CN102643492A - Chlorinated high polymer with good heat stability and preparation method thereof - Google Patents
Chlorinated high polymer with good heat stability and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a chlorinated high polymer with good heat stability and a preparation method thereof. The chlorinated high polymer with good heat stability is prepared by mixing solvent lignin or derivatives of the solvent lignin which serves or serve as additives with high polymers such as polrvinyl chloride and chlorinated polyethylene which contain chlorine atoms in high polymer chain sections. The lignin additives used by the method come from natural high polymers without causing environment pollution and have low cost. The prepared chlorinated high polymer composite material has good heat-resistant stability. The lignin additives are suitable for Polymer processing technologies such as hot pressing or plastic extrusion. Renewable resources can be fully utilized, and consumption of petroleum chemicals can be reduced, thereby having remarkable economic and social benefits.
Description
Technical field
The invention belongs to novel material exploitation and preparation field, more specifically relate to chlorinated high polymers of a kind of good thermal stability and preparation method thereof.
Background technology
Chlorinated high polymers is in polymer segment, to contain chlorine bond thing, and like SE, chlorinatedpolyethylene etc. are the right and wrong macromolecular material of usefulness usually all.SE (PVC) is the polymkeric substance that is formed by polymerization of vinyl choride monomer, has fire-retardant, weather-proof, anticorrosion, anti-water and advantages such as chemical corrodibility, better comprehensive mechanical property and electrical insulation capability, and shortcoming is that thermostability and shock resistance are relatively poor.Chlorinatedpolyethylene is the polymkeric substance that Vilaterm produces through the perchlorizing substitution reaction.Different according to physicals with purposes; Chlorinatedpolyethylene can divide the chlorinatedpolyethylene of modifier type and the chlorinatedpolyethylene two big classes of rubber modifier type; Chlorinatedpolyethylene has many advantages such as intensity height, good springiness, fire-retardant, the anti-solvent of oil resistant, in macromolecule resin and modified rubber, extensively is applied.
But these chloride superpolymer are in the course of processing; Deviate from hydrogenchloride easily during in heating or in sulfuration (non-peroxide vulcanizing system), therefore need add stablizer, like calcium stearate with absorption acid in the chloride superpolymer course of processing; Barium stearate; Lead sulfate tribasic or Natural manganese dioxide, these thermo-stabilizer effects are desirable not enough, need further to improve.
The solvent-borne type xylogen is to extract or from the residue of biomass enzymolysis refining preparation bio-natural gas, functional polysaccharide or bio-ethanol, biological butanol, extract with upright the connecing of solvent method for biologically; Whole leaching process all is under gentle relatively condition, to carry out; Many functional groups that natural lignin is contained like phenolic hydroxyl group, alcoholic extract hydroxyl group and methoxyl group etc., are all kept preferably; Foreign matter content is low; Narrow molecular weight distribution, chemically reactive is strong, and the solvent-borne type xylogen has higher using value than products such as the calcium lignin sulphonate of traditional paper industry or alkali lignins.
Exist the interaction of proton donor and receptor between xylogen and PVC or the chlorinatedpolyethylene, both consistencies are better.This interaction possibly be on the lignin molecule carbonyl, hydroxyl respectively with PVC and chlorinatedpolyethylene molecule on Wasserstoffatoms, chlorine atom interact.Methoxyl group in the lignin structure on Syringa oblata Lindl. based structures unit, the phenyl ring has formed sterically hindered to hydroxyl, this hindered phenol structure can capturing free radicals and the terminating chain reaction.PVC and chlorinatedpolyethylene Chang Zuowei exterior material; But it is heat-resisting, photooxidation aging property is poor, under the effect of light and heat, can produce radical generation dehydrochlorination reaction, therefore; The adding of xylogen is Mulberry Extract effectively, improves light, the thermostability of PVC or chlorinatedpolyethylene.
The preparation of lignin derivative is according to the patent of invention of Cheng Xiansu: the preparation of high boiling point alcohol lignin polyurethane, national inventing patent ZL 200510018126.2; A kind of enzymatic hydrolysis lignin epoxide resin and preparation method thereof, national inventing patent ZL200810071746.6; High molecular compatible agent of a kind of lignin modification and preparation method thereof, national inventing patent ZL200910307008.1; Namely urea-formaldehyde modified lignin high molecular compatible additive and preparation method thereof (on December 1st, 2009) national inventing patent ZL200910310717.5.
Summary of the invention
The object of the present invention is to provide chlorinated high polymers of a kind of good thermal stability and preparation method thereof, the xylogen additive that the present invention uses derives from natural high polymer, does not produce environmental pollution; And cost is lower; The chlorinated high polymers matrix material that makes has good heat-resistant stability, is applicable to that hot pressing or injection moulding Process Technology of Polymer technology such as extrude, and can make full use of renewable resources; Can reduce the consumption of petroleum chemicals again, have remarkable economical and social benefit.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of chlorinated high polymers of good thermal stability, being to use solvent-borne type xylogen or its verivate is additive, modified chlorinated superpolymer obtains.
Described chlorinated high polymers is meant the superpolymer that in polymer segment, contains the chlorine atom, comprises SE, chlorinatedpolyethylene.
Described solvent-borne type xylogen is to adopt solvent method from the biomass material that contains lignin component, directly to extract or from wood chip; Bamboo, vegetation stalk fermentation prepare and extract the natural macromolecular material that obtains in the residue of ethanol, functional polysaccharide or bio-natural gas.
Described solvent-borne type lignin derivatives is namely urea-formaldehyde modified lignin, chlorlignin, lignin modification urethane or lignin modification epoxy resin.
A kind of preparation method of chlorinated high polymers of aforesaid good thermal stability may further comprise the steps:
(1) the chlorinated high polymers powder is in advance at 90-100 ℃ of following dry 20-24h;
(2) take by weighing 100 parts of chlorinated high polymers powder, 5-25 part solvent-borne type xylogen or its verivate and 1-6 part calcium stearate, Zinic stearas or barium stearate; Put into high-speed mixer high speed pre-mixing 5-10 min, then add 2-8 part softening agent mixed at high speed 5-15min once more; Described softening agent is phthalic ester or aliphatic dibasic acid;
(3) compound is placed carry out mixingly in two roller mills, two roll temperatures of mill are 140-150 ℃; Treat mixing evenly after, slice; It is preheating 5-15min on 150-160 ℃ the vulcanizing press that the compressing tablet Standard Module places temperature in advance; The sheet material of cutting out is put into mould, preheating 5-15min; Be forced into 12-15MPa, pressurize 1-3min, venting, so triplicate; Last pressurize 3-5 min takes out mould and colds pressing, and the time is 10-15 min, promptly makes the chlorinated high polymers of good thermal stability.
Beneficial effect of the present invention:
(1) the solvent-borne type xylogen that adopts of the present invention is the xylogen that directly extracts or from biorefinery prepares the residue of bio-natural gas, functional polysaccharide or biological alcohol, adopt the solvent method separation and Extraction from biomass material with solvent method; Leaching process does not pass through operations such as high temperature, high pressure; The chemically reactive that has kept natural lignin preferably; The xylogen purity that obtains is high, and its ash oontent is less than 3%, the calcium lignin sulphonate or the alkali lignin that obtain well below paper industry.The raw material of solvent-borne type xylogen can utilize the waste residue of agriculture and forestry organic waste material or biomass refining industry, and manufacturing cost is lower, can effectively utilize these wastes again simultaneously, helps environment protection.
(2) carbonyl on the lignin molecule, hydroxyl interact respectively at the Wasserstoffatoms on PVC and the chlorinatedpolyethylene molecule, chlorine atom.Methoxyl group in the lignin structure on Syringa oblata Lindl. based structures unit, the phenyl ring has formed sterically hindered to hydroxyl, this hindered phenol structure can capturing free radicals and the terminating chain reaction.PVC and chlorinatedpolyethylene Chang Zuowei exterior material; But it is heat-resisting, photooxidation aging property is poor; Under the effect of light and heat, can produce radical generation dehydrochlorination reaction; Therefore, the adding of xylogen is Mulberry Extract effectively, improves light, the thermostability of chlorinated high polymers such as PVC or chlorinatedpolyethylene.And xylogen itself is a kind of polymer of three-dimensional structure, in chlorinated high polymers, is difficult for taking place the transport phenomena that some low molecule properties-correcting agent often have as a kind of macromolecule modifier, forms the chlorinated high polymers matrix material of good thermal stability.
Description of drawings
Fig. 1 is the material modified preparation technology's flow process of xylogen thermo-stabilizer.
Embodiment
Raw material and plant and instrument:
SE merges the 5 type resins that chemical industry ltd provides by the Wuhu, and chlorinatedpolyethylene is merged the chlorinated polyethylene resin of 135 types that chemical industry ltd provides by the Wuhu; Enzymolysis xylogen, urea-formaldehyde-modified enzymolysis xylogen is according to method (separating and extracting method of patent of invention enzymolysis xylogen, national inventing patent ZL200510099747.8 that patent proposed; The preparation of namely urea-formaldehyde modified lignin high molecular compatible additive and application, national inventing patent ZL 200910310717.5) be equipped with by Shandong dragon Lik-Sang thing science and technology joint-stock company; High-boiling alcohol lignin, according to method (preparation method of high-boiling alcohol lignin epoxy resin, the national inventing patent ZL200410061295.X) preparation that patent proposed, calcium lignin sulphonate: the paper mill, Guangzhou provides; Alkali lignin is provided by Shandong spring woods paper industry company; Calcium-zinc stabilizer is the technical grade product of German bear board, and the Witcizer 300 softening agent is that traditional Chinese medicines reagent company provides;
The preparation flow of the chlorinated high polymers material of good thermal stability: PVC or chlorinatedpolyethylene powder be dry 20-24h under 100 ℃ in advance; Earlier put into high-speed mixer high speed pre-mixing 5-10 min, then add a certain amount of softening agent mixed at high speed once more with 100 parts of PVC or chlorinatedpolyethylene powder, 5-25 part solvent-borne type xylogen with after other processing aids take by weighing by prescription in right amount.After mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140-150 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5-15min on 150-160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5-15min.Be forced into 12-15MPa then, pressurize 1-3 min, venting, so triplicate; Last pressurize 3-5 min takes out mould and colds pressing, and the time is 10-15min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used, whole process flow is shown in figure-1.
The tensile property test is tested 5 samples for every group with reference to GB ∕ T1040.1-2006 plastic tensile performance test methods, and test result is the MV after removal peak and the minimum value.The impact property test is with reference to GB ∕ T1043.1-2008 plastics simple beam impact property TP, and test result is the MV of 10 samples.Thermostability adopts congo red method.
Congo red method is a kind of effective evaluation method of SE and chlorinatedpolyethylene thermostability.This test is with reference to GB/T 2917.1-2002 thermal stability of polyvinyl chloride testing method-congo red method and pH method.In still air, sample is maintained in 180 ± 1 ℃ of oil bath pans, measure congo-red test paper color change that the hydrogenchloride decomposite causes the sample top required time when being equivalent to pH=3, this time is heat-stable time.2 values of each sample test, averaged in the data useful range.
The main laboratory apparatus of table 1
Embodiment 1.Add high-boiling alcohol lignin as the SE thermal stabilization modifying agent
The PVC powder is dry 24h under 100 ℃ in advance; Take by weighing 200 gram PVC powder, 20 grams in advance 80 ℃ high-boiling alcohol lignin and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 8 min down; After the mixing; Mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 2 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
Embodiment 2.Add enzymolysis xylogen as the SE thermal stabilization modifying agent
The PVC powder is in advance at 100 ℃ of following dry 24h, take by weighing 200 gram PVC powder, 30 grams in advance 80 ℃ enzymolysis xylogen and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 8 min down.After the mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 3 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
Embodiment 3.Add high-boiling alcohol lignin as the chlorinatedpolyethylene thermal stabilization modifying agent
The chlorinatedpolyethylene powder is in advance at 100 ℃ of following dry 24h, take by weighing 200 gram PVC powder, 40 grams in advance 80 ℃ high-boiling alcohol lignin and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 8 min down.After the mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 1 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
Embodiment 4.Add enzymolysis xylogen as the chlorinatedpolyethylene thermal stabilization modifying agent
The chlorinatedpolyethylene powder is in advance at 100 ℃ of following dry 24h, take by weighing 200 gram PVC powder, 30 grams in advance 80 ℃ enzymolysis xylogen and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 8 min down.After the mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 2 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
Embodiment 5.Add urea-formaldehyde-modified enzymolysis xylogen as the chlorinatedpolyethylene thermal stabilization modifying agent
The PVC powder is in advance at 100 ℃ of following dry 24h, take by weighing 200 gram PVC powder, 20 grams in advance 80 ℃ urea-formaldehyde-modified enzymolysis xylogen and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 10 min down.After the mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 145 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 2 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
Embodiment 6.Add urea-formaldehyde-modified enzymolysis xylogen as the chlorinatedpolyethylene thermal stabilization modifying agent
The chlorinatedpolyethylene powder is dry 24h under 100 ℃ in advance; Take by weighing 200 gram PVC powder, 20 grams in advance 80 ℃ down urea-formaldehyde-modified enzymolysis xylogen and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h put into high-speed mixer high speed pre-mixing 10 min, then add a certain amount of softening agent mixed at high speed once more.After mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 145 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 1 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
Comparative example 1. does not add the SE print of xylogen stablizer
Polyvinyl chloride powder is dry 24h under 100 ℃ in advance; Take by weighing 200 gram PVC powder and 4 gram calcium-zinc stabilizers, 40 gram Witcizer 300 softening agent are put into high-speed mixer high speed pre-mixing 10 min, then add a certain amount of softening agent mixed at high speed once more.After mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 145 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 2 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
Comparative example 2. does not add the chlorinatedpolyethylene print of xylogen stablizer
The chlorinatedpolyethylene powder is dry 24h under 100 ℃ in advance; Take by weighing 200 gram chlorinatedpolyethylenees and 4 gram calcium-zinc stabilizers, 40 gram Witcizer 300 softening agent are put into high-speed mixer high speed pre-mixing 10 min, then add a certain amount of softening agent mixed at high speed once more.After mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 145 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 2 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
The comparative example 3.Add calcium lignin sulphonate, as the SE thermal stabilization modifying agent
The PVC powder is dry 24h under 100 ℃ in advance; Take by weighing 200 gram PVC powder, 20 grams in advance 80 ℃ calcium lignin sulphonate and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 8 min down; After the mixing; Mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 2 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
The comparative example 4.Add calcium lignin sulphonate, as the chlorinatedpolyethylene thermal stabilization modifying agent
The chlorinatedpolyethylene powder is in advance at 100 ℃ of following dry 24h, take by weighing 200 gram PVC powder, 20 grams in advance 80 ℃ calcium lignin sulphonate and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 8 min down.After the mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 2 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
The comparative example 5.Add alkali lignin as the SE thermal stabilization modifying agent
Polyvinyl chloride powder is in advance at 100 ℃ of following dry 24h, take by weighing 200 gram PVC powder, 20 grams in advance 80 ℃ alkali lignin and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 8 min down.After the mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 3 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
The comparative example 6.Add alkali lignin as the chlorinatedpolyethylene thermal stabilization modifying agent
The chlorinatedpolyethylene powder is in advance at 100 ℃ of following dry 24h, take by weighing 200 gram PVC powder, 20 grams in advance 80 ℃ alkali lignin and 4 gram calcium-zinc stabilizers, the 40 gram Witcizer 300 softening agent of dry 24h are put into high-speed mixer high speed pre-mixing 8 min down.After the mixing, mixture placed carry out mixingly in two roller mills, two roll temperatures of mill are 140 ℃.Treat mixing evenly after, slice.Sheet material is cut into the size of compressing tablet Standard Module inner chamber, and it is preheating 5 min on 160 ℃ the vulcanizing press that mould places temperature in advance.Then sheet material is put into mould, preheating 5min.Be forced into 15MPa then, pressurize 3 min, venting, so triplicate; Last pressurize 3 min take out mould and cold pressing, and the time is 10 min.At last the standard typing sheet material that obtains is cut into the tensile bars and impact batten that the test mechanical property is used.
Table 2 embodiment and comparative example's print mechanical property and heat stability testing result
Embodiment and comparative example's prototype test result shows; Not adding the SE or the chlorinatedpolyethylene of xylogen compares; The thermostability of adding the chlorinated high polymers of high-boiling alcohol lignin or enzymolysis xylogen and verivate thereof all has the lifting of highly significant; The resistance position phenol type molecular structure that the solvent-borne type xylogen is described is for suppressing thermolysis; The thermostability that improves chlorine-containing polymer plays an important role; And add calcium lignin sulphonate or the SE of alkali lignin or the effect that chlorinatedpolyethylene does not improve the chlorine-containing polymer thermostability, its major cause is natural lignin's boiling under the high-temperature and high-pressure conditions of traditional paper-making process process sulphite or strong base solution, has destroyed the molecular structure of xylogen; Many active functions are rolled into a ball and are disappeared, even add the thermostability that also can't promote chlorine-containing polymer in the chloride superpolymer to.Owing to contain polar group in xylogen and the verivate thereof; They with chlorinated high polymers in the chlorine atomic polarity close; Add xylogen or its derivative modified chlorinated high polymers mechanical property; In certain addition scope, make moderate progress, the present invention can bring into play good effect to the modification of chloride superpolymer.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (5)
1. the chlorinated high polymers of a good thermal stability, it is characterized in that: it is additive that the chlorinated high polymers of described good thermal stability is to use solvent-borne type xylogen or its verivate, and modified chlorinated superpolymer obtains.
2. the chlorinated high polymers of good thermal stability according to claim 1, it is characterized in that: described chlorinated high polymers is meant the superpolymer that in polymer segment, contains the chlorine atom, comprises SE, chlorinatedpolyethylene.
3. the chlorinated high polymers of good thermal stability according to claim 1; It is characterized in that: described solvent-borne type xylogen is to adopt solvent method from the biomass material that contains lignin component, directly to extract or from wood chip; Bamboo, vegetation stalk fermentation prepare and extract the natural macromolecular material that obtains in the residue of ethanol, functional polysaccharide or bio-natural gas.
4. the chlorinated high polymers of good thermal stability according to claim 1, it is characterized in that: described solvent-borne type lignin derivatives is namely urea-formaldehyde modified lignin, chlorlignin, lignin modification urethane or lignin modification epoxy resin.
5. the preparation method of the chlorinated high polymers of a good thermal stability as claimed in claim 1, it is characterized in that: described preparation method may further comprise the steps:
(1) the chlorinated high polymers powder is in advance at 90-100 ℃ of following dry 20-24h;
(2) take by weighing 100 parts of chlorinated high polymers powder, 5-25 part solvent-borne type xylogen or its verivate and 1-6 part calcium stearate, Zinic stearas or barium stearate; Put into high-speed mixer high speed pre-mixing 5-10 min, then add 2-8 part softening agent mixed at high speed 5-15min once more; Described softening agent is phthalic ester or aliphatic dibasic acid;
(3) compound is placed carry out mixingly in two roller mills, two roll temperatures of mill are 140-150 ℃; Treat mixing evenly after, slice; It is preheating 5-15min on 150-160 ℃ the vulcanizing press that the compressing tablet Standard Module places temperature in advance; The sheet material of cutting out is put into mould, preheating 5-15min; Be forced into 12-15MPa, pressurize 1-3min, venting, so triplicate; Last pressurize 3-5 min takes out mould and colds pressing, and the time is 10-15 min, promptly makes the chlorinated high polymers of good thermal stability.
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| CN103897295B (en) * | 2014-03-06 | 2016-08-24 | 华南理工大学 | A kind of biomass PVC composite and preparation method thereof |
| CN116444907A (en) * | 2023-06-15 | 2023-07-18 | 山东恒旺新材料科技有限公司 | Chlorinated polyethylene waterproof coiled material |
| CN116444907B (en) * | 2023-06-15 | 2023-08-18 | 山东恒旺新材料科技有限公司 | Chlorinated polyethylene waterproof coiled material |
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Application publication date: 20120822 |