CN114015251A - Sizing material formula of DTP method masterbatch A - Google Patents

Abstract

The invention provides a sizing material formula of a DTP method masterbatch A, which comprises the following components: asphalt: 55-80 parts; oil product: 10-30 parts; SBS: 5-15 parts of a solvent; SBR: 2-6 parts; pre-sol: 2-7 parts; the SBS has a linear chain structure, the block ratio S/B is 3/7, the molecular weight is 100000-200000 Dalton, and the melt index is 0.5-1.5g/10 min. The production of the asphalt coiled material is carried out by the DTP method, the process comprises the step of batching the masterbatch A and the masterbatch B in a pot, and the preparation of the masterbatch A, the masterbatch B and the mixed rubber material can be synchronously carried out, so that the batching time and the production time are obviously reduced, the production efficiency is improved, and the cost is reduced. The invention comprehensively considers the influence of the chain structure, the block ratio (S/B), the molecular weight and the melt index of SBS on the performance of the final asphalt sizing material, the selected SBS specification can obviously reduce the sizing material viscosity of the masterbatch A, the residue of the modifier particles is greatly reduced, the modification effect is greatly improved, the modification time is shortened, and the production efficiency is improved. Meanwhile, the sizing quality of the masterbatch A is not affected.

Description

Sizing material formula of DTP method masterbatch A

Technical Field

The invention belongs to the technical field of waterproof coiled materials, and particularly relates to a sizing material formula of a DTP (draw texturing polyester) process masterbatch A.

Background

The asphalt waterproof roll is a commonly used waterproof roll, and is usually made by dipping asphalt in matrix materials such as base paper, fiber felt and the like, and spreading powdery, granular or sheet materials on the surface to prepare a curlable sheet waterproof material. At present, the enterprises adopt a DTP method to produce asphalt coiled materials, the process mixes the masterbatch A and the masterbatch B in different pots, potential safety hazards are reduced while materials are intensively fed, production arrangement is more flexible, and production efficiency is improved. However, in actual production operation, some problems are exposed in the rubber material modification process, a large proportion of asphalt modifier can be added into the masterbatch A, and the rubber material has high viscosity and is not beneficial to stirring; and the modifier dissolution degree cannot reach the best, a large amount of undissolved particles exist, the expected effect is difficult to achieve, and raw materials are wasted. And the particles are difficult to dissolve in the subsequent masterbatch A, B mixture, which seriously affects the appearance and quality of the product.

CN201811381664.1 discloses modified asphalt for waterproof coiled materials, which comprises the following components in parts by weight: 35-40 parts of masterbatch A, 25-30 parts of masterbatch B, 1-2 parts of C9 petroleum resin and 30-35 parts of talcum powder. The masterbatch A is prepared by the following steps, wherein the raw materials are calculated according to parts by weight: (A) adding 40 parts of No. 90 asphalt and 45 parts of No. 200 asphalt into a reaction kettle; (B) heating to 150 ℃, and adding 10 parts of SBS3411 and 2 parts of SBR; (C) and grinding twice after stirring for 1h, wherein the ground rubber material is the masterbatch A. The SBS3411 adopted in the technical scheme is a star-shaped structure, the block ratio S/B is 3/7, and the molecular weight is 2450000 Dal. Due to the structure and molecular weight of the SBS, the SBS has long melting time in the asphalt, and undissolved particles exist, so that the production efficiency and the product quality are influenced.

CN201410191720.0 discloses SBS/SBR composite modified emulsified asphalt, which consists of matrix asphalt, linear SBS, SBR latex, compatilizer, stabilizer, viscosity reducer, emulsifier, hydrochloric acid and water, wherein the linear SBS accounts for 3.5-5.5 wt% of the matrix asphalt, the compatilizer accounts for 1-4 wt% of the matrix asphalt, the stabilizer accounts for 0.1-0.4 wt% of the matrix asphalt, the viscosity reducer accounts for 2.0-10.0 wt% of the matrix asphalt, the emulsifier accounts for 0.5-1.5 wt% of the matrix asphalt, and the SBR latex accounts for 1-5 wt% of the matrix asphalt. The block ratio and the molecular weight of the linear SBS are both smaller than those of the star SBS, so that the linear SBS has higher swelling speed in asphalt and oil products and the modification time is reduced. However, linear SBS may not have the same modification effect as SBS having a star structure, and thus, improvement in properties of products and production efficiency are considered in combination.

In conclusion, the research on the rubber compound formula which has a certain improvement effect on the performance of the asphalt rubber compound, shortens the modification time and improves the production efficiency has wide application prospect.

Disclosure of Invention

The invention aims to provide a sizing material formula of a DTP method masterbatch A, which has a certain effect of improving the performance of an asphalt sizing material, shortens the modification time and improves the production efficiency.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

a sizing material formula of a DTP method masterbatch A comprises the following components in parts by weight:

asphalt: 55 to 80 portions of

Oil product: 10 to 30 portions of

SBS: 5-15 parts of

SBR: 2 to 6 portions of

Pre-sol: 2-7 parts;

the SBS has a linear chain structure, the block ratio S/B is 3/7, the molecular weight is 100000-200000 Dalton, and the melt index is 0.5-1.5g/10 min.

The inventor of the invention finds that the DTP method masterbatch A can be added with a large proportion of asphalt modifier, so that the rubber material has high viscosity and is not beneficial to stirring in daily production practice; meanwhile, the solubility of the modifier is poor, which affects the product quality. Specifically, through theoretical research and a large number of experimental selections, the inventor discovers the influence of the property of the modifier SBS in the asphalt rubber material on the viscosity and the solubility of the rubber material, comprehensively considers the influence of the chain structure, the block ratio (S/B), the molecular weight and the melt index of the SBS on the performance of the final asphalt rubber material, specifically selects the SBS as a linear chain structure, has the block ratio S/B of 3/7, the molecular weight of 100000-200000 Dalton and the melt index of 0.5-1.5g/10min, improves the performance of the asphalt product to a certain extent, shortens the modification time and improves the production efficiency.

In the invention, preferably, Liangrong 3501 is selected as the SBS modifier of the DTP-method masterbatch A, and the specification parameters of the Liangrong 3501 meet the requirements of the invention on SBS.

In the invention, preferably, the oil product is one or two of 60# oil product produced by Shenzhen treasure Shenshizhen Co., Ltd or 35# oil product produced by Anhui Oriental Jiaxin building materials science and technology Co., Ltd, so that the low-temperature performance is improved, and the melting degree of other modifiers is improved. The SBR is one or two of 95 percent SBR and 92 percent SBR produced by Shandong Gao's Kogyo Co., Ltd, so that the cohesion and the bonding force of the coating are increased, and the wire drawing effect of the product is improved. The pre-sol is made of 0506 produced by Xuzhou Hongshun high-new materials Co., Ltd, and the cohesion and the bonding force of the coating are increased. Further, the asphalt is common road asphalt with the mark number of 90#, one of medium petrochemicals, medium petroleum and SK as a main body material.

In the invention, preferably, the sizing formula of the DTP process masterbatch A consists of the following components in parts by weight:

asphalt: 68 portions of

Oil product: 15 portions of

SBS: 10 portions of

SBR: 3 portions of

Pre-sol: 4 parts.

The rubber material formula of the masterbatch A is a better formula obtained by the inventor through a large number of experimental optimization selections, wherein the SBS, SBR and pre-sol are arranged in proportion, so that the whole components are uniformly mixed, no obvious undissolved particles exist, the modification effect is good, and the production efficiency is high.

The invention also provides a preparation method of the DTP method masterbatch A, which comprises the following steps:

s1, adding an oil product into a container;

s2, adding part of asphalt;

s3, adding a pre-sol;

s4, adding SBS and SBR, and then adding the rest asphalt;

s5, grinding: after being stirred uniformly, the mixture is ground by a colloid mill for one time, and the grinding time is more than 30 minutes;

s6, sample inspection: sampling and checking to confirm whether the particles are completely dissolved; if the solvent is not dissolved, heating to 170 +/-5 ℃ and continuing stirring;

the amount of bitumen added in S2 is one half to three quarters of the total weight of bitumen in the formulation.

Preferably, the preparation method of the DTP method masterbatch A,

s1, adding an oil product: adding 60# oil product produced by Shenzhen, treasure, Shenshizhen, and adding 35# oil product produced by Anhui, Oriental Jiaxin building materials, science and technology Limited, stirring and heating to above 120 ℃;

s2, pumping partial asphalt: pumping 90# asphalt, stirring and heating to (150 +/-10 ℃);

s3, adding the pre-sol 0506, and stirring and dispersing for 10-30 min;

s4, adding SBS and SBR, pumping the residual asphalt after adding SBS and SBR, stirring and dissolving for 60-100min, and controlling the temperature to 150-160 ℃.

Further preferably, in the preparation of the masterbatch A, the mass ratio of the 60# oil product to the 35# oil product is 1-4: 1.

The invention also provides a mixed rubber material which comprises the masterbatch A and the masterbatch B, wherein the masterbatch B comprises the following components in parts by weight:

asphalt: 55 to 80 portions of

Oil product: 10-30 parts of

Rubber powder: 15-30 parts.

Preferably, the masterbatch B comprises the following components in parts by weight:

asphalt: 68 portions of

Oil product: 15 portions of

Rubber powder: 20 parts of (1);

the oil product is selected from one or two of 60# oil product produced by Shenzhen treasure Shenshizhen Shu Limited or 35# oil product produced by Anhui Oriental Jiaxin building materials science and technology Limited; the rubber powder is rubber powder particles which can completely pass through a No. 10 sieve.

In the invention, the masterbatch B is prepared by the following steps:

(1) adding an oil product into a reaction kettle, heating to 120-150 ℃, and then adding asphalt and rubber powder;

(2) and stirring for 1-3 h, and grinding once to obtain the masterbatch B.

In the present invention, preferably, the mixed size comprises the following components in parts by weight:

the masterbatch A: 25-45 parts;

and (3) mother rubber B: 15-55 parts;

auxiliary agent: 1-5 parts;

stone powder: 30-42 parts.

Further preferably, the mixed rubber compound comprises the following components in parts by weight:

the masterbatch A: 30 parts of (1);

and (3) mother rubber B: 30 parts of (1);

auxiliary agent: 3 parts of a mixture;

stone powder: 37 parts of the raw materials.

The auxiliaries added to the mixed size are those conventionally used in the art, and the present invention is not limited thereto. The skilled person can select the desired one according to the actual need.

The preparation of the mixed rubber material comprises the following steps:

s1: according to the preparation method, the masterbatch A and the masterbatch B are simultaneously prepared in different reaction kettles;

s2: respectively pumping the masterbatch A and the masterbatch B into a mixing tank, and uniformly stirring;

s3: adding stone powder and an auxiliary agent into the mixing tank, uniformly stirring, and cooling to obtain the product.

The production of the asphalt coiled material is carried out by the DTP method, the process comprises the steps of batching the masterbatch A and the masterbatch B in a pot, and synchronously preparing the masterbatch A, the masterbatch B and the mixed rubber material, so that the batching time is obviously shortened relatively, the production efficiency is improved, and the cost is reduced.

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

1. the production of the asphalt coiled material is carried out by the DTP method, the process comprises the step of batching the masterbatch A and the masterbatch B in a pot, the preparation of the masterbatch A, the masterbatch B and the mixed rubber material can be synchronously carried out, the batching time and the production time are obviously reduced relatively, the production efficiency is improved, and the cost is reduced.

2. The inventor comprehensively considers the influence of the chain structure, the block ratio (S/B), the molecular weight and the melt index of SBS on the performance of the final asphalt rubber material, the selected SBS specification can obviously reduce the rubber material viscosity of the masterbatch A, the residue of the modifier particles is greatly reduced, the modification effect is greatly improved, the modification time is shortened, and the production efficiency is improved. Meanwhile, the sizing quality of the masterbatch A is not affected.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the embodiments.

In the following embodiments, the raw materials are commercially available unless otherwise specified.

Wherein, the asphalt is common road asphalt with the mark number of 90 #; the 35# oil product is produced by the England Jiaxin building materials science and technology Limited company of Anhui, and the 60# oil product is produced by the Shenzhen treasure Shenshili Limited company of Shenzhen; the SBR is 95% SBR produced by Shandong Gao's Kogyo Co., Ltd, and the pre-sol is 0506 produced by Xuzhou Hongshun high-new materials Co., Ltd. The rubber powder selects 80 meshes of forward-developing produced by new materials of forward-developing Luzhou and 80 meshes of broad sense produced by rubber products of Meiqida of Jiangyun city, and improves the cohesive force and fatigue resistance of the rubber material.

The experimental scheme is as follows:

the formula and the production process of the masterbatch B are ensured to be unchanged, and the production process of the masterbatch A and the formula and the production process of the mixture are ensured to be unchanged. In the formula of the master batch A, the types and the proportions of asphalt, oil and other modifiers are kept constant, and SBS of different models produced by different manufacturers is selected for pilot plant test. The pilot products were based on PET 23441I 1.5 and BAC 354684.0.

Wherein PET 23441I 1.5 is self-adhesive polymer modified asphalt waterproof coiled material GB23441-20091.5mmN class PET membrane type I (-20 ℃); BAC 354684.0 is 4.0mmBAC root resistant self-adhesive waterproof roll. The Zhuobao BAC root-resistant self-adhesive waterproof coiled material is a self-adhesive coiled material which is preferentially detected by root-resistant puncture in the industry; the performance is excellent: corrosion resistance, mould resistance and puncture resistance; the integrity of the waterproof layer can be effectively kept, the material is a preferable material for greening special spaces such as planted roofs and the like, and the material meets the national execution standard: GB/T35468-.

6 SBS types in the following table are selected for comparison, and the optimal SBS type is selected;

TABLE 1 specification parameters of SBS of different models

SBS type	Type (B)	Block ratio (S/B)	Molecular weight (Dal)	Melt index (g/10min)
					Li Chang Rong 3411	Star type	3/7	245000	＜1
LG411	Star type	3/7	300000	＜1
					Yue 803E	Star type	4/6	150000	＜1
LG501	Wire type	3/7	150000	＜1
					Yue transform 1301-1	Wire type	3/7	100000	0.01-0.5
Liangrong 3501	Wire type	3/7	100000	＜1

The three star-shaped SBS and the three linear SBS are used in the SBS in the pilot test, the block ratio and the molecular weight of the star-shaped SBS are both larger than those of the linear SBS, so that the swelling speed of the star-shaped SBS in asphalt and oil products is lower than that of the linear SBS, and the modification time is long.

The rubber formula of the pilot product is as follows:

the mixture formula comprises:

mother rubber A: 30 Kg;

and (3) mother rubber B: 30 Kg;

auxiliary agent: 3 Kg;

stone powder: 37 Kg.

The formula of the master batch A comprises the following components:

asphalt: 68Kg

Oil product: 15Kg

SBS：10Kg

SBR：3Kg

0506：4Kg

The formula of the master batch B is as follows:

asphalt: 68Kg

Oil product: 15Kg

Rubber powder: 20Kg

The preparation process of the sizing material comprises the following steps:

preparing a master batch A: (different SBS's were carried out by this process)

1. Adding an oil product: adding No. 60 oil and No. 35 oil, stirring and heating to over 120 ℃, wherein the weight ratio of the two oils is 1: 1;

2. pumping asphalt: pumping two thirds of 90# asphalt according to the formula amount, stirring and heating to (150 +/-5 ℃);

3. adding 0506, stirring and dispersing for 10 min;

4. adding SBS, pumping the residual asphalt after adding SBS, stirring and dissolving for 60min, and controlling the temperature to be 150-160 ℃;

5. grinding: after the dispersion is finished, grinding for more than 30 minutes by a colloid mill;

6. and (3) sample inspection: sampling to check whether particles exist or not, and determining whether the particles are completely dissolved; if the solvent is not dissolved, the temperature is raised to 170 +/-5 ℃ and stirring is continued.

Preparing a master batch B:

(1) adding an oil product (60# oil and 35# oil in a ratio of 1: 1) into a reaction kettle, heating to 120-150 ℃, and then adding asphalt and rubber powder;

(2) and stirring for 1-3 h, and grinding once to obtain the masterbatch B.

Preparing a mixed sizing material:

a: according to the preparation method, the masterbatch A and the masterbatch B are simultaneously prepared in different reaction kettles;

b: pumping the masterbatch A and the masterbatch B into a mixing tank according to the formula amount respectively, and uniformly stirring;

c: adding stone powder and an auxiliary agent into the mixing tank, uniformly stirring, and cooling to obtain a mixed rubber material.

The detection data are as follows:

table 2: the melting time of SBS at 180 deg.c in mother glue A

Table 3: performance testing

Data analysis

1. Melting time:

1) the average melting time of star SBS is 240min, the average melting time of linear SBS is 87min, and the difference is 153 min;

2) the dissolving time of star SBS is 210min for Li Changrong 3411 and LG411, the dissolving time is 300min for Yuetization 803E, the difference is 90 min;

3) the linear SBS melting time is 60min at the shortest time of Yuexing 1301-1, 100min at the longest time of LG501 and Li Changlong 3501, and the difference is 40 min.

2. Penetration degree: the penetration degree of the Liangrong 3411 is 65 at the maximum, and the 501 at the minimum is 32.

3. Heat resistance: the type I heat-resistant LG411 has the best heat resistance limit of 85 ℃ and the root heat resistance limit of 85 ℃. The low-temperature flexibility limit of Liangrong 3411 and LG411 has the best low-temperature performance of type I-25 ℃ root resistance-30 ℃ and the worst type I-22 ℃ root resistance-27 ℃ of Yuetization 803E.

4. The peeling strength between the coiled material and the coiled material is not processed, the peeling strength line type between the coil material without processing and the aluminum plate is better than that of a star type, the peeling strength of Liangrong 3411 is the minimum in 6 SBS types, and the standard of root penetration resistant products has no requirement on the peeling strength of the aluminum plate.

5. The viscosity of Liangrong 3501 is the smallest, and the viscosity of Liangrong 3411 is the largest. The linear average viscosity was 7750mPa and the star average viscosity was 16450mPa, a difference of 8700 mPa. The use of linear SBS contributes to increased production efficiency.

After the tests and comprehensive consideration, the invention selects the Liangrong 3501 as the SBS modifier of the DTP-method masterbatch A, and the SBS modifier has certain improvement on the performance of the product, meanwhile, the modification time is shortened, and the production efficiency is improved.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. A sizing material formula of a DTP method masterbatch A is characterized by comprising the following components in parts by weight:

asphalt: 55 to 80 portions of

Oil product: 10 to 30 portions of

SBS: 5 to 15 parts of

SBR: 2 to 6 portions of

Pre-sol: 2-7 parts;

the SBS has a linear chain structure, the block ratio S/B is 3/7, the molecular weight is 100000-200000 Dalton, and the melt index is 0.5-1.5g/10 min.

2. The compound formulation of the DTP process masterbatch a of claim 1, wherein the SBS is luo chang 3501.

3. The sizing formulation of the DTP process masterbatch A according to claim 1, wherein the masterbatch A comprises the following components in parts by weight:

asphalt: 68 portions of

Oil product: 15 portions of

SBS: 10 portions of

SBR: 3 portions of

Pre-sol: 4 parts of a mixture;

the oil product is selected from one or two of 60# oil product produced by Shenzhen treasure Shenshizhen Shu Limited or 35# oil product produced by Anhui Oriental Jiaxin building materials science and technology Limited; the SBR is one or two of 95 percent SBR and 92 percent SBR produced by Shandong Gao's Korea company; the pre-sol is 0506 produced by Xuzhou Hongshun high-new materials Co.

4. A process for the preparation of DTP process masterbatch a according to any one of claims 1 to 3, comprising the steps of:

s1, adding an oil product into a container;

s2, adding part of asphalt;

s3, adding a pre-sol;

s4, adding SBS and SBR, and then adding the rest asphalt;

s5, grinding: after being stirred uniformly, the mixture is ground by a colloid mill for one time, and the grinding time is more than 30 minutes;

s6, sample inspection: sampling and checking to confirm whether the particles are completely dissolved; if the solvent is not dissolved, heating to 170 +/-5 ℃ and continuing stirring;

the amount of bitumen added in S2 is one half to three quarters of the total weight of bitumen in the formulation.

5. The method for preparing DTP process masterbatch A according to claim 4,

s1, adding an oil product: adding 60# oil product produced by Shenzhen, treasure, Shenshizhen, and adding 35# oil product produced by Anhui, Oriental Jiaxin building materials, science and technology Limited, stirring and heating to above 120 ℃;

s2, pumping partial asphalt: pumping 90# asphalt, stirring and heating to (150 +/-10 ℃);

s3, adding the pre-sol 0506, and stirring and dispersing for 10-30 min;

s4, adding SBS and SBR, pumping the residual asphalt after adding SBS and SBR, stirring and dissolving for 60-100min, and controlling the temperature to 150-160 ℃.

6. The method for preparing the masterbatch A by the DTP method according to claim 5, wherein the mass ratio of the 60# oil product to the 35# oil product is 1-4: 1.

7. The mixed rubber compound is characterized by comprising the masterbatch A and the masterbatch B in claim 1, wherein the masterbatch B comprises the following components in parts by weight:

asphalt: 55 to 80 portions of

Oil product: 10-30 parts of

Rubber powder: 15-30 parts.

8. The mixed size according to claim 7, characterized in that it comprises the following components in parts by weight:

the masterbatch of claim 1 a: 25-45 parts;

and (3) mother rubber B: 15-55 parts;

auxiliary agent: 1-5 parts;

stone powder: 30-42 parts.

9. The mixed size according to claim 8, characterized in that it comprises the following components in parts by weight:

the masterbatch of claim 1 a: 30 parts of (1);

and (3) mother rubber B: 30 parts of (1);

auxiliary agent: 3 parts of a mixture;

stone powder: 37 parts of the raw materials.

10. The mixed size according to claim 7, wherein the masterbatch B comprises the following components in parts by weight:

asphalt: 68 parts of (b); oil product: 15 parts of (1); rubber powder: 20 parts of (1);

the oil product is selected from one or two of 60# oil product produced by Shenzhen treasure Shenshizhen Shu Limited or 35# oil product produced by Anhui Oriental Jiaxin building materials science and technology Limited; the rubber powder is rubber powder particles which can completely pass through a No. 10 sieve.