阅读说明：本技术 一种高阻燃cpvc车用板材组合物及制备方法 (High-flame-retardant CPVC (chlorinated polyvinyl chloride) automotive plate composition and preparation method thereof ) 是由 李胜华 金胜波 王曙光 韩风 肖斌 孟祥昊 董军宁 杨林 于 2021-08-27 设计创作，主要内容包括：一种高阻燃CPVC车用板材组合物,按重量份计,包括：CPVC树脂80-95份、PVC树脂0-30、润滑剂1-5份、改性剂15-30份、加工助剂2-4份、热稳定剂1.3-3份、辅助稳定剂1.3-3份、填加剂3-6份；由本发明的高阻燃CPVC车用板材组合物制得的板材,氧指数为46%-53%,简支梁冲击强度为35-48.5KJ/㎡,维卡软化点温度为95.3-102.3℃,在185℃、60rpm/min的条件下,动态热稳定时间为23.8-28min。(A high flame retardant CPVC automotive board composition comprises the following components in parts by weight: 80-95 parts of CPVC resin, 0-30 parts of PVC resin, 1-5 parts of lubricant, 15-30 parts of modifier, 2-4 parts of processing aid, 1.3-3 parts of heat stabilizer, 1.3-3 parts of auxiliary stabilizer and 3-6 parts of additive; the plate prepared from the high-flame-retardant CPVC automotive plate composition has the advantages that the oxygen index is 46-53%, the impact strength of a simply supported beam is 35-48.5 KJ/square meter, the Vicat softening point temperature is 95.3-102.3 ℃, and the dynamic thermal stability time is 23.8-28min under the conditions of 185 ℃ and 60 rpm/min.)

1. The high-flame-retardant CPVC automotive plate composition is characterized by comprising the following components in parts by weight: 70-100 parts of CPVC resin, 0-50 parts of PVC resin, 1-8 parts of lubricant, 10-30 parts of modifier, 1-5 parts of processing aid, 1-10 parts of heat stabilizer, 1-5 parts of auxiliary stabilizer and 2-10 parts of additive.

2. The high flame retardant CPVC vehicular board composition according to claim 1, which comprises the following components in parts by weight: 80-95 parts of CPVC resin, 0-30 parts of PVC resin, 1-5 parts of lubricant, 15-30 parts of modifier, 2-4 parts of processing aid, 1.3-3 parts of heat stabilizer, 1.3-3 parts of auxiliary stabilizer and 3-6 parts of additive.

3. The highly flame retardant CPVC automotive plate composition as claimed in claim 2, wherein the CPVC resin is a resin prepared by an aqueous phase method, and has a polymerization degree of 700-1000, a chlorine content of more than 67%, a tensile strength of more than 50MPa and an average particle size of 120-140 μm.

4. The high flame retardant CPVC vehicular board composition according to claim 2, wherein the lubricant is one or more selected from the group consisting of paraffin wax, polyethylene wax, oxidized polyethylene wax, fischer-tropsch wax, ester wax, oxidized wax, stearic acid, calcium stearate, ethylene bis stearamide wax, and stearamide.

5. The high flame retardant CPVC vehicular board composition according to claim 2, wherein the modifier is one or more of impact-resistant CPE, impact-resistant ACR, MBS, ABS, AS, PMMA, HIPS.

6. The high flame retardant CPVC automotive panel composition according to claim 2, wherein the processing aid is acrylic processing aid, one or a combination of two of 201, 401, PA-20, PA-40 and PA-101.

7. The highly flame retardant CPVC automotive board composition as claimed in claim 2, wherein the heat stabilizer is one or more of methyl tin mercaptide, butyl tin mercaptide, dimethyl tin maleate, dibutyl tin maleate and calcium zinc composite stabilizer.

8. The highly flame retardant CPVC automotive board composition according to claim 2, wherein the auxiliary stabilizer is one or more of an antioxidant 1076, an antioxidant 1010, a phosphite ester, a tricosanol thiodipropionate epoxidized soybean oil, an epoxidized linseed oil and a beta diketone.

9. The highly flame retardant CPVC automotive board composition as claimed in claim 2, wherein the additive is one or more of titanium dioxide, calcium carbonate, talcum powder, hydrotalcite, antimony trioxide, magnesium hydroxide and aluminum hydroxide.

10. A preparation method of a high flame-retardant CPVC automotive plate composition is characterized by comprising the steps of putting CPVC resin, PVC resin, a lubricant, a modifier, a processing aid and an additive into a thermal mixing device in proportion to start stirring, controlling the initial temperature of the thermal mixing device to be 30-50 ℃, the stirring speed to be 200-plus-500 rpm, after stirring for 1-3min, adding a heat stabilizer and an auxiliary stabilizer, starting timing and heating, increasing the speed to be 450-plus-1000 rpm, the average heating rate to be 5-15 ℃/min, and discharging when the temperature is increased to be 110-plus-130 ℃;

and (3) starting cold mixing and stirring, wherein the stirring speed is 50-80rpm, immediately discharging the hot material into a cold mixer, cooling by using jacket cooling water and a built-in cooling accessory at the cooling speed of 3-10 ℃/min, and discharging and packaging when the temperature is reduced to 40-60 ℃ to obtain the high-flame-retardant CPVC automotive plate composition.

Technical Field

The invention relates to the technical field of chlorinated polyvinyl chloride, and particularly relates to a high-flame-retardant CPVC (chlorinated polyvinyl chloride) automotive board composition and a preparation method thereof.

Background

At present, the internal decoration of domestic and foreign vehicle (rail transit vehicles, new energy and fuel vehicles and the like) develops towards the direction of energy conservation, environmental protection, beauty, comfort and light weight, the plastic decorative plate is increasingly favored by the industry of the traffic vehicles due to the characteristics of excellent comprehensive performance, price advantage, easy processing, easy coloring, beauty, light weight, environmental protection and the like, the usage amount of the plastic decorative plate in the vehicle increases year by year, and the aims of replacing steel with plastic, replacing weight with light weight, saving resources and protecting environment are realized, but most of the prior color plastic decorative boards are produced by taking ABS resin, PC resin, PE resin, PP resin and the like as raw materials, however, although these resins have advantages such as high fluidity, easy plasticization, and wide processing temperature, they have poor flame retardancy and still cannot satisfy the current safety requirements in terms of flame retardancy.

The CPVC has good flame retardant property, and the problem that the interior plastic decorative plate with good flame retardant effect, stable processing, good ductility and wide processing temperature range is urgently needed to be solved is developed by utilizing the excellent property of the CPVC.

Disclosure of Invention

The invention aims to provide a high-flame-retardant CPVC (chlorinated polyvinyl chloride) automotive plate composition and a preparation method thereof.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a high flame retardant CPVC automotive board composition comprises the following components in parts by weight: 70-100 parts of CPVC resin, 0-50 parts of PVC resin, 1-8 parts of lubricant, 10-30 parts of modifier, 1-5 parts of processing aid, 1-10 parts of heat stabilizer, 1-5 parts of auxiliary stabilizer and 2-10 parts of additive.

Preferably, the high flame retardant CPVC automotive panel composition comprises, by weight: 80-95 parts of CPVC resin, 0-30 parts of PVC resin, 1-5 parts of lubricant, 15-30 parts of modifier, 2-4 parts of processing aid, 1.3-3 parts of heat stabilizer, 1.3-3 parts of auxiliary stabilizer and 3-6 parts of additive.

The CPVC resin is prepared by a water phase method, the polymerization degree is 700-1000, the chlorine content is more than 67%, the tensile strength is more than 50MPa, and the average particle size is 120-140 mu m.

Preferably, the CPVC resin is prepared by an aqueous phase method, the polymerization degree is 700-1000, the chlorine content is 67.2-68.4%, the tensile strength is 52MPa, the particles are uniform, and the average particle size is 131-140 mu m.

The lubricant is one or more of paraffin, polyethylene wax, oxidized polyethylene wax, Fischer-Tropsch wax, ester wax, oxidized wax, stearic acid, calcium stearate, ethylene bis stearamide wax and stearic acid amide.

The modifier is one or a combination of more of impact-resistant CPE, impact-resistant ACR, MBS, ABS, AS, PMMA and HIPS.

The processing aid is acrylic processing aid, and is one or a combination of two of 201, 401, PA-20, PA-40 and PA-101.

The heat stabilizer is one or a combination of more of methyl tin mercaptide, butyl tin mercaptide, dimethyl tin maleate, dibutyltin maleate and calcium-zinc composite stabilizer.

The auxiliary stabilizer is one or a combination of more of an antioxidant 1076, an antioxidant 1010, phosphite ester, tricosanol thiodipropionate epoxidized soybean oil, epoxidized linseed oil and beta diketone.

The additive is one or more of titanium dioxide, calcium carbonate, talcum powder, hydrotalcite, antimony trioxide, magnesium hydroxide and aluminum hydroxide.

The preparation method of the high-flame-retardant CPVC automotive plate composition comprises the following steps: the CPVC resin, the PVC resin, the lubricant, the modifier, the processing aid and the additive are put into a thermal mixing device according to the proportion and stirred, the initial temperature of the thermal mixing device is controlled to be 30-50 ℃, the stirring speed is 500rpm at 200-.

And (3) starting cold mixing and stirring, wherein the stirring speed is 50-80rpm, immediately discharging the hot material into a cold mixer, cooling by using jacket cooling water and a built-in cooling accessory at the cooling speed of 3-10 ℃/min, and discharging and packaging when the temperature is reduced to 40-60 ℃ to obtain the high-flame-retardant CPVC automotive plate composition.

A plate prepared from the high-flame-retardant CPVC automotive plate composition has an oxygen index of 46-53%, the impact strength of a simply supported beam of 35-48.5 KJ/square meter, the Vicat softening point temperature of 95.3-102.3 ℃, and the dynamic thermal stability time of 23.8-28min under the conditions of 185 ℃ and 60 rpm/min.

Compared with the prior art, the invention has the beneficial effects that:

(1) the high-flame-retardant CPVC automotive plate composition prepared by the invention has the advantages that the oxygen index can reach 46-53%, and the high-flame-retardant CPVC automotive plate composition has excellent flame retardant property;

(2) the high-flame-retardant CPVC automobile plate composition prepared by the invention has the advantages that the impact strength of a simply supported beam can reach 35-48.5KJ/m²The material has better shock resistance;

(3) the high-flame-retardant CPVC automotive plate composition prepared by the invention has high thermal stability, and the dynamic thermal stability time is 23.8-28min under the conditions of 185 ℃ and 60rpm by using a Hapu rheometer, so that the plate processing requirement is met;

(4) the high-flame-retardant CPVC automotive board composition prepared by the invention has the Vicat softening point temperature of 95.3-102.3 ℃ and good heat resistance.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described.

Example 1

A high flame retardant CPVC automotive board composition comprises the following components in parts by weight: 70 parts of CPVC resin, 30 parts of PVC resin, 0.8 part of lubricant polyethylene wax, 1.2 parts of lubricant oxidized polyethylene wax, 15 parts of impact-resistant CPE (chlorinated polyethylene) modifier, MBS10 parts of modifier, ACR 2012 parts of processing aid, 3 parts of heat stabilizer methyl tin mercaptide, 2 parts of epoxy soybean oil serving as an auxiliary stabilizer, 1 part of beta diketone serving as the auxiliary stabilizer and 6 parts of titanium dioxide serving as an additive;

the CPVC resin is prepared by a water phase method, the polymerization degree is 700, the chlorine content is 67.8%, the tensile strength is 52MPa, the particles are uniform, and the average particle size is 135 micrometers;

the preparation method of the high-flame-retardant CPVC automotive plate composition comprises the following steps: the CPVC resin, the PVC resin, the lubricant polyethylene wax, the lubricant oxidized polyethylene wax, the modifier impact-resistant CPE, the modifier MBS, the processing aid ACR201 and the additive titanium dioxide in the raw material components are proportionally put into a thermal mixing device to start stirring, the initial temperature of the thermal mixing device is controlled to be 40 ℃, the stirring speed is 250rpm, after stirring for 1.5min, the thermal stabilizer methyl tin mercaptide, the auxiliary stabilizer epoxidized soybean oil and the auxiliary stabilizer beta diketone are added, timing and heating are started, the rotating speed is increased to 500rpm, the average heating rate is 5.8 ℃/min, when the temperature is increased to 110 ℃, discharging is carried out, and the time taken is 12 min.

Starting cold mixing and stirring, wherein the stirring speed is 60rpm, immediately discharging the hot material into a cold mixer, cooling by using jacket cooling water and a built-in cooling accessory, wherein the cooling speed is 6 ℃/min, discharging and packaging when the temperature is reduced to 40 ℃, and obtaining the high-flame-retardant CPVC automotive plate composition.

The high-flame-retardant CPVC automotive board composition is subjected to tabletting through an open mill and a flat vulcanizing machine to prepare a board, the oxygen index (by adopting the method GB/T2406.2-2009), the Vicat softening point temperature (by adopting the method GB/T1633-.

Example 2

A high flame retardant CPVC automotive panel composition comprises: calculated by weight portion

100 parts of CPVC resin; 2.8 parts of Fischer-Tropsch wax serving as a lubricant, 1.2 parts of oxidized polyethylene wax serving as a lubricant, 12 parts of impact-resistant ACR serving as a modifier, 3 parts of MBS, ACR PA-204 parts of a processing aid, 1.5 parts of methyl tin mercaptide serving as a heat stabilizer, 2 parts of phosphite ester serving as an auxiliary stabilizer, 1 part of epoxidized soybean oil serving as an auxiliary stabilizer and 3 parts of titanium dioxide serving as an additive;

the CPVC resin is prepared by a water phase method, the polymerization degree is 1000, the chlorine content is 68.4%, the tensile strength is 52MPa, the particles are uniform, and the average particle size is 140 micrometers;

the preparation method of the high-flame-retardant CPVC automotive plate composition comprises the following steps: the CPVC resin, the Fischer-Tropsch wax serving as the lubricant, the oxidized polyethylene wax serving as the lubricant, the impact-resistant ACR (acrylic copolymer) serving as the modifier, the MBS (methyl methacrylate-butadiene-styrene copolymer), the ACR PA-20 serving as the processing aid and the titanium dioxide serving as the additive in the raw material components are proportionally put into a hot mixing device, the initial temperature is 45 ℃, stirring is started, the stirring speed is 300rpm, after stirring for 1min, the methyl tin mercaptide serving as a heat stabilizer, the phosphite serving as an auxiliary stabilizer and the epoxidized soybean oil serving as the auxiliary stabilizer are added, timing and temperature rise are started, the rotating speed is increased to 650rpm, the average temperature rise rate is 7.1 ℃/min, when the temperature rises to 120 ℃, discharging is carried out, and the time for use is 10.5 min.

Starting cold mixing and stirring, wherein the stirring speed is 60rpm, immediately discharging the hot material into a cold mixer, cooling by using jacket cooling water and a built-in cooling accessory, wherein the cooling speed is 6.5 ℃/min, discharging and packaging when the temperature is reduced to 40 ℃, and obtaining the high-flame-retardant CPVC automotive plate composition.

The high-flame-retardant CPVC automotive board composition is subjected to tabletting through an open mill and a flat vulcanizing machine to prepare a board, the oxygen index (by adopting the method GB/T2406.2-2009), the Vicat softening point temperature (by adopting the method GB/T1633-.

Example 3

A high flame retardant CPVC automotive panel composition comprises: calculated by weight portion

90 parts of CPVC resin, 10 parts of PVC resin, 2.2 parts of Fischer-Tropsch wax and 0.8 part of oxidized polyethylene wax; 14 parts of impact-resistant modifier ACR, 6 parts of MBS, 2 parts of heat stabilizer methyl tin mercaptide, 2 parts of auxiliary stabilizer phosphite ester and 5 parts of talcum powder;

the CPVC resin is prepared by a water phase method, the polymerization degree is 700, the chlorine content is 67.2%, the tensile strength is 52MPa, the particles are uniform, and the average particle size is 131 mu m;

the preparation method of the high-flame-retardant CPVC automotive plate composition comprises the following steps: the CPVC resin, the PVC resin, the Fischer-Tropsch wax, the oxidized polyethylene wax, the impact-resistant ACR and the MBS as modifiers, the ACR PA-101 as a processing aid and the talcum powder as additives in the raw material components are proportionally put into a hot mixing device, the initial temperature is 45 ℃, stirring is started, the stirring speed is 300rpm, after stirring for 2min, the methyl tin mercaptide as a heat stabilizer and the phosphite as an auxiliary stabilizer are put in, timing is started, the rotating speed is increased to 750rpm, the average heating rate is 9.4 ℃/min, and when the temperature is increased to 120 ℃, discharging is carried out, wherein the used time is 8 min.

Starting cold mixing and stirring, wherein the stirring speed is 60rpm, immediately discharging the hot material into a cold mixer, cooling by using jacket cooling water and a built-in cooling accessory, wherein the cooling speed is 7 ℃/min, discharging and packaging when the temperature is reduced to 45 ℃, and obtaining the high-flame-retardant CPVC automotive plate composition.

The high-flame-retardant CPVC automotive board composition is subjected to tabletting through an open mill and a flat vulcanizing machine to prepare a board, the oxygen index (by adopting the method GB/T2406.2-2009), the Vicat softening point temperature (by adopting the method GB/T1633-.

Comparative example 1

A composition comprising, in parts by weight:

90 parts of CPVC resin; 10 parts of PVC resin; 1.2 parts of Fischer-Tropsch wax and 1.2 parts of OPE wax; 4 parts of impact-resistant ACR (acrylic rubber) modifier and 4 parts of MBS (methyl methacrylate-butadiene-styrene copolymer); processing aid ACR 4013; 1.5 parts of methyl tin mercaptide; 1 part of phosphite ester and 1 part of epoxidized soybean oil; 5 parts of titanium dioxide;

the CPVC resin, the PVC resin, the Fischer-Tropsch wax, the OPE wax, the impact resistant ACR and the MBS as modifiers, the ACR 401 as processing aids, the methyl tin mercaptide, the phosphite ester, the epoxidized soybean oil and the titanium dioxide in the raw material components are put into a hot mixing device according to the proportion, the stirring is started, the stirring speed is 550rpm, when the temperature is increased to 120 ℃, the materials are discharged, and the time is 7 min.

Starting cold mixing and stirring, wherein the stirring speed is 60rpm, immediately discharging the mixture into a cold mixer, cooling by cooling water through a jacket, and discharging and packaging when the temperature is reduced to 45 ℃ to obtain mixed powder for later use.

The high-flame-retardant CPVC automotive board composition is subjected to tabletting through an open mill and a flat vulcanizing machine to prepare a board, the oxygen index (by adopting the method GB/T2406.2-2009), the Vicat softening point temperature (by adopting the method GB/T1633-.

Comparative example 2

A composition comprising, in parts by weight:

100 parts of CPVC resin; 2.0 parts of Fischer-Tropsch wax and 1.2 parts of OPE wax; 16 parts of impact-resistant ACR (acrylic rubber) modifier and 4 parts of MBS (methyl methacrylate-butadiene-styrene copolymer); processing aid ACR 2013; 1.5 parts of methyl tin mercaptide; 1 part of phosphite ester and 1 part of epoxidized soybean oil; 5 parts of additive titanium dioxide;

the CPVC resin is prepared by a water phase method, and the chlorine content is 60.8%;

the CPVC resin, the Fischer-Tropsch wax, the OPE wax, the impact-resistant ACR, the MBS, the processing aid ACR201, the methyltin mercaptide, the phosphite ester, the epoxidized soybean oil and the titanium dioxide serving as the additive in the raw material components are put into a hot mixing device according to the proportion, stirring is started, the stirring speed is 400rpm, when the temperature is increased to 120 ℃, discharging is carried out, and the used time is 15 min.

And (3) starting cold mixing and stirring, wherein the stirring speed is 60rpm, immediately discharging the mixture into a cold mixer, cooling by cooling water through a jacket, and discharging and packaging when the temperature is reduced to 62 ℃ to obtain mixed powder for later use.

The high-flame-retardant CPVC automotive board composition is subjected to tabletting through an open mill and a flat vulcanizing machine to prepare a board, the oxygen index (by adopting the method GB/T2406.2-2009), the Vicat softening point temperature (by adopting the method GB/T1633-.

All percentages used in the present invention are mass percentages unless otherwise indicated.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.