CN109486436B - Electronic grade glass fiber yarn adhesive and preparation method thereof - Google Patents

Abstract

The invention belongs to the technical field of glass fiber yarns, and relates to an electronic grade glass fiber yarn adhesive and a preparation method thereof. The electronic-grade glass fiber yarn adhesive comprises the following raw material components in percentage by mass: 8% -10% of hydroxyethyl cellulose; 30% -40% of deionized water; 2% -5% of methyl cellulose; 8% -15% of ethanol; 0.01 to 0.5 percent of surface active auxiliary agent; 3.5 to 5 percent of benzoic acid isooctanoic acid diethylene glycol ester. 30 to 35 percent of methyl acetate. Compared with the prior art, the invention has the beneficial effects that: the electronic grade glass fiber yarn adhesive has good yarn splicing effect, can effectively increase the breaking strength of the bonded yarn, reduce the residual amount of the adhesive and reduce the yarn breaking ratio; meanwhile, the preparation method of the electronic-grade glass fiber yarn adhesive is simple and easy to implement, strong in environmental protection and low in cost.

Description

Electronic grade glass fiber yarn adhesive and preparation method thereof

Technical Field

The invention belongs to the technical field of glass fiber yarns, and relates to an adhesive applied to bonding of electronic grade glass fiber yarns after yarn breakage and a preparation method thereof.

Background

The electronic grade glass fiber cloth is specially applied to copper-clad plate materials, has high requirements on the insulativity of the materials, requires good adhesive property of the adhesive, can quickly dry an adhesive film formed on the surface after bonding, has few residues after high-temperature desizing, and does not influence the insulating property of the electronic grade glass fiber cloth. In addition, the demand for the adhesive is not very large, so that a suitable adhesive is not found in the market, no adhesive manufacturer specially develops the special adhesive, the adhesive is generally prepared by an enterprise according to the industry requirement, and the final product meets the requirement of a client.

The electronic-grade glass fiber cloth is a plain weave fabric woven by electronic-grade glass fiber warps and wefts through up-down sinking and floating and mutual interlacing, and the weave of the plain weave structure has a plurality of interweaving points, the warps and the wefts are tightly cohered with each other, the texture is firm, the appearance is stiff and smooth, and the electronic-grade glass fiber cloth can provide strong reinforcing, supporting and insulating effects for a composite material, so that the electronic-grade glass fiber cloth is widely applied to printed circuit copper-clad plate materials and is one of main raw materials of a printed circuit board. The electronic-grade glass fiber warps are easy to have warp yarn breakage abnormity due to the action of tension in the warping process or the weaving process, if the electronic-grade glass fiber warps are connected by adopting common manual knotting, the surfaces of the woven fabrics are provided with convex joints, the appearance of the cloth surfaces is influenced, and therefore the mode of connecting the yarns commonly used in the industry is that the broken yarns are well bonded by adopting a special binder, the bonded joints are relatively flat, the surfaces of the yarns are free of monofilament loosening, and the surface appearance of the woven fabrics is relatively good. Therefore, the adhesive is required to have better adhesive strength after bonding yarns, can ensure that a film on the surface of a joint can be quickly dried, cannot be stopped for a long time so as not to influence production, can be easily removed in the subsequent desizing process, has less residues, and does not influence the insulativity of the electronic-grade glass fiber cloth. Particularly, as electronic products are developed in the direction of ultra-thin, ultra-light and ultra-fast, the probability of yarn breakage caused by the use of ultra-fine electronic grade glass fiber yarns in the production process of the ultra-thin electronic grade glass fiber cloth is higher, and thus the need of the binder is more frequent.

Chinese patent ZL201610684718.6 discloses an adhesive for bonding electronic grade glass fiber yarns. The adhesive contains organic volatile chemicals such as dioctyl phthalate (DOP) and acetone. Dioctyl phthalate is a commonly used plasticizer and presents the hazard of irritating odor emissions during the dispensing process. Acetone is extremely inflammable, volatile and irritant, has an anesthetic effect on the central nervous system of a human body, is easy to cause discomfort symptoms such as weakness, nausea, headache, dizziness, agitation and the like, and can cause vomiting, urgency of breath, spasm and even coma in serious patients. It has irritation to eyes, nose and throat. The chronic effect is that the product is in long-term contact with the skin, and the chronic effect is that dizziness, burning sensation, pharyngitis, bronchitis, hypodynamia, easy excitement and the like appear, and the skin can be caused to be dermatitis after long-term repeated contact. Aiming at the two chemicals with pungent odor, the strength and permeability of the adhesive bonding yarn are still insufficient in the using process, so that the formula needs to be redesigned, the harm of the chemicals to human bodies is reduced, and the adhesive with better bonding strength is developed.

In addition, with the gradual enhancement of the environmental protection system, enterprises are required to continuously implement clean production, and meanwhile, the enterprises also gradually introduce the authentication of an ISO14001 environmental management system and the authentication of an ISO18000 occupational health and safety management system, and the control standard of harmful substances influencing the environmental health in the production process is stricter than the conventional control standard, so that the original chemicals need to be re-identified, the types and the quantity of the chemicals harmful to the environment and the personnel are reduced, particularly, Volatile Organic Compounds (VOCs) in the process need to be controlled to meet the requirements of policies and laws and regulations, the environment is protected, the volatile organic compounds are used little or not, nontoxic and harmless chemicals and formulas thereof are introduced, so that the requirements of safe production and clean production are achieved without influencing the production environment and harming the health of personnel.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the electronic-grade glass fiber yarn adhesive with better environmental protection and bonding performance.

In order to achieve the above object, the present invention provides the following technical solutions:

an electronic grade glass fiber yarn adhesive comprises the following raw material components in percentage by mass:

8% -10% of hydroxyethyl cellulose;

30% -40% of deionized water;

2% -5% of methyl cellulose;

8% -15% of ethanol;

0.01 to 0.5 percent of surface active auxiliary agent;

3.5 to 5 percent of benzoic acid isooctanoic acid diethylene glycol ester.

30 to 35 percent of methyl acetate.

The hydroxyethyl cellulose adopted in the invention is nonionic soluble cellulose ether formed by alkalizing cellulose macromolecules (water insoluble) and then etherifying the cellulose macromolecules, wherein the hydroxyethyl cellulose contains hydroxyl groups in molecules, has chemical activity and is easy to dissolve in water.

The cellulose formate used in the invention has good film-forming property and adhesiveness.

In the invention, environment-friendly diethylene glycol isooctanoate benzoate (type 520) is used as a plasticizer, so that the viscosity and the flexibility of the adhesive are improved. The isooctyl benzoate is a plasticizer with low volatility and no pungent smell, and cannot volatilize in the material soaking process to generate an unpleasant smell, so that the isooctyl benzoate does not harm a human body.

In the invention, methyl acetate and ethanol are used as solvents to dissolve hydroxyethyl cellulose to form a viscous adhesive. Methyl acetate is colorless and transparent liquid with aromatic odor, and has no unpleasant odor during the process of preparing the adhesive, and has no influence on the health of staff.

In the invention, the surfactant is added to increase the permeability of the adhesive, so that the adhesive can quickly permeate into the yarn, and the bonding strength is enhanced. The surfactant auxiliary can be selected from hydrocarbon surfactant or organosilicon surfactant. For example, silicone surfactants, specifically Dow Corning Q2-5211 surfactants, can be selected, which are used in small amounts to quickly wet the yarn surface and increase the permeability and dispersibility of the adhesive, thereby increasing the post-bond strength.

The preparation method of the electronic grade glass fiber yarn adhesive provided by the invention comprises the following steps:

(1) weighing the raw material components on an electronic scale according to the weight percentage, and placing the raw material components in a fume hood for later use.

(2) In a fume hood, hydroxyethyl cellulose is added into the deionized water solution and stirred for 15 minutes continuously, so that the hydroxyethyl cellulose is slowly dissolved to form a relatively uniform mixed solution A.

(3) Adding methyl cellulose, ethanol and methyl acetate into the mixed solution A obtained in the step (2), and then continuing stirring for 15 minutes to slowly dissolve the mixture to form a relatively uniform mixed solution B.

(4) Adding the surface active auxiliary agent into the mixed solution B obtained in the step (3), and continuing stirring for 15 minutes.

(5) Finally, diethylene glycol isooctanoate benzoate was added and stirring was continued for 3 hours.

The using method comprises the following steps: pouring the prepared adhesive into a toothpaste tube, covering the toothpaste tube with a cover, and taking the adhesive after the electronic-grade glass fiber warp yarns are broken.

Compared with the prior art, the invention has the beneficial effects that: the electronic-grade glass fiber yarn adhesive is prepared from environment-friendly and harmless raw material components, has a good yarn splicing effect, can effectively increase the breaking strength of the bonded yarn, reduces the residual amount of the adhesive, and reduces the yarn breaking ratio; meanwhile, the preparation method of the electronic-grade glass fiber yarn adhesive is simple and easy to implement, strong in environmental protection and low in cost.

Detailed Description

The technical scheme and the effect of the invention are further verified by combining the embodiment and the comparative experiment.

Example 1

An electronic grade glass fiber yarn adhesive comprises the following components in percentage by mass:

TABLE 1 compositions and proportions of the raw materials of the present invention

New formula	Chemical name	Quality (g)
			1	Hydroxyethyl cellulose	10
2	Acetic acid methyl ester	35
			3	Methyl cellulose	3
4	Ethanol	10
			5	Surface active agent	0.1
6	Benzoic acid diethylene glycol isooctanoate	3.5
			7	Deionized water	38.4

The preparation method of the electronic grade glass fiber yarn adhesive comprises the following steps:

(1) weighing the raw material components on an electronic scale according to the weight percentage, and placing the raw material components in a fume hood for later use.

(2) In a fume hood, hydroxyethyl cellulose is added into the deionized water solution and stirred for 15 minutes continuously, so that the hydroxyethyl cellulose is slowly dissolved to form a relatively uniform mixed solution A.

(3) Adding methyl cellulose, ethanol and methyl acetate into the mixed solution A obtained in the step (2), and then continuing stirring for 15 minutes to slowly dissolve the mixture to form a relatively uniform mixed solution B.

(4) Adding the surface active auxiliary agent into the mixed solution B obtained in the step (3), and continuing stirring for 15 minutes.

(5) Finally, diethylene glycol isooctanoate benzoate was added and stirring was continued for 3 hours.

The using method comprises the following steps: pouring the prepared adhesive into a toothpaste tube, covering the toothpaste tube with a cover, and taking the adhesive after the electronic-grade glass fiber warp yarns are broken.

The adhesive is configured according to the invention and is used in warping and weaving processes of cloth varieties such as 1080, 106, 1037 and 1027.

Comparative example 1

The comparative example adopts the adhesive disclosed in Chinese patent ZL201610684718.6, and the formula proportion and the preparation method thereof are as follows:

table 2 raw material composition and ratio of prior art formulation

Original adhesive formula	Chemical name	Quality (g)
			1	Acetone (II)	71.3
2	Cellulose acetate	12.5
			3	Ethanol	11.5
4	Cellulose formate	1.6
			5	Dioctyl phthalate	3.1

Weighing the raw materials according to weight, pouring acetone into cellulose acetate for stirring, uniformly mixing for later use, pouring ethanol into cellulose formate for stirring, uniformly mixing, then mixing the two mixed solutions again, adding dioctyl phthalate, continuously stirring for about 3 hours, pouring into a toothpaste tube, and covering for later use.

The adhesive prepared according to the comparative example is also used in the warping and weaving process of 1080, 106, 1037, 1027 and other cloth warps.

The above examples and comparative examples were subjected to experimental tests, and the specific results are compared in table 3 below.

Table 3 comparison of test results of examples and comparative examples

Description of the test methods:

1. breaking strength: measuring by adopting a tensile testing machine, bonding the yarns by using the adhesive, standing, drying and testing;

2. adhesive residual quantity: weighing m0 of the crucible, putting a certain amount of adhesive sample in the crucible, weighing m1 of the crucible, putting the crucible in a 625-DEG C high-temperature furnace for burning for 30 minutes, taking out the crucible, putting the crucible in a drying agent for cooling for 30 minutes, weighing m2 of the burned weight, and calculating the residual amount of the adhesive according to the weight difference, wherein the residual amount is 100 percent (m2-m0)/(m1-m 0);

3. the yarn breaking ratio is as follows: and bonding a whole set of warps in the warping process, observing whether yarn breakage occurs or not when the warping machine is started, and recording the number of the broken yarns.

As can be seen from the test results in Table 3, the electronic grade glass fiber yarn adhesive provided by the invention can effectively increase the breaking strength of the adhesive yarn, reduce the residual amount of the adhesive and reduce the yarn breaking ratio.

The above description is only illustrative of the preferred embodiments of the present invention and should not be taken as limiting the scope of the invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure should be considered as equivalent effective embodiments, and all the changes or modifications should fall within the protection scope of the technical solution of the present invention.

Claims (1)

1. The electronic-grade glass fiber yarn adhesive is characterized by comprising the following raw material components in percentage by mass:

8% -10% of hydroxyethyl cellulose;

30% -40% of deionized water;

2% -5% of methyl cellulose;

8% -15% of ethanol;

0.01 to 0.5 percent of surface active auxiliary agent;

3.5% -5% of benzoic acid diethylene glycol isooctanoate;

30% -35% of methyl acetate;

the method comprises the following steps:

(1) weighing the raw material components of the electronic-grade glass fiber yarn adhesive according to the weight percentage, and placing the raw material components in a fume hood for later use;

(2) in a fume hood, adding hydroxyethyl cellulose into the deionized water solution, and continuously stirring for 15 minutes to slowly dissolve the hydroxyethyl cellulose to form a more uniform mixed solution A;

(3) adding methyl cellulose, ethanol and methyl acetate into the mixed solution A obtained in the step (2), and then continuing stirring for 15 minutes to slowly dissolve the mixture to form a uniform mixed solution B;

(4) adding a surface active auxiliary agent into the mixed solution B obtained in the step (3), and continuously stirring for 15 minutes;

(5) finally, diethylene glycol isooctanoate benzoate was added and stirring was continued for 3 hours.