CN114106562A - Bagged silicon rubber product vulcanizing agent and preparation method thereof - Google Patents

Bagged silicon rubber product vulcanizing agent and preparation method thereof Download PDF

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Publication number
CN114106562A
CN114106562A CN202111247594.2A CN202111247594A CN114106562A CN 114106562 A CN114106562 A CN 114106562A CN 202111247594 A CN202111247594 A CN 202111247594A CN 114106562 A CN114106562 A CN 114106562A
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vulcanizing agent
bagged
packaging
silicone rubber
rubber
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CN114106562B (en
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郑淼
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Dongguan Shengxin Silica Gel Technology Co ltd
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Dongguan Shengxin Silica Gel Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04Polysiloxanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

Abstract

The invention discloses a bagged vulcanizing agent for a silicon rubber product, which consists of the following raw materials in percentage by weight: 10 to 30 percent of methyl vinyl silicone rubber; 55 to 70 percent of di-tertiary butyl peroxide; 10 to 20 percent of high hydrogen-containing silicone oil; 1 to 5 percent of ATBC plasticizer. The invention greatly reduces the adding proportion of the methyl vinyl silicone rubber, reduces the cost of the vulcanizing agent, reduces the whole volume, has fewer contact points with static electricity generated in the rubber mixing process, reduces the probability of easy ignition in the rubber mixing process, has thinner vulcanizing agent, can be filled into a small-capacity packaging bag for use, is very convenient to use, can save the cost on packaging, has longer storage time, is convenient to package and transport, reduces the transport cost, and has better economic benefit and wide application prospect.

Description

Bagged silicon rubber product vulcanizing agent and preparation method thereof
Technical Field
The invention relates to the technical field of vulcanizing agents for silicone rubber products, in particular to a bagged vulcanizing agent for silicone rubber products and a preparation method thereof.
Background
The silica gel industry in China develops rapidly in recent years, has wide prospects, is a trillion yuan market in the field of silica gel manufacturing, particularly, the price of the organosilicon material rises greatly under the current conditions of energy conservation and emission reduction, environmental protection and safety strict investigation in the world at present, and the current situation that the raw materials cannot be bought with money is achieved.
However, most of the most basic formulations of silica gel vulcanizing agents (also called bridging agents) currently used in the market adopt 50% or more of methyl vinyl silicone rubber, and the addition amount of the methyl vinyl silicone rubber is large, so that the vulcanizing agents have the following defects: 1. the cost is greatly improved, and the volume is increased, so that more contact points with static electricity generated in the rubber mixing process can be provided, and the probability of ignition in the rubber mixing process can be improved; 2. the vulcanizer is more thick, generally can only deposit with the plastic bucket, need directly grab the interpolation with the hand during use, can't fill the use in the encapsulation bag of small capacity, uses inconveniently, moreover, all adopts the plastic bucket of 15 kilograms or 20 kilograms dress to deposit the vulcanizer on the existing market, and is bulky, and the packing transportation is inconvenient, and the cost of transportation is high.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a bagged vulcanizing agent for a silicone rubber product and a preparation method thereof.
In order to achieve the above purpose, a first aspect of the present invention provides a bagged vulcanizing agent for silicone rubber products, the vulcanizing agent is filled into an encapsulating rubber bag for sealed packaging, and the vulcanizing agent is composed of the following raw materials by weight:
Figure RE-GDA0003479162410000021
preferably, the vulcanizing agent is composed of the following raw materials in percentage by weight:
Figure RE-GDA0003479162410000022
preferably, the methyl vinyl silicone rubber is prepared by oxidation copolymerization of disiloxane and vinyl silicon.
Preferably, the ATBC plasticizer is acetyl tributyl citrate, which is polymerized by citric acid and n-butanol under the action of a catalyst.
Preferably, the amount of vulcanizing agent filled in each bag of packaging adhesive is 150 g.
Preferably, the packaging plastic bag is a composite film plastic bag with two heat-sealed ends and hollow inside or a composite film plastic bag with two heat-sealed ends and hollow inside and side edges.
The invention provides a preparation method of a vulcanizing agent for a bagged silicon rubber product, which comprises the following steps:
(1) kneading methyl vinyl silicone rubber, di-tert-butyl peroxide, high hydrogen silicone oil and ATBC plasticizer together by using an internal mixer to form a vulcanizing agent;
(2) and filling a vulcanizing agent into the packaging rubber bag for sealing and packaging.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a safe and environment-friendly novel concentrated silicon rubber product vulcanizing agent, which greatly reduces the adding proportion of methyl vinyl silicon rubber, reduces the cost of the vulcanizing agent, reduces the whole volume, reduces fewer contact points with static electricity generated in the rubber mixing process, reduces the probability of easy ignition in the rubber mixing process, and in addition, the vulcanizing agent prepared in the way can be thinner, can be filled into a small-volume packaging bag for use, does not need to be stored by a plastic barrel, only needs to cut a small opening on the packaging bag during use, is added like squeezing toothpaste, is very convenient to use, avoids the problem that the existing vulcanizing agent can only be grabbed and added in the plastic barrel by hand, and has better economic benefit and wide application prospect.
2. The invention adopts a packaging method of filling small-capacity packaging bags, can save the cost on packaging, has longer storage time, can be packaged by paper boxes after the filling and the packaging of the packaging bags are finished, has greatly reduced volume, is convenient for packaging and transportation, and reduces the transportation cost.
3. The methyl vinyl silicone rubber of the invention is used as a carrier in a vulcanizing agent and plays a role of a filler, the di-tert-butyl peroxide plays a main vulcanization role in the vulcanizing agent, the high-hydrogen silicone oil plays a role in yellowing resistance in the vulcanizing agent, and the ATBC plasticizer plays a role in improving the fluidity and light stability of the silicone rubber material and is convenient for demoulding of products.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a bagged vulcanizing agent for silicone rubber products provided by embodiments of the invention;
fig. 2 is a schematic structural diagram of a second adhesive packaging bag according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
Referring to fig. 1, a curing agent for a pocketable silicone rubber product is shown, wherein the curing agent is filled into an encapsulating rubber bag for sealing and packaging, and the curing agent can be composed of the following raw materials in percentage by weight: 10 to 30 percent of methyl vinyl silicone rubber; 55 to 70 percent of di-tertiary butyl peroxide; 10 to 20 percent of high hydrogen-containing silicone oil; 1 to 5 percent of ATBC plasticizer.
Wherein, the methyl vinyl silicone rubber can be prepared by oxidation copolymerization of disiloxane and vinyl silicone. The methyl vinyl silicone rubber is used as a carrier in a vulcanizing agent and plays a role of a filler.
The di-tertiary butyl peroxide can be used as an initiator, is colorless to yellowish transparent liquid, is insoluble in water, has strong oxidizing property, is inflammable, is stable at normal temperature, is insensitive to impact, and plays a main vulcanization role in a vulcanizing agent.
The high hydrogen-containing silicone oil plays a role in resisting yellowing in a vulcanizing agent.
The ATBC plasticizer can be acetyl tributyl citrate, which is polymerized by citric acid and n-butyl alcohol under the action of a catalyst. The ATBC plasticizer has the function of improving the fluidity and the light stability of the silicon rubber material in the vulcanizing agent, and is convenient for demoulding of products.
The preparation method of the vulcanizing agent for the silicone rubber product comprises the following steps:
(1) kneading methyl vinyl silicone rubber, di-tert-butyl peroxide, high hydrogen silicone oil and ATBC plasticizer together by using an internal mixer to form a vulcanizing agent;
(2) and filling a vulcanizing agent into the packaging rubber bag for sealing and packaging.
Preferably, the amount of vulcanizing agent filled in each packaging rubber bag can be set to be 150g, which can be the addition amount of vulcanizing agent of 20 kg of silicon rubber. As shown in fig. 1, the packaging plastic bag may be a composite film plastic bag with two ends heat-sealed and a hollow interior. As shown in fig. 2, the packaging plastic bag can also be a composite film plastic bag with two heat-sealed ends and side edges and a hollow interior.
Example 1
The embodiment 1 of the invention provides a bagged vulcanizing agent for a silicon rubber product, wherein the vulcanizing agent is filled into an encapsulating rubber bag for sealing and packaging, and the vulcanizing agent consists of the following raw materials in percentage by weight: 16% of methyl vinyl silicone rubber; 66% of di-tertiary butyl peroxide; 16% of high hydrogen-containing silicone oil; 2% of ATBC plasticizer.
Example 2
The embodiment 2 of the invention provides a bagged vulcanizing agent for a silicon rubber product, wherein the vulcanizing agent is filled into an encapsulating rubber bag for sealing and packaging, and the vulcanizing agent consists of the following raw materials in percentage by weight: 10% of methyl vinyl silicone rubber; di-tertiary butyl peroxide 70%; 19% of high hydrogen-containing silicone oil; 1% of ATBC plasticizer.
Example 3
The embodiment 3 of the invention provides a bagged vulcanizing agent for a silicon rubber product, wherein the vulcanizing agent is filled into an encapsulating rubber bag for sealing and packaging, and the vulcanizing agent consists of the following raw materials in percentage by weight: 30% of methyl vinyl silicone rubber; 55% of di-tertiary butyl peroxide; 10% of high hydrogen-containing silicone oil; 5% of ATBC plasticizer.
Example 4
The embodiment 4 of the invention provides a bagged vulcanizing agent for a silicon rubber product, wherein the vulcanizing agent is filled into an encapsulating rubber bag for sealing and packaging, and the vulcanizing agent consists of the following raw materials in percentage by weight: 20% of methyl vinyl silicone rubber; 60% of di-tertiary butyl peroxide; 17% of high hydrogen-containing silicone oil; 3% of ATBC plasticizer.
The novel concentrated silicon rubber product vulcanizing agent of the embodiment can save 20% -40% of cost, can also save 50% in the aspects of transportation and consumable materials, and is safer, more environment-friendly and more convenient to use. If a small-sized silica gel plant uses 5 tons of silica gel raw materials every day, 75 kilograms of vulcanizing agents are needed, and only 45-60 kilograms of vulcanizing agents of the novel concentrated silica gel product are needed, the market average price of each kilogram is 50 yuan, 15-30 kilograms saved by 50 yuan, 750-1500 yuan can be saved every day by the small-sized silica gel plant, according to statistics, more than 5000 tons of organosilicon materials consumed every day by the bead triangle are needed, 75 tons of vulcanizing agents needed to be used, if only 45-60 tons of novel concentrated silica gel product vulcanizing agents are needed, 15-30 tons of direct economic benefits saved by the bead triangle every day are 75-150 ten thousand yuan, and the novel concentrated silica gel product vulcanizing agent has good economic benefits and wide application prospects.
And only a small opening is cut on the packaging bag when the vulcanizing agent is used, the vulcanizing agent can be added like squeezing toothpaste, the use is very convenient, and the problem that the vulcanizing agent can only be grabbed in a plastic barrel by hands to be added like the existing vulcanizing agent is solved.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (7)

1. The vulcanizing agent for the silicon rubber product capable of being bagged is characterized by being filled into an encapsulating rubber bag for sealing and packaging, and the vulcanizing agent is composed of the following raw materials in percentage by weight:
Figure FDA0003321370200000011
2. the curing agent for the bagged silicon rubber products as claimed in claim 1, wherein the curing agent is prepared from the following raw materials in percentage by weight:
Figure FDA0003321370200000012
3. the vulcanizing agent for the bagged silicone rubber product according to claim 1 or 2, wherein the methyl vinyl silicone rubber is prepared by the oxidative copolymerization of disiloxane and vinyl silicone.
4. The vulcanizing agent for the bagged silicone rubber product as claimed in claim 1 or 2, wherein the ATBC plasticizer is acetyl tributyl citrate which is polymerized by citric acid and n-butanol under the action of a catalyst.
5. A vulcanizer for a pocketable silicone rubber product as set forth in claim 1, wherein each encapsulating bag is filled with a vulcanizer in an amount of 150 g.
6. The vulcanizing agent for the silicone rubber products capable of being bagged according to claim 1, wherein the packaging plastic bag is a composite film plastic bag with two ends heat-sealed and hollow inside or a composite film plastic bag with two ends heat-sealed and hollow inside.
7. A preparation method of the vulcanizing agent for the bagged silicon rubber product as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
(1) kneading methyl vinyl silicone rubber, di-tert-butyl peroxide, high hydrogen silicone oil and ATBC plasticizer together by using an internal mixer to form a vulcanizing agent;
(2) and filling a vulcanizing agent into the packaging rubber bag for sealing and packaging.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0368658A (en) * 1989-08-08 1991-03-25 Shin Etsu Chem Co Ltd Production of cured silicone rubber from organopolysiloxane composition and cured product
CN101157801A (en) * 2007-09-19 2008-04-09 上海回天化工新材料有限公司 Highly ripping-resistant high temperature sulfidation silicon rubber and method for making same
CN101538406A (en) * 2009-04-17 2009-09-23 天惠有机硅(深圳)有限公司 Formulation of silastic anti-yellowing vulcanizing agent and preparation method thereof
CN102775795A (en) * 2012-07-12 2012-11-14 中国恩菲工程技术有限公司 Peroxide vulcanized rubber
CN107523064A (en) * 2017-10-11 2017-12-29 惠州市臻晖电子有限公司 A kind of preparation method of high anti-yellowing containment vessel silica gel material and containment vessel
CN111727157A (en) * 2018-02-20 2020-09-29 凯文·M·奥尼尔 Lightweight transport, storage and delivery system
US20210061521A1 (en) * 2019-08-28 2021-03-04 Kevin E. Jacobs Mixing bag

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0368658A (en) * 1989-08-08 1991-03-25 Shin Etsu Chem Co Ltd Production of cured silicone rubber from organopolysiloxane composition and cured product
CN101157801A (en) * 2007-09-19 2008-04-09 上海回天化工新材料有限公司 Highly ripping-resistant high temperature sulfidation silicon rubber and method for making same
CN101538406A (en) * 2009-04-17 2009-09-23 天惠有机硅(深圳)有限公司 Formulation of silastic anti-yellowing vulcanizing agent and preparation method thereof
CN102775795A (en) * 2012-07-12 2012-11-14 中国恩菲工程技术有限公司 Peroxide vulcanized rubber
CN107523064A (en) * 2017-10-11 2017-12-29 惠州市臻晖电子有限公司 A kind of preparation method of high anti-yellowing containment vessel silica gel material and containment vessel
CN111727157A (en) * 2018-02-20 2020-09-29 凯文·M·奥尼尔 Lightweight transport, storage and delivery system
US20210061521A1 (en) * 2019-08-28 2021-03-04 Kevin E. Jacobs Mixing bag

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Title
ZI WEN CUI,等: "Systematic investigation on the effect of crosslinking agent type and dosage on the performance of TPU/MVQ based thermoplastic vulcanizates", 《JOURNAL OF APPLIED POLYMER SCIENCE》 *
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