentahydroxyhexanal 3.5-5.5%, phospholipid or modified phospholipid 1-10%; 1-10% of at least one surfactant; 0.2-1% of at least one food grade bactericide; 0.1-0.5% of at least one food-grade antioxidant; 0.05-0.2% of at least one food grade defoaming agent; the balance being deionized water.

Further, the phospholipid is soybean phospholipid, and the modified phospholipid is modified soybean phospholipid.

Further, the soybean phospholipid is hydroxylated soybean phospholipid and hydrogenated soybean phospholipid, preferably deoiled hydroxylated soybean phospholipid or deoiled hydrogenated soybean phospholipid.

Further, the surfactant is an anionic surfactant or an amphoteric surfactant.

Further, the food-grade antioxidant is one or more of water-soluble vitamin C sodium salt or vitamin E succinate.

Further, the food-grade bactericide is one or more of ethylparaben or polyhexamethylene biguanide hydrochloride.

Further, the food-grade defoaming agent is an organic silicon defoaming agent.

The preparation method of the food-grade water-soluble dry antiwear chain lubricant comprises the following steps: selecting the components according to the weight percentage, firstly adding glucose powder pentahydroxyhexanal into deionized water, uniformly stirring, then adding phospholipid or modified phospholipid into an aqueous solution, fully stirring and wetting until no visible block-shaped aggregate exists in the solution, adding a surfactant into the solution, and continuously stirring until the solution is completely clear and transparent; and finally, sequentially adding the antioxidant, the bactericide and the defoamer, and stirring until the antioxidant, the bactericide and the defoamer are completely dissolved to obtain the food-grade water-soluble dry antiwear chain way lubricant.

Further, the prepared food-grade water-soluble dry antiwear chain channel lubricant is a clear and transparent aqueous solution.

The invention has the beneficial effects that: 1. the lubricating property of the glucose powder pentahydroxyhexanal solution is superior to that of water, and the fatigue life of the glucose powder pentahydroxyhexanal solution is 2-3 times that of the water; the invention mainly adopts soybean lecithin or modified phospholipid (hydroxylated soybean phospholipid) as a main lubricating component; the soybean phospholipids themselves are hardly soluble in water, and are generally dispersed in water in an emulsion state, and thus have poor stability. Multiple experiments finally find that the lecithin and a surfactant are matched in a specific proportion to form a clear and transparent solution, the discovery greatly improves the stability of the product and widens the application range of the product, and meanwhile, the experimental result shows that the lubricant has very good lubricating and wear-resisting effects on packaging containers made of various materials. 2. The invention is mainly used for lubricating the product conveying chain path, in particular to the product conveying chain path in the food industry; the dry lubricant is a clear and transparent solution, so that the storage stability of the product is improved, and the glucose powder pentahydroxyhexanal is added into a certain amount of deionized water to replace pure water-based base liquid so as to improve the lubricating property of a water-based lubricating liquid matrix; the product has good lubrication and abrasion resistance, and effectively solves the problem of abrasion of a chain channel caused by poor performance of a lubricant; all the components are food-grade raw materials, so that the potential food safety hazard caused by contact of the lubricant and food packages in the production and transportation processes is eliminated.

Drawings

FIG. 1 is a graph comparing the storage stability of lubricants of the present invention and commercially available products.

Detailed Description

The present invention is further illustrated by the following specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

The water-soluble food-grade dry chain lubricant disclosed by the invention is prepared by selecting a proper amount of components according to weight percentage, adding glucose powder and pentahydroxyhexanal into deionized water, uniformly stirring, adding soybean lecithin powder into the solution, fully stirring and wetting until no visible block aggregate exists in the solution, adding a surfactant into the solution, and continuously stirring until the solution is completely clear and transparent; and finally, sequentially adding the antioxidant, the bactericide and the defoaming agent, and stirring until the components are completely dissolved.

See table 7 for component content (tables 1-6) and performance evaluation data for examples 1-6. Each component can be obtained commercially.

Table 1 component contents of example 1

Components	Content (wt%)
		Glucose powder pentahydroxyhexanal	3.5
Hydroxylated soybean lecithin	2
		Glycerol	10
Vitamin C sodium salt	0.2
		Vitamin E succinate	0.1
Nipagin ethyl ester	0.10
		Organic silicon defoaming agent	0.05
Deionized water	Balance of

Table 2 component contents of example 2

Table 3 component contents of example 3

Components	Content 3 (wt%)
		Glucose powder pentahydroxyhexanal	4.5
Hydroxylated soybean lecithin	2.5
		Sodium dodecyl sulfate	2.0
Vitamin C sodium salt	0.2
		Vitamin E succinate	0.1
Nipagin ethyl ester	0.10
		Organic silicon defoaming agent	0.05
Deionized water	Balance of

Table 4 component contents of example 4

Components	Content 4 (wt%)
		Hydroxylated soybean lecithin	2
Glycerol	10
		Vitamin C sodium salt	0.2
Vitamin E succinate	0.1
		Nipagin ethyl ester	0.10
Organic silicon defoaming agent	0.05
		Deionized water	Balance of

Table 5 component contents of example 5

Components	Content 5 (wt%)
		Hydrogenated soybean lecithin	2.5
Sodium dodecyl sulfate	2.5
		Vitamin C sodium salt	0.2
Vitamin E succinate	0.1
		Nipagin ethyl ester	0.10
Organic silicon defoaming agent	0.05
		Deionized water	Balance of

Table 6 component contents of example 6

Components	Content (wt%)
		Hydroxylated soybean lecithin	2.5
Sodium dodecyl sulfate	2.0
		Vitamin C sodium salt	0.2
Vitamin E succinate	0.1
		Nipagin ethyl ester	0.10
Organic silicon defoaming agent	0.05
		Deionized water	Balance of

Lubrication performance testing

The lubricity of the dry lubricant was tested by the test conveyor. The tensile force generated during the running of the chain was tested by placing the food packaging containers on the chain sprayed with lubricant at an average running speed of 1.2m/s by connecting a computer-induced tensile force meter to beverage containers, which may be made of glass, PET, metal or cardboard boxes, and the conveyor chain was made of stainless steel or plastic (polyacetal). During the test, the lubricant was sprayed on the surface of the strand for 30 seconds, and the tensile force value F was measured after 30 min. The friction coefficient μ is calculated by the following formula.

Mu is F/G (G is the gravity of the beverage container)

TABLE 7 comparative analysis of friction coefficient test data

Lubricant agent	Coefficient of friction mu
		Example 1	0.07
Example 2	0.05
		Example 3	0.06
Example 4	0.13
		Example 5	0.10
Example 6	0.12
		Commercially available dry lubricant emulsion 1	0.20
Commercially available dry lubricant emulsion 2	0.25

The performance evaluation data in table 7 show that in examples 1-3 of the present invention, glucose pentahydroxyhexanal was used to make a specific solution as the carrier for the dry lubricant, which is superior to the pure deionized water solution as the carrier for the dry lubricant in about 2 times the coefficient of friction of the lubricant, and is superior to many commercially available lubricants. Particularly, the product is a clear and transparent solution, which not only improves the stability of long-term storage, but also ensures the continuous and stable lubricating and antiwear effects of the product. Because all the components are food-grade raw materials, the potential food safety hazard caused by the contact of the lubricant and food packages in the production process is eliminated.

Storage stability test

The solutions of examples 1 to 3 were placed in a constant temperature oven at 40 ℃ and left to stand for 8 months, and the state change of the solution was observed, and after 8 months, the solution was still clear and transparent without the phenomena of delamination, oil floating and the like. As shown in FIG. 1(a) below, FIG. 1(b) shows a commercially available emulsion product.

The food-grade dry antiwear chain channel lubricant is clear and transparent aqueous solution, is mainly used for lubricating a conveying chain channel, particularly a conveying chain channel in the food industry, and is applied by intermittently spraying or brushing raw liquid at fixed points. The product has good lubrication and wear resistance, can effectively solve the problem of wear of a chain channel caused by poor performance of the lubricant, has all components in food grade, and eliminates potential food safety hazards caused by contact of the lubricant and food packages in the production process.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A food-grade water-soluble dry antiwear chain channel lubricant is characterized in that: comprises the following components in percentage by weight: glucose powder pentahydroxyhexanal 3.5-5.5%, phospholipid or modified phospholipid 1-10%; 1-10% of at least one surfactant; 0.2-1% of at least one food grade bactericide; 0.1-0.5% of at least one food-grade antioxidant; 0.05-0.2% of at least one food grade defoaming agent; the balance of deionized water;

the phospholipid is soybean phospholipid, and the modified phospholipid is modified soybean phospholipid;

the soybean phospholipid is hydroxylated soybean phospholipid and hydrogenated soybean phospholipid;

the surfactant is an anionic surfactant or an amphoteric surfactant.

2. The food-grade water-soluble dry antiwear chain channel lubricant of claim 1, wherein: the food-grade antioxidant is one or more of water-soluble vitamin C sodium salt or vitamin E succinate.

3. The food-grade water-soluble dry antiwear chain channel lubricant of claim 1, wherein: the food-grade bactericide is one or more of ethylparaben or polyhexamethylene biguanide hydrochloride.

4. The food-grade water-soluble dry antiwear chain channel lubricant of claim 1, wherein: the food-grade defoaming agent is an organic silicon defoaming agent.

5. The method of preparing a food grade water soluble dry antiwear chain lubricant according to any one of claims 1 to 4, wherein: adding glucose powder pentahydroxyhexanal into deionized water, uniformly stirring, adding phospholipid or modified phospholipid into the aqueous solution, fully stirring and wetting until no visible block aggregate exists in the solution, adding a surfactant into the solution, and continuously stirring until the solution is completely clear and transparent; and finally, sequentially adding the antioxidant, the bactericide and the defoamer, and stirring until the antioxidant, the bactericide and the defoamer are completely dissolved to obtain the food-grade water-soluble dry antiwear chain way lubricant.

6. The method of preparing a food grade water soluble dry antiwear chain way lubricant according to claim 5, wherein: the prepared food-grade water-soluble dry antiwear chain lubricant composition is a clear and transparent aqueous solution.