CN1687280A - New type hot-melt adhesive and preparation method thereof - Google Patents
New type hot-melt adhesive and preparation method thereof Download PDFInfo
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- CN1687280A CN1687280A CN 200510040380 CN200510040380A CN1687280A CN 1687280 A CN1687280 A CN 1687280A CN 200510040380 CN200510040380 CN 200510040380 CN 200510040380 A CN200510040380 A CN 200510040380A CN 1687280 A CN1687280 A CN 1687280A
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Abstract
The present invention relates to a new-type thermosol using attapulgite as additive and its preparation method. Its composition includes: main body resin ethylene and polyvinyl acetate copolymer EVA, etc. 20-50%, tackifying resin 20-50%, diluent 10-30%, attapulgite 2-40% and anti-oxidant 0.1-1%. Its preparation method includes the following steps: firstly, melting diluent, adding main body resin, when the main body resin basically molten, progressively adding tackifying resin and making reaction for 0.5-1.5 h at 130-180 deg.C, then adding attapulgite and anti-oxidant, further reacting for 0.5-1 hr., discharging material, forming and granulating so as to obtain the invented product.
Description
Technical field
The present invention relates to a kind of with recessed soil as new type hot-melt adhesive of compound and preparation method thereof.
Background technology
Ethylene-vinyl acetate copolymer (EVA) based hot melt adhesive can be widely used in civil areas such as bookbinding, automatic packaging production line, carpet backing.Along with the raising of production automation degree, the demand of this product is also increasing.
This product is made up of raw materials such as matrix resin, tackifying resin, thinners, and its cost is higher relatively.One of means that reduce cost are to add some fillers in component, filler commonly used is: lime carbonate, silicon powder, talcum powder, white carbon black, the white carbon black of lightweight, metal nitride, metal oxide etc., but the shortcoming of these fillers is or than great, easily sink to the bottom, disperse bad, or too expensive.As United States Patent6,750,55 have provided a kind of semi-conductive tackiness agent that is used for, and wherein contain metal nitride, metal oxide.
Recessed soil, full name attapulgite (Attapulgite) are the fibrous magnesia silicate of waterbearing stratum chain, and only a few countries or area produce such mineral reserve in the world at present.It is abundant that recessed native reserves are economized in China Jiangsu, Anhui etc.Because it has good physical properties and particular structure feature, therefore show as good colloidal property, absorption property and catalytic performance.Extensively be used as sorbent material, loading material of rubber, drilling mud, catalyzer and molecular sieve caking agent, thickening material etc.CN1187461A has provided the deep processing technology of the recessed soil of a kind of high stick, and made recessed soil has designed a kind of with the recessed soil compensation of surface modification elastomeric material technology as the caking agent in the molecular sieve preparation: CN1508197A; United States Patent 6,863,984 is used for the surface of vehicle radiator with recessed soil, plays adsorption to reduce environmental pollution; United States Patent 6,846,358 is used as recessed soil the caking agent of fire door inner layer material.But its application in the hotmelt field does not appear in the newspapers.
Summary of the invention
The objective of the invention is recessed soil is added in the hotmelt, a kind of new type hot-melt adhesive and preparation method thereof is provided, under the situation that other performances of assurance do not reduce, tackify, gain in strength, reduce cost.
Hot melt adhesive of the present invention is formed: matrix resin: 20-50%: tackifying resin: 20-50%; Thinner: 10-30%: recessed soil: 2-40%; Oxidation inhibitor: 0.1-1%.
Described matrix resin is ethene and vinyl acetate copolymer eva, or any one or more combination among itself and ethene and butyl acrylate copolymer EMA, ethene one acrylic copolymer EAA, ethylene ethyl acrylic copolymer EEA, vinylbenzene and isoprene copolymer SIS, copolymer from styrene and butadiene SBS, the amorphous alpha-olefin polymers APAO adds, wherein the VA% of matrix resin is 5-40, and melting index is 15-400.
Described tackifying resin can be rosin, polymerized rosin, 145 resins, 138 resins, terpine resin, petroleum resin or hydrogenated petroleum resin;
Described thinner can be paraffin, ceresine, polyethylene wax, Fischer-Tropsch wax;
Described recessed soil is former recessed soil or the recessed soil of viscosity, brighten modified attapulgites such as recessed soil;
Described oxidation inhibitor is 264 (2,6-di-tert-butyl-4-methy phenol) or 1010{ four [β-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester }
Preparation method of the present invention is:
At first with the thinner fusing, add matrix resin then, treat to add gradually when matrix resin melts substantially tackifying resin, add recessed soil and oxidation inhibitor behind the reaction 0.5-1.5h down at 130-180 ℃, react the 0.5-1h discharging again, moulding, granulation get product of the present invention.
Advantage of the present invention is:
1, adds recessed soil and can reduce product cost significantly;
2, add recessed soil and can improve product viscosity and softening temperature;
3, add recessed soil and can increase the product bonding strength;
4, add recessed soil and add other fillers and compare, its suspension is good, does not precipitate, and viscosity is big, easily is uniformly dispersed, and helps the hot melt adhesive performance and improves.
Embodiment
The basic product of preparation embodiment 1~8:
Paraffin with 10%, 9.8% ceresine melts, and adds 35% EVA then, treats to add 45%145 gradually when EVA melts substantially
#Tackifying resin, 1010 oxidation inhibitor of adding 0.2% react the 0.5h discharging again behind reaction 1h under 150 ℃, get basic product.
Embodiment 1: get 95 parts of above-mentioned basic products, add former recessed native 5 parts and form.
Embodiment 2~5:
In preparation with embodiment 1, former recessed soil changed into brighten recessed soil, make its content be respectively 5%, 10%, 15%, 20%.
Product proportioning and the test result of embodiment 2~5 see Table 1:
Product proportioning and the test result of table 1 embodiment 2~5
Embodiment | Basic product | ?1 | ?2 | ?3 | ?4 | ?5 |
Brighten recessed soil amount (w%) | 0 | ?5 | ?5 | ?10 | ?15 | ?20 |
Softening temperature (℃) | 74.0 | ?75.0 | ?75.0 | ?75.0 | ?75.5 | ?75.5 |
Viscosity (mPaS/170 ℃) | 3500 | ?5000 | ?4500 | ?4800 | ?5400 | ?5800 |
Bonding strength (MPa) | 3.30 | ?3.38 | ?4.84 | ?4.21 | ?4.10 | ?3.83 |
Embodiment 6~8:
In aforesaid basic product, add the recessed soil of viscosity, make its content be respectively 5%, 10%, 20%.Product proportioning and the test result of embodiment 6~8 see Table 2:
Product proportioning and the test result of table 2 embodiment 6~8
Embodiment | Basic product | ?6 | ?7 | ?8 |
The recessed soil amount of tackify (w%) | 0 | ?5 | ?10 | ?20 |
Softening temperature (℃) | 74.0 | ?75 | ?76.5 | ?77.5 |
Viscosity (mPaS/170 ℃) | 3500 | ?5300 | ?5500 | ?7400 |
Bonding strength (MPa) | 3.30 | ?4.61 | ?4.61 | ?4.46 |
Embodiment 9:
Ceresine fusing with 9.8%, add 12% EVA, 3% APAO and 15% SIS then, the Gum Rosin that adds 7% terpenes tackifying resin and 20% when treating to melt substantially gradually adds 0.2% 2.6.4 oxidation inhibitor down behind the reaction 1h at 150 ℃, add 33% gradually and brighten recessed soil, react the 0.5h discharging again.
Embodiment 10:
Press embodiment 9 operations, wherein brightening recessed native dosage is 20%.
Comparative Examples
Press embodiment 9 operations, will wherein brighten recessed soil and change talcum powder into.
The test result that embodiment 8-9, Comparative Examples reach with kind import glue sample sees Table 3
Index | Softening temperature (℃) | Viscosity (mPaS/170 ℃) | Bonding strength (MPa) |
Comparative Examples | ?80 | ??5000 | ?2.34 |
Embodiment 9 | ?94 | ??15500 | ?2.63 |
Embodiment 10 | ?86 | ??6500 | ?2.74 |
Import glue sample | ?86 | ??6300 | ?2.48 |
Claims (3)
1. a new type hot-melt adhesive is characterized in that its component is: matrix resin: 20-50%; Tackifying resin: 20-50%; Thinner: 10-30%; Recessed soil: 2-40%; Oxidation inhibitor: 0.1-1%;
Wherein said matrix resin is ethene and vinyl acetate copolymer eva, or among itself and ethene and butyl acrylate copolymer EMA, ethene one acrylic copolymer EAA, ethylene ethyl acrylic copolymer EEA, vinylbenzene and isoprene copolymer SIS, copolymer from styrene and butadiene SBS, the amorphous alpha-olefin polymers APAO any one or more combines;
Described tackifying resin is rosin, polymerized rosin, 145 resins, 138 resins, terpine resin, petroleum resin or hydrogenated petroleum resin;
Described thinner is paraffin, ceresine, polyethylene wax, Fischer-Tropsch wax;
Described recessed soil is original soil or modified attapulgite: the recessed soil of viscosity, brighten recessed soil, the recessed soil of acidifying;
Described oxidation inhibitor is 2, i.e. 264 or four [β-(3 ', the 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester promptly 1010 of 6-di-tert-butyl-4-methy phenol.
2. a kind of new type hot-melt adhesive according to claim 1, the VA% that it is characterized in that described matrix resin is 5-40, melting index is 15-400.
3. the method for preparing the described new type hot-melt adhesive of claim 1, it is characterized in that above-mentioned raw materials, at first thinner is melted, add matrix resin then, treat to add gradually when matrix resin melts substantially tackifying resin, add recessed soil and oxidation inhibitor behind the reaction 0.5-1.5h down at 130-180 ℃, react the 0.5-1h discharging again, moulding, granulation form.
Priority Applications (1)
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CNB2005100403802A CN1304512C (en) | 2005-06-03 | 2005-06-03 | New type hot-melt adhesive and preparation method thereof |
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CNB2005100403802A CN1304512C (en) | 2005-06-03 | 2005-06-03 | New type hot-melt adhesive and preparation method thereof |
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CN1687280A true CN1687280A (en) | 2005-10-26 |
CN1304512C CN1304512C (en) | 2007-03-14 |
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